空气动力学学报2024，Vol.42Issue(1)：26-32,7.DOI:10.7638/kqdlxxb-2023.0043
测耙数量对进气道稳态畸变特性测量的影响
Influence of rake number on steady-state distortion characteristics measurement of intake tract
摘要
Abstract
In relevant tests of modern fighter intake tracts,due to complex factors such as low-speed auxiliary inlet opening,stealth of large S-bend pipes,and high angles of attack sideslip flight attitude,flow field distortion in the intake tract is large,and the test results from different numbers of rakes differ greatly.There are many studies on the measurement and calculation of steady-state distortion of outlet flow in the intake tract at home and abroad,but few comprehensive comparative studies have been conducted for the influence of the rake number on the measurement of steady-state distortion in the intake tract.In this study,by measuring the large pressure gradient region,low pressure region and steady-state distortion in the intake tract,a comparative study is conducted on the commonly used forms of 6 and 8 rakes in the intake wind tunnel test,full-scale advance joint bench test,and advance matching flight test.The research results show that,for complex shaped fighter inlet,the measurement of outlet flow field of the intake tract requires as many as 8 measuring rakes to achieve satisfactory results.Particularly,in the shipboard environment,flow in the intake tract is more complex due to factors such as bow inflow and deflector reflection,and the engine requires more stringent requirements for the stability of the advance matching as operated in a special reheating state;thus,it is more necessary to adopt the measurement with 8 rakes under this circumstance.关键词
进气道/进发匹配/试飞测试/风洞试验/畸变/测耙/进发相容性Key words
intake tract/advance matching/flight test/wind tunnel test/distortion/measuring rake/advance compatibility分类
航空航天引用本文复制引用
王霄,沈天荣,潘英,郭佳男,任智博..测耙数量对进气道稳态畸变特性测量的影响[J].空气动力学学报,2024,42(1):26-32,7.基金项目
国家科技重大专项(J2019-V-0017-0112) （J2019-V-0017-0112）
