One procedure proposed to accomplish soft lunar landing is to use high thrust main engine stage to remove most of approach velocity in open loop fashion, and low thrust vernier engine stage to control spacecraft; vernier stage employs terminal sensors to measure altitude and velocity, throttling to control descent rate, and may employ body maneuvering to control horizontal velocity; attempt is made to estimate interference that vernier rocket exhaust may ex ert on performance of Doppler and altimeter systems of lunar landing vehicle; it is found that exhaust does not significantly perturb any of systems.


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    Title :

    Vernier exhaust perturbations on Radar and Altimeter system during lunar landing


    Additional title:

    AIAA J


    Contributors:
    Molmud, P. (author)

    Published in:

    AIAA Journal ; 1 , n 12


    Publication date :

    1963


    Size :

    4 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :