Aircraft system quantitative similarity analysis method and device and medium

The invention discloses an aircraft system quantitative similarity analysis method, an aircraft system quantitative similarity analysis device and a medium. The method is used as a basis for similarity design which can be modified and improved on the basis of systems of existing mature similar aircrafts, new aircraft technical manuals and the like in making of novel aircrafts, new aircraft technical manuals and the like. And all systems of similar aircrafts are subjected to importance analysis and similarity correlation calculation to obtain quantitative similarity, so that the development risk of the novel aircraft is effectively controlled, and the development period and cost are reduced. Calculating the structure importance degree, the probability importance degree and the key importance degree of the aircraft system, calculating the cosine similarity of the probability and key importance degree data matrix, and finally obtaining the similarity value of the two aircraft type systems. 本发明公开了一种航空器系统定量相似性分析方法