Results 41 to 50 of about 2,387,085 (259)
Journal of Fluid Mechanics, 2022 We study the structure of high-speed zero-pressure-gradient turbulent boundary layers up to friction Reynolds number $Re_{\tau } \approx 2000$ using direct numerical simulation of the Navier–Stokes equations.
Michele Cogo +3 more
semanticscholar +1 more source
An Improved Method for Initial Sizing of Airbreathing Hypersonic Aircraft
Aerospace, 2023 One essential problem in aircraft conceptual design is initial sizing in which the aircraft primary parameters such as weight, size, and thrust are estimated for given design requirements.
Yalin Dai +3 more
doaj +1 more source
On the Görtler Vortex Instability Mechanism at Hypersonic Speeds [PDF]
Theoretical and Computational Fluid Dynamics, 1989 The linear instability of the hypersonic boundary layer on a curved wall is considered. As a starting point the viscosity of the fluid is taken to be a linear function of temperature and real-gas effects are ignored. It is shown that the flow is susceptible to Gortler vortices and that they are trapped in the logarithmically thin adjustment layer in ...
Yibin Fu, Philip Hall
openaire +2 more sources
Trajectory Estimation of Hypersonic Glide Vehicle Based on Analysis of Aerodynamic Performance
Xibei Gongye Daxue Xuebao, 2019 Due to high speed and high maneuverability of hypersonic glide vehicles (HGVs), the state estimation of such targets has always been a research hotspot.
doaj +1 more source
Transitional hypersonic flow over slender cone/flare geometries
Journal of Fluid Mechanics, 2022 Experiments are performed in a Mach-6 shock tunnel to examine the laminar-to-turbulent transition process associated with a sudden increase in surface angle on a slender body.
C. Butler, S. Laurence
semanticscholar +1 more source
Experimental Investigation of Brazilian 14-X B Hypersonic Scramjet Aerospace Vehicle
International Journal of Aerospace Engineering, 2017 The Brazilian hypersonic scramjet aerospace vehicle 14-X B is a technological demonstrator of a hypersonic airbreathing propulsion system based on the supersonic combustion (scramjet) to be tested in flight into the Earth’s atmosphere at an altitude of ...
João Felipe de Araujo Martos +5 more
doaj +1 more source
Hydrocarbon Fuel Flow and Heat Transfer Investigation in Rotating Channels
Energies, 2023 Ram air turbines are used in the power generation systems of hypersonic vehicles, which can address the problem of the high power consumption of weapon systems.
Mengqiang Dong, Hongyan Huang
doaj +1 more source
Stabilized detonation for hypersonic propulsion
Proceedings of the National Academy of Sciences of the United States of America, 2021 Significance There is now an intensifying international effort to develop robust propulsion systems for hypersonic and supersonic flight. Such a system would allow flight through our atmosphere at very high speeds and allow efficient entry and exit from ...
D. Rosato +5 more
semanticscholar +1 more source
Impact-Time-Control Guidance Law for Hypersonic Missiles in Terminal Phase
IEEE Access, 2020 Recent researches on hypersonic vehicles adopted in military have gained a lot of interest because of its high flight speed and efficiency. However the guidance laws for hypersonic missiles against the anti-missile system to increase survivability and ...
Chenhao Zhu +4 more
doaj +1 more source
Advanced Materials, EarlyView.A nonlinear conductive graphene composite (NcGc) layer, incorporating a conductive laser‐reduced graphene oxide layer, is assembled into flexible pressure sensors without microstructural designs, achieving high sensitivity (742.3 kPa−1) and a wide linear sensing range (>800 kPa).
Feng Luo +2 more
wiley +1 more source