CLC number: V43
On-line Access: 2019-05-06
Received: 2018-11-02
Revision Accepted: 2019-03-27
Crosschecked: 2019-04-03
Cited: 0
Clicked: 6588
Xun Wen, Jun Liu, Jie Li, Feng Ding, Zhi-xun Xia. Design and numerical simulation of a clamshell-shaped inlet cover for air-breathing hypersonic vehicles[J]. Journal of Zhejiang University Science A, 2019, 20(5): 347-357.
@article{title="Design and numerical simulation of a clamshell-shaped inlet cover for air-breathing hypersonic vehicles",
author="Xun Wen, Jun Liu, Jie Li, Feng Ding, Zhi-xun Xia",
journal="Journal of Zhejiang University Science A",
volume="20",
number="5",
pages="347-357",
year="2019",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1800620"
}
%0 Journal Article
%T Design and numerical simulation of a clamshell-shaped inlet cover for air-breathing hypersonic vehicles
%A Xun Wen
%A Jun Liu
%A Jie Li
%A Feng Ding
%A Zhi-xun Xia
%J Journal of Zhejiang University SCIENCE A
%V 20
%N 5
%P 347-357
%@ 1673-565X
%D 2019
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1800620
TY - JOUR
T1 - Design and numerical simulation of a clamshell-shaped inlet cover for air-breathing hypersonic vehicles
A1 - Xun Wen
A1 - Jun Liu
A1 - Jie Li
A1 - Feng Ding
A1 - Zhi-xun Xia
J0 - Journal of Zhejiang University Science A
VL - 20
IS - 5
SP - 347
EP - 357
%@ 1673-565X
Y1 - 2019
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1800620
Abstract: An efficient clamshell-shaped inlet cover configuration based on a shockwave interference methodology is proposed, which has the advantage of an autonomous opening using the aerodynamic force and moment. A preliminary design method for the inlet cover is introduced and used to produce cover models of two different lengths, with contributions similar to those of cowlings, rocket fairings, shrouds, or false ogives. The clamshell-shaped inlet cover features a practical design with a wide range of applications, including utilization in air-breathing hypersonic vehicles under specific constraints. In this investigation, aerodynamic numerical simulations were conducted to evaluate the extent to which the objectives and design principles are achieved for two typical ballistic separation states. The results show that both configurations can prevent an excessive accumulation of shockwaves in the nose cone area. In addition, the inlet cover generates negative lift, which results in the generation of an opening moment. The calculated heat flux at the leading edge of the clamshell-shaped inlet cover is approximately 13 MW/m2, which is within the limit of the composite material but slightly higher than that of the stagnation point of the nose cone.
In this paper, a novel clamshell-shaped inlet cover of two profiles were developed for air-breathing hypersonic vehicles under specific constraints. To validate the inlet cover system's reliability, numerical simulation was performed using commercial software ANSYS Fluent.
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