The Mirach 100 air-vehicle is a multipurpose RPV-UMA, suited to intelligence missions of target recognition, acquisition, and identification up to 150 km. It is a high-subsonic speed, jet-powered drone having a ceiling altitude of 9000 m and 1 hour endurance. Different arrangements of the base air-vehicle allow higher altitudes or wider endurances according to the mission operational requirements. The flight control system of the Mirach 100 is mainly a compound of already tested in flight components. Autopilot function includes a full control system of stabilization on two axes, simply designed to improve reliability and safety of guidance. Mechanization is based on a simple analogic control circuit of the actuators that drive the control surfaces of the aircraft, stabilized through the vertical gyroscope feed-back; the gyroscope is installed in the air-vehicle fore structure. Guidance function includes a complete control system based on altitude, heading and velocity integrated in the flight controller which runs the whole aircraft, pay load included. Navigation function is based on a OMEGA/VLF receiver and navigator, suited to memorize a flight plan formed with up to 99 geographical points sequentially navigated, starting from any of it. From the computation a wind parameter is estimated which includes the on-board sensor errors, giving improved navigation performances even when the omega-receiver operates in marginal conditions. The drone is guided to follow the programmed flight plan. Complete avionics and aircraft itself were modeled on a computer for dynamic and static stability analysis and performance computations; the results obtained were compared with those recorded during the Mirach 100 test flights performed at the experimental range Salto di Quirra in Sardinia. Test flights gave excellent results about steering, guidance and navigation. The altitude and speed control were obtained with an accuracy that went far beyond the expectations, reaching the accuracy level of the sensor used in the testing program.


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    Title :

    Mirach 100 Flight Control System


    Contributors:
    A. Sbuelz (author)

    Publication date :

    1989


    Size :

    17 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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