Results 31 to 40 of about 28,434 (205)

Numerical Simulation of Influence of Adsorption on Surface Heterogeneous Catalysis Process of Hypersonic Vehicles

Shanghai Jiaotong Daxue xuebao, 2021
In view of the issue that surface catalysis has a significant influence on aerodynamic heating of hypersonic vehicle heatshield and is difficult to accurately predict, a four-step surface heterogeneous catalytic model including physisorption ...
LI Qin, YANG Xiaofeng, DONG Wei, DU Yanxia
doaj   +1 more source

Review of Energy Deposition for High-Speed Flow Control

Energies, 2022
Energy deposition for flow and flight control has received significant interest in the past several decades due to its potential application to high-speed flow and flight control. This paper reviews recent progress and recommends future research.
Doyle Knight, Nadia Kianvashrad
doaj   +1 more source

Influence of injection angles on flow structures and mixing properties in a supersonic combustor at low Mach supersonic crossflow

Scientific Reports
The fuel-air mixing is of paramount importance in hypersonic air-breathing vehicles, and its performance is closely related to the fuel injection angle.
Lin Zhang, Jianhan Liang, Yi Wang, Wei Zhao, Leichao Yang   +4 more
doaj   +1 more source

A Robust Control Method for the Trajectory Tracking of Hypersonic Unmanned Flight Vehicles Based on Model Predictive Control

Drones
Hypersonic unmanned flight vehicles have complex dynamic characteristics, such as nonlinearity, strong coupling, multiple constraints, and uncertainty.
Haixia Ding, Bowen Xu, Weiqi Yang, Yunfan Zhou, Xianyu Wu   +4 more
doaj   +1 more source

Rare‐Earth–Sulfur Surface Modification Enables SiC Ceramics for Low‐Frequency Electromagnetic Wave Absorption in Extreme Environments

Advanced Science, EarlyView.
By altering surface chemical bonds to prolong relaxation time and shift absorption to lower frequencies, SiC/rare earth–sulfur (RE─S, RE = La, Ce, Pr, Sm, Gd, Er) materials achieve excellent low‐frequency electromagnetic wave absorption under extreme conditions, offering a new direction for designing high‐performance SiC‐based absorbers.
Zhanming Wu, Xiaojun Zeng, Yu‐Nan Tan, Chi Yu, Nuohua Xie, Yanfeng Gao   +5 more
wiley   +1 more source

Designing Flight Experiments for Hypersonic Flow Physics [PDF]

, 2005
A major problem of concen for the success of physical-modelling resides in the availability of experimental data for model validation, particularly in the hot hypersonic regime.
Gülhan, A., Turner, J., Weihs, H., Eggers, Th., Longo, J.M.A.   +4 more
core  

Some hypersonic intake studies [PDF]

, 2006
A 'two dimensional' air intake comprisipg a wedge followed by an isentropic compression has been tested in the Cranfield Gun Tunnel at Mach 8,2. These tests were performed to investigate qualitatively the intake flow starting process. The effects of cowl
Lanson, F., Stollery, J. L.
core   +5 more sources

Parametric study of flow and heat transfer characteristics in a regenerative cooling channel with crescent-shaped ribs under non-uniform heat flux

Results in Engineering
Regenerative cooling technology is key for scramjets to cope with extreme thermal loads during operation. Non-uniform heat flux, as an important feature of the propulsive combustion system, poses a serious challenge to the optimization of regenerative ...
Zechuan Yi, Taiyu Wang, Yifeng Yao, Peibo Li, Mingbo Sun, Jikai Chen, Bin An, Changhai Liang, Jiaoru Wang, Menglei Li, Yu Xie, Decong Zhang, Kai Yang, Qi Liu   +13 more
doaj   +1 more source

A Review of Aerodynamic Design for Wide-Speed Range Waverider Vehicle [PDF]

Hangkong bingqi
As a hypersonic aerodynamic configuration that can break through the lift-drag ratio barrier, waverider configuration is an important candidate for wide-speed reusable aircraft. Therefore.
Wang Chenhang, Jin Liang, Zhao Zhentao, Xie Zan, Huang Wei
doaj   +1 more source

Thermal Protection Mechanism of a Novel Adjustable Non-Ablative Thermal Protection System for Hypersonic Vehicles

Aerospace, 2022
In order to improve the thermal protection performance of the active thermal protection system (TPS) based on the spike and jet, an adjustable non-ablative thermal protection system, of which the spike can be rotated in the direction of the free stream ...
Bin Chang, Jie Huang, Wei-Xing Yao
doaj   +1 more source