Title:
FORWARD JET DRAG REDUCTION AND HEAT SHIELDING METHOD FOR HYPERSONIC POINTED-CONE AIRCRAFT
Document Type and Number:
WIPO Patent Application WO/2023/213196
Kind Code:
A1
Abstract:
A forward jet drag reduction and heat shielding method for a hypersonic pointed-cone aircraft. A jet drag reduction and heat shielding system is arranged at a windward wall surface of the aircraft, the jet drag reduction and heat shielding system comprises a plurality of exhaust nozzles, wherein the exhaust nozzles make forward jets in an incoming flow direction of the windward wall surface of the aircraft; and the exhaust nozzles are sonic or supersonic exhaust nozzles, the plurality of exhaust nozzles are uniformly distributed in a circumferential direction or a spanwise direction of a pointed-cone to form an array covering a circumferential direction range or a spanwise direction range, and the shape, dimensions and operating parameters of the exhaust nozzles are optimized. In the method, for the hypersonic pointed-cone aircraft, the jet drag reduction and heat shielding system can be arranged in a major area of a windward side of the aircraft, can separately reduce pressure drag and friction drag by different mechanisms, and achieves heat shielding while implementing jet drag reduction, a heat flux reduction effect exists on a downstream jet under different jet conditions, and a heat flux reduction area covers a cone section and extends to a cylinder section.
Inventors:
JIANG CHONGWEN (CN)
HAN TIANYIXING (CN)
HU SHUYAO (CN)
GAO ZHENXUN (CN)
LI CHUNXUAN (CN)
HAN TIANYIXING (CN)
HU SHUYAO (CN)
GAO ZHENXUN (CN)
LI CHUNXUAN (CN)
Application Number:
PCT/CN2023/089674
Publication Date:
November 09, 2023
Filing Date:
April 21, 2023
Export Citation:
Assignee:
UNIV BEIHANG (CN)
International Classes:
B64C21/04; B64C30/00
Foreign References:
| CN114572387A | 2022-06-03 | |||
| CN112758309A | 2021-05-07 | |||
| CN112498658A | 2021-03-16 | |||
| US4567960A | 1986-02-04 | |||
| US20190331024A1 | 2019-10-31 | |||
| US20190301400A1 | 2019-10-03 | |||
| CN113353241A | 2021-09-07 | |||
| CN113588200A | 2021-11-02 |
Attorney, Agent or Firm:
BEIJING TIANHUIHANGZHI INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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