The Orion crew vehicle relies on Honeywell’s Orion IMU derived from the highly successful Miniature Inertial Measurement Unit (MIMU) electronic design. The Orion IMU contains three single axis Honeywell Ring Laser Gyros that measure vehicle body attitude changes and three Honeywell QA3000 single axis accelerometers to measure changes in vehicle body velocities. This inertial data is used by the Vehicle Management Computer (VMC) for onboard navigation. The electronics on which the OIMU is based has serviced hundreds of successful missions from earth orbit, asteroid/comet rendezvous, Mars and Pluto explorations.
*Orion Inertial Measurement Unit (OIMU)