Final touchdown phases and a guidance and control methodology for a soft Moon landing |
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| Authors: | V N Likhachev Yu G Sikharulidze V P Fedotov |
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| Institution: | 1. Lavochkin Research and Production Association, ul. Leningradskaya 24, Khimki, Moscow oblast, 141400, Russia
2. Keldysh Institute of Applied Mathematics, Russian Academy of Sciences, Moscow, Russia
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| Abstract: | This article continues our study of spacecraft guidance and control for a soft Moon landing (see our article “Main braking phase for a soft Moon landing as a form of trajectory correction”). Rationale is given for the objectives of the subsequent (final touchdown) phases. Analytical relations for the main parameters are obtained, and the impact of various disturbing factors is estimated. A methodology is proposed for calculating the main parameters for the whole braking sequence from the sighting altitude of the main braking phase termination to braking engine thrust and its throttle range. |
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