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美国政府科技报告
>DYNAMIC TEST OF A COMMERCIAL-TYPE PASSENGER SEAT INSTALLATION IN AN H-21 HELICOPTER One of a Series of Reports Pertaining to the Dynamic Crash Test of a U. S. Army H-21 Helicopter
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DYNAMIC TEST OF A COMMERCIAL-TYPE PASSENGER SEAT INSTALLATION IN AN H-21 HELICOPTER One of a Series of Reports Pertaining to the Dynamic Crash Test of a U. S. Army H-21 Helicopter
This report presents an analysis of the crashworthiness character is tics of a commercial helicopter passenger seat as installed in a helicopter which was subjected to a full-scale dynamic crash test.nOn 12 September 1962, Aviation Crash Injury Research conducted a dynamic crash test of an H-21 helicopter under contract to the U. S. Army Transportation Research Command. Included among several personnel restraint systems tested in this experiment was a proto type passenger seat built for a commercial helicopter. The two passenger forward-facing seat was occupied on the aisle side by an anthropomorphic dummy and on the wall side by sandbags designed to simulate a second passenger.nThe dummy was instrumented by accelerometers installed in the pelvic area. These accelerometers were arranged to permit record-ing of the impact decelerations in the longitudinal, lateral, and vertical directions. A tensiometer in the dummy's seat belt recorded seat belt force. A high-speed camera recorded the action of the seat and occupant during the entire crash sequence.nThe seat maintained its structural integrity to the extent that a properly belted occupant would have been retained both in the seat and in the original location in the cabin. However large displacements of the arms, legs, and torso of the dummy occurred with respect to the seat, implying severe buffeting of the occupant. The accelerations recorded in the dummy (25-30G lateral and longitudinal and 35-40G vertical) probably would have been survivable with moderate injury when sustained under conditions of optimum support, a condition not met in this test.
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