Resource Type
Serial/Series Title
NACA Research Memorandums
173
Atomic Energy Commission Reports
61
NACA Technical Reports
30
Hanford Works Reports
20
HW (Series)
16
Oak Ridge National Laboratory Reports
15
University of California Radiation Laboratory Reports
12
AEC research and development report
6
AECU (Series)
6
BNL (Series)
6
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331 Matching Results
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313 - 331 of
331
Investigation of the hydrodynamic stability and resistance of two streamline fuselages
Report presenting an investigation of a dynamic model to determine the effects of hull form, gross load, and aerodynamic trimming moments on the trim limits, trim, hydrodynamic moment, hydrodynamic resistance, total resistance, and rise of two streamline fuselages modified by chine strips. Results regarding effects of hull form and effects of gross load are provided.
Date:
April 9, 1952
Creator:
Weinflash, Bernard & Shuford, Charles L., Jr.
Object Type:
Report
System:
The UNT Digital Library
The vertical wind tunnel of the National Advisory Committee for Aeronautics
"The vertical open-throat wind tunnel of the National Advisory Committee for Aeronautics is described in this report. The tunnel was built mainly for studying the spinning characteristics of airplane models, but may be used as well for the usual types of wind-tunnel tests. A special spinning balance is being developed to measure the desired forces and moments with the model simulating the spin of an airplane. Satisfactory air flow has been attained with a velocity that is uniform over the jet to within plus or minus 0.5 per cent" (p. 499).
Date:
February 9, 1931
Creator:
Wenzinger, Carl J. & Harris, Thomas A.
Object Type:
Report
System:
The UNT Digital Library
Flight and Test-Stand Investigation of High-Performance Fuels in Modified Double-Row Radial Air-Cooled Engines 1: Determination of the Cooling Characteristics of the Flight Engine
Report discussing the cooling characteristics of a modified 14-cylinder double-row radial air-cooled engine installed in a four-engine airplane at a pressure altitude of 7000 feet. Testing of the variable charge-air flow, variable cooling-air pressure drop, and variable fuel-air ratio was conducted. The cooling equation, temperature-limited performance, maximum engine temperatures, and other information predicted by calculations is described.
Date:
July 9, 1945
Creator:
Werner, Milton; Blackman, Calvin C. & White, H. Jack
Object Type:
Report
System:
The UNT Digital Library
Transonic Characteristics of Outboard Ailerons on a 4-Percent-Thick 30 Degree Sweptback Wing, Including Some Effects of Aileron Trailing-Edge Thickness and Aerodynamic Balance
Report presenting an investigation to determine the roll effectiveness, hinge-moment characteristics, and aileron center-of-load locations on an outboard 40-percent-semispan flap-type aileron on a 30 degree sweptback wing with an aspect ratio of 3.0, a taper ratio of 0.2, and NACA 65A004 airfoil sections. Results regarding general aileron characteristics and other aerodynamic characteristics are also presented.
Date:
July 9, 1958
Creator:
Whitcomb, Charles F. & Critzos, Chris C.
Object Type:
Report
System:
The UNT Digital Library
Free-Spinning Characteristics of a 1/21-Scale Model of the Douglas AD-2W Airplane: TED No. NACA DE329
Report presenting an investigation to determine the spin and recovery characteristics of a model of the Douglas AD-2W airplane, which has a large radome installation. Results indicated that the plane has satisfactory erect and inverted spin-recovery characteristics. Information about erect spins, inverted spins, and recommended recovery technique is provided.
Date:
June 9, 1948
Creator:
White, Richard P.
Object Type:
Report
System:
The UNT Digital Library
Effects of molding conditions on some physical properties of glass-fabric unsaturated-polyester laminates
Report presenting an investigation of the effects of several molding conditions on the physical properties of laminates prepared with Fiberglass 181 glass fabric and Bakelite XRS-81 unsaturated-polyester resin. The molding variables included pressure, temperature, and time during both precuring and curing operations. The laminates were tested for several physical properties including resin content, percentage of voids, specific gravity, and flexural strength on the diagonal, both wet and dry.
Date:
November 9, 1950
Creator:
Wier, John E.; Pons, Dorothy C. & Axilrod, Benjamin M.
Object Type:
Report
System:
The UNT Digital Library
An analysis of the potentialities of a two-stage counterrotating supersonic compressor
From Introduction: "The supersonic axial-flow compressor, for example, appears to offer advantages of high stage pressure ratio and height weight flows (reference 1) but problems peculiar to this compressor type have accompanied its introduction. For high single-stage pressure ratios (>4) the problem of converting the high dynamic energy to useful pressure arises (reference 2). In addition, the high tip speeds and weight flows combine to create a difficult situation for the turbine designer."
Date:
July 9, 1952
Creator:
Wilcox, Ward W.
Object Type:
Report
System:
The UNT Digital Library
Results Obtained from Third Flight of Northrop X-4 Airplane (A.F. No. 46-676)
NACA instrumentation has been installed in the Northrop X-4 airplane to obtain stability and control data during the Northrop conducted acceptance tests. The results o. the third flight of the X- ll. number 1 airplane are presented in this paper. The results of this flight showed that the directional stability as measured in steadily increasing sideslips was positive and high and that the lateral stability was positive.
Date:
September 9, 1949
Creator:
Williams, Walter C.
Object Type:
Report
System:
The UNT Digital Library
Supplementary Free-Spinning-Tunnel Investigation of a 1/20-Scale Model of the McDonnell F2H-3 Airplane With External Stores Installed
Memorandum presenting a supplementary investigation in the 20-foot free-spinning tunnel to determine the effect of external stores and lateral center-of-gravity displacement on the spin and spin-recovery characteristics of a scale model of the McDonnell F2H-3 airplane. Results regarding wing-tip tanks and experimental aerodynamic shapes are provided.
Date:
June 9, 1952
Creator:
Wilson, Jack H.
Object Type:
Report
System:
The UNT Digital Library
Supplementary Free-Spinning-Tunnel Investigation of a 1/20-Scale Model of the McDonnell F2H-3 Airplane with External Stores Installed: TED No. NACA DE 2393
Memorandum presenting a supplementary investigation conducted in the 20-foot free-spinning tunnel to determine the effect of external stores and lateral center-of-gravity displacement upon the spin and spin-recovery characteristics of a 1/20-scale model of the McDonnell F2H-3 airplane. Results regarding the tests with wing-tip tanks installed and with the experimental aerodynamic shape installed are provided.
Date:
June 9, 1952
Creator:
Wilson, Jack H.
Object Type:
Report
System:
The UNT Digital Library
Developments in the HLO Bearing Test Program Interim Report
The chemical processing industry relies heavily on the use of rotary pumps to move massive quantities of liquids. The rotating elements of these pumps, generally of the deep-well turbine type, are submerged in the solution being pumped. This singular factor sometimes imposes a severe limitation on the choice bearings because the liquids are frequently corrosive and have poor lubricity. At the Hanford Atomic Products Operation a further complication arises from the effects of radioactivity in the solutions being transferred. Radiation and temperature can and will cause physical damage to many substances, including certain potential bearing materials such as plastics. These factors, coupled with the economics of remote operation and maintenance, have lead to the need for a test program to screen and evaluate potential bearing and journal materials.
Date:
January 9, 1959
Creator:
Wirta, R. W.
Object Type:
Report
System:
The UNT Digital Library
Performance of J33-A-27 Turbojet-Engine Compressor, III, Over-All Performance Characteristics of Modified Compressor with Water Injection at Design Equivalent Speed of 11,800 RPM
An investigation was conducted to determine the effects of water injection on the over-all performance of a modified J33-A-27 turbojet-engine compressor at the design equivalent speed of 11,800 rpm. The water-air ratio by weight was 0.05. With water injection the peak pressure ratio increased 9.0 per- cent, the maximum efficiency decreased 15 percent (actual numerical difference 0.12), and. the maximum total weight flow increased 9.3 percent.
Date:
June 9, 1950
Creator:
Withee, Joseph R., Jr.; Beede, William L. & Ginsburg, Ambrose
Object Type:
Report
System:
The UNT Digital Library
The influence of vortex generators on the performance of a short 1.9:1 straight-wall annular diffuser with a whirling inlet flow
Report presenting an investigation in a duct system with fully developed pipe flow to determine the effects of vortex generators on the performance of a diffuser with whirling inlet flow. Testing was made with three different inlet whirl angles and rectangular, noncambered airfoils that varied in chord, span, angle setting, number, and location. Results for the 20.6 degree inlet whirl angle, 15.2 degree inlet whirl angle, 0 degree inlet whirl angle, and effect of inlet whirl angle on diffuser performance are provided.
Date:
February 9, 1953
Creator:
Wood, Charles C. & Higginbotham, James T.
Object Type:
Report
System:
The UNT Digital Library
Analytical investigation of the use of regeneration in compressor-turbine-propeller systems
From Introduction: "The purpose of the present paper is to show in more detail the possibilities end the limitations of the use of regeneration as a means of effecting greater fuel economy and of reducing the net weight of the power plant and fuel of compressor-turbine-propeller aircraft engines."
Date:
September 9, 1946
Creator:
Wood, George P.
Object Type:
Report
System:
The UNT Digital Library
Design procedure and limited test results for a high solidity, 12-inch transonic impeller with axial discharge
Report presenting an approximate inverse impeller design procedure based on the assumption of axisymmetric, nonviscous flow along with some limited experimental data obtained from a high solidity, 12-inch transonic impeller. The design procedure includes a point-by-point solution of the impeller flow conditions along a series of streamlines in the radial-axial plane. Results regarding the overall performance, impeller flow limits, and blade structural failure are provided.
Date:
April 9, 1953
Creator:
Wright, Linwood C. & Kovach, Karl
Object Type:
Report
System:
The UNT Digital Library
Power Unit for High-Intensity Light Source
"A light-source power unit has been developed that provides reliable trigger, and easy synchronization with rotating elements or electric impulses. When used with conventional spark gaps and flash tubes, this power unit provides a light pulse of high intensity and short duration" (p. 1).
Date:
July 9, 1951
Creator:
Young, Allen E.; McCullough, Stuart & Smith, Richard L.
Object Type:
Report
System:
The UNT Digital Library
Temperature Effect in Homogeneous Pile
Some idealized considerations of the temperature field in the homogeneous pile are given. It is crudely estimated that the effective mean temperature rise of the pile to be used in calculating the k loss is something like 3/4 the rise in temperature of the slurry in passing through the pile.
Date:
December 9, 1943
Creator:
Young, Gale Jay
Object Type:
Report
System:
The UNT Digital Library
Ames Project, Chemical Research - General, for the Period September 10, 1944 to October 10, 1944
Technical report with short articles on (1) Uranium-oxygen system compositions UO2 to U3O3; (2) Thorium hydride; (3) Production of cerium; and (4) Production of thorium.
Date:
November 9, 1944
Creator:
pedding, F. H. (Frank Harold), 1902- & Wilhelm, H. A.
Object Type:
Report
System:
The UNT Digital Library
Final Engineering Report Covering Austin Beta-Gamma Hand and Foot Checker
Abstract: "This final report discusses the project objectives and the manner in which these were attained in connection with the design and manufacture of the Austin Beta-Gamma Hand and Foot checker (Fig 1). Improvements incorporated to conform the equipment to modern production methods, as well as practical changes to achieve automatic operation and increased stability and to facilitate and simplify maintenance procedures, are covered in detail. The report also includes photographs (Figs. 2 and 3) and a schematic diagram of the final product (Fig. 4)" (p. 1)
Date:
November 9, 1949
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library