Study on Propulsion Reconstruction for Manned Lunar Ascent
For the difficulty of astronauts'emergency survival during lunar ascent process if the en-gine is breakdown,the method to parallel multiple engines and reconfigure the propulsion system was proposed.The reconstruction strategy for 3 to 5 engines was analyzed,and the system reliability was estimated.The power reconstruction ascent trajectories for various fault conditions were calculat-ed and simulated with the energy optimal power ascent law,and the variation laws for propellent consumption and inject phase were obtained.Three emergency rendezvous strategies were designed for varied inject conditions.The results show that,the reliability for power reconstruction system with 3 to 4 engines can be improved to 0.9996 with respect to the reliability of 0.99 for one engine,and the rapid rendezvous can be achieved by adjusting the rendezvous strategy to assure the safe re-turn of astronauts.
manned lunar ascentemergency survivalpropulsion reconstructionrendezvous and docking
万方数据
维普
