Design and Application of Double Inlet Wind Tunnel Test System

被引：0

作者：

Kang H.-M. ^{[1
]}

Xu B.-B. ^{[1
]}

Kong P. ^{[1
]}

Liu J.-T. ^{[1
]}

Wu C.-J. ^{[1
]}

机构：

[1] Low Speed Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang

来源：

Tuijin Jishu/Journal of Propulsion Technology | 2023年 / 44卷 / 07期

关键词：

Double inlet; Ejector; Flowmeter; Throttle cone; Wind tunnel;

D O I：

10.13675/j.cnki.tjjs.2203098

中图分类号：

学科分类号：

摘要：

In order to meet the requirements of performance matching under different working conditions and mutual interference test，and to solve the problems of insufficient flow control and low measurement accuracy at a large flow field distortion，a double inlet test system was developed in FL-12 wind tunnel. In order to improve the flow field quality and measuring precision of the flowmeter，a smooth shape fairing and a rectifier device composed of honeycomb and damping net were adopted. The system used a single large flow column distributed ejector to meet the flow requirements of the double inlet. The control system based on RTEX network protocol was adopted to realize the closed-loop control and accurate positioning of the throttle cone position. The performance and parameters of the flowmeter were verified by calibration test and wind tunnel test，and the comprehensive capability of the system was tested. The results show that the flow field uniformity of the flowmeter is significantly improved compared with the inlet. Within the common stroke range of throttle cone，the comprehensive measurement accuracy can reach 0.1%，and the suction flow required by the inlet can be accurately simulated. Therefore，the system can fully meet the requirements of the double inlet wind tunnel test，and provide important support for the design and optimization of the aircraft inlet. © 2023 Journal of Propulsion Technology. All rights reserved.

引用

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