Accession Number : AD0276040

Title :   OSCILLATION ENVELOPE FOR A SPINNING RE-ENTRY VEHICLE

Corporate Author : SPACE SYSTEMS DIV LOS ANGELES AIR FORCE STATION CALIF

Personal Author(s) : ALBINI,F.A.

Report Date : 27 FEB 1962

Pagination or Media Count : 1

Abstract : The oscillation envelope for a spinning re-entry body is computed for large angles of oscillation by an approximate method, the validity of which rests upon near constant velocity and near straight-line flight. It is found that initial conditions of entry are of great importance in determining behavior at lower altitudes. Oscillatory solutions are discussed which are compatible with the steady-state non-zero angle solution. The only damping mechanism assumed is the heteroparametric (''q tightening'') resonant frequency shift characteristics of re-entry flight. A numerical example illustrates the results. A computer program is available which solves the equations derived herein, under the assumptions detailed in the discussion of the example. (Author)

Descriptors :   *REENTRY VEHICLES, *SATELLITE ATTITUDE, ATMOSPHERE ENTRY, BODIES OF REVOLUTION, EQUATIONS, FREQUENCY, MATHEMATICAL ANALYSIS, MOTION, OSCILLATION, SPINNING(MOTION), THEORY

Distribution Statement : APPROVED FOR PUBLIC RELEASE