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采取两侧或腹部进气布局的战斗机的发动机置于机体内(尤其是单发战斗机)时,其进气道大多呈S弯走向,称作S弯进气道。旋流是70年代在第三代战斗机的S弯超音速常规进气道内发现的一种三维涡旋流动现象。旋流扰动对所有现代军用发动机
When the engines of fighter planes with air intake on both sides or abdomen are placed in the body (especially the single fighter), the air intake of the fighter is mostly S-shaped and is called the S-bend inlet. Swirling is a three-dimensional vortex flow phenomenon found in the S-bend supersonic conventional inlets of the third generation fighter in the 1970s. Swirl disturbance on all modern military engines