Fluid Flow Analysis Of A Hot Core Hypersonic Wind Tunnel Nozzle Concept
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Author | : John B. Anders |
Publisher | : |
Total Pages | : 36 |
Release | : 1972 |
Genre | : Aerodynamics, Hypersonic |
ISBN | : |
A hypersonic-wind-tunnel nozzle concept which incorporates a hot-core flow surrounded by an annular flow of cold air offers a promising technique for maximizing the model size while minimizing the power required to heat the test core. This capability becomes especially important when providing the true-temperature duplication needed for hypersonic propulsion testing. Several two-dimensional wind-tunnel nozzle configurations that are designed according to this concept are analyzed by using recently developed analytical techniques for prediction of the boundary-layer growth and the mixing between the hot and cold coaxial supersonic airflows. The analyses indicate that introduction of the cold annular flow near the throat results in an unacceptable test core for the nozzle size and stagnation conditions considered because of both mixing and condensation effects. Use of a half-nozzle with a ramp on the flat portion does not appear promising because of the thick boundary layer associated with the extra length. However, the analyses indicate that if the cold annular flow is introduced at the exit of a full two-dimensional nozzle, an acceptable test core will be produced. Predictions of the mixing between the hot and cold supersonic streams for this configuration show that mixing effects from the cold flow do not appreciably penetrate into the hot core for the large downstream distances of interest.
Author | : |
Publisher | : |
Total Pages | : 730 |
Release | : 1975 |
Genre | : |
ISBN | : |
Author | : James T. Van Kuren |
Publisher | : |
Total Pages | : 139 |
Release | : 1974 |
Genre | : |
ISBN | : |
The objective of the study was to obtain information about the flow of chemically reacting air that has been heated in a vortex stabilized, high voltage, direct current arc and expanded to hypersonic speeds in a conical nozzle. The inviscid core of the axisymmetric flow in the supersonic section of the nozzle was theoretically analyzed by the method of characteristics for air in chemical and thermal equilibrium. Impact pressure, mass flux, and heat transfer profiles and nozzle-wall static pressures were obtained. Light emissions from the reacting stream were recorded spectroscopically. (Modified author abstract).
Author | : Ralph C. Tolle |
Publisher | : |
Total Pages | : 274 |
Release | : 1996 |
Genre | : Hypersonic wind tunnels |
ISBN | : |
Author | : United States. Superintendent of Documents |
Publisher | : |
Total Pages | : 1466 |
Release | : 1976 |
Genre | : United States |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 1932 |
Release | : 1972 |
Genre | : Government publications |
ISBN | : |
Author | : Wilbur C. Nelson |
Publisher | : Elsevier |
Total Pages | : 801 |
Release | : 2014-12-02 |
Genre | : Science |
ISBN | : 1483223310 |
The High Temperature Aspects of Hypersonic Flow is a record of the proceedings of the AGARD-NATO Specialists' Meeting, held at the Technical Centre for Experimental Aerodynamics, Rhode-Saint-Genese, Belgium in April 1962. The book contains the papers presented during the meeting that tackled a broad range of topics in the aspects of hypersonic flow. The subjects covered during the meeting include pressure measurements, interference effects, the use of wind tunnels in aircraft development testing, high temperature gas characteristics, boundary layer research, stability and control and the use of rocket vehicles in flight research. Aerospace engineers and aeronautical engineers will find the book invaluable.
Author | : |
Publisher | : |
Total Pages | : 836 |
Release | : 1994 |
Genre | : Aeronautics |
ISBN | : |
Author | : Harris M. Schurmeier |
Publisher | : |
Total Pages | : 304 |
Release | : 1959 |
Genre | : Hypersonic wind tunnels |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 542 |
Release | : 1972 |
Genre | : Mechanics, Applied |
ISBN | : |