forward flight
Measuring wing kinematics, flight trajectory and body attitude during forward flight and turning maneuvers in dragonflies
... To study turning maneuvers involving obvious changing of the insect attitude, the description of wing kinematics should be based on a local body-centered coordinate system, together with the body attitude and ...
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Numerical Analysis of an Isolated Main Helicopter Rotor in Hovering and Forward Flight
... and forward flight was successful simulated using commercial computational fluid dynamic software ...and forward flight ...for forward flight greater than 20 ...
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Visual motion speed determines a behavioral switch from forward flight to expansion avoidance in Drosophila
... during flight along these ...with forward flight in the absence of body rotations or ...balances forward flight with collision-avoidance is simple: (1) forward flight is ...
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A computational study of the aerodynamics and forewing hindwing interaction of a model dragonfly in forward flight
... simulated flight could better approximate the real ...each flight speed, four phase differences –0°, 60°, 90° and 180° (the hindwing leads the forewing motion) – are ...straight forward flight ...
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Aerodynamic force generation and power requirements in forward flight in a fruit fly with modeled wing motion
... of forward flight in ...as flight speed ...increasing forward speed, a trend that was offset by an increasing thrust component from the downstroke ...
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Interactional aerodynamics and acoustics of a hingeless coaxial helicopter with an auxiliary propeller in forward flight
... used to maintain zero net yawing moment on the system. The XH-59A employed differential cyclic pitch input to optimise the performance of the ro- tor (Refs. 2, 13, 22, 23), but in the present anal- ysis this feature of ...
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The role of visual and mechanosensory cues in structuring forward flight in Drosophila melanogaster
... during forward flight has been strongly suggested by experiments in a taxonomically diverse range of ...flying forward, could use such a mechanism to compensate for unintended ...
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On The Use of Non uniform inflow Model for Aerodynamics Analysis Helicopter Rotor Blade in the Forward Flight
... in forward flight by using a non uniform inflow models are ...geometry, flight condition as well as the required numerical parameter imposed by the blade element ...
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Feasibility Study on Improving of Helicopter Forward Flight Speed via Modification of the Blade Dimension and Engine Performance
... helicopter forward flight speed via applying the different combination between rotor and ...better forward flight speed than the existing rotor ...level flight was analysed by using the ...
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The Application of Combined Momentum – Blade Element Theory for Aerodynamics Analysis Helicopter Rotor Blade in the Forward Flight
... Abstract: Present work introduced the aerodynamics analysis of rotor blade helicopter in forward flight. The analysis used a combination between a Momentum Theory and The Blade Element Theory. Here the ...
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Improved solution approach for aerodynamics loads of helicopter rotor blade in forward flight
... P re se n te d m e th o d fo r b la d e a ir-lo a d s calculation has been implemented in a computer code. Forward flight application is presented for SA 341 “Gazelle” helicopter at moderate forward ...
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Computationally Efficient Force and Moment Models for Propellers in UAV Forward Flight Applications
... Abstract: Two low-order, parametric models are developed for the forces and moments that a rotating propeller undergoes in forward flight. The models are derived using a first-principles-based approach, and ...
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The cost of hovering and forward flight in a nectar feeding bat, Glossophaga soricina, estimated from aerodynamic theory
... during flight in animals can best be understood and quantified when both theoretical and empirical approaches are used ...of flight in a neotropical nectar- feeding bat Glossophaga soricina ...
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Mechanics of Forward Flight in Bumblebees: II QUASI STEADY LIFT AND POWER REQUIREMENTS
... Calculated horizontal components of the wing lift and drag are very dependent upon estimates of the relative velocity and effective angle of incidence, which for flapping wings are diffi[r] ...
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Shape, flapping and flexion: wing and fin design for forward flight
... In this paper, we investigate factors that may influence the evolution of flapping wings and fins using an unsteady potential flow analysis and measured kinematics to calculate the forces produced by a flapping wing. ...
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The mechanics of flight in the hawkmoth Manduca sexta I Kinematics of hovering and forward flight
... free flight of the hawkmoth Manduca sexta ...insect flight speed, but systematic studies of individuals flying over a range of speeds ...steady flight sequences for individual moths over the entire ...
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Mechanics of Forward Flight in Bumblebees: I Kinematics and Morphology
... Horizontal coverage of film image Distance from object plane to lens center Angle of attack Chord angle relative to horizontal x' axis Angle between wing chord and z' axis Stroke plane a[r] ...
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Sensitivity of tail rotor noise to helicopter configuration in forward flight
... is captured by the VTM-acoustics method. When op- erating as part of a MR/TR system, the top-forward tail rotor produces a zone of high SPL ahead of the main rotor, as shown in Fig. 4. In contrast, the top- aft ...
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Power estimation for four seater helicopter
... However, as the power available is decreasing with altitude (lower density), it can be seen that the helicopter reached the hover ceiling at approximately 7000 ft (2134 m). This is reasonable since it is over the ...
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Wing Shape and Flight Behaviour in Butterflies (Lepidoptera: Papilionoidea and Hesperioidea): A Preliminary Analysis
... Slow forward flight During slow forward flight both Papilio and Graphium had greater stroke amplitude, mean angular wing velocity and stroke plane angle, but lower wing beat frequency th[r] ...
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