Accession Number : AD0602391

Title :   A POSSIBLE COMPROMISE BETWEEN ROCKET AND ATMOSPHERIC BRAKING.

Descriptive Note : Scientific rept. no. 3,

Corporate Author : TRAINING CENTER FOR EXPERIMENTAL AERODYNAMICS RHODE-SAINT-GENESE (BELGIUM)

Personal Author(s) : Moulin,L.

Report Date : JUN 1964

Pagination or Media Count : 42

Abstract : An attempt was made to optimize the problem of recovering an interplanetary vehicle through the earth's atmosphere. Optimum conditions are defined as the ones which would minimize the dead weight, which includes the fuel required for eventual rocket braking outside the atmosphere, and the mass which is ablated for heat protection during the flight into the atmosphere. It is shown that when chemical or nuclear propulsion is considered, pure atmospheric braking is always the best solution, but when electrical propulsion can be used, an optimum compromise between partial rocket and atmospheric braking may exist, depending upon the respective qualities of the propulsion system and ablating material. (Author)

Descriptors :   (*SPACECRAFT, RECOVERY), (*SPACE PROPULSION, MATHEMATICAL ANALYSIS), OPTIMIZATION, ABLATION, HEAT SHIELDS, AERODYNAMIC HEATING, FUEL CONSUMPTION, ATMOSPHERES, REENTRY VEHICLES, SPACE FLIGHT, ELECTRIC PROPULSION, NUCLEAR PROPULSION, ROCKET PROPULSION, ROCKETS, BELGIUM

Distribution Statement : APPROVED FOR PUBLIC RELEASE