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Effect of Fuel Volatility on Performance of Tail-Pipe Burner

Description: Fuels having Reid vapor pressures of 6.3 and 1.0 pounds per square inch were investigated in a tail-pipe burner on an axial-flow-type turbojet engine at a simulated flight Mach number of 0.6 and altitudes from 20,000 to 45,000 feet. With the burner configuration used in this investigation, having a mixing length of only 8 inches between the fuel manifold and the flame holder, the low-vapor-pressure fuel gave lower combustion efficiency at a given tail-pipe fuel-air ratio. Because the exhaust-nozzle area was fixed, the lower efficiency resulted in lower thrust and higher specific fuel consumption. The maximum altitude at which the burner would operate was practically unaffected by the change in fuel volatility.
Date: April 30, 1951
Creator: Barson, Zelmar & Sargent, Arthur F., Jr.
Partner: UNT Libraries Government Documents Department
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Design and performance of an experimental axial-discharge mixed-flow compressor 3: over-all performance of impeller and supersonic-diffuser combination

Description: Report presenting an investigation of an axial-discharge impeller in combination with a 16-vaned supersonic diffuser cascade over a range of flow conditions at equivalent tip speeds varying from 800 to 1600 feet per second. Results regarding the overall performance of the combination, starting of diffuser cascade, use of flow bleedoff to aid starting, radial distribution of flow angle, flow characteristics within diffuser, and efficiency of diffuser cascade are provided.
Date: April 30, 1951
Creator: Wilcox, Ward W. & Robbins, William H.
Partner: UNT Libraries Government Documents Department
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Preliminary evaluation of the air and fuel specific-impulse characteristics of several potential ram-jet fuels 1: octene-1, aluminum, and aluminum - octene-1 slurries

Description: Report presenting a preliminary analytical evaluation of the air and fuel specific-impulse characteristics of octene-1, aluminum, and aluminum-octene-1 slurries. The adiabatic combustion flame temperature, combustion equilibrium-gas composition, air specific impulse, and fuel-weight specific impulse are presented for each fuel. Aluminum-octene-1 slurries were found to offer a means of increasing the limited air specific impulse values available with octene-1 or hydrocarbon-type fuels.
Date: April 30, 1951
Creator: Gammon, Benson E.
Partner: UNT Libraries Government Documents Department
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Lift, Drag, and Pitching Moment of Low-Aspect-Ratio Wings at Subsonic and Supersonic Speeds : Plane Tapered Wing of Aspect Ratio 3.1 with 3-Percent-Thick, Biconvex Section

Description: "A wing-body combination having a plane tapered wing of aspect ratio 3.1 and 3-percent-thick, biconvex sections in streamwise planes has been investigated at both subsonic and supersonic Mach numbers. The lift, drag, and pitching moment of the model are presented for Mach numbers from 0.60 to 0.925 and 1.20 to 1.90 at a Reynolds number of 2.4 million. Results are also presented for Mach numbers from 0.60 to 0.925 and 1.20 to 1.50 at Reynolds numbers of 1.5 million and 3.8 million" (p. 1).
Date: January 30, 1951
Creator: Reese, David E. & Phelps, E. Ray
Partner: UNT Libraries Government Documents Department
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The Use of Suction to Prevent Shock-Induced Separation in a Nozzle

Description: "An investigation was made of the use of suction to prevent shock-induced flow separation in a nozzle formed by a 7.5-percent-thick bump on a wall of a channel. Various transverse and longitudinal suction-slot arrangements and suction through porous surfaces were tested. All these devices were effective in preventing separation, and certain suction-slot arrangements reduced the total power loss, including the power lost in the suction process" (p. 1).
Date: January 30, 1951
Creator: Sterrett, James R.; Dunning, Robert W. & Brevoort, Maurice J.
Partner: UNT Libraries Government Documents Department
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Results of Flight Tests to Determine Drag of Parabolic and Cone-Cylinder Bodies of Very Large Fineness Ratios at Supersonic Speeds

Description: Results of a free-flight investigation at supersonic speeds to determine zero-lift drag of a series of bodies of revolution are presented. Configurations tested included two parabolic bodies with fineness ratios of 17.78 and 24.5 and two 8 degree cone-cylinder bodies with fineness ratios of 17.2 and 21.2. Results of previous tests of similar parabolic bodies but with lower fineness ratios are included in this paper for comparison. All bodies for which data are presented in this paper had a base-to-maximum-diameter ratio of 0.437. Calculated drag coefficients are shown for all bodies for which data are presented. (author).
Date: August 30, 1951
Creator: Welsh, Clement J. & de Moraes, Carlos A.
Partner: UNT Libraries Government Documents Department
open access

Spectrum of turbulence in a contracting stream

Description: The spectrum concept is employed to study the selective effect of a stream contraction on the longitudinal and lateral turbulent velocity fluctuations of the stream. By a consideration of the effect of the stream contraction on a single plane sinusoidal disturbance wave, mathematically not dissimilar to a triply periodic disturbance treated by G. I. Taylor, the effect on the spectrum tensor of the turbulence and hence on the correlation tensor is determined.
Date: August 30, 1951
Creator: Ribner, H. S. & Tucker, M.
Partner: UNT Libraries Government Documents Department
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Application of a channel design method to high-solidity cascades and tests of an impulse cascade with 90 degrees of turning

Description: From introduction: "A technique for application of the channel design methods of reference 11 to the design of high-solidity cascades with prescribed velocity distributions as a function of arc length along the blade-element profiles is presented herein."
Date: November 30, 1951
Creator: Stanitz, John D. & Sheldrake, Leonard J.
Partner: UNT Libraries Government Documents Department
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Hydrodynamic impact of a system with a single elastic mode 2: comparison of experimental force and response with theory

Description: From Summary: "Hydrodynamic impact tests were made on an elastic model approximating a two-mass spring system to determine experimentally the effects of structural flexibility on the hydrodynamic loads encountered during seaplane landing impacts and to correlate the results with theory. A flexible seaplane was represented by a two-mass spring system consisting of a rigid prismatic float connected to a rigid upper mass by an elastic structure. The model had a ratio of sprung mass to hull mass of 0.6 and a natural frequency of 3.0 cycles per second. The tests were conducted in smooth water at fixed trims and included both high and low flight-path angles and a range of velocity. Theoretical and experimental comparisons indicated that the theoretical results agreed well with the experimental results."
Date: January 30, 1951
Creator: Miller, Robert W. & Merten, Kenneth F.
Partner: UNT Libraries Government Documents Department
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Experimental and theoretical studies of area suction for the control of the laminar boundary layer on an NACA 64A010 airfoil

Description: From Summary: "A low-turbulence wind-tunnel investigation was made of an NACA 64A010 airfoil having a porous surface to determine the reduction in section total-drag coefficient that might be obtained at large Reynolds numbers by the use of suction to produce continuous inflow through the surface of the airfoil (area suction). In addition to the experimental investigation, a related theoretical analysis was made to provide a basis of comparison for the test results."
Date: March 30, 1951
Creator: Braslow, Albert L.; Burrows, Dale L.; Tetervin, Neal & Visconti, Fioravante
Partner: UNT Libraries Government Documents Department
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Summary of Results Obtained by Transonic-Bump Method on Effects of Plan Form and Thickness on Lift and Drag Characteristics of Wings at Transonic Speeds

Description: Memorandum presenting a summary of the effects of plan form and thickness on the lift and drag characteristics of wings at transonic speeds. The data was obtained during a transonic research program conducted in the high-speed 7- by 10-foot tunnel by the transonic-bump method. Results regarding lift, drag at zero lift, and drag due to lift are provided.
Date: November 30, 1951
Creator: Polhamus, Edward C.
Partner: UNT Libraries Government Documents Department
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Investigation of the liquid fluorine-liquid diborane propellant combination in a 100-pound-thrust rocket engine

Description: The experimental performance of liquid fluorine and liquid diborane was investigated in a 100-pound-thrust engine at a combustion pressure of 300 pounds per square inch absolute. Methods of handling and transporting liquid fluorine were developed. It was extremely difficult to obtain satisfactory operation because of the high flame speed and high combustion chamber temperatures. The maximum performance obtained was 280 pound seconds per pound, 88 percent of the theoretical maximum. The theoretical performance was recalculated with revised thermodynamic data, indicating a maximum specific impulse of 311 pound seconds per pound as compared with the previously reported value of 323.
Date: November 30, 1951
Creator: Ordin, Paul M.; Douglass, Howard W. & Rowe, William H.
Partner: UNT Libraries Government Documents Department
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Preliminary investigation of the pressure fluctuations in the wakes of two-dimensional wings at low angles of attack

Description: Report presenting a measurement of the magnitudes of pressure fluctuations in the turbulent wakes of restrained two-dimensional airfoils at transonic speeds. Measurements indicated that the total-pressure fluctuations occurred only within the wake. Results regarding the magnitude of pressure oscillation in the wake, effect stream-angle fluctuations in the wake, and frequencies of pressure oscillation on the wing and in the wake are provided.
Date: October 30, 1951
Creator: Sorenson, Robert M.; Wyss, John A. & Kyle, James C.
Partner: UNT Libraries Government Documents Department
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Calculated Aerodynamic Loadings of M, W, and Delta Wings in Incompressible Flow

Description: Report presenting the results of theoretical incompressible-flow calculations of the spanwise lift distributions, lift-curve slopes, spanwise centers of pressure, aerodynamic centers, coefficients of damping in roll, rolling-moment coefficients due to aileron deflection, and induced-drag coefficients of twenty M, W, and delta wings.
Date: August 30, 1951
Creator: Diederich, Franklin W. & Latham, W. Owen
Partner: UNT Libraries Government Documents Department
open access

[News Script: Price Controls]

Description: Script from the WBAP-TV station in Fort Worth, Texas, covering a news story about Doctor Alfred Seelye, the new acting regional director of the Economic Stabilization Agency, holding a news conference.
Date: January 30, 1951
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

[News Script: Grave protest]

Description: Script from the WBAP-TV station in Fort Worth, Texas, covering a news story about a protest at a Dallas cemetery set to be partially converted into a parking lot.
Date: March 30, 1951
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

[News Script: Latin fiesta]

Description: Script from the WBAP-TV station in Fort Worth, Texas, covering a news story about a Latin-themed celebration at the Fort Worth Pan American Round Table State Convention, an international outreach organization.
Date: March 30, 1951
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

[News Script: Red Cross praised]

Description: Script from the WBAP-TV station in Fort Worth, Texas, covering a news story about Red Cross volunteer workers from across Texas meeting in Fort Worth for the first ever state conference of Red Cross volunteers.
Date: March 30, 1951
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

[News Script: Stock show]

Description: Script from the WBAP-TV station in Fort Worth, Texas, covering a news story about the judging of champion steers and other festivities at the Fort Worth Southwestern Exposition and Fat Stock Show.
Date: January 30, 1951
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

[News Script: News briefs]

Description: Script from the WBAP-TV station in Fort Worth, Texas, covering three news stories. The first story is about a new model of large-screened television headed to the Dallas retail market. The second story is about students and faculty at Texas Christian University investigating the discovery of a mysterious stone in Fort Worth that may be a work of prehistoric art. The third story is about the approaching deadline for purchasing 1951 licence plates in Texas.
Date: March 30, 1951
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

[News Script: Winter weather]

Description: Script from the WBAP-TV station in Fort Worth, Texas, covering a news story about severe winter weather in the Dallas-Fort Worth area.
Date: January 30, 1951
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

[News Script: Badminton tourney]

Description: Script from the WBAP-TV station in Fort Worth, Texas, covering a news story about the annual U.S. Badminton Championships in Dallas
Date: March 30, 1951
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

[News Script: Marines sworn in]

Description: Script from the WBAP-TV station in Fort Worth, Texas, covering a news story about a mass enlistment ceremony for the United States Marine Corps in Dallas, with 172 new recruits sworn in.
Date: January 30, 1951
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

[News Script: News briefs one]

Description: Script from the WBAP-TV station in Fort Worth, Texas, covering three news stories. The first story is about auditions for female "usherettes" at musicals held during the state fair. The second story is about two young boys petitioning the Dallas City Council for an investigation into a string of dog poisonings. The third story is about a monkey breaking loose from the Marsalis Park Zoo and taking hours to be recaptured.
Date: May 30, 1951
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
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