Acceleration of high-pressure-ratio single-spool turbojet engine as determined from component performance characteristics 2: effect of compressor interstage air bleed (open access)

Acceleration of high-pressure-ratio single-spool turbojet engine as determined from component performance characteristics 2: effect of compressor interstage air bleed

Report presenting an analytical investigation to determine the effect of compressor interstage air bleed with the use of constant-area bleed ports on the acceleration characteristics of a typical high-pressure-ratio single-spool turbojet engine. Constant-area interstage bleed, properly located, gave smaller acceleration times than variable-area compressor exit bleed. Results regarding acceleration with interstage bleed, acceleration using constant-area interstage bleed in combination with compressor outlet bleed, variable-area interstage bleed, and comparison of acceleration modes are provided.
Date: July 3, 1953
Creator: Rebeske, John J., Jr. & Dugan, James F., Jr.
Object Type: Report
System: The UNT Digital Library
Air Admixture to Exhaust Jets (open access)

Air Admixture to Exhaust Jets

From Introduction: "The problem of thrust increase for jet engines by air mixture to the exhaust jet was introduced into aviation techniques by the suggestions of Melot (ref.1). Due to a too general interpretation of several theoretical investigations of A. Busemann (ref.2), so far no practical use has been made of these suggestions. The following considerations show that, in the case of low-pressure mixing according to Melot's suggestions, probably no thrust increase of technical significance will occur for the flight speeds of interest (however, the low-pressure mixture is highly promising for ground test setups and for special power plants of relatively slow sea and land vehicles."
Date: July 1953
Creator: Sänger, Eugen
Object Type: Report
System: The UNT Digital Library
Air-Water Analogy and the Study of Hydraulic Models (open access)

Air-Water Analogy and the Study of Hydraulic Models

From Summary: "The author first sets forth some observations about the theory of models. Then he established certain general criteria for the construction of dynamically similar models in water and in air, through reference to the perfect fluid equations and to the ones pertaining to viscous flow. It is, in addition, pointed out that there are more cases in which the analogy is possible than is commonly supposed."
Date: July 1953
Creator: Supino, Giulio
Object Type: Report
System: The UNT Digital Library

Airborne radioactivity survey of parts of the North and South Carolina Atlantic Ocean beach

Shows coastal areas of greater-than-average radioactivity.
Date: July 12, 1953
Creator: Meuschke, J. L.; Moxham, Robert Morgan & Bortner, T. E.
Object Type: Map
System: The UNT Digital Library
An Alternate Interpretation of the Results on then p-Meson Decay Electron Spectrum (open access)

An Alternate Interpretation of the Results on then p-Meson Decay Electron Spectrum

We have preliminarily reported the interpretation of our experimental results that the intensity of the spectrum at the maximum energy was zero. But, as reported in the second paper UCRL-1261 we found that the results may also be fitted to a different spectrum with finite intensity at the maximum energy. Quite recently, however, the most probable value for the mass of the p-meson has been revised by two independent groups based on two different experiments.
Date: July 1953
Creator: Sagane, Ryokiche, 1905-1969
Object Type: Report
System: The UNT Digital Library
Altitude Investigation of Several Afterburner Configurations for the J40-WE-8 Turbojet Engine (open access)

Altitude Investigation of Several Afterburner Configurations for the J40-WE-8 Turbojet Engine

"An investigation was conducted in the Lewis altitude wind tunnel to evaluate the performance and operational characteristics of the J40-WE-8 afterburner. A brief program of minor modifications to the flame holder, diffuser, and fuel system was undertaken to improve at a burner-inlet pressure level of 620 pounds per square foot. At this pressure level, modifications to the fuel system resulted in an increase in maximum net thrust from 1500 to 1600 pounds and a reduction in specific fuel consumption in the stoichiometric region from 3.70 to 3.15 pounds of fuel per hour per pound of net thrust" (p. 1).
Date: July 16, 1953
Creator: Conrad, E. William & Campbell, Carl E.
Object Type: Report
System: The UNT Digital Library
AUTO-EDIT (AUTOmatic Information EDITor) (open access)

AUTO-EDIT (AUTOmatic Information EDITor)

None
Date: July 1, 1953
Creator: Bussey, G.R.
Object Type: Report
System: The UNT Digital Library
Behavior of materials under conditions of thermal stress (open access)

Behavior of materials under conditions of thermal stress

Report presenting a review of available information on the behavior of brittle and ductile materials under conditions of thermal stress and thermal shock. A number of practical methods that have been used to minimize the negative effects of thermal stress and shock are provided.
Date: July 1953
Creator: Manson, S. S.
Object Type: Report
System: The UNT Digital Library
Biological and Medical Research, Radiological Physics, and Health Services Divisions Monthly Progress Report: June 1953 (open access)

Biological and Medical Research, Radiological Physics, and Health Services Divisions Monthly Progress Report: June 1953

None
Date: July 1, 1953
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Burning rates of single fuel drops and their application to turbojet combustion process (open access)

Burning rates of single fuel drops and their application to turbojet combustion process

Report presenting burning rates for single isooctane drops suspended in various quiescent oxygen-nitrogen atmospheres at room temperature and pressure. The burning rates were compared with those predicted by a previously developed theory based on a heat- and mass-transfer mechanism and with values predicted by a modification to the theory.
Date: July 16, 1953
Creator: Graves, Charles C.
Object Type: Report
System: The UNT Digital Library
CALCULATED THERMAL CONDUCTIVITIES OF He-Co$sub 2$, He-Ne, AND He-N$sub 2$ MIXTURES (open access)

CALCULATED THERMAL CONDUCTIVITIES OF He-Co$sub 2$, He-Ne, AND He-N$sub 2$ MIXTURES

None
Date: July 20, 1953
Creator: Davidson, J. M.
Object Type: Report
System: The UNT Digital Library
Comparison of effectiveness of convection-, transpiration-, and film-cooling methods with air as coolant (open access)

Comparison of effectiveness of convection-, transpiration-, and film-cooling methods with air as coolant

From Summary: "Various parts of aircraft propulsion engines that are in contact with hot gases often require cooling. Transpiration and film cooling, new methods that supposedly utilize cooling air more effectively than conventional convection cooling, have already been proposed. This report presents material necessary for a comparison of the cooling requirements of these three methods. Correlations that are regarded by the authors as the most reliable today are employed in evaluating each of the cooling processes."
Date: July 9, 1953
Creator: Eckert, E. R. G. & Livingood, John N. B.
Object Type: Report
System: The UNT Digital Library
A correlation of the magnetic susceptibilities of thorium, uranium, and plutonium with crystal structure (open access)

A correlation of the magnetic susceptibilities of thorium, uranium, and plutonium with crystal structure

Report describing potential correlations of magnetic susceptibilities of the elements thorium, uranium, and plutonium with their crystal structures.
Date: July 22, 1953
Creator: Comstock, A. Allen
Object Type: Report
System: The UNT Digital Library
Corrosion of Plutonium Alloys in Nak (open access)

Corrosion of Plutonium Alloys in Nak

A Pu-Al alloy containing 4 at. % Ad showed no attack after exposure to purified NaK for one month at 400 deg C in the absence of any oxide. The same specimen and other Pu alloys, including pure Pu, showed marked deterioration in shorter exposures in the presence of oxide fllms from a welded stainless steel container. Pure U was found to be resistant in the presence of such oxides. (auth)
Date: July 1, 1953
Creator: Hyman, H. H. & Katz, J. J.
Object Type: Report
System: The UNT Digital Library
Corrosion of Plutonium Alloys in NaK (open access)

Corrosion of Plutonium Alloys in NaK

A plutonium-aluminum alloy containing 4 atom per cent aluminum showed no attack after exposure to purified NaK for one month at 400 C in the absence of any oxide. The same specimen and other plutonium alloys, including pure plutonium, showed marked deterioration in shorter exposure in the presence of oxide films from a welded stainless steel container. Pure uranium was resistant even in the presence of such oxides.
Date: July 1953
Creator: Hyman, H. H. & Katz, Joseph J. (Joseph Jacob), 1912-2008
Object Type: Report
System: The UNT Digital Library
The Dependency of Reactivity of Burn-up in Fast Reactors (open access)

The Dependency of Reactivity of Burn-up in Fast Reactors

In fast reactors the poisoning effects of fission products are reduced because of relative low capture cross sections at high energies. In addition, in fluid fuel reactors there is the possibiity of removing them by processing. If plutonium production is of secondary importance to power production, then higher burnup of fuel is possible and dependency of reactivity on burnup becomes a problem of interest. One-group calculations are performed as a first step in understanding the relative effects of the initial breeding ratios, enrichment, and fissin product and heavy isotope concentration.
Date: July 31, 1953
Creator: Sehnert, R. H.
Object Type: Report
System: The UNT Digital Library
DESIGN AND CONSTRUCTION OF NEEDLE THERMOCOUPLES (open access)

DESIGN AND CONSTRUCTION OF NEEDLE THERMOCOUPLES

None
Date: July 15, 1953
Creator: Rauch, W.G.
Object Type: Report
System: The UNT Digital Library
A DIFFERENTIAL DILATOMETER FOR RAPID DETERMINATION OF THERMAL EXPANSION COEFFICIENTS NEAR ROOM TEMPERATURE (open access)

A DIFFERENTIAL DILATOMETER FOR RAPID DETERMINATION OF THERMAL EXPANSION COEFFICIENTS NEAR ROOM TEMPERATURE

None
Date: July 14, 1953
Creator: Mayfield, R.M.
Object Type: Report
System: The UNT Digital Library
Disassembly of the Los Alamos Fast Reactor (open access)

Disassembly of the Los Alamos Fast Reactor

The procedures used in the complete and permanent disassembly of the Los Alamos Fast Reactor are described.
Date: July 1953
Creator: Jurney, Edward Thornton, 1921-; Arnold, G. P.; Corpieri, E. F.; Leachman, R. B.; Pierce, E. H.; Montoya, J. et al.
Object Type: Report
System: The UNT Digital Library
DISSOLUTION OF URANIUM OXIDE ARISING FROM SLUG FAILURE (open access)

DISSOLUTION OF URANIUM OXIDE ARISING FROM SLUG FAILURE

None
Date: July 1, 1953
Creator: Johnston, F.J.; Wills, P.E. & Katz, J.J.
Object Type: Report
System: The UNT Digital Library
Dissolution of Uranium Oxide Arising From Slug Failure (open access)

Dissolution of Uranium Oxide Arising From Slug Failure

The purpose of this work was to study reagents which might be effective in dissolving uranium oxide produced during slug failures in water-cooled reactor systems. An aspect of this problem which has subsequently become of primary importance is the solubility or transportability of the oxide in pure water.
Date: July 1953
Creator: Johnston, F. J.; Wills, P. E. & Katz, Joseph J. (Joseph Jacob), 1912-2008
Object Type: Report
System: The UNT Digital Library
The Ductility of Brazed Stainless Steel Joints (open access)

The Ductility of Brazed Stainless Steel Joints

Abstract: "The ductility of Type 310 stainless steel T-joints brazed with GE-62 brazing alloy was measured at room temperatures 1200, 1650, and 1800 F. The measure of ductility was taken as the plastic axial strain required to crack braze fillets in T-section tensile specimens. At elevated temperatures, the ductility of as-brazed joints approximated that of the stainless steel, but at room temperature the brazed joints had only one-tenth the ductility of the base metal. Annealing for 16 hr at 1800 F in air was found to triple the room-temperature ductility of the brazed joint."
Date: July 8, 1953
Creator: Saller, Henry A.; Stacy, J. T. & Eddy, N. S.
Object Type: Report
System: The UNT Digital Library
Effect of Certain Combinations of Wall Contouring and Design Exit Velocity Distribution on Prediction of Turbine-Nozzle Mass Flow (open access)

Effect of Certain Combinations of Wall Contouring and Design Exit Velocity Distribution on Prediction of Turbine-Nozzle Mass Flow

Report presenting an investigation to determine if certain combinations of design nozzle-exit velocity distribution and wall contouring can alter the three-dimensional flow characteristics such that nozzle mass flow cannot be predicted by ordinary two-dimensional design techniques. Four nozzle configurations with different wall contours and velocity distributions were tested. Results regarding the comparison of analytical and experimental values of mass flow are provided.
Date: July 10, 1953
Creator: Stewart, Warner L.; Whitney, Warren J. & Heaton, Thomas R.
Object Type: Report
System: The UNT Digital Library
Effect of diffuser design, diffuser-exit velocity profile and fuel distribution on altitude performance of several afterburner configurations (open access)

Effect of diffuser design, diffuser-exit velocity profile and fuel distribution on altitude performance of several afterburner configurations

"An investigation was conducted in the NACA Lewis altitude wind tunnel to improve the altitude performance and operational characteristics of an afterburner primarily by modifying the diffuser-exit velocity profile by changes in diffuser design and by changing the fuel distribution and the flame holder. Twenty configurations, consisting of combinations of six diffuser geometries, six flame-holder types, and twelve fuel systems, were investigated. Data were obtained over a range of afterburner fuel-air ratios at diffuser-inlet total pressures from 2750 to 620 pounds per square foot" (p. 1).
Date: July 9, 1953
Creator: Conrad, E. William; Schultz, Frederick W. & Usow, Karl H.
Object Type: Report
System: The UNT Digital Library