Abstract:

For civil aircraft dispatch reliability design and assessment methods,the dispatch reliability model's construction is based on multi-level fuzzy comprehensive evaluation method. Initially through experts'research we determine the factors affecting civil aircraft dispatch reliability of the secondary index system and classify them according to their importance. Then using the AHP method we calculate the weight of the influencing factors,and their membership function by using generalized trapezoidal fuzzy number,and through the fuzzy interpolative method we can identify the fuzzy relationship matrix,then a mathematical
model can be established to achieve the fuzzy comprehensive evaluation of civil aircraft dispatch reliability.Finally when compared with airlines爷B737 fleet dispatch reliability level verification results,we can conclude that the evaluation model and its evaluation results are basically consistent with the actual situation.

Key words: civil aircraft dispatch reliability, fuzzy comprehensive evaluation, AHP, generalized trapezoidal fuzzy number, membership function