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136
National Advisory Committee for Aeronautics Collection
67
TRAIL Microcard Collection
33
Office of Scientific & Technical Information Technical Reports
27
Texas Attorney General Opinions
14
Government Documents A to Z Digitization Project
3
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3
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2
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NACA Research Memorandums
47
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27
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20
Atomic Energy Commission Reports
17
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7
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7
Trace elements investigations report
7
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6
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5
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182 Matching Results
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Flow Separation From Rods Ahead of Blunt Noses at Mach Number 2.72
"An experimental investigation in the Langley Gas Dynamics Laboratory has been made of the flow separation from slender rods mounted to extend forward along the axes of symmetry of blunt-nosed bodies. The mechanism of the separation and its governing criteria are discussed. Drag data at a Mach number of 2.72 for various rod lengths and nose radii at an angle of attack of zero degrees are presented. It was found that the drag coefficients of blunt noses could be appreciably reduced by the use of protruding rods. Criteria for rod length which gives lowest drag are given" (p. 1).
Date:
July 15, 1952
Creator:
Jones, Jim J.
Object Type:
Report
System:
The UNT Digital Library
The theoretical characteristics of triangular-tip control surfaces at supersonic speeds: Mach lines behind trailing edges
Report presenting generalized expressions in closed form obtained for the characteristics due to control-surface deflection and wing angle of attack for wing plan forms with triangular-tip control surfaces at supersonic speeds. Charts are presented for the deflection characteristics for configurations having the sweep of the wing and control-surface trailing edges equal and for the location of the hinge line for balanced controls.
Date:
July 1952
Creator:
Kainer, Julian H. & King, Mary Dowd
Object Type:
Report
System:
The UNT Digital Library
Reactor Physics of Teapot - Part 3
Introduction: This is the third of a series of memoranda concerning the statics of the teapot, a small-scale boiling reactor experiment, and covers power coefficients of reactivity, energy coefficients of fluid density, the poisoning effects of fission products, and production of gases. The numbering of the equations, figures, and tables thus follows that of CF 52-6-118.
Date:
July 16, 1952
Creator:
Kasten, Paul R.
Object Type:
Report
System:
The UNT Digital Library
Electromagnetically Enriched Isotopes Inventory, July 31, 1952
None
Date:
July 31, 1952
Creator:
Keim, C. P.; Normand, C. E. & Weaver, B.
Object Type:
Report
System:
The UNT Digital Library
An Investigation of the Low-Speed Longitudinal Stability Characteristics of a Swept-Wing Airplane Model With Two Modifications to the Wing-Root Plan Form
Report presenting a wind-tunnel investigation to determine the effects of two wing-root leading-edge plan-form modifications, including a notched leading-edge fillet and a rounded leading-edge fillet, on the low-speed longitudinal stability characteristics of an airplane model with a 50.7 degree sweptback wing. Results regarding stability at zero lift, variation of stability with lift coefficient, and lift and drag characteristics are provided.
Date:
July 11, 1952
Creator:
Kemp, William B., Jr.
Object Type:
Report
System:
The UNT Digital Library
PILOT PLANT BATCH FLOTATION TESTS ON LOT A-200 RADIOACTIVE ORE AT MIDDLESEX WAREHOUSE, MIDDLESEX, NEW JERSEY
None
Date:
July 30, 1952
Creator:
Kennedy, J.S. & Kentro, D.M.
Object Type:
Report
System:
The UNT Digital Library
Separation of Isotopes by Mass Diffusion - Unequal Diffusion Coefficients
From summary: "Equations for determination of stage enrichment factor and screen area for the ideal case of 'zero back-pressure' are derived...Comparison with the theory of Benedict is made together with recommendations for application of his results for non-zero back pressure to the case under consideration."
Date:
July 30, 1952
Creator:
Keyes, J. J., Jr.
Object Type:
Report
System:
The UNT Digital Library
Force characteristics in the submerged and planing condition of a 1/5.78-scale model of a hydro-ski-wheel combination for the Grumman JRF-5 airplane
From Summary: "Force characteristics determined from tank tests of a 1/5.78-scale model of a hydro-ski-wheel combination for the Grumman JRF-5 airplane are presented. The model was tested in both the submerged and planing conditions over a range of trim, speed, and load sufficiently large to represent the most probable full-size conditions."
Date:
July 11, 1952
Creator:
Land, Norman S. & Pelz, Charles A.
Object Type:
Report
System:
The UNT Digital Library
THE THERMODYNAMICS OF THE REDUCTION OF URANIUM COMPOUNDS TO URANIUM METAL
None
Date:
July 21, 1952
Creator:
Lemmon, A.W.; Ward, J.J.; Fischer, S.M.; Geankoplis, C.J. & Clegg, J.W.
Object Type:
Report
System:
The UNT Digital Library
A probability analysis of the meteorological factors conducive to aircraft icing in the United States
Report presenting an analysis of meteorological icing data obtained in flight and some methods developed for the determination of the various simultaneous combinations of the three basic icing parameters (liquid-water content, drop diameter, and temperature) which would have equal probability of being exceeded in flight, the probability of exceeding any specified group of values of liquid-water content associated with temperature and drop-diameter values in specified ranges. These methods can be used to design ice prevention equipment for aircraft.
Date:
July 1952
Creator:
Lewis, William & Bergrun, Norman R.
Object Type:
Report
System:
The UNT Digital Library
A Probability Analysis of the Meteorological Factors Conducive to Aircraft Icing in the United States
Note presenting meteorological icing data obtianed in flight in the United States that is analyzed statistically and used to develop methods for the determination of the various simultaneous combinations of the three basic icing parameters and the probability of exceeding any specified group of values of liquid-water content associated simultaneously with temperature and drop-diameter values. A mathematical basis is also provided for the future statistical analysis of meteorological icing data that can be obtained throughout the world.
Date:
July 1952
Creator:
Lewis, William & Bergrun, Norman R.
Object Type:
Report
System:
The UNT Digital Library
Choking of a Subsonic Induction Tunnel by the Flow from an Induction Nozzle
Note presenting experimental data demonstrating the decrease in stream Mach number observed to occur as the pressure of the inducing air in an induction nozzle was increased in the high-subsonic speed range. This performance characteristic was analytically demonstrated to be associated with choking of the induced flow.
Date:
July 1952
Creator:
Lindsey, W. F.
Object Type:
Report
System:
The UNT Digital Library
Effects of Aspect Ratio on Air Flow at High Subsonic Mach Numbers
Schlieren photographs were used in an investigation to determine the effects of changing the aspect ratio from infinity to 2 on the air flow past a wing at high subsonic Mach numbers. The results indicated that the decreased effects of compressibility on drag coefficients for the finite wing are produced by a reduction in the compression shock and flow separation.
Date:
July 1952
Creator:
Lindsey, W. F. & Humphreys, Milton D.
Object Type:
Report
System:
The UNT Digital Library
Control characteristics at transonic speeds of a linked flap and spoiler on a tapered 45 degrees sweptback wing of aspect ratio 3
Report presenting an investigation at transonic speeds to determine the control characteristics of a linked flap and spoiler. The control consisted of a linked combination of a quarter-span inboard plug-type spoiler and a full-span flap. Results regarding the hinge-moment, pitching-moment, lift, and rolling-moment are provided.
Date:
July 11, 1952
Creator:
Lockwood, Vernard E. & Fikes, Joseph E.
Object Type:
Report
System:
The UNT Digital Library
A Vapor Pressure Chart for Metals
From conclusions: There is a close enough correlation for most metals to give the chart some utility in estimating vapor pressure of metals.
Date:
July 10, 1952
Creator:
Loftness, Robert L.
Object Type:
Report
System:
The UNT Digital Library
Beryllia and Beryllia-Beryllium Bodies for Moderating Cores in Fuel Elements
From introduction: This report presents the results of the two phases of the work: study of the compatibility of beryllia bodies with a coating material, molybdenum; and studies of beryllia-beryllium body fabrication.
Date:
July 31, 1952
Creator:
Long, R. E.; Duckworth, W. H.; Saller, Henry A.; Stacy, J. T.; Miller, R. A. & Schofield, H. Z.
Object Type:
Report
System:
The UNT Digital Library
Recovery of Oil in California By Secondary Methods: In Two Parts - Part 1. San Joaquin Valley Oil Fields
Report issued by the U.S. Bureau of Mines on the study of secondary-recovery methods of oil production in California. The report discusses methods and properties of this type of oil production, focusing on air injection. This report is in two parts, and contains tables and maps.
Date:
July 1952
Creator:
Loomis, A. G.; Fried, A. N. & Crowell, D. C.
Object Type:
Report
System:
The UNT Digital Library
Preliminary Report on Uranium-Bearing Pliocene (?) Rocks in the Split Rock Area, Central Wyoming
From abstract: A sequence of slightly radioactive Pliocene(?) rocks in the Split Rock area of central Wyoming is at least 600 feet thick, underlies an area of more than 25 square miles, and consists of alternating beds of tuffaceous shale, sandstone, and pumicite. Only a small part of the section has been examined. In addition to the uranium content of the strata, there has been secondary concentration of uranium in brecciated limestone similar to spring deposits that could be of Pliocene or Pleistocene age.
Date:
July 1952
Creator:
Love, J. D.
Object Type:
Report
System:
The UNT Digital Library
Neutron Burst from a Cylindrical Untamped OY Assembly
A neutron burst from an untamped cylindrical Oy assembly occurred at the Pajarito Remote Control Laboratory at 1800 hours on 18 April 1952. The circumstances causing the burst and a description of the assembly involved are given There was no personnel hazard. Normal operations could have been resumed on other assemblies withing two or three hours after the burst. No evidence of damage to the oy was observed. It was determined that the burst resulted in 1.5 x 10(16) fissions in the oy. Also reported are some results of the computations and post-burst tests and a discussion of probable time behavior of power level during the burst.
Date:
July 22, 1952
Creator:
Mallary, E. C.; Hansen, G. E.; Linenberger, G. A. & Wood, D. P.
Object Type:
Report
System:
The UNT Digital Library
Plastic Stress-Strain Relations for Combined Tension and Compression
Note presenting an investigation to determine the validity of the plasticity theories and the correctness of various assumptions made in these theories. Plastic stress-strain relations for biaxial tension-compression principal stresses were determined for a 14S-T4 aluminum alloy. Since the constant-stress-ratio tests cannot distinguish between the flow and deformation theories, variable-stress-ratio tests and special biaxial tests were conducted.
Date:
July 1952
Creator:
Marin, Joseph & Wiseman, H. A. B.
Object Type:
Report
System:
The UNT Digital Library
Span load distributions resulting from angle of attack, rolling, and pitching for tapered sweptback wings with streamwise tips: Supersonic leading and trailing edges
Report presenting the span load distributions resulting from constant angle of attack, steady rolling, and steady pitching for a series of thin sweptback tapered wings with streamwise tips and supersonic leading and trailing edges. The results of the analysis are presented as a series of design charts.
Date:
July 1952
Creator:
Martin, John C. & Jeffreys, Isabella
Object Type:
Report
System:
The UNT Digital Library
Experimental investigation of the local and average skin friction in the laminar boundary layer on a flat plate at a Mach number of 2.4
Report presenting average and local skin-friction coefficients for laminar flow on a plate plate at Mach number 2.4 and compared with the laminar-boundary-layer theory of Chapman and Rubesin. The average skin-friction coefficients were calculated by the momentum-loss method from impact-pressure surveys of the boundary layer.
Date:
July 1952
Creator:
Maydew, Randall C. & Pappas, Constantine C.
Object Type:
Report
System:
The UNT Digital Library
Numerical determination of indicial lift and moment functions for a two-dimensional sinking and pitching airfoil at Mach numbers 0.5 and 0.6
Report presenting the indical lift and moment functions for sinking and pitching motion at Mach numbers 0.5 and 0.6. The functions are determined from a knowledge of existing oscillatory coefficients at low reduced frequencies and from approximate expressions of the coefficients at high reduced frequencies. Results regarding determination of indical functions, considerations for indical lift due to penetration of a sharp-edge gust, and approximation of indical functions by analytic expressions are provided.
Date:
July 1952
Creator:
Mazelsky, Bernard & Drischler, Joseph A.
Object Type:
Report
System:
The UNT Digital Library
Procedures for Uranium Spectrography
Report discussing a method for uranium spectography. The analytical procedures are described in detail, as well as the restocking and maintenance procedures that are associated with the method.
Date:
July 31, 1952
Creator:
McIlhenny, R. C.
Object Type:
Report
System:
The UNT Digital Library