This paper describes the application of distributed processing, fiber optics, and hardware redundancy to collecting airstream data in Princeton's digitally controlled Variable-Response Research Aircraft (VRA). Microprocessor-controlled instrumentation packages in each wingtip of the aircraft collect angle-of-attack and sideslip data in digital form; after scaling, filtering, and calibrating the data, they send it to the aircraft's microprocessor Digital Flight Control System (micro-DFCS) via digital fiber optic data links. Each wingtip's package is independent of the other; therefore, the system has dual hardware redundancy. The fiber optic link design is presented as well as a description of the calibration and communications software. Translation of the system's dual redundancy into fault tolerance is also covered. Results of preliminary flight tests are included.


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    Title :

    Distributed processing and fiber optic communications in air data measurement


    Contributors:

    Conference:

    NAECON 1982; National Aerospace an Electronics Conference ; 1982 ; Dayton, OH


    Publication date :

    1982-01-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




    Distributed Processing and Fiber-Optic Communications in Air Data Measurement

    Farry, Kristin A. / Stengel, Robert F. | IEEE | 1983



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