大飞机空速异常辅助决策功能空速构建方法研究

Research on the Construction Method of Airspeed of the Auxiliary Decision Function of the Large Aircraft Abnormal Airspeed

空速是非常重要的飞行参数,大飞机空速异常可能引起严重的飞行事故,并且难以通过地面检查完全排除空速异常故障。针对空速异常发生频率高、故障类型多、对飞行安全影响大,且空速异常发生后飞行员处置负担重等问题,设计一种大飞机空速异常辅助决策功能。在不同飞行阶段和飞机性能下,设计余度表决判断算法、飞行状态符合性判断算法、基于风速的空速重构算法和基于升力方程的空速重构算法;并以大运飞机为例,进行仿真验证。结果表明:本文设计的算法有效。

Airspeed is a very important flight parameter.The abnormal airspeed of large aircraft may cause serious flight accidents,and it is difficult to completely eliminate the abnormal airspeed fault through ground inspection.Aiming at the problems such as high frequency of airspeed anomalies,multiple fault types,great impact on flight safety,and heavy burden of pilots’disposal after airspeed anomalies,an auxiliary decision-making function for airspeed anomalies of large aircraft is designed in this paper.Under different flight phases and aircraft performance,the residual voting judgment,flight status conformity judgment,airspeed reconstruction algorithm based on wind speed and airspeed reconstruction algorithm based on lift equation are respectively studied and designed.Taking the DaYun large aircraft as an example,the simulation results show that the method is effective.