Gas compressors (air and other compressible fluids) have been used sporadically since the 1940's for various utility functions in aerospace applications. They have been used to provide power to gun purge and drive systems, engine or APU starters (recharge accumulators), reservoir pressurization, cockpit pressurization, braking systems, canopy seals, engine control divides, landing gear activation, and boosted flight controls (see Table 1). In current state-of-the-art aircraft, most pneumatic system power is extracted from a stage of compression in the turbo-jet engine. As more and more demands are put on new generation engines for fuel economy and performan
SAE AIR 4994A-2013由美国机动车工程师协会 US-SAE 发布于 2013-11-11。
SAE AIR 4994A-2013 在中国标准分类中归属于: V42 起飞着陆装置,在国际标准分类中归属于: 49.080 航空航天用流体系统和零部件,49.120 货运设备。
SAE AIR 4994A-2013 小型船舶.压缩空气.舱底.淡水及卫生系统自动控制装置的船内试验方法 由 SAE AIR 4994-1996 变更而来。
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