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Showing 1 to 20 of 64 for “"scramjet"”.
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Parametric Scramjet Analysis
… this work presents the performance of the ideal scramjet engine for three different combustion chamber materials and three different candidate fuels. Engine performance is explored by parametric cycle analysis for the ideal scramjet as a function of material maximum service temperature and the …
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Constant Velocity Combustion Scramjet Analysis
The supersonic combustion ramjet or scramjet, is the most suitable engine cycle for sustained hypersonic flight in the atmosphere. The present work deals with the performance of a scramjet engine by parametrically analyzing the performance of the ideal scramjet using the engine parameters: specific …
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Chemical kinetics of SCRAMJET propulsion
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1988.
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Investigations of Injectors for Scramjet Engines
… those that might be produced by the inlet of a scramjet or the forebody of a vehicle to be controlled by jet interaction phenomena. The additional axial vortices were generated by a strut-mounted, diamond cross-section wing mounted upstream of the injection location. The wing was designed to …
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Scramjet combustion modeling using eddy dissipation model
In order to aid in the design of scramjet propulsion systems at high Mach number operation, this works considers the Eddy Dissipation Model (EDM) to describe the combustion process inside an open-access Computational Fluid Dynamics (CFD) solver. Typical CFD modeling approaches for turbulent …
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Energy-turns analysis for a scramjet powered missile
… the energy and heading angle dynamics of a scramjet missile is developed using a singular perturbation technique. The cruise analysis is briefly reviewed to determine the conditions at which the missile will cruise most efficiently. The turn and climb performance of the missile over the …
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One Dimensional Analysis Program for Scramjet and Ramjet Flowpaths
One-Dimensional modeling of dual mode scramjet and ramjet flowpaths is a useful tool for scramjet conceptual design and wind tunnel testing. In this thesis, modeling tools that enable detailed analysis of the flow physics within the combustor are developed as part of a new one-dimensional …
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Numerical Simulation of Mode Transition in a Hydrogen-Fueled Scramjet
… used to simulate dual-mode direct-connect ramjet/scramjet engine flowpath tests conducted in the University of Virginia (UVa) Supersonic Combustion Facility (SCF). The objective was to develop a computational capability within Wind-US to aid current hypersonic research and provide insight to flow …
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Experimental Studies of Injector Array Configurations for Circular Scramjet Combustors
… model representative of state of the art scramjet engine combustion chambers were experimentally studied in a cold-flow (non-combusting) environment to determine their fuel-air mixing behavior under different operating conditions. The experiments were run at nominal freestream Mach numbers …
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A combined cycle approach to dual-mode scramjet design and analysis
… maturation of the supersonic combustion ramjet (scramjet) engine. This hypersonic airbreathing powerplant, which is fundamentally comprised of a high-speed flowpath with no moving parts, belies its structural simplicity with the attendance of incredibly rich fluid and flame dynamics that govern …
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Mixing and sustained combustion in a cavity flameholder for scramjet propulsion
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-04-06 without embargo terms
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Large eddy simulation of supersonic combustion with application to scramjet engines
… The target application of this research is the scramjet engine, a propulsion system of great promise for efficient hypersonic flight. In order to conduct this work a new highly parallelised code, PULSAR, is developed. PULSAR is capable of simulating complex chemistry combustion in highly …
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Variable Geometry Scramjet Combustor Cavity Multi-Dimensional Treatise for Performance Analysis
The abilities of Scramjets and Ramjets, in their respective operating ranges, are partially bridged by dual-mode Scramjets. The limitations of operation are due to making a static motor that is designed to function in both modes resulting in low and high speed restrictions. This study covers the …
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An implicit algorithm for analysis of an airframe-integrated scramjet propulsion cycle
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1988.
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Conceptual design and preliminary analyses of an Air-Launched Scramjet Test Vehicle
… time service. Supersonic combustion ramjet (scramjet) propulsion will play a key role in the development of these vehicles. Many more steps need to be taken, particularly in propulsion, before a world of hypersonic travel can be fully realized. This thesis presents the research results of the …
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Design and flow characterization of an indraft supersonic wind tunnel for scramjet testing
… and aero-thermo-elastic interactions in scramjet vehicles. An indraft-type tunnel was chosen for its simplicity, low capital investment, and low power requirement. Its main features are large windows for advanced optical flow diagnostics, modular experimental mounting system, cycle time …
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Experimental study of flow choking and inlet unstart in an axisymmetric model scramjet
Made available in DSpace on 2018-09-27T16:28:03Z (GMT). No. of bitstreams: 3 BACCARELLA-DISSERTATION-2018.pdf: 11707373 bytes, checksum: 856182803b3b4bbc32de9773806c5add (MD5) LICENSE.txt: 4215 bytes, checksum: 6aa9b4b4beb7f8c687f2f47db1477e87 (MD5) PROQUEST_LICENSE.txt: 4561 bytes, checksum: …
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A computer based model for the performance analysis of a SCRAMJET propulsion system
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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Performance of a Plasma Torch with Hydrocarbon Feedstocks for Use in Scramjet Combustion
… feasibility of using the torch as an igniter in scramjet applications. Operational characteristics studied included electrical properties, such as arc stability, voltage-current characteristics and start/re-start capabilities, and mechanical properties, such as coking, electrode erosion and …
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