航空发动机高空模拟试验正交设计研究

Orthogonal design of aero-engine altitude simulation test

通过分析现有试验设计方法存在的不足和正交试验设计方法的优势,提出采用正交试验设计方法进行航空发动机高空模拟试验设计的思路。对高空模拟试验的项目、指标、因素和水平进行分析,根据不同的试验项目和指标确定试验设计的因素及水平;再选择适合的正交表并进行表头设计,将试验因素和水平按照一定的原则填入正交表后获得正交试验方案;最后以航空发动机高空稳态性能试验为对象进行正交试验设计,获得的试验方案在高空台效率提升等方面具有一定的指导意义。

By analyzing the shortcomings of the current test design method and the advantages of the orthog-onal test design method,the idea of performing an aero-engine altitude simulation test design by the orthog-onal test design method was proposed.The test items,indicators,factors and levels of the altitude simula-tion test were analyzed to determine the factors and levels of the test design according to different test items and indicators,then the appropriate orthogonal tables were selected to design the header,and the test fac-tors and levels according to certain principles were filled in the orthogonal table.Orthogonal test program was obtained.Finally,the orthogonal test design of the altitude steady-state performance test for a certain type of engine was performed.The obtained test scheme has certain guiding significance in efficiency im-provement of the altitude test facility.