Results 11 to 20 of about 8,406 (224)

Fill-In and Boiling Transition Characteristics during the Liquid Oxygen Chill-Down Process in a Vertical Exit-Contracted Pipe

open access: yesInternational Journal of Aerospace Engineering, 2022
Liquid oxygen chill-down in a vertical exit-contracted pipe was investigated experimentally. The wall temperatures were recorded in detail to describe the filling and chill-down process of the experimental section.
Jiaqi Zhang, Ke Wang, Lanwei Chen
doaj   +1 more source

Experimental Study of the Formation and Evolution of Gas Jets in Supersonic Combustion Chambers

open access: yesApplied Sciences, 2023
A simple and efficient flow field visualization method (based on shadow imaging) was applied in a direct-connect test to explore the influence of the momentum flux ratio and the jet angle on the formation and evolution of nitrogen jets in supersonic ...
Yifan Duan   +6 more
doaj   +1 more source

Fast and reliable prediction of scramjet flowfields via Gaussian process latent variable model and deep learning

open access: yesThe Physics of Fluids, 2023
Fast and accurate prediction of high-speed flowfields is of particular interest to researchers in fluid science and engineering to enable efficient design exploration and knowledge discovery.

semanticscholar   +1 more source

Sizing of scramjet vehicles [PDF]

open access: yesProgress in Propulsion Physics, 2011
The current European project LAPCAT II has the ambitious goal to de¦ne a conceptual vehicle capable of achieving the antipodal range Brussels Sydney (∼ 18,000 km) in about 2 h at Mach number Ma = 8. At this high speed, the requirement of high lift to drag (L/D) ratio is critical to high performance, because of high skin friction and wave drag: in fact,
INGENITO, ANTONELLA, GULLI S, BRUNO C.
openaire   +2 more sources

Effect of Fuel-Injection Distance and Cavity Rear-Wall Height on the Flameholding Characteristics in a Mach 2.52 Supersonic Flow

open access: yesAerospace, 2022
The ethylene-fueled flameholding characteristics of a cavity-based scramjet combustor are experimentally and numerically investigated. The test facility used the air heater, which heats air from room temperature to total temperature 1477 K.
Zhonghao He   +5 more
doaj   +1 more source

Design method of supercritical hydrocarbon fuel injection for a scramjet

open access: yesAdvances in Aerodynamics, 2022
Both the fuel transfer control scheme and the knowledge of fuel temperature and pressure values before injection are important to a scramjet engine.
Lei Zhang   +3 more
doaj   +1 more source

Mechanism of development of turbulent boundary layer in a curved circular pipe under supersonic conditions

open access: yesAIP Advances, 2022
This study investigates the characteristics of a turbulent boundary layer in a curved circular pipe under an inflow of Ma = 3.0. The pipe consisted of a straight part and a curved part with a turning angle of 36° and a radius of curvature, γ = R/Rc, of γ
Chang-Hai Liang   +8 more
doaj   +1 more source

Recent Advancements in Design Optimization of Lattice‐Structured Materials

open access: yesAdvanced Engineering Materials, Volume 25, Issue 17, September 2023., 2023
Enhancement in the performance of lattice materials involves improving the design in the manufacturing process. Functional gradation and multimorphology strategies are utilized to enhance the multifunctionality of lattice materials. As the preceding strategies involve challenges and limitations, utilizing them concurrently with automated design ...
Abdulla Alhembar   +4 more
wiley   +1 more source

Research progress on solid-fueled Scramjet

open access: yesChinese Journal of Aeronautics, 2021
The solid-fueled Scramjet is an interesting option for supersonic combustion ramjet. It shows significant advantages such as simple fuel supply and compactness, avoiding the complex system of tanks and pipelines that encountered in liquid-fueled ...
Xiang Zhao   +6 more
semanticscholar   +1 more source

Numerical Investigation of an Axisymmetric Model Scramjet Assisted with Cavity of Different Aft Wall Angles

open access: yesInternational Journal of Aerospace Engineering, 2021
An axisymmetric model scramjet assisted with cavity flameholder is numerically investigated. Three-dimensional Reynolds-averaged Navier-Stokes simulation is carried out to reveal the fuel mixing and combustion characteristics. The simulation results show
Guangwei Ma   +6 more
doaj   +1 more source

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