基于飞参数据的飞机尾旋惯性力矩分析

决定飞机尾旋动态的力矩包括惯性力矩和气动力矩,破解尾旋的特性需要获取准确的惯性力矩。利用飞参中的三轴角速度,选取训练实例飞机失速性滚摆到进人反平尾旋状态过程飞参数据,计算复杂失速尾旋状态的三轴惯性力矩,说明惯性力矩的变化过程,分析对比惯性力矩在尾旋各阶段的作用特点,并结合飞机的大迎角气动特点,提出失速后预防进入尾旋的操控要点。算法准确实用,动态分析及操控要点提示对保障飞行安全具有借鉴意义。

Analysis on Inertial Moment of Spinning Aircraft Basedon Data from Flight Parameter Recorder

The dynamic characteristics of spin were determined by inertial moment and aerodynamicmoment on aircraft , and precise inertial moment was necessary for analyzing spin characteristics. Inthe article , a flight training case was selected,in which the aircraft fell in stall and rolling pendulumat first, then evolved to reserve horizontal spin. Flight data such as angular velocities of three-axisfrom flight parameter recorder in the case was utilized to calculate inertial moments on the aircraft incomplex spin state. With the calculation results , the dynamic procedure and affection of inertial moment in different phase of spin were analyzed. At last, according to aerodynamic characteristics ofaircraft with high angle of attack ,the flight operation cruses after stalled state was advanced to avoidspin. Methods advanced in the article were accurate and practical. Dynamic analysis and operationcruses were worthy of reference for guaranteeing flight safety.