Results 171 to 180 of about 9,113 (233)
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The Aeronautical Journal, 2007
AbstractThe supersonic combustion ramjet, or scramjet, is the engine cycle most suitable for sustained hypersonic flight in the atmosphere. This article describes some of the challenges facing scramjet designers, and the methods currently used for the calculation of scramjet performance.
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AbstractThe supersonic combustion ramjet, or scramjet, is the engine cycle most suitable for sustained hypersonic flight in the atmosphere. This article describes some of the challenges facing scramjet designers, and the methods currently used for the calculation of scramjet performance.
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2021
Combustion occurs at supersonic speeds in a scramjet engine. Lower air residence time is the factor affecting proper fuel–air mixing, flame propagation and cooling of engine components. This current study includes systematic review of fuel–air mixing inside the combustor through various design changes and augmentations and strides to present at the ...
Riyan Cyriac Jose +3 more
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Combustion occurs at supersonic speeds in a scramjet engine. Lower air residence time is the factor affecting proper fuel–air mixing, flame propagation and cooling of engine components. This current study includes systematic review of fuel–air mixing inside the combustor through various design changes and augmentations and strides to present at the ...
Riyan Cyriac Jose +3 more
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Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 1999
As flight speed increases into the hypersonic regime, the stagnation pressure and temperature inside the engine become so great that, for practical structures of acceptable mass, the flow must pass through the engine at supersonic, rather than subsonic, speeds, hence the term ‘scramjet’ (supersonic combustion ramjet).
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As flight speed increases into the hypersonic regime, the stagnation pressure and temperature inside the engine become so great that, for practical structures of acceptable mass, the flow must pass through the engine at supersonic, rather than subsonic, speeds, hence the term ‘scramjet’ (supersonic combustion ramjet).
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LES of the Hyshot Scramjet Combustor
48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 2010With the overall goal to clarify the physics of com pressible (supersonic) combustion, a 3D LES of the HyShot supersonic combustor has been performed and is reported in this paper. HyShot is an (originally) Australian p rogram to assess feasibility of supersonic combustion by means of a ballistic test flight.
INGENITO, ANTONELLA, C. Bruno, D. Cecere
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LES Modeling of Scramjet Combustion
44th AIAA Aerospace Sciences Meeting and Exhibit, 2006The physics of supersonic combustion is analyzed in order to derive a new subgrid scale model for Large Eddy Simulation. Anisotropy associated to the directional Mach number typical of supersonic flows (i. e., M > 1 in only one direction) is explicitly considered by means of non-dimensionalized Navier-Stokes equations.
INGENITO, ANTONELLA +4 more
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Space Plane and Hypersonic Systems and Technology Conference, 1996
A scaling study was performed to determine the scaling laws for the performance of scramjet engines. Experiments were performed on two centrally injected scramjets in the reflected shock tunnel, T4. The scramjets had a 5:1 scale to all their dimensions. The binary scaling (pressure scaling) law was tested on the two scramjets meaning the product of the
Pulsonetti M.V., Stalker R.
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A scaling study was performed to determine the scaling laws for the performance of scramjet engines. Experiments were performed on two centrally injected scramjets in the reflected shock tunnel, T4. The scramjets had a 5:1 scale to all their dimensions. The binary scaling (pressure scaling) law was tested on the two scramjets meaning the product of the
Pulsonetti M.V., Stalker R.
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Scramjet intake and exhaust CFD studies for the HyShot scramjet flight experiment
10th AIAA/NAL-NASDA-ISAS International Space Planes and Hypersonic Systems and Technologies Conference, 2001Computational fluid dynamics calculations have been performed in support of the HyShot scramjet flight experiment, which will employ two symmetrically opposed intake/combustor/exhaust nozzles (one being fuel-on, the other fuel-off). Bleed ducts for removal of intake shocks and boundary and entropy layers are incorporated.
Boyce R.R., Paull A.
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Scramjet Experiments using Radical Farming [PDF]
, 2023 Scramjet engines are the focus of considerable interest for propulsion in the hypersonic flow regime. One of the serious technical challenges for developing scramjets is reducing the skin friction drag on the engine. The combustion chamber, in particular, is a major contributor to the skin friction drag because of the high density of the flow through ...
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Journal of Propulsion and Power, 2001
Ase ightspeedincreasesinto thehypersonicregime, stagnation pressureand temperatureinsidean airbreathing engine become so great that, for practical structures of acceptable mass, the e ow must pass through the engine at supersonic speeds so as to limit the static pressures, hence the term scramjet (supersonic combustion ramjet ).
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Ase ightspeedincreasesinto thehypersonicregime, stagnation pressureand temperatureinsidean airbreathing engine become so great that, for practical structures of acceptable mass, the e ow must pass through the engine at supersonic speeds so as to limit the static pressures, hence the term scramjet (supersonic combustion ramjet ).
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2009
The renewed interest in high-speed propulsion has led to increased activity in the development of the supersonic combustion ramjet engine for hypersonic flight applications. In the hypersonic regime the scramjet engine's specific thrust exceeds that of other propulsion systems.
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The renewed interest in high-speed propulsion has led to increased activity in the development of the supersonic combustion ramjet engine for hypersonic flight applications. In the hypersonic regime the scramjet engine's specific thrust exceeds that of other propulsion systems.
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