摘要
Abstract
Based on systems engineering theory,a systematic functional analysis method suitable for aircraft multi-scenario operating characteristics is constructed.First,entities,activities and key state parameters in the scene are clarified through context analysis;secondly,functions under the scene are identified based on three types of input and output streams of matter,energy,and information;finally,high-level functions are decomposed according to the transformation path of the streams,and derivative functions are defined based on physical constraints.In order to verify the effectiveness of the method,an aircraft ground deceleration scenario was taken as an example to carry out application analysis.The results show that this method can systematically identify core functions such as wheel brakes,spoilers,and engine thrust reversals,and capture functions that are easily ignored in traditional empirical analysis such as brake heat dissipation;at the same time,through strict flow and function correspondence,it significantly reduces the dependence of functional identification on subjective experience,improving the systematicness and logic of forward design of complex civil aircraft products.关键词
基于模型的系统工程/场景/功能分析/功能分解/飞机地面减速Key words
model-based systems engineering/scenario/functional analysis/functional decomposition/aircraft ground deceleration分类
航空航天
