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Evaluation of Improved Restraint Systems for Sport Parachutists
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1998-03-01
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[PDF-1.37 MB]
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Edition:Final Report
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Abstract:As part of a cooperative project between the Federal Aviation Administration's Civil Aerospace Medical Institute, the Parachute Industries Association, and the United States Parachute Association, a series of dynamic impact sled tests were performed to evaluate new types of restraint systems for sport parachutists. The traditional means of restraining sport parachutists sitting aft-facing on the floor has been to provide lap belts that are attached to the floor or sidewall of the airplane. The restraint systems evaluated in this project were designed to route through the parachute harness and attach to the floor. Thus, occupant restraint was provided by anchoring the parachute harness to the floor by means of the new restraint devices. Seven methods of attaching the restraints to the parachute harness, which included both single and dual point restraint systems, were dynamically tested. Five models of parachute pack/harnesses were included in this project. A VIP 50th percentile anthropomorphic test dummy was modified to simulate a floor-seated aft-facing parachutist. The impact test severity ranged from 5.5 gs @ 27.8 ft/sec to 9.5 gs @ 32.7 ft/sec. Based on the results and observations acquired from this series of 12, three of the new restraint methods demonstrated better restraint performance than could be expected from that provided by the traditional lap belt method currently recommended.
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