The problem was to determine if the FDL-8 manned re-entry vehicle lateral-directional modes have clearly adequate pilot handling qualities in subsonic flight. If not, a SAS was to be designed. Lateral characteristics for 21 subsonic flight conditions were obtained from linearized aircraft lateral equations. Assumptions were that symmetrical reference flight conditions and small-perturbation theory apply. The characteristics compared with requirements for highest level handling qualities showed a SAS was required. A two-loop SAS was designed using Root-Locus techniques. The yaw damper loops included undesirable Roll-Spiral coupling but the roll damper, second loop suppressed the Roll-Spiral coupling. (Author)
Analysis of the FDL-8 Lifting Body Lateral-Directional Modes and Preliminary Design of a Stability Augmentation System for Subsonic Flight
1971
149 pages
Report
Keine Angabe
Englisch
Manned Spacecraft , Spacecraft Trajectories & Flight Mechanics , Flight control systems , Lifting reentry vehicles , Subsonic characteristics , Rendezvous spacecraft , Angle of attack , Flight paths , Roll , Aerodynamic control surfaces , Mathematical models , Theses , SAS(Stability Augmentation Systems) , Stability augmentation systems , FDL-8 reentry vehicles , Space shuttles , Computerized simulation
Stability Augmentation Design of a Large Subsonic Transport
British Library Conference Proceedings | 1994
|