【摘要】 本文对大型喷气飞机穿越严重风切变——微下冲气流提出了一种简单、近似的飞机安全穿越微下冲气流的性能指标,并基于能量守恒定律,推导出一种近似的计算飞机抗拒风切变能力的解析式。通过对波音-727飞机在起飞、着陆阶段的抗风切变能力的计算,表明该式之结果与通过时间历程进行动态计算所得的结果是一致的,从而为飞机风切变的告警以及抗风切变控制系统的设计提供了一个参考的准则。更多还原

【Abstract】 A simpiified performance index for aircraft safely penetrating through one kind of severe windshear--microburst is formulated in this paper. Based on this index, as well as the Energy Conservation Law, an analytical expression is developed to compute the windshear resistant capability of aircraft. Computations on Boeing-727 aircraft in take-off and landing phases respectively show that the resuits from the expression agree well with those drawn from dynamic response studies. Thereby, it sheds light on the design of severe windshear aierting system, and it also gives hints on the development of aircraft windshear resistant system.更多还原