Optimal switching strategy for radially accelerated trajectories

Details Optimal switching strategy for radially accelerated trajectories Optimal switching strategy for radially accelerated trajectories

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cemda.105..361q&link_type=abstract

Celestial Mechanics and Dynamical Astronomy, Volume 105, Issue 4, pp.361-377

Astronomy and Astrophysics

Astronomy

4

Low-Thrust Trajectories, Mission Analysis, Solar System Exploration

Scientific paper

This paper studies the problem of a spacecraft subject to an outward radial thrust, with constant modulus, that may be switched on or off at suitable time intervals. The problem is to find the optimal strategy to guarantee the possibility of transferring the spacecraft from an initial to a final position in a given time interval using the least amount of thrust level. The problem is solved in an optimal framework, using an indirect approach. A number of different mission scenarios are studied in detail: escape missions, flyby missions and rendezvous missions. In the latter case the spacecraft uses a hybrid system comprising an high thrust propulsion system for the final impulsive maneuver. The optimal switching strategy allows one to substantially decrease the thrust level when compared to the continuous case (without thrust modulation).

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