| Aerodynamic optimization and evaluation for the three-dimensional afterbody/nozzle integrated configuration of hypersonic vehicles | |
Gao TY(高太元) ; Cui K(崔凯); Wang XP(王秀平); Hu SC(胡守超); Yang GW(杨国伟); Ren L; [email protected]
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| Source Publication | Chinese Science Bulletin
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| 2012 | |
| Volume | 57Issue:8Pages:849-857 |
| Abstract | The optimization of 2D expansion lines and key parameters of three-dimensional configurations was carried out under simulated conditions of Mach 6.5 and a flight altitude of 25 km for an integrated configuration of the afterbody/nozzle of a hypersonic vehicle. First, the cubic B-spline method was applied to parameterize the expansion lines of the upper expansion ramp. The optimization procedure was established based on computational fluid dynamics and the sequential quadratic programming method. The local mesh reconstruction technique was applied to improve computational efficiency. A three-dimensional integrated configuration afterbody/nozzle was designed based on the two-dimensional optimized expansion lines. The influence rules incorporated certain key design parameters affecting the lift and thrust performance of the configuration, such as the ratio of the lengths of the lower expansion ramp to the afterbody (l/L), the dip angle of the lower expansion ramp ω, and the ratio of exit height to the length of afterbody (H/L). Under these conditions, we found that the integrated configuration has optimal performance when l/L=1/6, H/L=0.35 and ω=10°. We also showed that the presence of a side-board promotes lift and thrust performance, and effectively prevents the leakage of high pressure gas.; |
| Keyword | Hypersonic Afterbody/Nozzle Integrated Configuration Single Expanding Ramp Nozzle Optimization Computational Fluid Dynamics |
| Subject Area | 计算流体力学 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000300771400004 |
| Department | LHD气动布局优化与计算方法 |
| Classification | 二类 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/45666 |
| Collection | 流固耦合系统力学重点实验室 |
| Corresponding Author | [email protected] |
| Recommended Citation GB/T 7714 | Gao TY,Cui K,Wang XP,et al. Aerodynamic optimization and evaluation for the three-dimensional afterbody/nozzle integrated configuration of hypersonic vehicles[J]. Chinese Science Bulletin,2012,57,8,:849-857. |
| APA | Gao TY.,Cui K.,Wang XP.,Hu SC.,Yang GW.,[email protected].(2012).Aerodynamic optimization and evaluation for the three-dimensional afterbody/nozzle integrated configuration of hypersonic vehicles.Chinese Science Bulletin,57(8),849-857. |
| MLA | Gao TY,et al."Aerodynamic optimization and evaluation for the three-dimensional afterbody/nozzle integrated configuration of hypersonic vehicles".Chinese Science Bulletin 57.8(2012):849-857. |
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