| 摘要: |
| 根据理论分析,更主要的是根据实验结果,证明了某S弯常规超音速腹部进气道对侧滑敏感,并产生整涡旋流,它取决于进口没有导向叶片发动机对旋流扰动的敏感程度。发动机,性能下降,发动机喘振和强迫叶片振动之类严重的进气道与发动机匹配问题可能出现。 对用动态总压畸变作为主要相容性参数提出了疑问,认为旋流是进气道与失速裕度较大发动机匹配的决定性的相容性参数。 新发现一种不测量旋流也可以快速地判断进气道出口是否存在有整涡旋流的方法。 |
| 关键词: 过气道 旋涡 研究 |
| DOI： |
| 分类号: |
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| AN INVESTIGATION OF THE SWIRL IN AN S-SHAPED INLET |
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Yang Guocai,Zheng Sui
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Engineering Developing Center of Chengdu Aircraft Industrial Company
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| Abstract: |
| Based on theoretical considerations and primarily on experiment result, it is shown that the performance of a normal supersonic S-shaped belly inlet is sensitive to sideslip and that bulk swirl may occur.Depending on the sensitivity of the engine to swirl disturbances in the absence of inlet guide vanes,the engire performance may deteriorate and serious problem in engine/inlet compatibility such as engine surge and fan vibration may occur.The use of dynamic total pressure distortion as primary compatibility parameter is questionable and it is indicated that for the engine with larger stall margine,swirl should be the key parameter in engine/inlet compatibility.A new way is developed to determine quickly if there is any bulk swirl at inlei exit without measuring swirl. |
| Key words: Inlet Swirl Research |
