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Aerodynamic characteristics of different configurations of mechanically deployable aerodynamic decelerator in subsonic region

Published online by Cambridge University Press:  16 April 2024

C. Yun Open the ORCID record for C. Yun [Opens in a new window]  and
D. Liu Open the ORCID record for D. Liu [Opens in a new window]
C. Yun
Affiliation:
Department of Aerospace Science and Technology, Space Engineering University, Beijing 101416, China
D. Liu*
Affiliation:
Department of Aerospace Science and Technology, Space Engineering University, Beijing 101416, China
*
Corresponding author: D. Liu; Email: [email protected]
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Abstract

The deceleration effect of the deployable aerodynamic decelerator is not as good as a parachute in the subsonic region. This paper proposes a novel concept of using a parachute-like configuration (PLC) to enhance the deceleration performance of the mechanically deployable aerodynamic decelerator (MDAD) through structural transformation. The MDAD turned into the PLC from the sphere cone configuration (SCC) at Ma 0.8. The aerodynamic characteristics of the two configurations are analysed deeply. Compared to the SCC, the results show that the drag coefficient increases effectively, and the maximum increases is about 10% in the PLC. The airflow is altered by the MDAD configuration, which can affect the surface pressure and temperature. During the transformation process, the axial and normal force coefficients tend to stabilise. However, the static stability of the PLC deteriorates sharply compared to the SCC when the angle-of-attack exceeds 45°.

Keywords

deployable aerodynamic deceleratorparachute-like configurationdragaxis and normal forcestatic stability
Type
Research Article
Information
The Aeronautical Journal , First View , pp. 1 - 13
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of Royal Aeronautical Society

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