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PRELIMINARY DESIGN
OF A LIMB RESTRAINT EVALUATOR (U)
| 题名： | PRELIMINARY DESIGN OF A LIMB RESTRAINT EVALUATOR (U) |
| 作者： | Richard P. White. Jr.. Thomas W. Gustin. and Michael C. Tyler |
| 关键词： | Escape Systems/ Restraint Systems. Anthropomorphic Dimmies, Test Manikins. Test Instrumentation Ejection Injuries* |
| 摘要： | Limb restraint devices are needed to prevent limb flail injuries during emergency ejection from aircraft at the higher dynamic pressures. Various active limb restraint devices are now being investigated and developed. While human subjects can be used to conduct many of the human factors evaluations of the proposed restraint systems, there is no means of evaluating the effectiveness of the proposed restraint systems during rocket sled or inflight ejection tests. This report summarizes the results of mechanical and instrumentation design studies conducted to formulate the preliminary design of a system to measure the effectiveness of various limb restraint systems during wind tunnel, rocket sled, or laboratory tests. The system is to be integrated into an anthropometric test dummy designated the Limb Restraint Evaluator (LRE) Mechanical design considerations include anthropometry, joint articulation, structural strength, the usability of available commercial components, and sensor selection and placement. The instrumentation will have a total capability of 96 channels of data, including 52 LRE parameters involving limb joint rotation, knee joint loads, forces and moments developed at the neck and forearm, and torso accelerations. The system will also be capable of recording data from up to 26 transducers mounted on the ejection seat. The test data can either be stored on-board the system or telemetered to ground stations. The major conclusion is that a successful limb restraint evaluator can be designed and constructed, using current state-of-the-art techniques and many existing components from anthropomorphic dummies, to survive the extreme environmental conditions to which it will be exposed, and to accurately evaluate the effectiveness of various limb restraint devices in preventing limb flailing during aircraft ejections. |
| 报告类型： | 科技报告 |
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