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提出一种利用差异检验对QAR超限事件与飞行记录数据进行分析的方法,以从海量的QAR飞行数据中提取出带有指导意义的信息。首先研究了将KW检验应用于QAR超限事件分析的可行性;然后针对某超限事件进行典型参数选择,并对发生与未发生该超限事件进行分组,对所选择的航班采样数据进行KW检验,根据检验结果判断某飞行阶段中被选择的典型参数是否存在显著差异。最后对于存在显著差异的参数,分析其参数特征,通过理论与经验对其进行解释,研究其对于超限事件的影响。通过对爬升速度大(35-1000 ft),下降率大(2000-1000 ft)及接地点远三项超限事件进行举例分析,可以看出KW检验能够分析飞行参数的分布差异,进而为事件分析提供经验性的判读依据,并为飞行安全管理工作提供指导。
A method to analyze the QAR overrun event and flight record data by using the difference test is proposed to extract the instructive information from the massive QAR flight data. Firstly, the feasibility of applying KW test to the analysis of QAR overrun event was studied. Then the typical parameters of a certain overrun event were selected, and the event of overrun event was grouped. The selected flight sampling data was subjected to KW Test, according to the test results to determine whether there is a significant difference in the selected typical parameters during a flight phase. Finally, for the parameters that have significant difference, the parameter characteristics are analyzed, and their effects on the overrun event are studied through the theory and experience. An example analysis of the three overrun events with large climb speed (35-1000 ft), large descent rate (2000-1000 ft) and ground point shows that the KW test can analyze the distribution differences of flight parameters, The analysis provides an empirical basis for interpretation and provides guidance on flight safety management.