本文对上肢在高速气流吹袭下的致伤机理进行了分析,提供了计算稳态弹射时上肢防护约束力的约束方程组。根据这一约束方程组,我们计算了在握扶手和拉中央环两种弹射姿态下,上肢的最小约束力。计算结果表明,上肢的最小约束力的施加部位在临近肘关节和腕关节的上方不远处。文章最后讨论了对上肢防护装置的要求,以及上肢挡臂板的设计和最佳弹射姿态问题。 In this paper, the injury mechanism of upper extremity under high-speed airflow was analyzed, and the constrained equations for calculating the upper limb restraint restraint during steady-state ejection were provided. According to this constrained equations, we calculated the minimum binding force of the upper limbs in the two catapults of handrail and central ring. The results show that the minimum binding force of upper limbs is not far above the elbows and wrists. Finally, the article discusses the requirements of the upper limb guards, as well as the design of the arm shield and the best ejection attitude.