Study on Risk Assessment of Flight Test of Transport Aircraft Based on IAHP-SPA Model

In order to ensure the safety of flight test of transport aircraft and reduce the potential risks of flight test, risk assessment research of flight test of transport aircraft based on the IAHP-SPA model is proposed. Firstly, according to the risk factors that need to be considered in risk assessment under the condition of flight test, a semi-qualitative and semi-quantitative IAHP method is adopted to construct the flight test risk factor model of transport aircraft which can obtain the weight of each factor. Then, SPA method is used to carry out set pair analysis on the weight of flight test risk factors, and the level of flight test risk is given. Finally, based on IAHP-SPA model, an example of loss of control item caused by nose pitching down, severe buffeting in flight test of transport aircraft is analyzed. The result shows that the proposed method can effectively determine the risk level of the risk items in flight test, and can provide a basis for risk managers to make risk decisions in flight tests.