CONTROL OF A REMOTE MANEUVERING UNIT DURING SATELLITE INSPECTION
AIR FORCE AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OH
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Operator performance in flying a simulated remote maneuvering unit RMU on a coplanar satellite inspection mission was evaluated under two conditions of RMU attitude control and two conditions of cockpit instrumentation. The maneuver was repeatedly performed successfully using either an on-off acceleration-command attitude control system or an on-off rate-command attitude control system, each with either a full panel of cockpit instruments six or only one cockpit instrument. The rate-command system was found to be superior for pitch control during station keeping and for roll control in general. The acceleration-command system was superior for pitch control during the trajectory portions of the mission. Because both control systems had disadvantages, consideration of a variable rate-control system is recommended. More economical and precise RMU control was obtained under the full-panel cockpit instrumentation condition irrespective of the control system used. The instruments of most value were found to be those which provided X longitudinal and Z vertical distance information. The limitations of the simulation and the advantages and disadvantages of an inside-out versus an outside-in television display of the target and its surrounds are also discussed.
- Unmanned Spacecraft