The Sonic Throat Method and Real Gas One-dimensional Flow

The Sonic Throat Method and Real Gas One-dimensional Flow
Author: Richard L. Humphrey
Publisher:
Total Pages: 52
Release: 1971
Genre: Hypersonic wind tunnels
ISBN:
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The one-dimensional flow equation for mass flow through the throat of a supersonic nozzle has been modified for use with real gas values of gamma and compressibility. Curve fits for gamma and Z and a simple iteration scheme have been developed for use with air and nitrogen over a temperature range of 300 to 6000 deg. K and a pressure of 10 to 100 atm. With this approach the sonic throat method can be used with the most recent gas tables to determine high temperature wind tunnel supply temperatures or enthalpies. (Author).

Hypersonic Aerothermodynamics

Hypersonic Aerothermodynamics
Author: John J. Bertin
Publisher: AIAA
Total Pages: 644
Release: 1994
Genre: Science
ISBN: 9781563470363
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A modern treatment of hypersonic aerothermodynamics for students, engineers, scientists, and program managers involved in the study and application of hypersonic flight. It assumes an understanding of the basic principles of fluid mechanics, thermodynamics, compressible flow, and heat transfer. Ten chapters address: general characterization of hypersonic flows; basic equations of motion; defining the aerothermodynamic environment; experimental measurements of hypersonic flows; stagnation-region flowfield; the pressure distribution; the boundary layer and convective heat transfer; aerodynamic forces and moments; viscous interactions; and aerothermodynamics and design considerations. Includes sample exercises and homework problems. Annotation copyright by Book News, Inc., Portland, OR

Development and Operation of an Electrical-resistance Air Heater for the Arl Twenty-inch Hypersonic Wind Tunnel

Development and Operation of an Electrical-resistance Air Heater for the Arl Twenty-inch Hypersonic Wind Tunnel
Author: Richard T. Goddard
Publisher:
Total Pages: 50
Release: 1965
Genre: Hypersonic wind tunnels
ISBN:
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An electrical resistance heater has been designed and fabricated to preheat the air in the 20-inch hypersonic wind tunnel of the Fluid Dynamics Facilities Laboratory located at Wright-Patterson Air Force Base. The heater was designed to heat air to 2800R at mass flow ranges of one-half pound per second to ten pounds per second. Stagnation pressure can be varied between 600 psi to 2500 psi. The report traces the development of the present heater and includes a heat transfer analysis required to design this type of heater. In addition, a comparison is made between experimental and theoretical results. The heater described in the report has been successfully operated for several hundred hours during a three year period. The report presents recommendations that might be made to improve this highly essential component. (Author).

Performance Capability of the NOL Hypersonic Tunnel

Performance Capability of the NOL Hypersonic Tunnel
Author: Frank P. Baltakis
Publisher:
Total Pages: 146
Release: 1968
Genre: Hypersonic wind tunnels
ISBN:
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The report summarizes the performance capability data of the U.S. Naval Ordnance Laboratory's Hypersonic Tunnel. The report includes a brief description of the facility, overall performance capability data, nozzle calibration data, and some nozzle boundary-layer thickness and temperature variation data. The nozzle aerodynamic design method is indicated and its adequacy in the range of the supply and test flow conditions of the Hypersonic Tunnel is briefly discussed. (Author).