Results 71 to 80 of about 8,406 (224)

Analysis of combustion modes in a cavity based scramjet

open access: yesCombustion and Flame, 2020
Large eddy simulations (LES) of non reactive and reactive flows in a cavity-based scramjet combustor configuration from the U.S Air Force Research Laboratory (AFRL) are performed.
J. Ruan, P. Domingo, G. Ribert
semanticscholar   +1 more source

Development of the fuel heating device for the component test of aerospace propulsion systems

open access: yesJournal of Fluid Science and Technology, 2016
For the next generation space launch vehicle, fully reusable spaceplane with rocket and ramjet combined propulsion system is proposed. That type of spaceplane can drastically reduce the cost per unit mass of the payload.
Mitsuhiro SOEJIMA   +3 more
doaj   +1 more source

Experimental investigation of unstart dynamics driven by subsonic spillage in a hypersonic scramjet intake at Mach 6

open access: yes, 2020
Understanding start–unstart behavior of intakes in hypersonic Mach numbers is essential for seamless operation of scramjet engines.
M. K. Devaraj   +4 more
semanticscholar   +1 more source

CFD Investigation of Supersonic Scramjet Exhaust Geometry for Emission Reduction and Sustainable Hypersonic Propulsion [PDF]

open access: yesEPJ Web of Conferences
This study employs CFD analysis to optimize the scramjet exhaust divergent angle with the aim of improving propulsion efficiency and reducing environmental impact in hypersonic flight.
Paramadhayalan P.   +8 more
doaj   +1 more source

Numerical Study of Transverse Injection into Supersonic flow of the Scramjet Combustor [PDF]

open access: yesفناوری در مهندسی هوافضا, 2018
Nowadays efforts for development of the scramjet engines are increased. Scramjet engines use atmospheric oxygen as an oxidizer therefore they don’t need oxidizer tanks, thus the weight of these systems is less than comparable rocket systems.
Mostafa Zahedzadeh, Fathollah Ommi
doaj  

Numerical Simulation of a Vortex Combustor Based on Aluminum and Steam

open access: yesEnergies, 2016
In this paper we report a new development in the numerical model for aluminum-steam combustion. This model is based on the diffusion flame of the continuum regime and the thermal equilibrium between the particle and the flow field, which can be used to ...
Xianhe Chen   +3 more
doaj   +1 more source

Ramjet Compression System for a Hypersonic Air Transportation Vehicle Combined Cycle Engine

open access: yesEnergies, 2018
This report assesses the performance characteristics of a ramjet compression system in the application of a hypersonic vehicle. The vehicle is required to be self-powered and perform a complete flight profile using a combination of turbojet, ramjet and ...
Sasha Veeran   +2 more
doaj   +1 more source

Influence of helix angle on heat transfer characteristics of regenerative cooling in spiral channel

open access: yesCase Studies in Thermal Engineering
A rapid solution method for spiral line and a one-dimensional (1-D) heat transfer calculation model for spiral regenerative cooling channels (RCCs) are proposed to clarify the influence of the helix angle on the heat transfer characteristics of spiral ...
Xinlin Liu   +4 more
doaj   +1 more source

Dynamic Flow and Heat Transfer Characteristics of Uncracked Hydrocarbon Fuel under Super-Critical Pressure in the Cooling Channel of a Regeneratively Cooled Scramjet

open access: yesApplied Sciences
Regeneratively cooled scramjets are successfully used as propulsion devices in hypersonic vehicles. During operation, scramjets experience acceleration. This special process causes a dynamic flow process, and heat transfer in the cooling channel commonly
Qing Xu   +3 more
doaj   +1 more source

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