A Study on the Application of the Grey-Fuzzy Cluster Theory in Scheme Selection of Aircraft

Applying the gray system theory to the scheme evaluation of aircraft design, the paper studies a gray-fuzzy cluster decision theory which consists of the evaluation index system and considers the weights of Evaluation indexes and gray correlation analysis for scheme selection of aircraft; The decision theory associates the evaluation index by the weights of various indexes and achieves the scheme selection through implementing gray-fuzzy cluster based on gray correlation degree between evaluation scheme and ideal scheme; Finally, the paper validates the feasibility of the method with an example of V/STOL airplane.