The report describes the feasibility of using a fixed-wing aircraft, employing free-fall and circling-line techniques, to rescue personnel or retrieve equipment from the ground. The technique involves deploying a line from the aircraft while a controlled turn is maintained, causing the line to describe a diminishing spiral earthward. As a continuation of the efforts described in AMRL-TR-69-140, this report describes measurements of launch g forces and of line tensions in recovering 185 to 231-pound dumies. For 7 launches, the mean total g was 01.7 plus or minus .19 g/sec. Line tension at the aircraft was 360-645 pounds at launch and from 245-410 pounds when the dummy was in trail behind the aircraft. Results suggest that this method of retrieval is feasible for human subjects or equipment with regard to stability and g load at launch. (Author)


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    Title :

    Long-Line Loiter Personnel Retrieval System: Triaxial Acceleration Tests


    Contributors:
    E. A. Behling (author) / R. B. Pilmer (author) / E. J. Jumper (author)

    Publication date :

    1972


    Size :

    52 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





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