A rotorcraft guidance and control system designed for real-time detection and avoidance of terrain and obstacles has been developed and evaluated in a moving-base simulation. The system, referred to as pilot-directed guidance (PDG), relies upon forward-looking sensor information along with digital terrain elevation data to perform automated terrain-following and lateral and vertical obstacle avoidance maneuvering in the presence of flight path obstructions. An important aspect of this system is that it does not restrict the pilot to a predefined nominal course but instead allows for complete flight-path autonomy with no prior surveying of the obstacle environment. The pilot interface has been designed to enable the obstacle-avoidance sub-system to be transparent to the pilot except when performing emergency obstacle avoidance. Back-driven cockpit controls provide cueing to the pilot and also facilitate pilot-override of automated maneuvers when necessary, such as in the event of a sensor failure. The pilot interface also includes HMD symbology to provide the pilot with navigation and system performance information. This paper describes the fundamental components of the PDG system; the forward-looking sensor, data processing and fusion, guidance algorithms, controller design, and pilot interface. Important results from a piloted simulation are then presented that describe the overall performance and workload reduction potential of the PDG system.


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    Titel :

    Sensor-based automated obstacle-avoidance system for nap-of-the-earth rotorcraft missions


    Beteiligte:

    Kongress:

    Head-Mounted Displays ; 1996 ; Orlando,FL,United States


    Erschienen in:

    Erscheinungsdatum :

    07.06.1996





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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