Results 21 to 30 of about 61,014 (226)
Advances in Aerodynamics, 2019 How to solve the hypersonic aerothermodynamics around large-scale uncontrolled spacecraft during falling disintegrated process from outer space to earth, is the key to resolve the problems of the uncontrolled Tiangong-No.1 spacecraft reentry crash.
Zhi-Hui Li +5 more
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Effect of gas blowing on the head of thermal ablation vehicle
Advances in Aerodynamics, 2022 The reentry vehicle will encounter thermal ablation, especially at the stagnation point regime. A theoretical work has been done to analyze the thermal effect of gas blowing due to thermal ablation of surface material on the head of a general hypersonic ...
Qing Li +3 more
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Urban heat island: Aerodynamics or imperviousness?
Science Advances, 2019 Vegetation and moisture play the most important roles in controlling daytime urban heat islands and their spatial variability. More than half of the world’s population now live in cities, which are known to be heat islands.
Dan Li +6 more
semanticscholar +1 more source
From primary instabilities to secondary instabilities in Görtler vortex flows
Advances in Aerodynamics, 2019 We have studied the transformation process from primary instabilities to secondary instabilities with direct numerical simulations and stability theories (Spatial Biglobal and plane-marching parabolized stability equations) in detail. First Mack mode and
Xi Chen +4 more
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Research on Variable-Step-Size Adaptive Filter Algorithm with a Momentum Term
Applied Sciences, 2023 To address the contradiction between the convergence error and convergence rate in the LMS algorithm, this study proposes a variable-step-size adaptive filter algorithm with a momentum term based on the logistic function.
Binbin Li +7 more
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Review of research on high-speed railway aerodynamics in China
Transportation Safety and Environment, 2019 High-speed railway aerodynamics is the key basic science for solving the bottleneck problem of high-speed railway development. This paper systematically summarizes the aerodynamic research relating to China’s high-speed railway network.
H. Tian
semanticscholar +1 more source
Xibei Gongye Daxue Xuebao, 2019 With the continuous development and widespread attention of electric propulsion technology in traditional transportation fields such as automobiles and trains, the distributed propeller propulsion technology applied to electric or hybrid electric medium ...
doaj +1 more source
Advances in Aerodynamics, 2021 In order to visualize the rarefied flow field in a Φ1m hypersonic low-density wind tunnel, an electric glow discharge technique based on high frequency excited power has been developed.
Wanqiu Jiang +7 more
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Deformation Measurements of Helicopter Rotor Blades Using a Photogrammetric System
Photonics, 2022 As an important part of the helicopter, the rotor directly affects flight safety and flight quality. Knowledge of the rotor dynamic behaviors is significant for validating and optimizing the performance of the helicopter rotor system.
Chenglin Zuo +4 more
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Hangkong gongcheng jinzhan, 2019 With the increase in demand for long range rapid delivery of heavy equipment and materials such as missile launch vehicles, heavy tanks, and intelligent unmanned clusters, and the gradual maturity of penetrating counterair capabilities such as stealth ...
Yang Xiaochuan +5 more
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