Surge margin monitoring of one turboshaft engine with inlet distortion

Abstract In order to explore the engine surge when inlet distortion index and margin, relationship between parameter characteristics of research surge, strengthen safety monitoring assessment engine, this paper designed a kind certain type bench test system, unstable flow field vortex axis working parameters for analysis. paper, plug-plate generator is used induce circumferential static pressure changes outlet axial compressor centrifugal under different conditions are obtained. The unevenness mean turbulence, ratio at point converted air rate analyzed with increase height conditions. results show that increases margin decreases same rotating speed. When similar, higher speed is, greater smaller is.