Results 211 to 220 of about 146,641 (261)
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AIAA Journal, 1969
I this note we report preliminary work on a modification of the expansion tube. This modification is suggested by our experiences with secondary diaphragm breakage and its effect on flow quality. It appears that diaphragm fragment size significantly affects flow uniformity.
J. H. SPURK, E. J. GION, W. B. STUREK
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I this note we report preliminary work on a modification of the expansion tube. This modification is suggested by our experiences with secondary diaphragm breakage and its effect on flow quality. It appears that diaphragm fragment size significantly affects flow uniformity.
J. H. SPURK, E. J. GION, W. B. STUREK
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2015
Hypersonics research at the University of Queensland (UQ) was set in motion by the arrival of Professor Ray Stalker in 1977. Stalker, the inventor of the free-piston driver [1], soon commenced work on a large free-piston driven reflected shock tunnel (RST), the T4 facility, funded by the Australian Research Council [2]. This facility was a larger scale
Gildfind, David +2 more
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Hypersonics research at the University of Queensland (UQ) was set in motion by the arrival of Professor Ray Stalker in 1977. Stalker, the inventor of the free-piston driver [1], soon commenced work on a large free-piston driven reflected shock tunnel (RST), the T4 facility, funded by the Australian Research Council [2]. This facility was a larger scale
Gildfind, David +2 more
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Chemical recombination in an expansion tube
AIAA Journal, 1994The 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 can satisfy ground-based hypersonic propulsion and aerothermal testing requirements.
Bakos Robert J., Morgan Richard G.
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Effect of Expansion Ratio on Formability in Tube Drawing with Diameter Expansion
2021Conventional tube drawing methods have the disadvantage that thickness reduction in one pass is small. This paper proposed a tube drawing method for overcoming this disadvantage, and the method expands the diameter at the same time of drawing. At first, the tube is flared by pushing the plug into the tube end.
H. Kawaguchi +5 more
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The Superorbital Expansion Tube concept, experiment and analysis
The Aeronautical Journal, 1994AbstractIn 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 Superorbital Expansion Tube concept. This unique device is a free piston driven, triple diaphragm, impulse shock facility which uses the enthalpy multiplication ...
Neely, AJ, Morgan, RG
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Development of X3, a superorbital expansion tube
38th Aerospace Sciences Meeting and Exhibit, 2000This paper reports on the design and construction of the X3 superorbital expansion tube at the Centre for Hypersonics at The University of Queensland. The reasons for developing such facilities, the planned testing program, the principles of operation, and some of the engineering complexities of their construction are discussed.
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Magnetohydrodynamic Drag Force Measurements in an Expansion Tube
2018 Flow Control Conference, 2018The use of a magnetic field to manipulate the shock layer for a re-entry vehicle has been proposed as a possible method for increasing drag of planetary entry vehicles. Whilst the field of magnetohydrodynamics (MHD) is well established, the application of this field to planetary entry vehicles is not well understood. The current state of the literature
Smith, Daniel R. +4 more
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A Hypersonic Nozzle for the X3 Expansion Tube [PDF]
Expansion tubes perform an important role in hypersonic flight research by providing a ground-based testing facility in which scale models can be tested at simulated flight conditions. High enthalpy and high velocity flow conditions are generated via an unsteady expansion process which accelerates test gas to hypersonic conditions.
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Analysis of Tube Expansion by Hydroforming
Transactions of the Korean Society of Mechanical Engineers A, 2002Recently the hydroforming technology has drawn a lot of attention because of its capability to produce high quality and light weight parts. In the present study, the tube expansion - one of the simplest hydroforming processes, has been investigated in order to understand fundamental phenomena such as deformation characteristics and effect of process ...
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Impurity Measurements in the Expansion Tube
1971An assessment is given on the importance of impurities in expansion tube flow, using the results of spectroscopic measurements. The expansion tube is a new type facility which produces high energy, high Mach number flows. It has been used at the Ballistic Research Laboratories for the study of nonequilibrium effects in high temperature gases.
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