No abstract

The two automatic control modes of the Astronaut Maneuvering Research Vehicle (AMRV) are analyzed: the Control Moment Gyro (CMG) and the Rate Gyro (RG). The AMRV is an autonomous maneuvering unit which translates and rotates the pilot by means of hand-controller input commands. The CMG normal operation, desaturation, and cage/lock dynamics are described in terms of a typical AMRV mass property configuration. No propellant is used for normal operation in the CMG mode, and the maximum rotation rate is 5°/sec about each AMRV axis. The.RG attitude maneuvering and limit cycle submode dynamics are described in terms of the same AMRV mass property configuration. In the RG mode, attitude and attitude rate are maintained within limits of ±4° and ±2°/sec, respectively; the maximum rotation rate is 20°/sec about each AMRV axis. Translational maneuvering is identical in either mode, with linear velocities normally not exceeding 0.5 fps.

No abstract

No abstract

No abstract