The Boeing company conducted a flight test of a SATCOM system similar to the ARINC 741 configuration on a production model 747-400. A flight plan was specifically designed to test the system over a wide variety of satellite elevations and aircraft attitudes as well as over land and sea. Interface bit errors, signal quality and aircraft position and navigational inputs were all recorded as a function of time. Special aircraft maneuvers were performed to demonstrate the potential for shadowing by aircraft structures. Both a compass rose test and the flight test indicated that shadowing from the tail is insignificant for the 747-400. However, satellite elevation angles below the aircraft horizon during banking maneuvers were shown to have a significant deleterious effect on SATCOM communications.


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    Title :

    Flight Test of Arinc 741 Configuration Low Gain SATCOM System on Boeing 747-400 Aircraft


    Contributors:

    Publication date :

    1990


    Size :

    6 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





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