Aero-engine reliability distribution method based on prototype engineering data

The invention discloses an aero-engine reliability distribution method based on prototype engineering data, and the method comprises the following steps: determining analysis objects which are a plurality of unit bodies and systems forming an aero-engine complete machine; the reliability distribution proportion delta i of analysis objects in the whole aero-engine is obtained, the total number of the analysis objects is s, and i is a natural number smaller than or equal to s; carrying out reliability distribution of the analysis object by combining a distribution index of the whole aero-engine; wherein the reliability distribution proportion delta i of the analysis object in the whole aero-engine can be obtained by calculating the proportion of the fuzzy criticality of the analysis object in the fuzzy criticality of the whole aero-engine. According to the technical scheme, the effectiveness of reliability allocation can be improved, the subjective degree of artificial scoring assignment is reduced, the allocat