Method of fuzzy quality function deployment in aircraft top-level design

Aircraft design is a complex large-system engineering involved in interactions of multidisciplinary and multi-technology fields. Top-level/detail design technology of aircraft is an important matter of comprehensive technology adopted by the modern countries develops advanced aeronautical/astronautical vehicle systems and is the developing trend of future aircraft design. Based on traditional QFD (Quality function deployment) method, the fuzzy quality function deployment (FQFD) theory and the step-by-step hierarchy structure in aircraft top decision are studied. The fuzzy model for computing competitive factor in evaluation is presented. The greatest characteristic lies in the proposed hierarchical structure of house of quality for aircraft top-level design and applying the method of FQFD to aircraft top-level design. An example, in which the key technologies decision for improving the performance and a fixed-wing aircraft is studied proves the feasibility of the proposed method. The method has very strong applicability in aeronautical/astronautical vehicles as aircraft and spacecraft, etc.