On the calculation of low-thrust fail-safe trajectories

Details On the calculation of low-thrust fail-safe trajectories On the calculation of low-thrust fail-safe trajectories

Jul 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975aiaa.confqq...s&link_type=abstract

American Astronautical Society and American Institute of Aeronautics and Astronautics, Astrodynamics Specialist Conference, Nass

Astronomy and Astrophysics

Astronomy

Interplanetary Trajectories, Low Thrust Propulsion, Spacecraft Trajectories, Trajectory Analysis, Algorithms, Comets, Fail-Safe Systems, Flyby Missions, Solar Electric Propulsion, Spacecraft Guidance, Targets, Thrust Termination, Time Response, Trajectory Optimization

Scientific paper

A guidance algorithm is developed for a low-thrust spacecraft such that target intercept is possible in spite of premature thrust termination along the trajectory. Such a trajectory is called a 'fail-safe' trajectory and the spacecraft thrust is utilized to minimize the relative target-spacecraft approach speed. The fail-safe guidance algorithm is solved using the concept of a critical thrust plane and a non-critical thrust direction. Several examples of fail-safe guidance are presented for a solar-electric propulsion flyby mission to the comet Encke.

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