A METHOD FOR DETERMINING THE RESPONSE OF SPACE SHUTTLE TO ATMOSPHERIC TURBULENCE VOLUME Ⅰ SPACE SHUTTLE TURBULENCE RESPONSE

摘要

Preliminary turbulence response analyses of space shuttle were conducted for one ascent and one booster flyback subsonic flight condition. The ascent case considered both symmetric and antisymmetrlcal boundary conditions, while only the symmetric analysis was conducted for booster flyback. The three conditions were analyzed with SAS active and inactive, but apparent instabilities with SAS active (arising from improper gains) invalidated the results. Load and acceleration responses in all cases, however, were well within vehicle design limits.nIt is recommended that future response studies be preceded by stability checks to ensure that the elastic vehicle/SAS is stable and that the gains used in the response analysis are correct. It is also recommended that the study be expanded to include other subsonic and supersonic flight conditions.