A fixed-base simulator investigation has been made of stability and control problems during piloted reentry from lunar missions. Reentries were made within constraints of acceleration and skipping, in which the pilot was given simulated navigation tasks of altitude and heading angle commands. Vehicles considered included a blunt-face, high-drag capsule, and a low-drag lifting cone, each of which had a trim lift-drag ratio of 0.5. With the provision of three-axis automatic damping, both vehicles were easily controlled through reentry after a brief pilot-training period. With all dampers out, safe reentries could be made and both vehicles were rated satisfactory for emergency operation. In damper-failure conditions resulting in inadequate Dutch roll damping, the lifting-cone vehicle exhibited control problems due to excessive dihedral effect and oscillatory acceleration effects.
Dynamic Stability and Control Problems of Piloted Reentry from Lunar Missions
1961
22 pages
Report
Keine Angabe
Englisch
Spacecraft Trajectories & Flight Mechanics , Aerodynamics , Manned reentry , Aerodynamic stability , Altitude simulation , Lateral stability , Dynamic stability , Lifting reentry vehicles , Lunar exploration , Aerodynamic heating , Descent trajectories , Flight paths , Simulators , Lift drag ratio , Aerodynamic drag , Roll
Dynamic stability and control problems of piloted reentry from lunar missions
Engineering Index Backfile | 1961
|Engineering Index Backfile | 1961
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