Resource Type
Collection
Technical Report Archive and Image Library
266
National Advisory Committee for Aeronautics Collection
159
Office of Scientific & Technical Information Technical Reports
118
TRAIL Microcard Collection
82
Texas Attorney General Opinions
62
Boy and Girl Scout Annual Reports
2
Congressional Research Service Reports
1
Serial/Series Title
NACA Research Memorandums
153
Atomic Energy Commission Reports
39
Hanford Works Reports
26
HW (Series)
21
Oak Ridge National Laboratory Reports
16
University of California Radiation Laboratory Reports
16
ORNL (Series)
10
Report (U.S. Atomic Energy Commission)
8
NACA Technical Reports
6
UCRL (Series)
6
48 More
Country
449 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
449
next
Effects of inlet icing on performance of axial-flow turbojet engine in natural icing conditions
A flight investigation in natural icing conditions was conducted to determine the effect of inlet ice formations on the performance of axial-flow turbojet engines. The results are presented for icing conditions ranging from a liquid-water content of 0.1 to 0.9 gram per cubic meter and water-droplet size from 10 to 27 microns at ambient-air temperature from 13 to 26 degrees F. The data show time histories of jet thrust, air flow, tail-pipe temperature, compressor efficiency, and icing parameters for each icing encounter. The effect of inlet-guide-vane icing was isolated and shown to account for approximately one-half the total reduction in performance caused by inlet icing.
Date:
May 25, 1950
Creator:
Acker, Loren W. & Kleinknecht, Kenneth S.
Object Type:
Report
System:
The UNT Digital Library
Atmospheric Contamination Associated with Inert-Gas-Shielded, Consumable Electrode Welding
Apparent excessive concentrations of atmospheric contamination which were reported to be associated with an inert-gas-shielded consumable electrode arc wielding operation were studied to evaluate the potential health hazards. A study was made of the concentrations of metal fume and gaseous products of the operation as well as the spectrum of ultraviolet radiation. Recommendations for necessary controls were made.
Date:
July 25, 1955
Creator:
Adley, F. E. & Gill, W. E.
Object Type:
Report
System:
The UNT Digital Library
Army Gas-Cooled Reactor Systems Program Monthly Progress Report: April 1959
Abstract: This monthly progress report covers the activities of the Army Gas-Cooled Reactor System Program for April 1959. The program includes a water-moderated heterogeneous reactor (Gas-Cooled Reactor Experiment I), a graphite-moderated homogeneous reactor (Gas-Cooled Reactor Experiment II), a mobile gas-cooled reactor (ML-1), and the coordination of the Gas Turbine Test Facility. [It reports] the progress of each project, the associated tests and data evaluation, the applicable design criteria, and the fabrication of reactor components" (p. 1).
Date:
May 25, 1959
Creator:
Aerojet-General Corporation
Object Type:
Report
System:
The UNT Digital Library
THE EFFECT OF PLANT THERMAL EFFICIENCY ON THE COST OF NUCLEAR POWER
Nuclear power cost is plotted versus thermal efficiency. The relationship is not limited to any particular reactor type and is applicable for any reactor system where steam is the working fiuid for the turbogenerator. (T- R.H-)
Date:
July 25, 1958
Creator:
Albrecht, W.L.
Object Type:
Report
System:
The UNT Digital Library
THE DIFFUSION OF HYDROGEN IN BETA ZIRCONIUM
Diffusion coefficients for hydrogen in beta zirconium were determined from permeation rates in the range 650 to 850 deg C. Both the steady-state method, which is dependent upon the hydrogen concentration, and the time-lag method, which is independent of hydrogen concentration, were employed to obtain diffusion data. Zirconium disks, 0.03 to 0.1 cm thick and varying in hydrogen concentration from 9 to 33 at.%, were used to measure permeation rates. The diffusion coefficients determined by the steady-state and time-lag methods on samples of differing thickness were in agreement. It was concluded that the permeation process was diffusion controlled. The diffusion coefficients were found to be independent of concentration and can be expressed by D = 6.14 x 10/ sup 4/ exp (--45,900/RT). (auth)
Date:
August 25, 1959
Creator:
Albrecht, William M. & Goode, W. Douglas, Jr.
Object Type:
Report
System:
The UNT Digital Library
Brief Review of Heat Transfer Problems Encountered in the Production of Magnetic Fields
The design of internally cooled electrical coils for the production of high intensity magnetic fields presents many new aspects and combinations of the familiar modes of heat transfer. However, the customary methodology appears to be sufficient for preliminary analysis and understanding of those problems. This methodology comprises the derivation of a qualitative, approximate equation expressing the relative performance of the various parts of a system, followed by an examination of this equation in order to locate the limiting features of the system. These features are then investigated by more powerful methods, which in turn provide guidance for development research in the laboratory. (auth)
Date:
May 25, 1959
Creator:
Alexander, L G
Object Type:
Report
System:
The UNT Digital Library
Brief Review of Heat Transfer Problems Encountered in the Production of Magnetic Fields
The design of internally cooled electrical coils for the production of high frequency intensity magnetic fields presents many new aspects and combinations of the familiar modes of heat transfer. However, the customary methodology appears to be sufficient for preliminary analysis and understanding of those problems. This methodology comprises the derivation of a qualitative, approximate equation expressing the relative performance of the various parts of a system, followed by an examination of this equation in order to locate the limiting features of the system. These features are then investigated by more powerful methods, which in turn provide guidance for development research in the laboratory.
Date:
May 25, 1959
Creator:
Alexander, L. G.
Object Type:
Report
System:
The UNT Digital Library
Experimental Static Aerodynamic Forces and Moments at Low Speed on a Missile Model During Simulated Launching From the 25-Percent-Semispan and Wing-Tip Location of a 45 Degree Sweptback Wing-Fuselage Combination
Report presenting an investigation at low speed in the 300 mph tunnel to determine the static aerodynamic forces and moments on a missile model during simulated launching from 25-percent-semispan and wing-tip locations of a wing-fuselage combination. Results regarding the differences in location and effects induced by the fuselage are provided.
Date:
May 25, 1955
Creator:
Alford, William J., Jr.; Silvers, H. Norman & King, Thomas J., Jr.
Object Type:
Report
System:
The UNT Digital Library
A Study of the Motion and Aerodynamic Heating of Missiles Entering the Earth's Atmosphere at High Supersonic Speeds
From Summary: "A simplified analysis is made of the velocity and deceleration history of missiles entering the earth's atmosphere at high supersonic speeds. It is found that, in general, the gravity force is negligible compared to the aerodynamic drag force and, hence, that the trajectory is essentially a straight line. A constant drag coefficient and an exponential variation of density with altitude are assumed and generalized curves for the variation of missile speed and deceleration with altitude are obtained. A curious finding is that the maximum deceleration is independent of physical characteristics of a missile (e.g., mass, size, and drag coefficient) and is determined only by entry speed and flight-path angle, provided this deceleration occurs before impact. This provision is satisfied by missiles presently of more usual interest."
Date:
August 25, 1953
Creator:
Allen, H. Julian & Eggers, A. J., Jr.
Object Type:
Report
System:
The UNT Digital Library
Flight measurements of the low-speed characteristics of a 35 degree swept-wing airplane with blowing-type boundary-layer control in the trailing-edge flaps
Report presenting tests to determine the flight characteristics of an F-86 airplane equipped with a blowing-type boundary-layer-control installation on the trailing-edge flaps. The effectiveness of the flap was determined in conjunction with slatted leading edges and an inflatable rubber boot on the leading edge. Measurements were made of lift, drag, flow requirements, and computations for take-off, climb, and landing.
Date:
October 25, 1956
Creator:
Anderson, Seth B.; Quigley, Hervey C. & Innis, Robert C.
Object Type:
Report
System:
The UNT Digital Library
Neutron Remote Area Monitoring Systems
The following report records measurements and evaluations of fast neutron levels in remote areas monitored by personnel.
Date:
April 25, 1958
Creator:
Appleby, Charles W.
Object Type:
Report
System:
The UNT Digital Library
Description and Some Safeguard Aspects of Proposed Developmental Fast Neutron Breeder Reactor
Report that generally describes sodium cooled fast reactors, the features and facilities of such a reactor proposed by Atomic Power Development Associates, and then its safety and siting considerations.
Date:
July 25, 1955
Creator:
Atomic Power Development Associates
Object Type:
Report
System:
The UNT Digital Library
Liquid Metal Fuel Reactor Experiment Annual Technical Report: 1958
Annual report of the Liquid Metal Fuel Reactor Experiment describing progress during calendar year 1958 and as well as an evaluation of progress and plans for future work.
Date:
March 25, 1959
Creator:
Babcock & Wilcox Company
Object Type:
Report
System:
The UNT Digital Library
N. S. Savannah Fuel Design and Development Program: Fuel Rod Vibration (Preliminary Report)
This is a preliminary report on the investigation of the N.S. Savannah replacement fuel rod vibration amplitude when excited by water flowing parallel to the axis of the fuel rod. Methods of calculating the fuel rod frequency in air were verified by experiment. Work is continuing to establish the validity of methods of calculating natural frequencies in water and to confirm the correlation of flow induced vibration amplitude found in reference (1).
Date:
September 25, 1959
Creator:
Bailey, J. A. & Shields, C. M.
Object Type:
Report
System:
The UNT Digital Library
Removal of ruptured slug from tube No. 2169-B
The 105-B Pile which was shut down on July 18, 1951 to permit removal of a ruptured uranium slug from tube No. 2169-B. The rupture was detected from effluent water monitor evidence and a survey of rear face pigtails. Removal was accomplished with the pneumatic charging machine using only normal pushing force.
Date:
July 25, 1951
Creator:
Baker, J. T.
Object Type:
Report
System:
The UNT Digital Library
Static Corrosion Tests of Fabrication Material for D-12 Waste Evaporator
Three types of stainless steel (309 SCB, Carpenter 20, 304-L) were exposed to both the liquid and vapor phase of each of three types of solutions. The time of exposure totaled ten days during which the specimens were cleaned and weighed periodically. The three synthetic D-12 waste solutions contained respectively chrome-high chloride, chrome-low chloride and high chloride sans chromium. The solutions were renewed at each weighing.
Date:
June 25, 1953
Creator:
Barnes, R. G.
Object Type:
Report
System:
The UNT Digital Library
Evaluation of End- and Radial-Burning Solid Fuels in Ram Jets Mounted in a Free Jet at Mach Numbers of 2.0, 2.2, and 2.3
Report presenting testing of two types of solid fuels in a 6.5-inch-diameter ram-jet engine mounted in a free supersonic jet at several Mach numbers. Results regarding radial-burning fuel, end-burning fuel, and a comparison of the two are provided. Unlike in previous testing, no fuel breakup was noted due to recently developed molding techniques.
Date:
November 25, 1952
Creator:
Bartlett, Walter A., Jr.
Object Type:
Report
System:
The UNT Digital Library
Flight Test of an End-Burning Solid-Fuel Ramjet
Report presenting a flight investigation of a rocket-launched ram-jet engine incorporating an end-burning solid fuel. Results regarding acceleration, altitude, booster separation, survival time of booster adapter, and air specific impulse are provided.
Date:
March 25, 1954
Creator:
Bartlett, Walter A., Jr.
Object Type:
Report
System:
The UNT Digital Library
Investigation of Stresses Due to Thermal Gradients in Typical Aircraft Structures
Memorandum presenting an investigation of a series of five 75S-T6 aluminum-alloy elementary skin and spar-cap combinations with skin varying from 0.051 to 0.500 inch in thickness to determine the temperature and stress gradients resulting from the application of heat to the surface. The data are presented in the form of tables of the measured temperatures and stresses calculated from the measured strains.
Date:
January 25, 1952
Creator:
Barzelay, Martin E. & Boison, James C.
Object Type:
Report
System:
The UNT Digital Library
The Path of Carbon in Photosynthesis VIII. The Role of MalicAcid
Malonate has been found to inhibit the formation of malic acid during short periods of photosynthesis with radioactive carbon dioxide. This result, together with studies which show the photosynthetic cycle to be operating normally at the same time, indicates that malic acid is not an intermediate in photosynthesis but is probably closely related to some intermediate of the cycle. Absence of labeled succinic and fumaric acids in these experiments, in addition to the failure of malonate to inhibit photosynthesis, precludes the participation of these acids as intermediates in photosynthesis.
Date:
January 25, 1950
Creator:
Bassham, James A.; Benson, Andrew A. & Calvin, Melvin
Object Type:
Report
System:
The UNT Digital Library
High Energy Fission and Spallation of Uranium
From introduction: "This report is an attempt to examine, semiquantitavely, the way the competition between neutron emission and fission varies for heavy nuclei as a function of nuclear type and excitation energy. Many of the ideas herein are the results of discussions with R. H. Goeckermann and W. Heckrotte of the University of California Radiation Laboratory."
Date:
February 25, 1954
Creator:
Batzel, Roger Elwood
Object Type:
Report
System:
The UNT Digital Library
Progress Report on AEC Contract on Research and Development Program on Scintillation Crystals: Period 1 January 1956 to 1 April 1956
From Abstract: "This report covers the preliminary literature survey and the screening of activated cesium iodide and several alkali halides to qualitatively determine their luminerscence. The report also includes a proposal of the future work and a proposed budget for the 1957 fiscal year."
Date:
April 25, 1956
Creator:
Beadle, Robert
Object Type:
Report
System:
The UNT Digital Library
An Experimental Determination of Fission Product Heating After Shutdown of the Low Intensity Training Reactor
Technical report containing the general arrangement of the Low Intensity Training Reactor and outcomes of experiments that have been performed in the reactor to measure the rate of fission product heat dissipation from the fuel pieces after loss of water. [From Summary, Introduction]
Date:
September 25, 1951
Creator:
Beall, S. E.
Object Type:
Report
System:
The UNT Digital Library
Wind-Tunnel Data on the Longitudinal and Lateral-Directional Rotary Derivatives of a Straight-Wing, Research Airplane Configuration at Mach Numbers From 2.5 to 3.5
Memorandum presenting the results of wind-tunnel oscillation tests to measure the rotary derivatives of a research airplane configuration at supersonic speeds. Measurements were made of the damping in yaw, pitch, and roll, the static longitudinal and directional stability derivatives, the effective-dihedral derivative, the rolling moment due to yawing, and the yawing moment due to rolling. The configuration was found to be statistically stable throughout the Mach number range, although its stability was becoming marginal at high angles of attack at Mach number 3.5.
Date:
March 25, 1958
Creator:
Beam, Benjamin H. & Endicott, Kenneth C.
Object Type:
Report
System:
The UNT Digital Library