Experimental Study of TBCC Engine Performance in Low Speed Wind Tunnel

被引：0
|
作者：
Guo F. [1 ]
Gui F. [2 ]
You Y.-C. [1 ]
Zhu J.-F. [1 ]
Zhu C.-X. [1 ]
机构：
[1] School of Aerospace Engineering, Xiamen University, Xiamen
[2] AECC Sichuan Gas Turbine Establishment, Chengdu
来源：
Tuijin Jishu/Journal of Propulsion Technology | 2019年 / 40卷 / 11期
关键词：
Coupling characteristics; Engine performance; Flow allocation; Pressure distribution; TBCC (Turbine-based combined cycle); Three dimensional inward turning combined inlet;
D O I：
10.13675/j.cnki.tjjs.180667
中图分类号：
学科分类号：
摘要：
A three-power turbine-based combined cycle engine with multi-ducts was tested in a low speed wind tunnel. The coupling characteristics of turbine engines and inlet are analyzed from the aspects of engine's performance, mass flow allocation and total pressure distribution at turbine entrance. The coupling characteristics of three-dimensional inward turning combined inlet and turbine engine are analyzed: the three-dimensional internal turning inlet will bring the maximum total pressure loss of 10% to the turbine engine in low-speed freestream, resulting in a maximum loss of 24% in thrust and a 26% increase in specific fuel consumption. The total pressure distribution at turbine entrance is uneven, and the static pressure decreases first and then increases along the turbojet flow path of inlet. As the turbine rotating speed increase, the high-pressure zone at the turbine entrance gradually moves to one side. In order to reduce the flow loss of the turbojet flow path, the three-dimensional inward turning inlet need to match the working state of the turbine engine. It is suggested to install auxiliary inlet valve or other drainage system and adjust the ramjet flow path dynamically. © 2019, Editorial Department of Journal of Propulsion Technology. All right reserved.
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页码：2436 / 2443
页数：7
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