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原文传递 Vertical Drop Testing and Analysis of the WASP Helicopter Skid Gear.

题名：	Vertical Drop Testing and Analysis of the WASP Helicopter Skid Gear.
作者：	fuchs, y. t. jackson, k. e.
关键词：	aircraft parts, aircraft accidents, landing simulation, finite element method, crash injuries, risk assessment, impact velocity, computer programs, aluminum, aircraft construction materials, structural failure
摘要：	Human occupant modeling and injury risk assessment have been identified as areas of research for improved prediction of rotorcraft crashworthiness within the NASA Aeronautics Program's Subsonic Rotary Wing Project. As part of this effort, an experimental program was conducted to assess the impact performance of a skid gear for use on the WASP kit-built helicopter, which is marketed by HeloWerks, Inc. of Hampton, Virginia. Test data from a drop test at an impact velocity of 8.4 feet-per-second were used to assess a finite element model of the skid gear test article. This assessment included human occupant analytic models developed for execution in LS-DYNA. The test article consisted of an aluminum skid gear mounted beneath a steel plate. A seating platform was attached to the upper surface of the steel plate, and two 95th percentile Hybrid III male Aerospace Anthropomorphic Test Devices (ATDs) were seated on the platform and secured using a four-point restraint system. The goal of the test-analysis correlation is to further the understanding of LS-DYNA ATD occupant models and responses in the vertical (or spinal) direction. By correlating human occupant experimental test data for a purely vertical impact with the LS-DYNA occupant responses, improved confidence in the use of these tools and better understanding of the limitations of the automotive-based occupant models for aerospace application can begin to be developed. / Supplementary Notes: Text in English. Color illustrations reproduced in Black and White. Presented at American Helicopter Society 64th Annual Forum, Montreal, Canada, 29 Apr. - 1 May 2008. Publicly available Unlimited. CASI. / Availability Note: Product reproduced from digital image. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
总页数：	u0819/s4705；13p
报告类型：	科技报告