Integration of a fiber optic gyro AHRS into a fly-by-light aircraft configuration

摘要

Abstract: A Litton LN-200 fiber optic gyro IMU is being adapted to provide flight control and AHRS data massages via a 1773A fiber optic interface to the FLASH demonstration system. Software modifications to generate the requisite output data from the LN-200 IMU incremental angle and velocity data are being developed for the VFCS program. To provide a rugged, reliable demonstration unit, the production LN-200 IMU is mounted in an adaptive housing along with the circuitry to convert the LN-200 RS-485 SDLC electrical interface to the FLASH 1773A fiber optic interface. A dc/dc converter is also incorporated to provide the additional voltages required for LN-200 and conversion circuitry operation.!5