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An Investigation at Mach Numbers 2.98 and 2.18 of Axially Symmetric Free-Jet Diffusion with a Ram-Jet Engine

Description: "An investigation was conducted to determine the effectiveness of a free-jet diffuser in reducing the over-all pressure ratios required to operate a free jet with a large air-breathing engine as a test vehicle. Efficient operation of the free jet was determined with and without the considerations required for producing suitable engine-inlet flow conditions. A minimum operating pressure ration of 5.5 was attained with a ratio of nozzle-exit to engine-inlet area of 1.85" (p. 1).
Date: February 13, 1952
Creator: Hunczak, Henry R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Utilization of external-compression diffusion principle in design of shock-in-rotor supersonic compressor blading

Description: Report presenting the application of the external-compression principle to a cascade of blades in an attempt to achieve a closer approach to isentropic contraction ratios in supersonic compressor blading. Tests of a rotor designed to incorporate the external-compression principle are provided. Results regarding overall performance, performance at design speed and peak efficiency, off-design performance, and some considerations for future designs are provided.
Date: September 11, 1953
Creator: Creagh, John W. R. & Klapproth, John F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Light Diffusion Through High-Speed Turbulent Boundary Layers

Description: Memorandum presenting the optical transmission characteristics of turbulent boundary layers in air on a flat plate with negligible heat transfer measured photometrically for ranges of Mach number from 0.4 to 2.5. The results indicated that the scattering from a collimated beam of white light which penetrates a turbulent boundary layer depends mainly on the integral across the layer of the difference between the free-stream density and the local boundary-layer density.
Date: May 26, 1956
Creator: Stine, Howard A. & Winovich, Warren
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A theoretical and experimental study of boric oxide deposition on a surface immersed in an exhaust gas stream from a jet-engine combustor, including a method of calculating deposition rates on surfaces

Description: Report presenting the deposition rate of boric oxide from a stream containing submicron particles, which was found experimentally to fit a molecular diffusion equation. Results regarding boundary-layer studies, deposition studies, deposition tests, and turbojet engine performance are provided.
Date: October 8, 1957
Creator: Setze, Paul C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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