IUS-1 - Redundant inertial measurement unit test plan and results
Abstract
The Redundant Inertial Measurement Unit (RIMU) of the Inertial Upper Stage (IUS) rocket of the Shuttle has been tested according to a plan developed jointly by NASA and the USAF. The tests were carried out at the Eastern Launch Site (ELS) 16 hours before launch and consisted of five on pad calibrations and alignments (cal/aligns). RIMU gyrocompass alignments were compared to a reference optical alignment, and trend data were calculated. Comparison of the trend data showed that the difference between the RIMU cal/aligns and the reference alignments was within the maximum allowable range of error of + or - 325 arcsec. The location of the RIMU in the IUS avionics bay is shown in a diagram.
- Publication:
-
Aerospace Applications Conference
- Pub Date:
- 1984
- Bibcode:
- 1984aeap.conf...59M
- Keywords:
-
- Alignment;
- Calibrating;
- Inertial Upper Stage;
- Spacecraft Electronic Equipment;
- Spacecraft Instruments;
- Avionics;
- Gyrocompasses;
- Orbital Launching;
- Redundant Components;
- Spacecraft Instrumentation