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Design considerations for the airframe-integrated scramjet

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TLDR
These studies indicate that the fixed-geometry scramjet module will provide practical levels of thrust performance with low cooling requirements and need particular emphasis in further development work.
Abstract
Research programs at the NASA Langley Research Center on the development of airframe-integrated scramjet concepts (supersonic combustion ramjet) are reviewed briefly. The design and performance of a specific scramjet configuration are examined analytically by use of recently developed and substantiated techniques on boundary-layer development, heat transfer, fuel-air mixing, heat-release rates, and engine-cycle analysis. These studies indicate that the fixed-geometry scramjet module will provide practical levels of thrust performance with low cooling requirements. Areas which need particular emphasis in further development work are the combustor design for low speeds and the integrated nozzle design.

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Scramjet Engines: The First Forty Years

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Proceedings ArticleDOI

Flight Dynamics and Control of Air-Breathing Hypersonic Vehicles: Review and New Directions

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Quasi-One-Dimensional High-Speed Engine Model with Finite-Rate Chemistry

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Proceedings ArticleDOI

Experimental Supersonic Combustion Research at NASA Langley

TL;DR: Experimental supersonic combustion research related to hypersonic airbreathing propulsion has been actively underway at NASA Langley Research Center (LaRC) since the mid-1960's as mentioned in this paper.
Book

Facing the Heat Barrier: A History of Hypersonics

TL;DR: The last of these approached Jupiter at four times the speed of a lunar mission returning to Earth and reached a speed of four times faster than the return of a Moon landing mission as mentioned in this paper.
References
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The air-breathing launch vehicle for earth- orbit shuttle - New technology and development approach

TL;DR: In this paper, the status of the air-breathing HTOL launch vehicle is assessed in light of recent achievements in propulsion and configuration development, concluding that all major or questions of feasibility, particularly in the area of hypersonic propulsion have been answered favorably by the investigations of several small research engines recently completed.
Journal ArticleDOI

The airbreathing launch vehicle for earth orbit shuttle - Performance and operation

TL;DR: In this paper, the authors compared performance, costs and operation with a reusable air breathing launch vehicle for the earth orbit shuttle and a rocket-powered system for the first time, comparing performance, cost and operation of both systems.