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Scramjets and shock tunnels—The Queensland experience
Abstract This article reports on the use of a shock tunnel to study the operation of scramjet powered configurations at sub-orbital velocities above 2 km/s. Thrust, as given by a net thrust equation,Expand
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Double diaphragm driven free piston expansion tube
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The Superorbital Expansion Tube concept, experiment and analysis
In response to the need for ground testing facilities for super orbital re-entry research, a small scale facility has been set up at the University of Queensland to demonstrate the SuperorbitalExpand
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A two-stage free-piston driver
TLDR
A two-stage free-piston driver is capable of driving hypervelocity expansion tubes and therefore new facilities of increased size but reduced cost are now possible. Expand
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Chemical recombination in an expansion tube
The note describes the theoretical basis of chemical recombination in an expansion tube which simulates energy, Reynolds number, and stream chemistry at near-orbital velocities. Expansion tubes canExpand
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A review of the use of expansion tubes for creating superorbital flows
As exploration of the solar system continues, and missions routinely require atmospheric flight at superorbital speeds, new engineering challenges arise due to the high total enthalpy of the flow. AnExpand
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Experimental Expansion Tube Study of the Flow over a Toroidal Ballute
An experimental investigation of high-enthalpy flow over a toroidal ballute (balloon/parachute) was conducted in an expansion tube facility. The ballute, proposed for use in a number of futureExpand
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A new shock tube configuration for studying dust-lifting during the initiation of a coal dust explosion
Abstract The traditional defence against propagating coal dust explosions is the application of dry stone dust. This proven and effective safety measure is strictly regulated based on extensiveExpand
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Scramjet Experiments in an Expansion Tunnel: Evaluated Using a Quasi-Steady Analysis Technique
As scramjet engine development moves toward higher and higher speeds, it will be important to continue to ground test complete nose-to-tail configurations at true flight conditions. Above Mach 10,Expand
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