Failure detection and isolation of redundant inertial systems for Space ShuttleA failure detection and isolation technique is presented for application to 'off-the-shelf' type four-gimbaled inertial measurement units (IMUs) such as the KT-70 or Carousel IV. This study concentrates initially upon actual four-gimbaled IMU performance requirements for current Space Shuttle booster and orbiter mission phases. When this information is obtained for a simplex system, the remaining area of study necessary to attain redundant IMU capabilities is the establishment of mission-dependent performance failure detection thresholds. These thresholds, then, permit a careful evaluation of the capabilities of various 'off-the-shelf' four gimbaled IMUs to satisfy the Shuttle mission performance requirements with various failure detection and isolation methods.
Document ID
19740056742
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Brown, H. E. (NASA Marshall Space Flight Center Huntsville, Ala., United States)
Dove, R. W.
Mckern, R. A. (Charles Stark Draper Laboratory, Inc. Cambridge, Mass., United States)