Collection
Technical Report Archive and Image Library
1,108
Office of Scientific & Technical Information Technical Reports
636
National Advisory Committee for Aeronautics Collection
597
TRAIL Microcard Collection
281
Texas Attorney General Opinions
189
Texas State Publications
24
Government Documents A to Z Digitization Project
16
USDA Farmers' Bulletins
8
Advisory Commission on Intergovernmental Relations
3
Environmental Policy Collection
2
1 More
Serial/Series Title
NACA Research Memorandums
360
NACA Technical Notes
194
Atomic Energy Commission Reports
149
United States Geological Survey Reports
133
Trace elements investigations report
89
Oak Ridge National Laboratory Reports
74
Hanford Works Reports
66
HW (Series)
49
University of California Radiation Laboratory Reports
43
CF (Series)
29
88 More
States
1,977 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
1,977
next
Analysis of thrust augmentation of turbojet engines by water injection at compressor inlet including charts for calculating compression processes with water injection
From Summary: "Curves are presented that show the theoretical performance of the augmentation method for various amounts of water injected and the effects of varying flight Mach number, altitude, ambient-air temperature, ambient relative humidity, compressor pressure ratio, and inlet-diffuser efficiency. Numerical examples, illustrating the use of the psychrometric chart and the Mollier diagram in calculating both compressor-inlet and compressor-outlet conditions when water is injected at the compressor inlet, are presented."
Date:
June 1, 1950
Creator:
Wilcox, E. Clinton & Trout, Arthur M.
Object Type:
Report
System:
The UNT Digital Library
Analytical Method for Determining Transmission and Absorption of Time-Dependent Radiation Through Thick Absorbers 3: Absorber With Radioactive Daughter Products
Report presenting a theoretical treatment of absorption problems that considers the following cases: radiation is normal to an absorber with plane parallel surfaces, radiations are of several polyenergetic types, induced radioactive isotopes decay to stable atoms in multistep decay processes, and radiations from the absorber affect the time-dependency of the source activity. Radiation from intermediate isotopes can become more dangerous than the original activity, so the entire range of radiations must be accounted for.
Date:
June 1950
Creator:
Allen, G.
Object Type:
Report
System:
The UNT Digital Library
Chemistry Division, Section C-I, Summary Report for January, February and March 1950
Information is presented in threc main sections: nuclear and radiochemistry. physical and organic chemistry, and process chemistry. Included is an investigation of naturally occurring Pu for isotopes other than Pu/sup 239/ , an examination of Mallinckrodt wastes for Ac/sup 227/ the half life of Pa/sup 240/ the cross section of Np /sup 237/ and a study of Np isomers, studies of various Tc and Re compounds, coincidence of interference in a pulse analyzer, absorption of neutrons in a sphere. separation of tritium and hydrogen, spectrophotometric studies of Pa, studies of salt-mixed solvent systems. spectra of ferric complexes, separation of Pu and Np. oxidation of Np(IV by Fe(III). magnetic susceptibilities of actinic compounds, Np(V) compounds. thermal decomposition of UO/sub 3/, physical properties of metal chloridephosphorus oxychloride systems, a continuous chromatographic adsorption method, fluoride volatility separations, fluorination of Th, Zr. Al. and Zr- U alloys, electrolysis of BrF/sub 3/ solutions, decontamination studies including U- Te separations, Pa volatility experiments, extraction of ionium from Mallinckrodt raffinate, and isolation of Pa from the ionium waste stream. (J.R.D.)
Date:
June 1, 1950
Creator:
Osborne, D. W.
Object Type:
Report
System:
The UNT Digital Library
CHEMISTRY DIVISION, SECTION C-I SUMMARY REPORT FOR JANUARY, FEBRUARY, AND MARCH 1950
None
Date:
June 1, 1950
Creator:
Osborne, D.W. ed.
Object Type:
Report
System:
The UNT Digital Library
Comparison between theory and experiment for wings at supersonic speeds
Report presenting a critical comparison between experimental and theoretical results for the aerodynamic characteristics of wings at supersonic flight speeds. The lift, pitching moment, and drag characteristics of several families of wings of varying plan form and section in the wind tunnel and compared with values predicted by the three-dimensional linear theory.
Date:
June 1950
Creator:
Vincenti, Walter G.
Object Type:
Report
System:
The UNT Digital Library
Conservation farming in the Slope-Hettinger Soil Conservation District, North Dakota.
Reports the results of a soil conservation survey and makes the case for increased conservation efforts. Provides information on identifying land types and suggests simple methods of soil conservation.
Date:
June 1950
Creator:
Slope-Hettinger Soil Conservation District (North Dakota)
Object Type:
Book
System:
The UNT Digital Library
A determination of the laminar-, transitional-, and turbulent-boundary-layer temperature-recovery factors on a flat plate in supersonic flow
Report presenting wind-tunnel testing to determine the temperature-recovery factors for laminar, transitional, and turbulent boundary layers on a flat plate.
Date:
June 1950
Creator:
Stalder, Jackson R.; Rubesin, Morris W. & Tendeland, Thorval
Object Type:
Report
System:
The UNT Digital Library
Effect of Humidity on Performance of Turbojet Engines
Report presenting an experimental and analytical investigation to determine the effect of humidity on turbojet-engine performance. The humidity effect was found to be very small with the magnitude depending on the basis of comparison. Results regarding the calculated humidity correction factors, experimental effect of humidity of engine performance, and variation of saturation specific humidity with altitude are provided.
Date:
June 1950
Creator:
Samuels, John C. & Gale, B. M.
Object Type:
Report
System:
The UNT Digital Library
Exact Solutions of Equations of Gas Dynamics
This document presents equations for the two-dimensional stationary problem of gas dynamics, and uses them to derive other equations, including equations for vorticity.
Date:
June 1950
Creator:
Kiebel, I. A.
Object Type:
Report
System:
The UNT Digital Library
Frequency response of positive-displacement variable stroke fuel pump
From Summary: "The dynamic characteristics of an axial-piston, variable-stroke, jet-engine fuel pump were experimentally determined by frequency-response tests. It was found that the pump can be approximated by a first-order linear system with an average time constant of 0.04 second. The order of magnitude of the lag of the pump is negligible compared with current jet engines. It was also established that such a pump may be used for obtaining sinusoidal fuel pressures of variable frequency and amplitude."
Date:
June 1950
Creator:
Shames, Harold; Himmel, Seymour C. & Blivas, Darnold
Object Type:
Report
System:
The UNT Digital Library
General method for computation of equilibrium composition and temperature of chemical reactions
Report presenting an approximation process that can be used to determine both composition and temperature resulting from a chemical reaction. It is suitable for use with any set of reactants over the complete range of mixture ratios as long as the products of reaction are ideal gases.
Date:
June 1950
Creator:
Huff, Vearl N. & Morrell, Virginia E.
Object Type:
Report
System:
The UNT Digital Library
General Solution of Prandtl's Boundary-Layer Equation
A method is described by means of which the laminar friction layer at a wall with arbitrary pressure distribution may be calculated from Prandtl's boundary-layer equations.
Date:
June 1950
Creator:
Mangler, W.
Object Type:
Report
System:
The UNT Digital Library
An Improved Fluorimeter for the Determination of Uranium in Fluoride Melts
Abstract: The Model R fluorimeter has been modified to increase its stability and sensitivity. The new instrument is about ten times as sensitive as the original fluorimeter, but it can also be employed conveniently at a sensitivity level comparable to or less than that of the Model R fluorimeter.
Date:
June 1950
Creator:
Fletcher, Mary H. & May, Irving
Object Type:
Report
System:
The UNT Digital Library
Improvements in Methods for Preparing Thin Sections of Rock
Report issued by the U.S. Bureau of Mines on the importance and instructions for preparing thin sections of rock for microscopic examination. Proper instructions and methods for preparation of thin sections are presented. The report includes photographs.
Date:
June 1950
Creator:
Gibbs, Harold L. & Evans, LaMar G.
Object Type:
Report
System:
The UNT Digital Library
Insurance for farmers : fire, windstorm, crop-hail, liability and life.
Describes risks that farmers face, and the different types of insurance that farmers should consider. Includes a check list of important insurance related questions.
Date:
June 1950
Creator:
Botts, Ralph R. (Ralph Rudolph), 1906-
Object Type:
Book
System:
The UNT Digital Library
Interferometer corrections and measurements of laminar boundary layers in supersonic stream
Report presenting an investigation of the laminar boundary layer on a flat plate in a supersonic stream by means of a Zehnder-Mach interferometer and a total-pressure probe. Results regarding the velocity and density profiles, skin friction, and recovery factor are provided.
Date:
June 1950
Creator:
Blue, Robert E.
Object Type:
Report
System:
The UNT Digital Library
Investigation of a NACA high-speed optical torquemeter
Report presenting a performance investigation of an optical torquemeter, which has an indicating system that requires no physical connection to the torsion shaft. Dynamic tests of the torquemeter were made over a range of shaft speeds and torque loads. Results regarding the torsion-shaft static calibration, dynamic operation, and practicability of the instrument are provided.
Date:
June 1950
Creator:
Rebeske, John J., Jr.
Object Type:
Report
System:
The UNT Digital Library
Investigation of First Stage of Two-Stage Turbine Designed for Free-Vortex Flow
Note presenting an experimental investigation of the first stage of a two-stage turbine designed for free-vortex flow. The results of the investigation showed that highest adiabatic efficiency was attained when the turbine was operating near the design total-pressure ratio. Results regarding power and efficiency, weight rate of gas flow through the turbine, weight-flow distribution at stator-cascade outlets, stator and rotor flow angles at mean radii, radial distribution of flow angle, radial distribution of the rotor-outlet flow angle, radial distribution of the total pressures at the stator-cascade outlet, and radial distribution of rotor-outlet pressure are provided.
Date:
June 1950
Creator:
Englert, G. W. & Ross, A. O.
Object Type:
Report
System:
The UNT Digital Library
An Investigation of the Effect of Tetraethyl Lead and Ethyl Nitrite on the Autoignition Characteristics of Isooctane and Triptane
Report presenting an investigation to study the effect of tetraethyl lead, a knock inhibitor, on isooctane. A brief study of ethyl nitrate was also carried out, which demonstrated that it decreased both the delay and critical explosion pressure. Several series of tests were carried out involving different combinations of lead and fuel-air ratio.
Date:
June 1950
Creator:
Jovellanos, J. U.; Taylor, E. S.; Taylor, C. F. & Leary, W. A.
Object Type:
Report
System:
The UNT Digital Library
Large-scale flight measurements of zero-lift drag at Mach numbers form 0.86 to 1.5 of a wing-body combination having a 60 degree triangular wing with NACA 65A003 sections
Report presenting flight testing at high-subsonic and supersonic speeds at high Reynolds numbers to determine the zero-lift drag of a fin-stabilized body and a wing-body combination. The body was parabolic in profile, had a fineness ratio of 10, and a ratio of body frontal area to wing area to 0.306.
Date:
June 1, 1950
Creator:
Nelson, Robert L.
Object Type:
Report
System:
The UNT Digital Library
Linearized Supersonic Axially Symmetric Flow About Open-Nosed Bodies Obtained by Use of Stream Function
"The use of Stokes' stream function for axially symmetric problems in linearized supersonic flow is discussed. The computation of streamlines away from the body is shown to be facilitated by solving the stream-function problem rather than the potential problem. Use is made of the stream function throughout this report" (p. 1).
Date:
June 1950
Creator:
Moore, Franklin
Object Type:
Report
System:
The UNT Digital Library
Low-Speed Investigation of Deflectable Wing-Tip Elevators on a Low-Aspect-Ratio Untapered 45 Degree Sweptback Semispan Wing With and Without an End Plate
Report presenting an investigation to determine the longitudinal control characteristics of deflectable wing-tip elevators on a low-aspect-ratio, untapered, 45 degree sweptback semispan wing. The elevators had triangular and parallelogrammic plan forms and flat-plate profiles. Results include the elevator effectiveness and comparison of the elevator effectiveness of deflectable wing-tip controls and trailing-edge flap-type controls.
Date:
June 1, 1950
Creator:
Fischel, Jack & O'Hare, William M.
Object Type:
Report
System:
The UNT Digital Library
Modifications to Tracerlab Automatic Sample Changer
A report regarding modifications to the Tracerlab Automatic Sample Changer
Date:
June 1950
Creator:
Flanagan, F. J.; Nelson, J. M. & Warr, J. J.
Object Type:
Report
System:
The UNT Digital Library
National Motor-Gasoline Survey: Winter, 1949-50
Report issued by the U.S. Bureau of Mines on the motor fuel sold in the U. S. during the winter of 1949-1950. Properties and trend characteristics of the fuel sold are presented. This report includes tables, graphs, and a map.
Date:
June 1950
Creator:
Blade, O. C.
Object Type:
Report
System:
The UNT Digital Library