Resource Type
Serial/Series Title
NACA Wartime Reports
310
NACA Advanced Restricted Reports
119
NACA Memorandum Reports
72
NACA Advanced Confidential Reports
70
Atomic Energy Commission Reports
60
NACA Technical Reports
47
CP (Series) (Chicago, Illinois)
46
Chicago University Reports
46
NACA Restricted Bulletins
42
NACA Technical Notes
41
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561 Matching Results
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Progress Report: Development and Construction of Alpha-Counting Equipment
Abstract: An ionization chamber for use in counting alpha particle activity from the air has been devised for counting samples collected with the electrostatic precipitator. The chamber is an adaptation of the breech-locking standard chamber, with a cylindrical high voltage electrode into which the collection foil is placed, and a coaxial rod as a collecting electrode. A geometrical efficiency of close to 50% is obtained.
Date:
July 4, 1944
Creator:
Borkowski, C. J.; Dandl, R. A.; East, J. K. & Firminhac, R. H.
Object Type:
Report
System:
The UNT Digital Library
Computed Values of X-Ray Lines and Limits for the Trans-Uranic Elements
Report detailing values of x-ray lives and limits for trans-uranic elements. Formulas and methods are detailed throughout the report.
Date:
September 6, 1944
Creator:
Monk, Ardis T. & Allison, Samuel King
Object Type:
Report
System:
The UNT Digital Library
Bending Moment Due to Wind Pressure on Pole Chart 2A
Chart showing bending moment due to wind pressure on poles for various pole heights, circumferences, and loading. It is enlarged from figures in NBS discussion of national electrical safety code (handbook H39).
Date:
August 7, 1944
Creator:
United States. National Bureau of Standards.
Object Type:
Technical Drawing
System:
The UNT Digital Library
Ultimate Resisting Moments of Wood Poles Chart 2B
Chart showing the ultimate resisting moments of wood poles based on the circumferences at ground line for different kinds of woods. It is enlarged from figures in NBS discussion of national electrical safety code (handbook H39).
Date:
August 7, 1944
Creator:
United States. National Bureau of Standards.
Object Type:
Technical Drawing
System:
The UNT Digital Library
Catenary Chart 3
Chart of catenary curve ordinates: "The curve gives approximate values of sag at all points on the catenary curve expressed in per cent of the center sag. The error is negligible for all spans in which the center sag is less than 10% of the span length." It is enlarged from figures in NBS discussion of national electrical safety code (handbook H39).
Date:
August 7, 1944
Creator:
United States. National Bureau of Standards.
Object Type:
Technical Drawing
System:
The UNT Digital Library
Biological Action of Gamma and X-Rays
Report of experimentation on mice of exposure to daily doses of gamma radiation at two rates and the resultant damage.
Date:
December 22, 1944
Creator:
Lorenz, E.; Eschenbrenner, A.; Derringer, M. & Heston, W. E.
Object Type:
Report
System:
The UNT Digital Library
Columbia Scaling Circuits
Abstract: "The advantages of high scaling ratios in counting random pulses are discussed. The mechanism of the basic circuit used in the Columbia University scaling circuits is described. The difficulties experienced in the performance of the earlier circuits are indicated and modified circuits to eliminate these difficulties are given. Precautions that must be observed in carrying out the constructional details are suggested. The complete circuit and specifications are given in detail for a Scale of 128 for use with linear-amplifier systems" (p. 1).
Date:
May 2, 1944
Creator:
Glassford, H. A. & Dunning, J. R.
Object Type:
Report
System:
The UNT Digital Library
Nomographic Charts for Nuclear Reactions
Charts that show neutron energy, laboratory or center of gravity angle, and bombarding energy for nuclear reactions.
Date:
1944
Creator:
McKibben, J. L.
Object Type:
Technical Drawing
System:
The UNT Digital Library
Test Unit Power Supply
Technical drawing of electronic circuits and power supplies for nuclear reactors.
Date:
1944
Creator:
Sands, M.
Object Type:
Technical Drawing
System:
The UNT Digital Library
Three Channel Mixer
Declassified Manhattan Project technical drawing of amplifiers and electronic circuits for nuclear reactors.
Date:
1944
Creator:
Titterton, E. W.
Object Type:
Technical Drawing
System:
The UNT Digital Library
Camera Synchronizer
Declassified Manhattan Project technical drawing of cameras in nuclear reactors.
Date:
1944
Creator:
Whitham, Glenn E.
Object Type:
Technical Drawing
System:
The UNT Digital Library
Model 50 Power Supply
1 technical drawing of an electric power supply to a nuclear reactor.
Date:
1944
Creator:
Sands, M.
Object Type:
Technical Drawing
System:
The UNT Digital Library
Calibrated Sweep Generator
Technical drawing of signal generators for nuclear reactors.
Date:
1944
Creator:
U.S. Atomic Energy Commission
Object Type:
Technical Drawing
System:
The UNT Digital Library
East Area Bldg #906: DuPont Carbon Unit
Technical drawings of nuclear reactor design.
Date:
1944
Creator:
E. I. du Pont de Nemours & Company
Object Type:
Technical Drawing
System:
The UNT Digital Library
[Charts for Various Aspects of Poles]
Chart 1A-1B. Conductor loading nomograph, Chart 2A. Bending moment due to wind pressure on pole, Chart 2B. Ultimate resisting moments of wood poles, Chart 3. Catenary curve.
Date:
August 7, 1944
Creator:
United States. National Bureau of Standards.
Object Type:
Technical Drawing
System:
The UNT Digital Library
Conductor Loading Nomograph Chart 1B
Chart related to conductor loading showing vertical, transverse and conductor loads in pounds per linear feet of conductor. It is enlarged from figures in NBS discussion of national electrical safety code (handbook H39).
Date:
August 7, 1944
Creator:
United States. National Bureau of Standards.
Object Type:
Technical Drawing
System:
The UNT Digital Library
Radiometric Analysis of Thick Samples
Introduction: Measurements of polonium content in solids are usually performed by dissolving the material and preparing a thin sample which can be measured with one of the available instruments. A measurement of the radiation emerging from the thick sample should be sufficient to evaluate the polonium content. For this reason a calculation has been performed and the results have been compared with those obtained by the thin sample method. Obviously this proposed method using thick samples would be faster.
Date:
March 1, 1944
Creator:
DeBenedetti, Sergio
Object Type:
Report
System:
The UNT Digital Library
Specifications for the Freezing Point Method for Determination of the Amount of HF in UF₆
From introduction: "You will find enclosed the specifications for the freezing point method for determination of the amount of HF in UF₆. The specification for cleaning new shipping containers is also included."
Date:
February 26, 1944
Creator:
Priest, Homer F.
Object Type:
Report
System:
The UNT Digital Library
Secondary Stresses in Open Box Beams Subjected to Torsion
In open box beams subjected to torsion, secondary stresses arise owing to lateral bending of the spar caps. The present paper outlines a simple method for estimating the magnitude of these stresses and gives the results of tests of an open box beam in the neighborhood of a discontinuity where the cover changed from the top to the bottom of the box.
Date:
November 1944
Creator:
Kuhn, Paul; Batdorf, S. B. & Brilmyer, Harold G.
Object Type:
Report
System:
The UNT Digital Library
Flight Investigation at High Mach Numbers of Several Methods of Measuring Static Pressure on an Airplane Wing
Report discusses an investigation into static pressures in subsonic and supersonic flow over an airplane wing as measured by static-pressure tubes, a static-pressure belt, and orifices flush with the wing surface. The results obtained from the three types of measuring devices and a comparison to theoretical calculations are presented.
Date:
November 1944
Creator:
Zalovcik, John A. & Daum, Fred L.
Object Type:
Report
System:
The UNT Digital Library
Effect of a Trailing-Edge Extension on the Characteristics of a Propeller Section
Report presenting a convenient technical method to evaluate changes in the airfoil characteristics resulting from an extension of the chord at the trailing edge of a propeller blade section. The method determines the change in the angle of zero lift, the ideal angle of attack, and the difference in these angles as a function of the angle and length of the trailing-edge extension.
Date:
September 1944
Creator:
Theodorsen, Theodore & Stickle, George W.
Object Type:
Report
System:
The UNT Digital Library
Variation of peak pitching-moment coefficients for six airfoils as affected by compressibility
Report presenting pressure distribution tests of six NACA 16-series propeller sections with 1-foot chords in the 8-foot high-speed tunnel to determine the compressibility effects on peak section pitching-moment coefficients. Data is presented as curves of peak section pitching-moment coefficient against Mach number, thickness ratio, and camber. The peak pitching-moment coefficients were found to occur in the regions of positive and negative stall.
Date:
October 1944
Creator:
Cleary, Harold E.
Object Type:
Report
System:
The UNT Digital Library
Wind-Tunnel Investigation of Control-Surface Characteristics 16: Pressure Distribution Over an NACA 0009 Airfoil With 0.30-Airfoil-Chord Beveled-Trailing-Edge Flaps
Report discusses pressure-distribution tests of a plain flap with interchangeable beveled trailing edges on an NACA 0009 airfoil. The flap chord was 30 percent of the airfoil chord and the bevel chords were 15 and 20 percent of the flap chord. The purpose of these tests was to supply pressure-distribution data that may be used for structural and aerodynamic design of horizontal and vertical tail surfaces.
Date:
April 1944
Creator:
Hoggard, H. Page, Jr. & Bulloch, Marjorie E.
Object Type:
Report
System:
The UNT Digital Library
Wind-tunnel investigation of control-surface characteristics 17: beveled-trailing-edge flaps of 0.20, 0.30, and 0.40 airfoil chord on an NACA 0009 airfoil
Report presenting force tests in two-dimensional flow in the 4- by 6-foot vertical tunnel to determine the aerodynamic characteristics of an NACA 0009 airfoil with flaps having chord at 3 locations of the airfoil chord and three degrees of the beveled trailing edges. The results indicated that, with a smooth leading edge, the increased trailing-edge angle on the flaps with sealed gaps decreased the slope of the control-fixed lift curve and the lift effectiveness.
Date:
April 1944
Creator:
Lockwood, Vernard E.
Object Type:
Report
System:
The UNT Digital Library