Experimental Fluid DynamicsNo Access

Investigation of aerodynamics of separator delivery from cavity

Fei Xue

China Academy of Aerospace Dynamics, No. 17 Yungang Road, Fengtai District, Beijing, P. R. China

E-mail Address: 12.9258@163.com

Corresponding author.

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Yuchao Wang

China Academy of Aerospace Dynamics, No. 17 Yungang Road, Fengtai District, Beijing, P. R. China

E-mail Address: 15201661429@163.com

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, and

Peng Bai

China Academy of Aerospace Dynamics, No. 17 Yungang Road, Fengtai District, Beijing, P. R. China

E-mail Address: baipengaero@163.com

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https://doi.org/10.1142/S0217979220401049Cited by:1 (Source: Crossref)

This article is part of the issue:

Special Issue — Proceedings of the Eighth International Symposium on Physics of Fluids (ISPF8), 10–13 June, 2019, Xi'an, China

Abstract

The ejection test technology is studied in a sub-transonic supersonic wind tunnel using a single cylinder to provide ejection velocity. The angular velocity adjusting device of ejection mechanism is designed, which can adjust the ejection velocity and angular velocity of the model independently. When the ejection cylinder moves downward, the angular velocity adjusting mechanism works at the same time, so that the model has the preset ejection velocity and angular velocity at the moment of leaving the ejection frame. The ejection velocity error is less than 5%, the angular velocity error is less than 10%, and the repetition rate is more than 95%. The new technology has been verified by wind tunnel tests under complex aerodynamic conditions of sub-transonic supersonic and multi-body interference. All parameters have reached or surpassed the existing technical specifications. It has served for model tests many times and met the needs of wind tunnel test research on ejection of embedded weapons in aircraft.

Keywords:

PACS: 47.85.Gj, 47.40.Ki

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