论文部分内容阅读
模拟冲压发动机工作状态的流动条件需要独特的地面试验能力、暂冲式吹风试车台是一个经济设备,它能满足高流量和高压力比的要求。污染空气加热器提供了一种灵活而廉价的模拟弹道温度变化的有效方法。自由射流试验中,适当地模拟进口流动条件对发动机研制起着很重要的作用。本文讨论了冲压发动机地面试验要求,评论了直联式与自由射流的试验中模拟可用参数的方法,描述了满足气动模拟要求的技术与设备,并已证实是有效的。
The flow conditions that simulate ramjet engine operating conditions require unique ground testing capabilities, and the bump blower test benches are an economical device that meets the high flow and high pressure ratio requirements. Contaminated air heaters provide a flexible and inexpensive way to simulate ballistic temperature variations. In free jet test, proper simulation of inlet flow conditions plays a very important role in engine development. This paper discusses the ground test requirements for ramjet engines, reviews methods for simulating available parameters in tests of direct and free-jet jets, and describes techniques and equipment to meet aerodynamic simulation requirements that have proven to be effective.