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衡量喷气发动机试车台性能优劣的主要标准是能否提供有关发动机参数测量的有复验性的结果。基于此标准,美国海军试车台当属世界上最好的空气冷却的涡喷发动机试车台。但为了获得这样好的性能,就得付出相对昂贵的费用。为此研究人员摒弃了圆形或非圆形结构的增压管,取而代之的是方形或矩形的增压管,从而使其工程费用和维护费用可节省30%。本文介绍了基于美国海军的标准喷气发动机试车台的数学模型,对圆形、方形和矩形三种增压管作了定量分析和比较,结果表明,方形和矩形结构都是可选方案。
The main criterion for measuring the pros and cons of jet engine test stands is the availability of retest results for engine parameter measurements. Based on this standard, the US Navy Test Drive is the best air-cooled turbojet test bed in the world. But in order to get such good performance, you have to pay a relatively expensive cost. As a result, researchers abandoned booster tubes, both circular and non-circular, instead of square or rectangular booster tubes, saving 30% on their engineering and maintenance costs. This paper presents a mathematical model of a standard jet engine test bed based on the U.S. Navy, and quantitatively analyzes and compares three types of pressurized tubes, round, square and rectangular. The results show that square and rectangular structures are optional.