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    • The Assured Deployment Of Inflatable Braking Device Of The Descent Vehicle In Planets’ Atmosphere With Indefinite Parameters

    Paper number

    IAC-07-A3.4.02

    Author

    Mr. Peter Merkulov, Moscow Aviation Institute (MAI), Russia

    Coauthor

    Mr. Veniamin V. Malyshev, Moscow Aviation Institute (MAI), Russia

    Coauthor

    Dr. Valeriy Usachov, Moscow Aviation Institute (MAI), Russia

    Year

    2007

    Abstract
    The successful deployment of the Inflatable Braking Device (IBD) providing soft landing on the surface of the planet is as important as spacecraft insertion to the interplanetary trajectory. 
Moreover, taking into account considerable indetermination of the aerodynamic braking conditions in little-studied atmosphere of the planet, successful deployment of IBD defines not only the whole mission reliability but is a complicated task course of its methodical support and technical realization.
Experimental practice of IBD deployment shows that the successful realization of the spacecraft (SC) aerodynamic braking needs: the SC velocity at the moment of IBD deployment to be less than fixed Mach number and the command of IBD deployment to be given at the altitude which is not less than fixed one. The indetermination of the atmosphere parameters of the planet makes difficulties for the simultaneous fulfillment of these conflicting requirements.
This study shows that the SC aerodynamic characteristics including IBD characteristics have to be determined to ensure the fulfillment of these two requirements in the worst descent case. It will allow considering that the SC aerodynamic braking system is reliable.
Beside that the analysis of the descent trajectory with considerably undetermined atmosphere parameters in minimax setting was carried out by the example of the descent of SC with IBD on Mars.
It’s shown that the successful IBD deployment can be provided if we know the information about maximum atmosphere parameters spread.
The results of the study are illustrated with graphical charts.
    Abstract document

    IAC-07-A3.4.02.pdf

    Manuscript document

    IAC-07-A3.4.02.pdf (🔒 authorized access only).

    To get the manuscript, please contact IAF Secretariat.