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A study on the crashworthiness design and analysis for military helicopter

机译：军用直升机防撞性设计与分析研究

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摘要

Crashworthiness model for Korean Utility Helicopter was built by employing KRASH, a kinetic analysis program, and the characteristics and performance of crashworthiness were assessed by the analysis. As a result of the analysis considering crashworthiness impact velocity of military standard, the vertical impact velocity became 0 after 0.124 second and the predicted values for the maximum acceleration of the engine and power transmission gear were 33G and 27G respectively. Cabin space height before and after the crash were 1.59 m and 1.40 m respectively; it led to 12% reduction in survival space but managed to fulfill the engineering requirement of “below 15%.” The predicted maximum displacement of crew and passenger seats were 126 mm and 188 mm respectively, fulfilling each of the acceptable standard. In addition, according to the results evaluated by Eiband Curve, passenger acceleration level was found out to be insufficient to cause a severe damage to passengers.
机译：利用动力学分析程序KRASH建立了韩国通用直升机的耐撞性模型，并通过分析评估了耐撞性的特性和性能。作为考虑了军用标准的耐撞性撞击速度的分析的结果，垂直撞击速度在0.124秒后变为0，并且发动机和动力传递齿轮的最大加速度的预测值分别为33G和27G。坠机前后的机舱空间高度分别为1.59 m和1.40 m；导致生存空间减少了12％，但设法满足了“低于15％”的工程要求。满足每个可接受标准的机组人员和乘客座位的最大预计排量分别为126 mm和188 mm。此外，根据依班德曲线评估的结果，发现乘客的加速度水平不足以严重伤害乘客。

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