结构紧凑的短 Ｓ形进气道是未来战斗机（包括无人战斗／攻击机）设计中要采用的一种设计形式。它的缺点是总压恢复低，气流不均匀度和紊流度大，从而会导致降低发动机（飞机）性能和发动机喘振边界。本文介绍了英、美国家改进这种短Ｓ形进气道总体性能的技术措施，可能对我国的新机研制有所帮助 The compact, short S-shaped inlet is a form of design to be used in the design of future fighters, including unmanned combat / attack aircraft. Its disadvantages are low total pressure recovery, large air flow inhomogeneities and turbulence, which can lead to reduced engine (aircraft) performance and engine surge margin. This article introduces the technical measures taken by the British and U.S. countries to improve the overall performance of such short S-shaped air intakes and may be helpful for the development of new aircraft in China