The experimental practice of Inflatable Braking Device (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.
展开▼
