Resource Type
Serial/Series Title
NACA Wartime Reports
176
NACA Advanced Restricted Reports
92
NACA Technical Notes
40
United States Geological Survey Reports
39
NACA Technical Memorandums
38
U.S. Geological Survey bulletin
37
NACA Advanced Confidential Reports
32
NACA Memorandum Reports
31
Strategic minerals investigations
31
United States Bureau of Mines Reports
25
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States
361 Matching Results
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Quarry Accidents in the United States During the Calendar Year 1940
Report published by the U.S. Bureau of Mines which is a compilation of accidents in quarries located in the United States with data regarding the number and kinds of accidents as well as information about the mining operations (e.g., number of men employed, kinds of quarries, amount of work performed, etc.).
Date:
1942
Creator:
Adams, William W. & Wrenn, Virginia E.
Object Type:
Report
System:
The UNT Digital Library
Coal-Mine Accidents in the United States, 1940
Report compiled by the U.S. Bureau of Mines including statistics on fatal and non-fatal accidents in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date:
1942
Creator:
Adams, William W.; Geyer, L. E. & Parry, M. G.
Object Type:
Report
System:
The UNT Digital Library
Metal- and Nonmetal-Mine Accidents in the United States During the Calendar Year 1940 (Excluding Coal Mines)
Report published by the U.S. Bureau of Mines regarding accidents at mines located in the United States for all operations except coal mines. The report includes statistics about the number and kinds of accidents as well as information about the mining operations (i.e., number of persons employed, average amount of work performed per person, etc.).
Date:
1942
Creator:
Adams, W. W. & Kolhos, M. E.
Object Type:
Report
System:
The UNT Digital Library
Seismic Effects of Quarry Blasting
From Object of Bulletin: "The object of this bulletin is to review briefly the previous publications so that the reader may follow the progress of the research and to supply the technical details supporting the conclusions reached."
Date:
1942
Creator:
Thoenen, J. R. & Windes, S. L.
Object Type:
Report
System:
The UNT Digital Library
Coal-Mine Accidents in the United States, 1939
Report compiled by the U.S. Bureau of Mines including statistics on fatal and non-fatal accidents in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date:
1942
Creator:
Adams, William W.; Geyer, L. E. & Parry, M. G.
Object Type:
Report
System:
The UNT Digital Library
Plastic and Swelling Properties of Bituminous Coking Coals
From Introduction: "A critical review of the numerous test methods that have been devised for measuring the "plastic" and "swelling" properties of bituminous coking coals and the practical evaluation of the data obtained has long been needed."
Date:
1942
Creator:
Brewer, R. E.
Object Type:
Report
System:
The UNT Digital Library
Typical Analyses of Coals of the United States
From Introduction: "This paper presents a summary, in tabular form, of the composition of commercial coal resources of the country."
Date:
1942
Creator:
Fieldner, A. C.; Rice, W. E. & Moran, H. E.
Object Type:
Report
System:
The UNT Digital Library
Sponge Chromium
From Introduction: "There follows discussion of the reduction processes suitable for preparing sponge chromium from the chlorides, and finally the question of special methods required to insure the production of a high-purity product is investigated. This order is a natural and chronological one as well as being suited to the needs of presenting an analytic picture of the experimental work and its results and proposals engendered."
Date:
1942
Creator:
Maier, C. G.
Object Type:
Report
System:
The UNT Digital Library
Investigations of Permissible Electric Mine Lamps, 1930-40
From Introduction: "This bulletin presents the Bureau's test requirements and procedure relative to permissible electric mine lamps and describes briefly the lamps, giving tabulated details of each."
Date:
1942
Creator:
Ilsley, L. C.; Hooker, A. B. & Roadstrum, W. H.
Object Type:
Report
System:
The UNT Digital Library
United States Earthquakes 1942
Report discussing earthquake activity in the United States during 1942. The report is broken down by regions and has sections for specific earthquakes.
Date:
1942
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Experimental Investigation of a New Type of Low-Drag Wing-Nacelle Combination
Report discusses the results of an experimental investigation of two low-drag wing-nacelle units suitable for use with pusher propellers. The benefits of adding a nacelle to the wing are detailed.
Date:
July 1942
Creator:
Allen, H. Julian & Frick, Charles W., Jr.
Object Type:
Report
System:
The UNT Digital Library
Tests of a Heated Low-Drag Airfoil
Report discusses the results of an experimental investigation into the NACA 65,2-016 heated wing. Information about the effect of heating on the drag coefficients, Reynolds numbers, and stability of the laminar boundary layer.
Date:
December 1942
Creator:
Frick, Charles W., Jr. & McCullough, George B.
Object Type:
Report
System:
The UNT Digital Library
A Profile-Drag Investigation in Flight on an Experimental Fighter-Type Airplane the North American XP-51
Report discussing the results of an investigation of the North American XP-51 and its low-drag airfoils. Several surface conditions were tested and the profile-drag coefficients were determined. The surface that was smoothened and faired by filling and sanding had the lowest profile-drag coefficient.
Date:
November 1942
Creator:
Zalovcik, John A.
Object Type:
Report
System:
The UNT Digital Library
Preliminary Low-Drag-Airfoil and Flap Data from Tests at Large Reynolds Numbers and Low Turbulence
Report presenting data on basic thickness and mean-line forms and airfoil test data giving standard airfoil characteristics in tabular and chart form.
Date:
March 1942
Creator:
Jacobs, Eastman N.; Abbott, Ira H. & Davidson, Milton
Object Type:
Report
System:
The UNT Digital Library
Normal-pressure tests of rectangular plates
From Summary: "Normal-pressure tests were made of 56 rectangular plates with clamped edges and of 5 plats with freely supported edges. Pressure was applied and the center deflection and the permanent set at the center were measured. For some of the plates, strains and contours were measured in addition."
Date:
June 1942
Creator:
Ramberg, Walter; McPherson, Albert E. & Levy, Samuel
Object Type:
Report
System:
The UNT Digital Library
A Preliminary Investigation of the Electrical Structure of Thunderstorms
Note presenting a study of the electrical charge structure of thunderstorms by the use of continuously synchronized records of the electrical-potential gradient at the surface of the earth under the influence of active storms.
Date:
July 1942
Creator:
Workman, E. J. & Holzer, R. E.
Object Type:
Report
System:
The UNT Digital Library
Strength tests of thin-walled elliptic duralumin cylinders in pure bending and in combined pure bending and torsion
An analysis is presented of the results of tests made by the Massachusetts Institute of Technology and by the National Advisory Committee for Aeronautics on an investigation of the strength of thin-walled circular and elliptic cylinders in pure bending and in combined torsion and bending. In each of the loading conditions, the bending moments were applied in the plane of the major axis of the ellipse.
Date:
June 1942
Creator:
Lundquist, Eugene E. & Stowell, Elbridge Z.
Object Type:
Report
System:
The UNT Digital Library
Design of Tools for Press-Countersinking or Dimpling 0.040-Inch-Thick 24S-T Sheet
"A set of dimpling tools was designed for 0.040-inch 24S-T sheet and flush-type rivets 1/8 inch in diameter with 100 degree countersunk heads. The dimples produced under different conditions of pressure, sheet thickness, and drill diameter are presented as cross-sectional photographs magnified 20 times. The most satisfactory values for the dimpling tools were found to be: maximum punch diameter, 0.231 inch; maximum die diameter, 0.223 inch; maximum mandrel diameter, 0.128 inch; dimple angle, 100 degree; punch springback angle, 1 1/2 degree; and die springback angle, 2 degree" (p. 1).
Date:
August 1942
Creator:
Templin, R. L. & Fogwell, J. W.
Object Type:
Report
System:
The UNT Digital Library
A Method for Determining the Camber and Twist of a Surface to Support a Given Distribution of Lift
"A graphical method is described for finding the shape (camber and twist) of an airfoil having an arbitrary distribution of lift. The method consists in replacing the lifting surface and its wake with an equivalent arrangement of vortices and in finding the associated vertical velocities. By a division of the vortex pattern into circular strips concentric about the downwash point instead of into the usual rectangular strips, the lifting surface is reduced for each downwash point to an equivalent loaded line for which the induced velocity is readily computed" (p. 1).
Date:
August 1942
Creator:
Cohen, Doris
Object Type:
Report
System:
The UNT Digital Library
Effect of rivet and spot-weld spacing on the strength of axially loaded sheet-stringer panels of 24S-T aluminum alloy
Report presenting testing of eighteen 24S-T aluminum alloy sheet-stringer panels in end compression under carefully controlled edge conditions. Results regarding the strains, deflections, failure, and buckling of the sheet are provided.
Date:
August 1942
Creator:
Levy, Samuel; McPherson, Albert E. & Ramberg, Walter
Object Type:
Report
System:
The UNT Digital Library
Improvement of Fatigue Life of an Aluminum Alloy by Overstressing
"Fatigue tests were made on some 1.375-inch-diameter and 0.300-inch diameter specimens of a 17S-T aluminum alloy rod. One test of a large specimen was run continuously to failure at a maximum stress of 22,000 pounds per square inch. In two other tests of large specimens, thin surface layers were removed periodically until failure occurred. The same nominal maximum stress of 22,000 pounds per square inch was used throughout the two tests and the load on the fatigue machine was lowered accordingly after the removal of each surface layer" (p. 1).
Date:
August 1942
Creator:
Stickley, G. W.
Object Type:
Report
System:
The UNT Digital Library
A comparison of the results from general tank tests of 1/6- and 1/12-full-size models of the British Singapore IIC flying boat
From Summary: "A 1/6-full-size model of the hull of the British Singapore IIC flying boat was tested in the NACA tank. The results are given in the form of charts and are compared with the results of previous tests made in the NACA tank of a 1/12-full-size model, published in NACA T.N. No. 580, and with the results of tests made in the British R.A.E. tank of another 1/6-full-size model of the same hull. When the data from the tests of the 1/6- and 1/12-full-size models were compared on the basis of Froude's law of comparison, differences were found."
Date:
August 1942
Creator:
Truscott, Starr & Dawson, John R.
Object Type:
Report
System:
The UNT Digital Library
On the Distribution of Stress in a Thin Plate Elastically Supported Along Two Edges at Loads Beyond the Stability Limit
Note presenting the results of an investigation on the distribution of stress in a plate elastically supported along two edges and subjected to compressive loads in a direction parallel to the elastically supported edges. A theoretical calculation was carried out in which the influence of the elastic support was taken into account.
Date:
October 1942
Creator:
Dunn, Louis G.
Object Type:
Report
System:
The UNT Digital Library
Tensile and Pack Compressive Tests of Some Sheets of Aluminum Alloy, 1025 Carbon Steel, and Chromium-Nickel Steel
"Tensile and compressive stress-strain curves, stress-deviation curves, and secant modulus-stress curves are given for longitudinal and transverse specimens of 17S-T, 24S-T, and 24S-RT aluminum-alloy sheet in thicknesses from 0.032 to 0.081 inch, 1025 carbon steel sheet in thicknesses of 0.054 and 0.120 inch, and chromium-nickel steel sheet in thicknesses form 0.020 to 0.0275 inch. Significant differences were found between the tensile and the compressive stress-strain curves, and also the corresponding corollary curves; similarly, differences were found between the curves for the longitudinal and transverse directions" (p. 1).
Date:
February 1942
Creator:
Atchison, C. S. & Miller, James A.
Object Type:
Report
System:
The UNT Digital Library