Analysis of Aero-engine Performance and Selection Based on Fuzzy Comprehensive Evaluation

Selecting an aero-engine which can effectively meet the design requirements of aircraft is the first step in the overall program design of aircraft. The common judgment is fuzzy. The current judgment studies of aero-engine performance often limited to a particular aspect and can't reflect the overall performance. So we can't accurately select and use. This paper aims to solve this problem. Taking two aero-engines as examples, the related parameters are quantified depending on the design requirements for the aircraft. A fuzzy comprehensive evaluation model is established based on fuzzy mathematical theory. Then according to the principle of maximum membership degree, the paper selects the most suitable engine. Meanwhile the applicability of the theory in the field of engineering is verified and provides guidance for other engineering fields. (C) 2016 The Authors. Published by Elsevier Ltd.