TRAINING_NOTES_ARRIEL_2B-2B1-2D_L1_2012-02

Full text

(1)Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page).

(2) Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page).

(3) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. This document is intended to assist a TURBOMECA-qualified instructor in teaching basic information related to the operation and maintenance of the ARRIEL 2B-2B12D turboshaft engines. It is a training aid and should only be used to support the training course to which it refers, and only by a person attending such training. It must not be used in any other circumstances. It will not be updated and should not be relied upon for the maintenance or repair of ARRIEL 2B-2B1-2D engines. Only the current approved TURBOMECA maintenance technical publications should be used for such purposes. The acquisition of this document does not constitute proof of official formal training. Only completion of a course delivered by a TURBOMECA-qualified instructor can lead to the issuance of a TURBOMECA-recognised training certificate stating, when applicable, a successful result. Turbomeca Training - February 2012 This document is the property of TURBOMECA and it may not be copied without the express written authority of TURBOMECA. Turbomeca Training is a registered Trademark. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 0.1. FOREWORD. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). FOREWORD.

(4) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. 0 - Foreword 1 - Introduction 2 - Power plant 3 - Engine 4 - Oil system 5 - Air system 6 - Fuel system. 8 - Measurement and indicating systems 9 - Starting system 10 - Electrical system 11 - Engine installation 12 - Troubleshooting 13 - Checking of knowledge. 7 - Control system. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 0.2. SUMMARY. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). SUMMARY.

(5) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. 0 - FOREWORD. • Technical publications Advisory notices ............................ 2.24 • Lubricants / Fuels / Materials Preservation and storage............... 2.26 • Safety Management - Human Factors........................................... 2.28 - 2.29. - Summary........................................... 0.2 - Table of contents............................... 0.3 - Index of pages per variants............... 0.7 - List of abbreviations.......................... 0.17 - Conversion table............................... 0.20. 1 - INTRODUCTION. 3 - ENGINE. - General information.......................... 1.2 - Training programme ......................... 1.4 - 1.5. 2 - POWER PLANT. - Power plant....................................... 2.2 - Principle of adaptation to the helicopter.......................................... 2.8 - Main characteristics.......................... 2.10 - Design and development ................. 2.14 - Maintenance .................................... 2.16 • Maintenance concept .................... 2.16 • Life limitations................................. 2.18 • Preventive and corrective maintenance................................... 2.20 • Technical publications Presentation .................................. 2.22. For training purposes only © Copyright - Turbomeca Training. - Engine presentation.......................... 3.2 - Axial compressor.............................. 3.6 - Centrifugal compressor .................... 3.8 - Combustion chamber........................ 3.10 - Gas generator turbine....................... 3.12 - Power turbine.................................... 3.14 - Exhaust system................................. 3.16 - Reduction gearbox............................ 3.18 - Transmission shaft and accessory gearbox ............................................ 3.20 - Engine - Operation ........................... 3.26 - Engine - 1st line maintenance .......... 3.28 - 3.33. Edition: February 2012. 0.3. TABLE OF CONTENTS. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). TABLE OF CONTENTS.

(6) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. TABLE OF CONTENTS 4 - OIL SYSTEM. - Oil system presentation.................... 4.2 - Oil tank - Oil cooler - Oil pressure transmitter......................................... 4.8 - Oil pumps.......................................... 4.10 - Oil filter and heat exchanger............. 4.12 - 2B-2B1: Oil filter pre-blockage indicator............................................ 4.18 - 2D: Oil pressure and temperature transmitters....................................... 4.20 - 2B-2B1: Low oil pressure switch....... 4.22 - Mechanical magnetic plugs............... 4.24 - Scavenge strainers........................... 4.26 - Oil valve assembly............................ 4.28 - Electrical magnetic plug.................... 4.30 - Centrifugal breather.......................... 4.32 - External oil pipes............................... 4.34 - Oil system - Operation ..................... 4.36 - Oil system - 1st line maintenance .... 4.38 - 4.43. 5 - AIR SYSTEM. - Air system presentation.................... 5.2 - Internal air system............................. 5.4 - Air tappings....................................... 5.6. For training purposes only © Copyright - Turbomeca Training. - Compressor bleed valve................... 5.8 - P3 pressure transmitter..................... 5.12 - External air pipes.............................. 5.14 - Air system - 1st line maintenance .... 5.16 - 5.19. 6 - FUEL SYSTEM. - Fuel system presentation ................. 6.2 - Pump and metering unit assembly.... 6.8 • Fuel pumps..................................... 6.12 • Fuel filter......................................... 6.16 • Fuel filter indication........................ 6.20 • 2D: Fuel pressure and temperature transmitters..................................... 6.24 • 2B-2B1: Low fuel pressure switch.. 6.26 • Start purge valve............................ 6.28 • Metering unit................................... 6.32 - Fuel valves assembly........................ 6.46 - Start injectors.................................... 6.54 - Main injection system........................ 6.56 - Combustion chamber drain valve..... 6.58 - Fuel system - Operation ................... 6.60 - External fuel pipes............................ 6.80 - Fuel system - 1st line maintenance . 6.82 - 6.87. Edition: February 2012. 0.4. TABLE OF CONTENTS. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). (CONTINUED).

(7) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. (CONTINUED). 7 - CONTROL SYSTEM. - Control system presentation............. 7.2 - Engine Electronic Control Unit.......... 7.10 - Control system - Operation .............. 7.14 - Control system - Indication and monitoring......................................... 7.30 - Control system - General operation .......................................... 7.40 - Control system - 1st line maintenance .................................... 7.42 - 7.51. 8 - MEASUREMENT AND INDICATING SYSTEMS - Measurement and indicating systems presentation........................ 8.2 - Speed measurement and indicating system....................... 8.4. For training purposes only © Copyright - Turbomeca Training. - T4.5 measurement and indicating system............................................... 8.14 - Torque measurement and indicating system............................................... 8.18 - 2D: EDR - Engine Data Recorder..... 8.22 - Miscellaneous indications................. 8.24 - Measurement and indicating systems - 1st line maintenance ........ 8.32 - 8.35. 9 - STARTING SYSTEM. - Starting system presentation ........... 9.2 - Starter-generator............................... 9.4 - Ignition system.................................. 9.6 - Starting system - Operation ............. 9.8 - Starting system - 1st line maintenance .................................... 9.10 - 9.13. Edition: February 2012. 0.5. TABLE OF CONTENTS. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). TABLE OF CONTENTS.

(8) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. TABLE OF CONTENTS 10 - ELECTRICAL SYSTEM. - Electrical system presentation.......... 10.2 - Alternator.......................................... 10.4 - Electrical harnesses.......................... 10.8 - Electrical system - 1st line maintenance .................................... 10.10 - 10.13. 11 - ENGINE INSTALLATION. - Engine compartment ........................ 11.2 - Engine mounting and lifting............... 11.4 - Air intake and exhaust system.......... 11.6 - Engine/airframe system interfaces.... 11.8 - Drains - Purges - Air vents................ 11.16 - Fire protection................................... 11.18 - Engine installation - 1st line maintenance .................................... 11.20 - 11.25. 12 - TROUBLESHOOTING. - General ............................................ 12.2 - Troubleshooting ............................... 12.4 - Conclusion ....................................... 12.8 - 12.9. 13 - CHECKING OF KNOWLEDGE. - Introduction....................................... 13.2 - Questionnaire 1 ................................ 13.3 - Questionnaire 2 ................................ 13.6 - Questionnaire 3 ................................ 13.12 - Questionnaire 4................................. 13.15 - 13.30. OBSERVATIONS........................... LAST PAGE These Training Notes are established to meet the training requirements, to a certain extent, take into consideration ATA 104 recommendations and the requirements of the various authorities concerned. This document has 414 pages. It was produced using a desktop publishing system.. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 0.6. TABLE OF CONTENTS. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). (CONTINUED).

(9) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. 2B-2B1. X . X. X. X. X. X. 2D X X X X X X X. X X. X X. X X. X X. X X. X X. X X. X X. X X. X X. X X. CHAPTER 2. Power plant - General .......................................................................................................... 2.2 - 2.3 Main characteristics - Engine ratings.......................................................................................... 2.10 Main characteristics - Engine ratings...........................................................................................2.11 Main characteristics - Engine operating envelope...................................................................... 2.13 Design and development ................................................................................................. 2.14 - 2.15 Maintenance - Life limitations............................................................................................ 2.18 - 2.19 Maintenance - Technical publications - Presentation.................................................................. 2.23. CHAPTER 3. Engine presentation - General ............................................................................................. 3.2 - 3.3 Axial compressor - Presentation........................................................................................... 3.6 - 3.7 Centrifugal compressor - Presentation.................................................................................. 3.8 - 3.9 Gas generator turbine - Presentation................................................................................ 3.12 - 3.13 Power turbine - Presentation............................................................................................. 3.14 - 3.15 Exhaust system ................................................................................................................ 3.16 - 3.17 Reduction gearbox - General............................................................................................ 3.18 - 3.19 Transmission shaft and accessory gearbox - General...................................................... 3.20 - 3.21 Transmission shaft and accessory gearbox - Operation................................................... 3.24 - 3.25 Engine - Operation ........................................................................................................... 3.26 - 3.27 Engine - 1st line maintenance - Preventive maintenance (2B-2B1).................................. 3.28 - 3.29 Engine - 1st line maintenance - Preventive maintenance (2D)......................................... 3.30 - 3.31. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 0.7. INDEX OF PAGES PER VARIANTS. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). INDEX OF PAGES PER VARIANTS.

(10) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. INDEX OF PAGES PER VARIANTS 2B-2B1. 2D. X X. X X. X . X X. X. X. X. X . X X X. X X. X X. X X. X . CHAPTER 4. Oil system presentation - General ........................................................................................ 4.2 - 4.3 Oil system presentation - Description (2B-2B1).................................................................... 4.4 - 4.5 Oil system presentation - Description (2D)........................................................................... 4.6 - 4.7 Oil tank - Oil cooler - Oil pressure transmitter....................................................................... 4.8 - 4.9 Oil filter and heat exchanger - General............................................................................. 4.12 - 4.13 Oil filter and heat exchanger - Description - Operation (2B-2B1)...................................... 4.14 - 4.15 Oil filter and heat exchanger - Description - Operation (2D)............................................. 4.16 - 4.17 Oil filter pre-blockage indicator (2B-2B1).......................................................................... 4.18 - 4.19 Low oil pressure switch (2B-2B1)...................................................................................... 4.20 - 4.21 Mechanical magnetic plugs......................................................................................................... 4.23 Centrifugal breather.................................................................................................................... 4.30 Oil system - Operation................................................................................................................ 4.33 External oil pipes............................................................................................................... 4.34 - 4.35 Oil system - 1st line maintenance - Preventive maintenance (2B-2B1)........................... 4.36 - 4.37 Oil system - 1st line maintenance - Preventive maintenance (2D).................................. 4.38 - 4.39 Oil system - 1st line maintenance - Corrective maintenance..................................................... 4.41. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 0.8. INDEX OF PAGES PER VARIANTS. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). (CONTINUED).

(11) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. (CONTINUED). 2B-2B1. 2D. X X X X X X. X X. X. X. X X. X. X. X. X. X. X. X. CHAPTER 5. Air system presentation ........................................................................................................ 5.2 - 5.3 Air tappings .......................................................................................................................... 5.6 - 5.7 External air pipes.............................................................................................................. 5.14 - 5.15 Air system - 1st line maintenance - Preventive maintenance..................................................... 5.17. CHAPTER 6. Fuel system presentation - General...................................................................................... 6.2 - 6.3 Fuel system presentation - Description (2B-2B1)................................................................. 6.4 - 6.5 Fuel system presentation - Description (2D)......................................................................... 6.6 - 6.7 Pump and metering unit assembly - Presentation (2B-2B1)................................................. 6.8 - 6.9 Pump and metering unit assembly - Presentation (2D).................................................... 6.10 - 6.11 Pump and metering unit assembly - Fuel pumps (2B-2B1).............................................. 6.12 - 6.13 Pump and metering unit assembly - Fuel pumps (2D)...................................................... 6.14 - 6.15 Pump and metering unit assembly - Fuel filter (2B-2B1).................................................. 6.16 - 6.17 Pump and metering unit assembly - Fuel filter (2D).......................................................... 6.18 - 6.19 Pump and metering unit assembly - Fuel filter indication (2B-2B1).................................. 6.20 - 6.21 Pump and metering unit assembly - Fuel filter indication (2D).......................................... 6.22 - 6.23 Pump and metering unit assembly - Fuel pressure and temperature transmitters (2D)... 6.24 - 6.25. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 0.9. INDEX OF PAGES PER VARIANTS. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). INDEX OF PAGES PER VARIANTS.

(12) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. INDEX OF PAGES PER VARIANTS 2B-2B1. 2D. X . X X. X . X . X . X. . X X. X X . X X . X. X. X. X. CHAPTER 6 (CONTINUED). Pump and metering unit assembly - Low fuel pressure switch (2B-2B1).......................... 6.26 - 6.27 Pump and metering unit assembly - Start purge valve (2B-2B1)...................................... 6.28 - 6.29 Pump and metering unit assembly - Start purge valve (2D)............................................. 6.30 - 6.31 Pump and metering unit assembly - Metering unit - General (2B).................................... 6.32 - 6.33 Pump and metering unit assembly - Metering unit - Automatic control system (normal operation) (2B)......................................................................................... 6.34 - 6.35 Pump and metering unit assembly - Metering unit - Manual control system (2B)............. 6.36 - 6.37 Pump and metering unit assembly - Metering unit - Forced idle mode - Mixed mode (2B)......................................................................................................................... 6.38 - 6.39 Pump and metering unit assembly - Metering unit - General (2B1-2D)............................ 6.40 - 6.41 Pump and metering unit assembly - Metering unit - Automatic control system (2B1-2D)............................................................................................................... 6.42 - 6.43 Pump and metering unit assembly - Metering unit - Automatic back-up control system (2B1-2D)............................................................................................................... 6.44 - 6.45 Fuel valves assembly - Presentation (2B-2B1)................................................................. 6.46 - 6.47 Fuel valves assembly - Operation (2B-2B1)..................................................................... 6.48 - 6.49 Fuel valves assembly - Presentation (2D)........................................................................ 6.50 - 6.51 Fuel valves assembly - Operation (2D)............................................................................. 6.52 - 6.53. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 0.10. INDEX OF PAGES PER VARIANTS. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). (CONTINUED).

(13) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. (CONTINUED). 2B-2B1. . X. X. X. X. X. X. X. X. X. 2D X X. X X X X X X. X. CHAPTER 6 (CONTINUED). Start injectors.............................................................................................................................. 6.54 Start injectors.............................................................................................................................. 6.55 Fuel system - Operation (2B-2B1) - Pre-start................................................................... 6.60 - 6.61 Fuel system - Operation (2B-2B1) - Fuel system purge.................................................... 6.62 - 6.63 Fuel system - Operation (2B-2B1) - Starting..................................................................... 6.64 - 6.65 Fuel system - Operation (2B-2B1) - Normal running - Back-up control............................ 6.66 - 6.67 Fuel system - Operation (2B-2B1) - Shut-down................................................................ 6.68 - 6.69 Fuel system - Operation (2D) - Pre-start........................................................................... 6.70 - 6.71 Fuel system - Operation (2D) - Fuel system purge........................................................... 6.72 - 6.73 Fuel system - Operation (2D) - Starting............................................................................ 6.74 - 6-75 Fuel system - Operation (2D) - Normal running - Back-up control.................................... 6.76 - 6-77 Fuel system - Operation (2D) - Shut-down....................................................................... 6.78 - 6.79 External fuel pipes....................................................................................................................... 6.81 Fuel system - 1st line maintenance - Preventive maintenance (2B-2B1)......................... 6.82 - 6.83 Fuel system - 1st line maintenance - Preventive maintenance (2D)................................. 6.84 - 6.85 Fuel system - 1st line maintenance - Corrective maintenance................................................... 6.87. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 0.11. INDEX OF PAGES PER VARIANTS. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). INDEX OF PAGES PER VARIANTS.

(14) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. INDEX OF PAGES PER VARIANTS 2B-2B1. 2D. X X. X . X X. X X. X X. X X. X X X. X X. X X. X X X. X X. X. CHAPTER 7. Control system presentation - General ................................................................................ 7.2 - 7.3 Control system presentation - Description (2B).................................................................... 7.4 - 7.5 Control system presentation - Description 1 (2B1-2D).......................................................... 7.6 - 7.7 Control system presentation - Description 2 (2B1-2D).......................................................... 7.8 - 7.9 Engine Electronic Control Unit - General.......................................................................... 7.10 - 7.11 Engine Electronic Control Unit - EECU inputs and outputs............................................... 7.12 - 7.13 Control system - Operation - Main functions..................................................................... 7.14 - 7.15 Control system - Operation - Control................................................................................ 7.16 - 7.17 Control system - Operation - Starting (2B-2B1)................................................................ 7.20 - 7.21 Control system - Operation - Starting (2D)........................................................................ 7.22 - 7.23 Control system - Operation - Speed control...................................................................... 7.24 - 7.25 Control system - Operation - Manual mode - Manual mode training (2B)......................... 7.26 - 7.27 Control system - Operation - Principle of limitations................................................................... 7.28 Control system - Indication and monitoring - General................................................................. 7.30 Control system - Indication and monitoring - General................................................................. 7.31 Control system - Indication and monitoring - Failure Tolerance - Failure indication (2B).. 7.32 - 7.33. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 0.12. INDEX OF PAGES PER VARIANTS. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). (CONTINUED).

(15) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. (CONTINUED). 2B-2B1. 2D. CHAPTER 7 (CONTINUED). CHAPTER 8. X X . X X. X X . X X. X X . X X X X X X X X X X X X. Control system - Indication and monitoring - Failure Tolerance - Failure indication (2B1-2D)........................................................................................................... 7.34 - 7.35 Control system - Indication and monitoring - Failure Tolerance Tables (example)...................... 7.37 Control system - General operation - Functions performed by the electronic control system................................................................................................................... 7.40 - 7.41 Control system - 1st line maintenance - Preventive maintenance (2B-2B1)..................... 7.42 - 7.43 Control system - 1st line maintenance - Preventive maintenance (2D)............................ 7.44 - 7.45 Control system - 1st line maintenance - Corrective maintenance - EECU maintenance (2B-2B1)...................................................................................................... 7.48 - 7.49 Control system - 1st line maintenance - Corrective maintenance - EDR maintenance (2D).............................................................................................................. 7.50 - 7.51 Speed measurement and indicating system - General (2B)................................................. 8.4 - 8.5 Speed measurement and indicating system - General (2B1-2D).......................................... 8.6 - 8.7 Speed measurement and indicating system - N1 speed sensors (2B)................................. 8.8 - 8.9 Speed measurement and indicating system - N1 speed sensor (2B1-2D)....................... 8.10 - 8.11 Speed measurement and indicating system - N2 speed sensors..................................... 8.12 - 8.13 T4.5 measurement and indicating system - Presentation................................................. 8.14 - 8.15 T4.5 measurement and indicating system - System components..................................... 8.16 - 8.17. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 0.13. INDEX OF PAGES PER VARIANTS. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). INDEX OF PAGES PER VARIANTS.

(16) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. INDEX OF PAGES PER VARIANTS 2B-2B1. 2D. CHAPTER 8 (CONTINUED). CHAPTER 9. X X. X X. X X. X X. X X. X . X X. X X X. X X. X . X X. X X. Torque measurement and indicating system - Presentation............................................. 8.18 - 8.19 Torque measurement and indicating system - System components........................................... 8.20 Torque measurement and indicating system - System components........................................... 8.21 EDR - Engine Data Recorder (2D).................................................................................... 8.22 - 8.23 Miscellaneous indications - Indicators............................................................................... 8.26 - 8.27 Miscellaneous indications - VEMD - Presentation............................................................ 8.28 - 8.29 Measurement and indicating systems - 1st line maintenance - Preventive maintenance................................................................................................................................ 8.33 Measurement and indicating systems - 1st line maintenance - Corrective maintenance........... 8.35 Starting system presentation................................................................................................. 9.2 - 9.3 Starter-generator................................................................................................................... 9.4 - 9.5 Ignition system.............................................................................................................................. 9.6 Starting system - Operation.......................................................................................................... 9.8 Starting system - Operation.......................................................................................................... 9.9 Starting system - 1st line maintenance - Preventive maintenance..............................................9.11. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 0.14. INDEX OF PAGES PER VARIANTS. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). (CONTINUED).

(17) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. (CONTINUED). 2B-2B1. 2D. X X X X X X X . CHAPTER 10. Alternator - General........................................................................................................... 10.4 - 10.5 Alternator - Description - Operation.................................................................................. 10.6 - 10.7 Electrical harnesses.......................................................................................................... 10.8 - 10.9 Electrical system - 1st line maintenance - Preventive maintenance..........................................10.11. CHAPTER 11. CHAPTER 12. X X. X X. X. X. X X X. X X. X X. X. X. Air intake and exhaust system...........................................................................................11.6 - 11.7 Engine/airframe system interfaces - Oil system.................................................................11.8 - 11.9 Engine/airframe system interfaces - Fuel system (2B-2B1)........................................... 11.10 - 11.11 Engine/airframe system interfaces - Fuel system (2D)..................................................11.12 - 11.13 Engine/airframe system interfaces - Electrical system...................................................11.14 - 11-15 Drains - Purges - Air vents.........................................................................................................11.16 Drains - Purges - Air vents.........................................................................................................11.17 Engine installation - 1st line maintenance - Preventive maintenance (2B-2B1).............11.20 - 11.21 Engine installation - 1st line maintenance - Preventive maintenance (2D)....................11.22 - 11.23 Troubleshooting - Anomalies during engine shut-down.............................................................. 12.6. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 0.15. INDEX OF PAGES PER VARIANTS. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). INDEX OF PAGES PER VARIANTS.

(18) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. INDEX OF PAGES PER VARIANTS 2B-2B1. 2D. X. X X. X X. X X. CHAPTER 13. Questionnaire 3......................................................................................................................... 13.13 Questionnaire 4......................................................................................................................... 13.17 Questionnaire 4......................................................................................................................... 13.18 Questionnaire 4......................................................................................................................... 13.22 Questionnaire 4......................................................................................................................... 13.23 Questionnaire 4......................................................................................................................... 13.26. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 0.16. INDEX OF PAGES PER VARIANTS. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). (CONTINUED).

(19) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. The abbreviations / symbols shown below may be used during training: A/C................. Aircraft AC.................. Alternating Current ACMS............. Automatic Control Monitoring System ACW............... Anti-clockwise AEO................ All Engines Operating AFCS.............. Automatic Flight Control System APM................ Auto Pilot Module ATA................. Air Transport Association ATS................. Air Traffic Services BITE............... Built-In Test Equipment CAN................ Controller Area Network cc/hr................ Cubic centimetres per hour CFT................. Frequency/Voltage Converter cSt.................. CentiStoke CW.................. Clockwise daN................. decaNewtons dB................... Decibels DC.................. Direct Current DDR................ DECU Digital Read-out DECU............. Digital Engine Control Unit DGAC............. Direction Générale de l'Aviation Civile EASA.............. European Aviation Safety Agency EBCAU .......... Engine Back-up Control Auxiliary Unit Ec................... Kinetic energy EDR................ Engine Data Recorder. For training purposes only © Copyright - Turbomeca Training. EECU............. Engine Electronic Control Unit EGT................ Exhaust Gas Temperature FAA................. Federal Aviation Administration FADEC........... Full Authority Digital Engine Control FCU................ Fuel Control Unit FLI.................. First Limit Indicator FM.................. Flight Manual FMU................ Fuel Metering Unit FOD................ Foreign Object Damage ft..................... Feet FWD............... Forward G..................... Mass air flow g..................... Grams HE.................. High Energy HF................... Human Factor HFC................ Hourly Fuel Consumption HP................... Horsepower HP................... High Pressure Hz................... Hertz ICAO............... International Civil Aviation Organisation ICP.................. Intermediate Contingency Power ID.................... Identification IFDS............... Integrated Flight Display System IIDS................ Integrated Instrument Display System ILS.................. Integrated Logistics Support. Edition: February 2012. 0.17. LIST OF ABBREVIATIONS. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). LIST OF ABBREVIATIONS.

(20) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. LIST OF ABBREVIATIONS ISA.................. International Standard Atmosphere ISV.................. Servo-valve intensity kHz................. Kilohertz kPa................. Kilopascal kW.................. Kilowatt lb..................... Pound lb/HP.hr........... Pounds per Horse Power per hour lb/hr................ Pounds per hour lb/sec. ............ Pounds per second LP................... Low Pressure LRU................ Line Replaceable Unit LTT................. Learning Through Teaching LVDT............... Linear Variable Differential Transducer m..................... Metres mA.................. Milliamperes MAX................ Maximum MCP................ Max Continuous Power MCQ............... Multiple-choice Questionnaire MGB............... Main gearbox MHz................ Megahertz MIN................. Minimum mm.................. Millimetre MTBF.............. Mean Time Between Failure MTBUR........... Mean Time Between Unscheduled Removal. For training purposes only © Copyright - Turbomeca Training. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). (CONTINUED). MTCP............. Maintenance Test Control Panel MTOP............. Maximum Take-Off Power mV.................. Millivolts N..................... Rotation speed N1, Ng............ Gas generator rotation speed N2, NTL.......... Power turbine rotation speed NGV................ Nozzle Guide Vane NMD............... Navigation and Mission Display NR.................. Rotor rotation speed O/S................. Overspeed OEI................. One Engine Inoperative P..................... Pressure P3................... Compressor outlet pressure PCMCIA.......... Personal Computer Memory Card International Association PH.................. Oil pressure POS................ Position ppm................ Parts per million PSI.................. Pounds per Square Inch PSID............... Pounds per Square Inch Differential PT................... Power Turbine RAM................ Random-Access Memory ROM............... Read-Only Memory rpm................. Revolutions per minute RTD................ Resistive Temperature Device. Edition: February 2012. 0.18. LIST OF ABBREVIATIONS.

(21) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. (CONTINUED). SFC................ Specific Fuel Consumption shp.................. Shaft horse power SI.................... International System SMM............... Safety Management Manual SMS................ Safety Management System SRU................ Shop Repleacable Unit t...................... Time T..................... Temperature T/O.................. Take-Off TBO................ Time Between Overhauls TET................. Turbine Entry Temperature TOT................ Turbine Outlet Temperature TRQ................ Torque US G............... US Gallon VAC................ Volts, Alternating Current VDC................ Volts, Direct Current VEMD............. Vehicle and Engine Multi-function display VMS................ Vehicle Monitoring System W.................... Power WF.................. Fuel flow XBV................ Bleed Valve position XCP................ Collective pitch position XMV................ Metering Valve position XPa................. Pedal position signal XTL................. Pedal position signal Z..................... Altitude Zp................... Pressure altitude For training purposes only © Copyright - Turbomeca Training. °C................... Degrees Celsius °F.................... Degrees Fahrenheit °K.................... Degrees Kelvin ±...................... Positive and negative for electrical circuits Ω..................... Ohm ∆..................... Difference ∆P................... Pressure difference %.................... Percent <..................... Less than >..................... More than ω..................... Angular velocity *...................... Datum (e.g. N1* = N1 datum). Edition: February 2012. 0.19. LIST OF ABBREVIATIONS. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). LIST OF ABBREVIATIONS.

(22) Training Notes 1st line maintenance course. ARRIEL 2B-2B1-2D. UNIT. Length. 1 mm 1 m. Volume. 1 dm3 = 1 litre. Mass. 1 kg. = 2.2 lb. Power. 1 kW. = 1.34 HP. Temperature. °C °K. Pressure. 1 kPa = 0.01 bar . = 0.145 PSI. Flow (air, oil, fuel). 1 kg/s. = 2.2 lb/sec.. Specific Fuel Consumption . For training purposes only © Copyright - Turbomeca Training. International System. 1 g/kW.h. Edition: February 2012. British or American Systems. = 0.039 inches = 3 ft 3 inches = 39 inches = 0.26 US gallons. = (°F-32).5/9 = [(°F-32).5/9] + 273. = 0.00164 lb/HP.hr 0.20. CONVERSION TABLE. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). CONVERSION TABLE.

(23) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). 1 - INTRODUCTION - General information............................................................................... 1.2 - Training programme.............................................................................. 1.4 - 1.5. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 1.1. INTRODUCTION.

(24) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. GENERAL INFORMATION TURBOMECA Training. Adequate training is essential for obvious safety reasons, but also to reduce additional maintenance costs incurred by unjustified removals and excessive downtime.. In accordance with TURBOMECA support's proximity policy, TURBOMECA Training has developed a worldwide training network: it has an official office or Training Center for each continent.. "Greater knowledge leads to greater efficiency".. TURBOMECA Training courses can therefore be conducted worldwide:. Objectives of training. - In the TURBOMECA France reference Training Center. The main objective is the acquisition of the knowledge required for the tasks to be achieved (know and know how).. - In the TURBOMECA USA reference Training Center - In the TURBOMECA do Brasil reference Training Center. Further information is also communicated to widen the skill and the experience of the trainee.. - In other TURBOMECA subsidiaries, e.g. TURBOMECA AUSTRALASIA or TURBOMECA ASIA PACIFIC (Singapore). Training approach. - In delegated Training Centers. - Performance based training according to task analysis, with classroom sessions, student involvement, practical work and troubleshooting techniques. - In TURBOMECA approved Training Centers. - Advanced training aids: training notes, multimedia courseware (or Computer Aided Presentation) and demonstration training engine - Instructors trained on the product and in training methods, and qualified by TURBOMECA - Courses are taught in English and French.. For training purposes only © Copyright - Turbomeca Training. - Directly on the customer's site. The training courses are conducted by an instructor detached from TURBOMECA or by a TURBOMECA qualified and accredited instructor.. TURBOMECA training contact The focal point for all your TURBOMECA Training needs is the "TURBOMECA Operator On-Line Support" (TOOLS) web site: www.turbomeca-support.com. Edition: February 2012. 1.2. INTRODUCTION. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). "The power of knowledge".

(25) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. OBJECTIVES OF TRAINING. Adequate training is essential for obvious safety reasons, but also to reduce additional maintenance costs incurred by unjustified removals and excessive downtime. TRAINING APPROACH. "Greater knowledge leads to greater efficiency". North America Area TM USA RTC. Europe Africa Middle East. The focal point for all your TURBOMECA Training needs:. www.turbomeca-support.com. TM F RTC. Corporate TURBOMECA Training. TAP RTC. TM B RTC South America Area. GENERAL INFORMATION For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. Asia Pacific Australasia. RTC ................. Reference Training Center TM ................... TURBOMECA TM F ................ TURBOMECA France TM USA........... TURBOMECA USA TM B................ TURBOMECA do Brasil TAP ................. TURBOMECA Asia Pacific. 1.3. INTRODUCTION. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). TRAINING: "The power of knowledge".

(26) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. The training programme is established to meet the training requirements and takes into consideration ATA 104 recommendations and the requirements of the various authorities concerned.. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). TRAINING PROGRAMME. It should be noted that the "classroom sessions" alternate with periods devoted to demonstrations, practical exercises and visits.. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 1.4. INTRODUCTION.

(27) ARRIEL 2B-2B1-2D. OBJECTIVE. DURATION. FAMILIARISATION. At the end of this course, the student will be able to describe the engine, to explain its principle of operation and to identify the main components of the engine and systems.. 2 DAYS. 1ST LINE MAINTENANCE COURSE. At the end of this course, the student will be able to identify the engine components, to describe and to explain the operation of the engine and its systems, to carry out maintenance procedures (engine installed in the airframe) and troubleshooting.. 5 DAYS. 2ND LINE MAINTENANCE COURSE. At the end of this course, the student will be able to identify the engine components, to carry out all the maintenance procedures (engine removed from the airframe), mainly the removal/installation of modules and shop replaceable units. PROGRAMME: The programme mainly includes practical work. This programme can be carried out after the 1st line maintenance programme.. 3 DAYS. At the end of the course, the trainee will be able to carry out the intramodular maintenance procedures (deep maintenance). 3RD LINE MAINTENANCE COURSE. PROGRAMME: This course consists entirely of practical work and the students must have certain qualifications. The course documentation consists of Maintenance Technical Instructions and the Maintenance Manual. The qualification awarded at the end of this course has certain limits and requires regular renewal.. FROM 3 DAYS TO 3 WEEKS. At the end of this course, the trainee will have a greater understanding of the engine and its systems. REFRESHER. NOTE: This course is recommended for technicians who have attended the first line maintenance course, after about one year of experience on the engine type.. 2 DAYS. At the end of this course, the trainee will be able to better identify and correct operating problems. TROUBLESHOOTING. FUEL AND CONTROL SYSTEM. ENGINE DOCUMENTATION. NOTE: This course is recommended for technicians who have attended the first line maintenance course, after about one year of experience on the engine type. At the end of this course, the trainee will have an in-depth understanding of the engine fuel and control systems. NOTE: This course is recommended for technicians who have attended the first line maintenance course, after about one year of experience on the engine type. At the end of this course, the trainee will be able to understand and use the engine documentation. NOTE: A general knowledge of engines is recommended.. 2 DAYS. 2 DAYS. 2 DAYS. TRAINING REQUIREMENTS / ATA 104 RECOMMENDATIONS / REQUIREMENTS OF THE VARIOUS AUTHORITIES CONCERNED. TRAINING PROGRAMME For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 1.5. INTRODUCTION. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). TRAINING PROGRAMME. Training Notes 1st line maintenance course.

(28) Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page).

(29) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). 2 - POWER PLANT - Power plant (71-00-00) .......................................................................... 2.2 - Principle of adaptation to the helicopter ............................................ 2.8 - Main characteristics ............................................................................. 2.10 - Design and development ..................................................................... 2.14 - Maintenance .......................................................................................... 2.16 • Maintenance concept ........................................................................ 2.16 • Life limitations.................................................................................... 2.18 • Preventive and corrective maintenance........................................... 2.20 • Technical publications - Presentation ............................................. 2.22 • Technical publications - Advisory notices ...................................... 2.24 • Lubricants / Fuels / Materials (71-00-02) - Preservation and storage (71-05-01) .............................................................................. 2.26 • Safety Management - Human Factors .............................................. 2.28 - 2.29. (XX-XX-XX): Page references which deal with the subject in the maintenance documentation. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 2.1. POWER PLANT.

(30) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. POWER PLANT. Function The power plant provides power by transforming the energy contained in the air and fuel into shaft power.. Main characteristics - Type: free turbine turboshaft engine, with forward power drive, external power transmission shaft - Concept: modular - Max. Take-Off Power (MTOP) (engine installed): • 2D: 598 kW (802 shp), ISA, sea level, with torque limitation • 2B-2B1: 557 kW (746 shp) - Specific fuel consumption: • 2B-2B1: 376 g/kW.h at 400 kW • 2D: 370 g/kW.h at 400 kW. - Approximate dimensions and mass of the engine: • Length: 1166 mm (45.9 inches) • Width: 609 mm (23.8 inches) • Height: 465.5 mm (18.2 inches) • Mass dry (with free wheel): - 2B-2B1: 136 kg (300 lb) - 2D: 139 kg (306 lb). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). GENERAL. - Approximate dimensions and mass of the EECU: • Length: 300 mm (11.7 inches) • Width: 200 mm (7.8 inches) • Height: 80 mm (3 inches) • Mass: 4.2 kg (9.24 lb).. Main components - Turboshaft engine with its equipment - Engine Electronic Control Unit (EECU).. - Output shaft speed: • 2D: 6000 rpm (at 100% N2) • 2B-2B1: 5990 rpm (at 100% N2). For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 2.2. POWER PLANT.

(31) Training Notes 1st line maintenance course. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). ARRIEL 2B-2B1-2D. GAS AIR. POWER PLANT. POWER. Type: Free turbine FUEL. 2D: 6000 rpm at 100% N2 2B-2B1: 5990 rpm at 100% N2. Concept: Modular Mass dry (with free wheel): 2B-2B1: 136 kg (300 lb) 2D: 139 kg (306 lb). Max. Take-Off Power (MTOP): (engine installed) 2D: 598 kW (802 shp), ISA, sea level, with torque limitation 2B-2B1: 557 kW (746 shp). ENGINE ELECTRONIC CONTROL UNIT (EECU). Specific fuel consumption: 2B-2B1: 376 g/kW.h at 400 kW 2D: 370 g/kW.h at 400 kW. GENERAL. POWER PLANT For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 2.3. POWER PLANT.

(32) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. POWER PLANT This description considers the functional components of the engine.. Gas generator. - External transmission shaft located in a protection tube which connects the reduction gearbox to the accessory gearbox - An coaxial output shaft with main and rear power drive is fitted in the transmission shaft which drives it through a free wheel unit.. - Single-stage axial compressor - Centrifugal compressor - Annular combustion chamber with centrifugal fuel injection - Single-stage axial turbine.. Transmission shaft. Accessory gearbox - Gearbox containing the accessory drive train and the main power drive.. Power turbine - Single-stage axial turbine.. Exhaust pipe - Elliptical, axial exhaust pipe.. Reduction gearbox - Reduction gearbox comprising three helical gears.. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 2.4. POWER PLANT. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). DESCRIPTION.

(33) Training Notes 1st line maintenance course. ARRIEL 2B-2B1-2D. Axial compressor. Centrifugal compressor. Combustion chamber. POWER TURBINE. Turbine. EXHAUST PIPE. ACCESSORY GEARBOX Accessory drive train Power drive (rear). Main power drive. Free wheel unit. TRANSMISSION SHAFT. REDUCTION GEARBOX. DESCRIPTION. POWER PLANT For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 2.5. POWER PLANT. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). GAS GENERATOR.

(34) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. OPERATION. Power turbine. This part deals with the parameters and the adaptation of the gas generator and power turbine.. The power turbine operation is defined by the balance between the power received from the gas generator and the torque applied on the shaft, that is the torque TRQ and the rotation speed N2.. Component adaptation For the engine operation, two functional assemblies can be considered: - The gas generator which provides kinetic energy - The power turbine which transforms the gas energy into mechanical power on a shaft. The two assemblies have different rotation speeds.. - The torque TRQ is a function of the N2 rotation speed. - At constant N2 speed, the power is only a function of the torque. The gas generator operation is defined by: - The air mass flow G (air flow which enters the engine) - The air pressure P3 and air temperature T3 at the centrifugal compressor outlet - The fuel flow WF injected into the combustion chamber. - The rotation speed N1 of the gas generator. The operation is represented by the diagram which shows the power W, the rotation speeds N1 and N2 and the max. torque limit TRQ imposed by the mechanical transmission:. - The power W is equal to the torque TRQ multiplied by the angular velocity ω. Gas generator. - The gas temperature TET at the turbine entry. Operation. - The engine parameters can be represented as a function of a reference parameter; N1 for example.. Control The operation of the engine is controlled and monitored by an Engine Electronic Control Unit.. - The kinetic energy Ec supplied to the power turbine.. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 2.6. POWER PLANT. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). POWER PLANT.

(35) Training Notes 1st line maintenance course. ARRIEL 2B-2B1-2D. N1 (rotation speed). G (air mass flow). P3, T3 (compressor outlet pressure and temperature). POWER TURBINE TRQ (shaft torque) Ec (kinetic energy). N2 (constant rotation speed) W (shaft power). TET (turbine entry temperature) WF (fuel flow). W. ENGINE PARAMETERS. TRQ Q. Ma. qu. or. t x.. R eT. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). GAS GENERATOR. Isospeeds N1. G. W = TRQ . ω ω = 2. .N 60. P0 W C HF T TE. / P3. SFC. N2 Power W and speeds N1, N2. N2 Torque TRQ as a function of N2. N1 P3/P0: Compression ratio HFC: Hourly Fuel Consumption SFC : Specific Fuel Consumption. OPERATION. POWER PLANT For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 2.7. POWER PLANT.

(36) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. Installation requirements. Power transmission in a single engine configuration. The main functional requirements of the installation are:. The mechanical power supplied by the engine, is used to drive the helicopter rotors through a mechanical transmission. This power drives: - The main rotor (approx. 82%). - Constant rotor rotation speed NR in all operating conditions - Max. torque limit TRQ (usually imposed by the aircraft transmission) - Complete engine protection (N1 and N2 speeds, TET, acceleration control ∆N1/∆t…).. - The tail rotor (approx. 10%) - The main gearbox (approx. 8%).. Adaptation to requirements. In a single engine configuration, the engine is installed at the rear of the main gearbox.. To obtain a constant power turbine (N2) rotation speed, the power supplied by the engine is automatically adapted to the demand. This adaptation is carried out the control system which meters the fuel flow injected into the combustion chamber so as to deliver the required power (variation of the gas generator N1 rotation speed) while keeping the engine within its operational limits.. The power turbine of the engine is mechanically connected to the main gearbox which drives the main rotor. A drive from the rear of the engine drives the tail rotor drive shaft.. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 2.8. POWER PLANT. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). PRINCIPLE OF ADAPTATION TO THE HELICOPTER.

(37) Training Notes 1st line maintenance course. ARRIEL 2B-2B1-2D. ENGINE 100%. MAIN GEARBOX 8% POWER TRANSMISSION IN SINGLE ENGINE CONFIGURATION N2. TAIL ROTOR 10%. W - Power. ∆W. NR N1, N2, TET, ∆N1/∆t ∆N2 ENGINE. ∆N2 time. Max. torque TRQ. ∆t ADAPTATION TO REQUIREMENTS. INSTALLATION REQUIREMENTS. PRINCIPLE OF ADAPTATION TO THE HELICOPTER For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 2.9. POWER PLANT. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). MAIN ROTOR 82%.

(38) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. MAIN CHARACTERISTICS The engine ratings correspond to given conditions of helicopter operation. The ratings are generally defined under determined speed and atmosphere conditions (altitude and temperature). The following ratings are considered:. Note: 2D: The engine's TBO potential is not penalized. However, when the max. damage is reached, a deep maintenance (3rd level) procedure must be performed on module M03 to replace the gas generator turbine blades.. - Max. Take-Off Power (MTOP): max. rating which can be used during take-off. This rating has a limited duration (5 min. continuous) - Max. Continuous Power: rating which can be used without time limitation (this does not imply that it is used permanently) - 2D: Max. Take-Off Power 30 min. (MTOP 30 min.): • As soon as T4.5 > 600K (330°C) and N1 > 40%, the creep-damage counter is incremented continuously in proportion to the T4.5 and the N1. This incrementing is not linked to an engine rating or a time value. • The counter value is indicated in the VEMD "FLIGHT REPORT" screen when the engine stopped.. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 2.10. POWER PLANT. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). ENGINE RATINGS.

(39) Training Notes 1st line maintenance course. N1. MAX.. MTOP (5 min.) 557 kW. MTOP (30 min.). MTOP (5 min.). 598 kW. 598 kW. Max. Continuous Power. Max. Continuous Power. (continuous). (continuous). A.E.O. RATINGS. A.E.O. RATINGS. 2B-2B1 VERSIONS. 2D VERSION. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). ARRIEL 2B-2B1-2D. Note: 2D: Use of MTOP 30 min.: the engine's TBO potential is not penalized. However, when the max. damage is reached, a deep maintenance (3rd level) procedure must be performed on module M03 to replace the gas generator turbine blades.. ENGINE RATINGS. MAIN CHARACTERISTICS For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 2.11. POWER PLANT.

(40) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. MAIN CHARACTERISTICS The engine is designed to operate within a given climatic envelope. The envelope is defined by:. Note: The engine operates within various limits: rotation speeds, temperatures, pressures…. Refer to corresponding chapters and official publications.. - The atmospheric temperature T0 - The pressure altitude Zp - And lines of standard atmosphere.. Flight envelope The flight envelope is illustrated by the T0/Zp graph and the lines of standard atmosphere, with the max. tropical zone and the min. arctic zone.. Starting and relight envelope The starting and relight envelope is defined in the same way, but it can be affected by the specifications of oil and fuel used, and sometimes by special procedures.. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 2.12. POWER PLANT. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). ENGINE OPERATING ENVELOPE.

(41) Training Notes 1st line maintenance course. Starting and relight envelope limit. 7012 m (23000 ft). PRESSURE ALTITUDE Zp ISA +35°. 7012 m (23000 ft). ISA +40°. L. PICA. . TRO. MAX. ERE. SPH. -50°C (-58°F). TMO. . ARCTIC. L. PICA. 0 -610 m (-2000 ft). RD A. NDA. STA. MIN. . TRO. MAX. ERE. SPH. TMO. . ARCTIC. RD A. NDA. STA. 6100 m (20000 ft). Depends on oil and fuel specifications. Can also depend on special procedures. +50°C (+122°F). TEMPERATURE 0 T0 -610 m (-2000 ft). TEMPERATURE T0 -50°C -40°C (-58°F) (-40°F). 2B-2B1: FLIGHT, STARTING AND RELIGHT ENVELOPE. +55°C (+131°F). 2D: FLIGHT, STARTING AND RELIGHT ENVELOPE Note: Below -40°C (-40°F), a specific heating procedure must be applied to the Engine Electronic Control Unit.. ENGINE OPERATING ENVELOPE. MAIN CHARACTERISTICS. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 2.13. POWER PLANT. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). PRESSURE ALTITUDE Zp. MIN. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). ARRIEL 2B-2B1-2D.

(42) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. DESIGN AND DEVELOPMENT. - Squirrel EC 130 B4 (ARRIEL 2B1 / ARRIEL 2D) but other applications can be expected.. The engine is designed to meet the aircraft propulsion requirements and particularly for the new generation of helicopters. The engine design is based on: - An optimised thermodynamic cycle which gives high performance - Simple and reliable components giving a good supportability, and a good maintainability to reduce the costs.. Stages of development. Maintenance concept The main aspects of the maintenance concept are: - Full modularity - Good accessibility - Reduced removal and installation times - "On-condition" monitoring - High initial TBO. - Launch ARRIEL 2: 1992 - First flight: • 2B-2B1: 1994 • 2D: 2009 - Introduction into service: • December 1997 - ARRIEL 2B • March 2001 - ARRIEL 2B1.. - Low cost of ownership: • Low production costs • Durability (defined and proven TBO and life limits) • High reliability • Low fuel consumption.. Applications. ARRIEL - According to TURBOMECA tradition: name of a Pyrenean lake for the turboshaft engines.. Engine designation. The ARRIEL 2B, 2B1 and 2D currently power the single-engine helicopters: - Squirrel AS 350 B3 (ARRIEL 2B) - Squirrel AS 350 B3+ (ARRIEL 2B1) - Squirrel AS 350 B3e (ARRIEL 2D). For training purposes only © Copyright - Turbomeca Training. - 2: Type - B: Variant - 1: Version.. Edition: February 2012. 2.14. POWER PLANT. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Principles of design.

(43) Training Notes 1st line maintenance course. ARRIEL 2B-2B1-2D. MAINTENANCE CONCEPT. Optimised thermodynamic cycle. - Full modularity - Good accessibility - Reduced removal and installation times - "On-condition" monitoring - High initial TBO - Low cost of ownership: • Low production costs • Durability (defined and proven TBO and life limits) • High reliability • Low fuel consumption.. Simple and reliable components. Supportability Maintainability. High performance. Cost reduction. PRINCIPLES OF DESIGN. 1994 First flight (2B). 2001 Introduction into service (2B1). 1997 Introduction into service (2B). ARRIEL lake SQUIRREL AS 350 B3 ARRIEL 2B (x 1) SQUIRREL AS 350 B3+ ARRIEL 2B1 (x 1) SQUIRREL AS 350 B3e ARRIEL 2D (x 1). 2009 First flight (2D). 1992 Launch STAGES F DEVELOPMENT. SQUIRREL EC 130 B4 ARRIEL 2B1 (x 1) ARRIEL 2D (x 1). ARRIEL 2B1 Name of a Pyrenean lake for the turboshaft engines 2: Type B: Variant 1: Version. ENGINE DESIGNATION. APPLICATIONS. DESIGN AND DEVELOPMENT For training purposes only © Copyright - Turbomeca Training. Example: ARRIEL:. Edition: February 2012. 2.15. POWER PLANT. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Engine design.

(44) ARRIEL 2B-2B1-2D. Training Notes 1st line maintenance course. MAINTENANCE CONCEPT. 2nd line maintenance: engine maintenance in workshop.. Introduction. - Corrective maintenance: SRU and module removal and installation.. The engine is designed to have a high availability rate with reduced maintenance. The main aspects of the maintenance concept are the following: - Effective modularity - Good accessibility - Reduced removal and installation times - On-condition facility - Quick repair.. Maintenance levels Four maintenance levels can be considered: 1st line maintenance: - Scheduled and preventive maintenance • Checks and inspections • Life limit or completed TBO removal - Corrective maintenance • Fault detection • Component replacement (LRU) • Check.. For training purposes only © Copyright - Turbomeca Training. 3rd line maintenance: deep maintenance which involves module repairs. - Corrective maintenance: component replacement. 4th line maintenance: overhaul and repair in specific workshop. - Maintenance scheduled when the TBO is completed or when the life limit of a component is reached - Corrective maintenance.. Other aspects of maintenance Refer to the following pages. Note 1: LRU - Line Replaceable Unit. SRU - Shop Replaceable Unit. Note 2: The maintenance steps are determined by the operator taking into account the difficulties, the personnel and logistic considerations.. As far as the engine manufacturer is concerned, the current maintenance procedures (1st, 2nd line) are defined and described in the maintenance manual. Deep maintenance (3rd line) and overhaul (4th line) are described in other documents and are subject to particular license agreements.. Edition: February 2012. 2.16. POWER PLANT. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). MAINTENANCE.

(45) Training Notes 1st line maintenance course. MAINTENANCE LEVELS. 1st LINE MAINTENANCE - Scheduled or preventive maintenance - Corrective maintenance (LRU). 2nd LINE MAINTENANCE - Corrective maintenance (modules, SRU). Maintenance Manual (Operator or Service Centre or Maintenance Centre). 4th LINE MAINTENANCE 3rd LINE MAINTENANCE (engine removed) (engine removed in specific workshop) - Scheduled maintenance - Deep maintenance (overhaul, repair) - Corrective maintenance Maintenance Technical Instruction (Operator or Maintenance Centre). Overhaul Manual (Repair Centre). MAINTENANCE CONCEPT. MAINTENANCE. For training purposes only © Copyright - Turbomeca Training. Edition: February 2012. 2.17. POWER PLANT. Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). Training information only delivered during a Turbomeca Training course and not updated after the course (refer to the FOREWORD page). ARRIEL 2B-2B1-2D.

No results found