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NACA Research Memorandums
15
Atomic Energy Commission Reports
7
BMI (Series)
3
Battelle Memorial Institute Reports
3
NACA Technical Reports
3
University of California Radiation Laboratory Reports
3
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2
Brookhaven National Laboratory Reports
2
Hanford Works Reports
2
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Calculation of Shielding for Mark II Accelerator
The proper roof thickness to correspond with a given side wall thickness has been estimated fro experience with the 184 feet cyclotron, which has indicated that a roof of about 1 1/2 feet should accompany a wall of 5 feet, and a roof of 4 feet should accompany a wall of 15 feet. For the roof area involved, this should bring about the condition that down-scattered neutrons in the working areas are but a small fraction of the neutrons coming through the side walls.
Date:
June 30, 1951
Creator:
Moyer, B. J.
System:
The UNT Digital Library
Chemistry Division Quarterly Report: March, April and May, 1950
A quarterly summary of reports that have been published on research being conducted at the University of California Radiation Laboratory
Date:
June 30, 1950
Creator:
University of California. Radiation Laboratory.
System:
The UNT Digital Library
Comparison of performance of experimental and conventional cage designs and materials for 75-millimeter-bore cylindrical roller bearings at high speed
From Summary: "The results of two investigations, one to determine the relative merits of four experimental and two conventional design 75-millimeter-bore (size 215) cylindrical roller bearings and one to determine the relative merits of nodular iron and bronze as cage materials for this size and type of bearing, are presented in this report. Nine test bearings were operated over a range of dn values (product of bearing bore in mm and shaft speed in r.p.m) from 0.3 x 10(6) to 2.3 x 20(6), radial loads for 7 to 1613 pounds, and oil flows from 2 to 8 pounds per minute with a single-jet circulatory oil feed. Of the six bearings used to evaluate designs, four were experimental types with outer-race-riding cages and inner-race-guided rollers, and two were conventional types, one with outer-race-guided rollers and cage and one with inner-race-guided rollers and cage."
Date:
June 30, 1954
Creator:
Anderson, William J.; Macks, E. Fred & Nemeth, Zolton N.
System:
The UNT Digital Library
Design Study for a 15-BeV Accelerator
This report is the culmination of a year of progress and planning in the high-energy particle field. During this year the Brookhaven Cosmotron has been successfully completed and brought into operation for research at 2.3 Bev. Preliminary experimental results with the copious output of π-mesons are in process of publication. Multiple production of mesons has been observed, a few V-particles detected, and the interactions of π-mesons in hydrogen have been studied. Yet it already appears that higher energies will be needed to produce and study the several new heavy particles detected in cosmic ray observations.
Date:
June 30, 1953
Creator:
Livingston, M., Stanley, Prof.; Ramsey, N. F., Prof.; Street, J. C., Prof.; Pound, R. V., Prof; Preston, W. M., Prof; Selove, W., Prof. et al.
System:
The UNT Digital Library
A Design Study of Leading-Edge Inlets for Unswept Wings
Note presenting a practical method, employing a lofting technique, for determining the profile coordinates of an air inlet for the leading edge of an airfoil from formulas which are dependent only on the airfoil coordinates and on the height of the opening. It was found that the base-profile concept of thin-airfoil theory could be applied to a ducted airfoil with satisfactory results. Results regarding design inlets, modified inlets, and end-closure shape are provided.
Date:
June 30, 1950
Creator:
Dannenberg, Robert E.
System:
The UNT Digital Library
Determination of Rare Earths in Refined Uranium : Topical Report
Abstract: "Rare-earth analyses were performed on several samples of refined uranium oxide and nitrate, using a modified cellulose column procedure. Rare earths were not detectable in samples of 0.03 shotgun of less. Detection limits were from 0.0005 to 0.015 ppm. Negligible quantities of low-cross-section rare earths were found in less pure uranium samples, obtained during start-up operations of the pilot plant at the Feed Materials Production Center, primarily those rare earths of greater than average abundance in nature. No correlation was found between rare-earth content and shotgun values. Rare earths do not appear to be contributing significantly to the neutron absorption of refined uranium. A modified cellulose column procedure, which includes a preconcentration solvent-extraction step, is described. Radioactive tracer tests indicating rare-earth recoveries by the method of >98 per cent are reported."
Date:
June 30, 1953
Creator:
Ewing, R. A. & Bearse, A. E.
System:
The UNT Digital Library
The Distribution of Trace Uranium (VI) in Nitric Acid--TTA--Organic Solvent Mixtures
Three constants can be used to calculate the distribution coefficient of uranium (VI) with an accuracy of 15% in pentaether-nitric acid mixtures containing up to 1.42M total nitric acid and 0.6M TTA and in cyclohexanone-nitric acid mixtures containing up to 1.0M total nitric acid and 0.5M TTA.
Date:
June 30, 1950
Creator:
Heisig, D. L. & Crandall, Howard William, 1921-1990
System:
The UNT Digital Library
Experimental Investigation at High Subsonic Speeds of the Rolling-Stability Derivatives of a 1/22 Scale Model of the Republic F-105 Airplane
Report presenting an investigation of the rolling-stability derivatives for a model of the Republic F-105 airplane over a range of Mach numbers and angles of attack. The model retained damping in roll through the test ranges, but values of the damping varied considerably with angles of attack. Derivatives of yawing moment and lateral force due to rolling generally followed previously indicated trends.
Date:
June 30, 1955
Creator:
Sleeman, William C., Jr. & Hayes, William C., Jr.
System:
The UNT Digital Library
Experimental investigation of free-convection heat transfer in vertical tube at large Grashof numbers
Report presents the results of an investigation conducted to study free-convection heat transfer in a stationary vertical tube closed at the bottom. The walls of the tube were heated, and heated air in the tube was continuously replaced by fresh cool air at the top. The tube was designed to provide a gravitational field with Grashof numbers of a magnitude comparable with those generated by the centrifugal field in rotating-blade coolant passages (10(8) to 10(13)). Local heat-transfer coefficients in the turbulent-flow range and the temperature field within the fluid were obtained.
Date:
June 30, 1952
Creator:
Eckert, E. R. G. & Diaguila, A. J.
System:
The UNT Digital Library
An Exploratory Investigation of Some Types of Aeroelastic Instability of Open and Closed Bodies of Revolution Mounted on Slender Struts
"Aeroelastic instability phenomena of isolated open and closed rigid bodies of revolution free to move under elastic restraint have been investigated experimentally at low speeds by means of models suspended at zero angles of attack and yaw on slender flexible struts from a wind tunnel ceiling. Three types of instability were observed - flutter similar to classical bending-torsion flutter, divergence, and an uncoupled oscillatory instability which consists in nonviolent continuous or intermittent small-amplitude oscillations involving only angular deformations. The speeds at which this oscillatory instability starts were found to be as low as about one-third of the speed at flutter or divergence and to depend on the shape of the body, particularly that of the afterbody, and on the relative location of the elastic axis" (p. 1).
Date:
June 30, 1953
Creator:
Clevenson, S. A.; Wildmayer, E., Jr. & Diederich, Franklin W.
System:
The UNT Digital Library
Exploratory Investigation of the Flow in the Separated Region Ahead of Two Blunt Bodies at Mach Number 2
Memorandum presenting an investigation of flow separation from a flat plate ahead of two blunt two-dimensional bodies in detail at Mach number 2. Interferograms were obtained for the separated regions, and the pitot-pressure distribution and flow directions were surveyed in one of the regions. Results regarding recovery factors and static pressures, density, total pressure, Mach number distribution, and flow-direction survey are provided.
Date:
June 30, 1955
Creator:
Bernstein, Harry & Brunk, William E.
System:
The UNT Digital Library
A Flight-Test Study of Total-Pressure Distortion in a Thick-Lipped Nose Inlet
Memorandum presenting flight tests conducted on a thick-lipped nose inlet of a transonic swept-wing aircraft. The total-pressure recovery and distortion at the compressor face were measured over the maneuvering range of the airplane for Mach numbers up to 1.03. Results regarding the radial total-pressure profile, average total-pressure recovery, and total-pressure distortion are provided.
Date:
June 30, 1958
Creator:
Wingrove, Rodney C.
System:
The UNT Digital Library
Generalized Indical Forces on Deforming Rectangular Wings in Supersonic Flight
"A method is presented for determining the time-dependent flow over a rectangular wing moving with a supersonic forward speed and undergoing small vertical distortions expressible as polynomials involving spanwise and chordwise distances. The solution for the velocity potential is presented in a form analogous to that for steady supersonic flow having the familiar "reflected area" concept discovered by Evvard. Particular attention is paid to indicial-type motions and results are expressed in terms of generalized indicial forces. Numerical results for Mach numbers equal to 1.1 and 1.2 are given for polynomials of the first and fifth degree in the chordwise and spanwise directions, respectively, on a wing having an aspect ratio of 4" (p. 595).
Date:
June 30, 1954
Creator:
Lomax, Harvard; Fuller, Franklyn B. & Sluder, Loma
System:
The UNT Digital Library
Heat-transfer and operating characteristics of aluminum forced-convection and stainless-steel natural-convection water-cooled single-stage turbines
Report presenting testing of two water-cooled turbines, one of aluminum alloy using forced-convection cooling and one of stainless steel using natural-convection cooling, to obtain heat-transfer and general operating data like blade temperatures, coolant-flow rates, and coolant pumping losses. Results regarding outside and inside heat-transfer results, coolant pumping power, general operating results, and practical considerations for both are provided.
Date:
June 30, 1950
Creator:
Freche, John C. & Diaguila, A. J.
System:
The UNT Digital Library
Heat Transfer in Septafoil Geometries by Mass-Transfer Measurements
In conjunction with Gas-Cooled Reactor heat-transfer studies, local and mean heat-transfer factors are predicted from the heat transfer-mass transfer analogy using subliming naphthalene in air. Experimentation was conducted on 1-in.-dis septafoil rods in a 4-in. -dis flow channel with rod center-to center spacings of 1.10, 1.25, and 1.40 in. at a Reynolds modulus of approximately 60,000. Ratios of local mass transfer to mean mass transfer for a given rod vary as much as from 0.7 to 1.3 (outer rod, 1.10-in. spacings). Mean values of the mass-transfer factor are, in general, above that predicted by the correlation j-0.023 NRe^-0.2; as much as 46% got the outer rod t 1.25-in. spacing. The data indicate that for maximum mass transfer and minimum variation of the mass-transfer factor, an optimum rod spacing exists; the best observes is at 1.40-in.
Date:
June 30, 1959
Creator:
Wantland, J. L. & Miller, R. L.
System:
The UNT Digital Library
Investigation of a Half-Conical Scoop Inlet Mounted at Five Alternate Circumferential Locations Around a Circular Fuselage: Pressure-Recovery Results at a Mach Number 2.01
The effects of inlet circumferential position around the fuselage on the characteristics of a half-conical scoop inlet having a 24.6deg half-angle cone have been investigated in the langley 4- by 4-foot supersonic pressure tunnel. Pressure-recovery results have been obtained at a Mach number of 2.01 for a fixed boundary-layer-bleed height which was 60 percent of the boundary-layer thickness at an angle of attack of 0deg, and for cowling position parameters of 42.4deg and 38.0deg. inlet had a capture area equal to 24.9 percent of the basic-fuselage frontal area. The angle of attack was varied from 0deg to 12deg.
Date:
June 30, 1953
Creator:
Hasel, Lowell E.; Lankford, John L. & Robins, A. W.
System:
The UNT Digital Library
Investigation of the Static Stability Characteristics of Five Hypersonic Missile Configurations at Mach Numbers From 2.29 to 4.65
Report presenting an investigation to determine the static stability characteristics of five hypersonic missile configurations. Testing was performed at a range of Mach and Reynolds numbers. Results regarding the effect of base block, longitudinal stability, directional stability, and Reynolds number effect are provided.
Date:
June 30, 1958
Creator:
Turner, Kenneth L. & Appich, W. H., Jr.
System:
The UNT Digital Library
Investigation of the Static Stability Characteristics of Five Hypersonic Missile Configurations at Mach Numbers From 2.29 to 4.65
Report presenting an investigation in the Unitary Plan wind tunnel to determine the static stability characteristics of five hypersonic missile configurations. Tests were performed at a range of Mach and Reynolds numbers based on body length. Results regarding the effect of a base block, longitudinal and directional stability, and Reynolds number effect are provided.
Date:
June 30, 1958
Creator:
Turner, Kenneth L. & Appich, W. H., Jr.
System:
The UNT Digital Library
Liquid Metal Fuel Reactor, Technical Feasibility Report
Report concerning the technical feasibility of a full-scale Liquid Metal Fuel Reactor, including metallurgical, mechanical, and engineering evaluations.
Date:
June 30, 1955
Creator:
Babcock & Wilcox Company
System:
The UNT Digital Library
Low-Temperature Chemical Starting of a 200-Pound-Thrust JP-4 - Nitric Acid Rocket Engine Using a Three-Fluid Propellant Valve
Low-temperature chemical starting of combined JP-4 nitric acid propellant for low-thrust rocket engine using three-fluid propellant valve.
Date:
June 30, 1955
Creator:
Hennings, Glen & Morrell, Gerald
System:
The UNT Digital Library
The Nuclear Ramjet Propulsion System
The following report describes the workings and development of the nuclear ramjet propulsion systems.
Date:
June 30, 1959
Creator:
Merkle, Theodore C.
System:
The UNT Digital Library
Off-Site Animal Investigation Report : Second Annual Report
Since the inauguration of the Off-Site Animal Investigation project n 1957, there has been one annual report rendered as of 30 June 1958. this is the second annual report dated as of 30 June 1959. The objectives of the project have been unchanged during the past year. These are (1) to enhance the Nevada Test Site/off-site rancher relationship through an active investigation project in their interests, and (2) to provide further information as to the status of the off-site animals in their environment, with special emphasis on their radioactive isotope uptake from fall-out. isotope uptake of the animals is being emphasized as well as the gross and microscopic histopathological examinations. Two year's existence in an area of radio-contamination where a full fission spectrum of isotopes can be found, where radiation background reading range from 1/2 mr per hour to 1 = per hour, has produced no noticeable effect on the animals.
Date:
June 30, 1959
Creator:
Farmer, Garland F.
System:
The UNT Digital Library
Preliminary flight measurements of the dynamic longitudinal stability characteristics of the Convair XF-92A delta-wing airplane
Report presenting an analysis of some longitudinal maneuvers obtained during performance tests of the Convair XF-92A by using measured period and time to damp to half amplitude and with a computer to give a preliminary measurement of the airplane stability and damping at a range of Mach numbers. Results indicated that no loss in control effectiveness was shown, the static stability increased with Mach number, the damping was light but positive, and the damping factor was low.
Date:
June 30, 1953
Creator:
Holleman, Euclid C.; Evans, John H. & Triplett, William C.
System:
The UNT Digital Library
Preliminary Leaching Investigation of Ores From Radium Hill, South Australia
Leaching tests indicated high recoveries could be obtained by use of large quantities of sulfuric acid and boiling for relatively long periods. Filtration rates were satisfactory but large settling areas would be required to wash and thicken before filtering.
Date:
June 30, 1952
Creator:
Hollis, R. F.; Breymann, J. B. & Lynch, J. T.
System:
The UNT Digital Library