基于飞行参数的某型飞机反螺旋特性分析

Analysis of converse spin characteristics about a certain aircraft based on flight parameters

关于某型飞机正飞螺旋特性的研究已经比较充分,但对其反螺旋的认识还十分缺乏。以该型飞机一起反螺旋飞行事故中记录的主要飞行参数为依据,通过计算反螺旋动态参数,分析了该型飞机的反螺旋特性。研究结果表明,该型飞机的反螺旋属于稳定的陡直振荡反螺旋。所提出的螺旋特性的推算方法为利用飞行参数研究和分析反螺旋特性提供了理论依据,对于准确判断及正确处置螺旋、保证飞行安全具有理论指导意义。

A certain aircraft＇s normal spin characteristics are fully understood by us,but the knowledge about the converse spin characteristics is quite less. In this paper,taking the flight parameters recorded by the flight data recorder during one converse spin accident as the basis,a method to extrapolate converse spin flight parameters was put forward using the spin dynamics basic theory and the converse spin characteristics were analyzed. The results show that the form of the aircraft＇s converse spin is a one with stable and steep oscillation. The parameters extrapolation method in this work provides theoretical basis to research the converse spin characteristics using the flight parameters data. In addition,the results are of directive significance for pilots to judge the converse spin exactly and then handle it correctly.