OPTIMUM ANGULAR ACCELERATIONS FOR CONTROL OF A REMOTE MANEUVERING UNIT.
Final rept., Jun-Aug 65.
AEROSPACE MEDICAL RESEARCH LABS WRIGHT-PATTERSON AFB OHIO
Pagination or Media Count:
Six subjects successfully reorinted the attitude of a simulated remote maneuvering unit RMU using an on-off acceleration command control system. RMU attitude was determined solely by viewing the space scene being televised by the RMU. That scene consisted of a spherical target, the earth horizon, and a star background, all of which interacted realistically as a function of the subjects RMU control inputs. The RMU was controlled under three conditions of angular acceleration 4, 8, and 12 degreessec sq. Four degsec sq. resulted in least expenditure of fuel and most accurate rate control without a sacrifice in time. These results and subjects preference data recommended pitch, yaw, and roll accelerations of 4 degsec sq. when using an on-off acceleration command control system. Subjects relied primarily on the orientation of the earth horizon for RMU roll reference. Because the horizon was not always in view, errors in roll were significantly greater than those in pitch and yaw. This result may have been an artifact of the simulation too few stars were simulated to allow their use as an adequate roll reference. Simultaneous or separate attitude control resulted in equally effective RMU reorientation. Similarly, pilots and nonpilots performed equally well. However, pilots can usually be trained faster than nonpilots. Author
- Unmanned Spacecraft