Results 61 to 70 of about 27,081 (222)

Research on the Zooming Method for Determining the Flow, Heat Transfer, and Infrared Radiation of an Air-Breathing Hypersonic Vehicle Powered by a Scramjet

open access: yesAerospace
In order to study the infrared radiation characteristics of an air-breathing hypersonic vehicle powered by a scramjet, it is necessary to solve the internal and external flow field of the air-breathing hypersonic vehicle.
Xin Wei   +3 more
doaj   +1 more source

OH Airglow for Ionospheric Seismology Applications—From Instrumental Noise Characterization to Rayleigh Waves Detection Threshold

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract Airglow layers are powerful tracers of upper‐atmosphere dynamics because of their sensitivity to a broad spectrum of atmospheric wave phenomena. Seismic activity, and in particular Rayleigh waves, constitutes a forcing mechanism capable of generating infrasonic waves in the atmosphere.
P.‐Y. Froissart   +4 more
wiley   +1 more source

Numerical Analysis of Supersonic Film Cooling in Supersonic Flow in Hypersonic Inlet with Isolator

open access: yesAdvances in Mechanical Engineering, 2014
Supersonic film cooling is an efficient method to cool the engine with extremely high heat load. In order to study supersonic film cooling in a real advanced engine, a two-dimensional model of the hypersonic inlet in a scramjet engine with supersonic ...
Silong Zhang   +3 more
doaj   +1 more source

Hypersonic turbulent wall boundary layer computations [PDF]

open access: yes
The Baldwin-Lomax algebraic turbulence model was modified for hypersonic flow conditions. Two coefficients in the outer layer eddy viscosity model were determined as functions of Mach number and temperature ratio.
Harloff, G. J., Kim, S. C.
core   +1 more source

Effect of Sintering Parameters on the Densification, Microstructure, and Mechanical Performance of ZrB2–SiC Ceramics

open access: yesInternational Journal of Applied Ceramic Technology, Volume 23, Issue 2, April 2026.
This graphical abstract illustrates the systematic investigation of Spark Plasma Sintering (SPS) parameters, temperature, pressure, and dwell time, on the densification and mechanical performance of ZrB2–20 vol% SiC composites. It highlights the critical influence of powder processing history (WC vs.
Prakhar Jindal   +5 more
wiley   +1 more source

Delayed Detached Eddy Simulation of a Transverse Supersonic Jet into Hypersonic Crossflow

open access: yesSpace: Science & Technology
In both military and civil industries, the complex flow field induced by a jet exhausting has widespread applications, such as supersonic/hypersonic vehicle reaction control systems, thrust vector control systems on rocket motors, and supersonic ...
Jikui Ma, Yaofeng Liu, Yuwei Liu
doaj   +1 more source

Numerical simulation of the hypersonic flow around lifting vehicles [PDF]

open access: yes
A method for solving the viscous hypersonic flow field around realistic configurations is presented. The numerical procedure for generating the required finite difference grid and the two-factored implicit flow solver are described. Results are presented
Chaussee, Denny   +2 more
core   +1 more source

Transition to turbulence in laminar hypersonic flow [PDF]

open access: yes
Progress in a recently started project aimed at the prediction of transition to turbulence in hypersonic flow is briefly discussed. The prediction of transition to turbulence is a very important issue in the design of space vessels.
Vandervegt, Jaap
core   +1 more source

Starting Process of a Double-Throat Ludwieg Tube Tunnel and the Extension of Its Effective Running Time

open access: yes气体物理
The Ludwieg tube wind tunnel serves as a crucial testing ground for fundamental studies of hypersonic aerodynamics. However, the quick-opening valve-started hypersonic Ludwieg tube wind tunnel has been affected by the quick-opening valve for a long time,
Chuangchuang LI   +3 more
doaj   +1 more source

Computational analysis of hypersonic airbreathing aircraft flow fields [PDF]

open access: yes
The general problem of calculating the flow fields associated with hypersonic airbreathing aircraft is presented. Unique aspects of hypersonic aircraft aerodynamics are introduced and their demands on computational fluid dynamics are outlined.
Dwoyer, Douglas L., Kumar, Ajay
core   +1 more source

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