一种可变流量系数的通气短舱匹配方法

doi:10.7527/S1000-6893.2018.22379

流体力学与飞行力学

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一种可变流量系数的通气短舱匹配方法

闫海津, 杜玺

中国商飞北京民用飞机技术研究中心民用飞机设计数字仿真技术北京市重点实验室, 北京 102211

收稿日期:2018-05-29 修回日期:2018-06-25 出版日期:2018-12-15 发布日期:2018-12-06
通讯作者: 闫海津 E-mail:yanhaijin@comac.cc

A matching method for variable mass flow ratio for through-flow nacelle

YAN Haijin, DU Xi

Beijing Key Laboratory of Simulation Technology for Civil Aircraft Design, Beijing Aeronautical Science and Technology Research Institute of COMAC, Beijing 102211, China

Received:2018-05-29 Revised:2018-06-25 Online:2018-12-15 Published:2018-12-06

摘要/Abstract

摘要： 要获得与动力短舱流量系数（MFR）一致的通气短舱，可在飞机气动设计和风洞试验过程中使用通气短舱（TFN）代替动力短舱（PN）模拟发动机短舱效应和短舱进气，以简化设计流程和降低试验成本。在研究流量系数变化对短舱和进气道气动特性影响时，需要匹配多种不同流量系数的通气短舱方案，本文在保持短舱外罩和进气道外形不变的条件下，在短舱内增加锥形堵块，通过调整堵锥的位置可快速获得不同流量系数的通气短舱，相较传统设计通气内涵匹配流量系数的方式效率更高。应用所提出的思路设计的独立通气短舱风洞试验方案得到了验证，实测流量系数与设计值吻合良好，证明了方法的可行性。

关键词: 通气短舱, 动力短舱, 流量系数, 堵锥, 气动特性

Abstract: To simplify the design and reduce the cost of the wind tunnel test, the Mass Flow Ratio (MFR) of Through-Flow Nacelle (TFN) should be matched with the Powered Nacelle (PN) which can be simulated by using the TFN instead of the PN in the aircraft aerodynamic design and the wind tunnel test. However, when studying the TFN aerodynamic characteristics under different MFRs, specific TFN designs need to be carried out to match the MFR. In this paper, while maintaining the nacelle outside cover and intake shape unchanged, a conical plug is added in the TFN and by adjusting the positions of the conical plug, different MFRs can be acquired faster. This method is more efficient compared with the traditional method. The isolated nacelle wind tunnel using the designed method is tested, and the test results well match with the design results, proving the feasibility of adding a conical plug in the TFN.

Key words: through-flow nacelle, powered nacelle, mass flow ratio, conical plug, aerodynamics

中图分类号:

V211

闫海津, 杜玺. 一种可变流量系数的通气短舱匹配方法[J]. 航空学报, 2018, 39(12): 122379-122379.

YAN Haijin, DU Xi. A matching method for variable mass flow ratio for through-flow nacelle[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(12): 122379-122379.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

一种可变流量系数的通气短舱匹配方法

A matching method for variable mass flow ratio for through-flow nacelle

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