Spacecraft formation
Pattern transition in spacecraft formation flying via the artificial potential field method and bifurcation theory
... In recent years many new and exciting space con- cepts have developed around spacecraft formation flying. This form of distributed system has the advantages of being extremely flexible and robust. This ...
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Autonomous navigation of a spacecraft formation in the proximity of an asteroid
... a formation of spacecraft to autonomously navigate in the proximity of a Near Earth ...each spacecraft with respect to the asteroid. Inter-spacecraft position measurements are then combined ...
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Optimal Spacecraft Formation Reconfiguration with Collision Avoidance Using Particle Swarm Optimization
... r spacecraft fo rmation reconfiguration in deep space environment using continuous lo w-thrust propulsion ...for spacecraft reconfiguration could be generated by the method we proposed in a relative short ...
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Optimal design for a NEO tracking spacecraft formation
... This paper presents the design and optimization of a set of orbits to allow a spacecraft to fly in formation with Apophis, orbiting around the Sun. The asteroid Apophis was chosen as the test case based on ...
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Small spacecraft formation-flying using potential functions
... The hyperbolic attractive potential is used in conjunction with a superquadric repulsive potential and has demonstrated its ability to perform decentralised, on-line motion planning of small spacecraft. A new ...
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Spacecraft formation flying using bifurcating potential fields
... A promising approach to overcome the limitations of the architectures discussed above is to develop behavioral control architectures in which all spacecraft interact producing an emergent global behaviour. One ...
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Spacecraft formation-flying using potential functions
... The superquadric repulsive potential enables good obstacle representation as it describes the obstacle real shape near its edges and provides spherically symmetric iso- distance surfaces away from obstacle edges, shown ...
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Parameter Governors for Coordinated Control of n Spacecraft Formations
... nominal spacecraft guidance controllers to steer a formation of n spacecraft to a set of desired unforced periodic reference trajectories in Hill ’ s frame with the correct phasing while satisfying ...
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A fractally fractionated spacecraft
... N spacecraft is ...The spacecraft are controlled through an APF that operates only along the edges of the graph with a pair-wise ...The spacecraft dynamics are described through the acceleration ...
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Fractal patterns in fractionated spacecraft
... N spacecraft is ...The spacecraft are controlled through APF which operate only along the edges of the graph with a pair-wise ...The spacecraft dynamics are described through the acceleration field x ...
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Semi Analytical Solution for Formation Flying Spacecraft Subject to Electromagnetic Acceleration
... for formation flying satellites using Electromagnetic ...the spacecraft, including the effect of Earth tilted/Non tilted magnetic dipole; b) the second part, which is experienced with the electric field in ...
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Virtual Spring- Damper Mesh-Based Formation Control for Spacecraft Swarms in Potential Fields
... distributed formation control methods presented in the literature, a basic assumption is that every agent knows its own position or ...for spacecraft formation missions, accurate absolute position ...
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Non-Keplerian orbits using low thrust, high ISP propulsion systems
... gains an extra free parameter - as discussed previously, several families of two-body orbits exist, parameterised by the choice of the orbital period. This choice does not exist in the three-body model due to the ...
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The Design and Implementation of Workflow Engine for Spacecraft Automatic Testing
... Spacecraft software testing is a matter of growing importance. However, because the testing efficiency is very low due to the complex testing flow, it becomes a tedious task. Our approach exploits workflow ...
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Investigating Miniaturized Electrodynamic Tethers for Picosatellites and Femtosatellites
... For the purposes of this study, the relatively short EDT considered here is assumed to be a “ semirigid ” structure. By this, we mean that the tether has both flexural rigidity to limit large tether deflection on orbit ...
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Reflection of the strahl within the foot of the Earth's bow shock
... the spacecraft were in the foreshock as opposed to the solar ...the spacecraft is, perforce, in the ...the spacecraft is in the so- lar wind and, conversely, when density is high (and bimodal), the ...
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A geostationary equivalent Polar observation system
... the spacecraft is simply decommissioned in this orbit, the orbit argument of perigee will drift around the orbit plane as the continuous low-thrust previously preventing this is removed; over long periods this may ...
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Plasma flow patterns in and around magnetosheath jets
... We have performed a statistical study of plasma flows in and around magnetosheath high-speed jets, based on 662 cases in which one THEMIS spacecraft observed a jet and an- other nearby THEMIS spacecraft ...
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Spacecraft reflectors thermomechanical analysis
... Antennas belong to the category of external spacecraft appendages exposed to thermal, radiation and mechanical environments [2]. So besides the surface imperfections due to assembly operations, manufacture ...
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Analogy to bi-elliptic transfers incorporating high- and low-thrust
... This is now defined at R2=223 which represents an intermediate orbit approximately 35 times greater than GEO radius. Table 2 shows the potential mass saving if the uprated T6 thruster is used on the spacecraft in ...
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