Collection
Texas Attorney General Opinions
764
Technical Report Archive and Image Library
418
National Advisory Committee for Aeronautics Collection
334
World War Two Collection
189
World War Poster Collection
128
World War Two Newsmaps
52
USGS Topographic Map Collection
46
TRAIL Microcard Collection
45
Office of Scientific & Technical Information Technical Reports
39
Government Documents A to Z Digitization Project
27
12 More
Country
States
Year
Month
Language
1,508 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
1,508
next
Give us lumber for more PT's.
Color image of war ships at sea. In the foreground is a boat with "PT 34" painted on it, shining a light and speeding forward. In the background, a ship is sinking as explosive flames rise from it. Other ships and flames can be seen in the distance on the left.
Date:
1943
Creator:
AEL.
Object Type:
Poster
System:
The UNT Digital Library
Lift and drag data for 30 pusher-propeller shaft housings on an NACA 65,3-018 airfoil section
Report presenting tests in the two-dimensional low-turbulence pressure tunnel to study the interference effects of various pusher-propeller shaft-housing combinations on a low-drag airfoil. Thirty different combinations were tested, variations being made in shaft size, shape, angle, and fillet.
Date:
November 1943
Creator:
Abbott, Frank T., Jr.
Object Type:
Report
System:
The UNT Digital Library
Wind-tunnel investigation of profile drag and lift of an intermediate wing section of the XP-51 airplane with beveled trailing-edge and contour ailerons
Report presenting the results of flight investigations showing that a beveled trailing-edge aileron gives as low or a lower profile drag than a contour aileron. Section profile drag and lift coefficients with two different types of ailerons were obtained at 3 different Reynolds numbers.
Date:
January 1943
Creator:
Abbott, Frank T., Jr. & Underwood, William J.
Object Type:
Report
System:
The UNT Digital Library
Tail Buffeting
"An approximate theory of buffeting is here presented, based on the assumption of harmonic disturbing forces. Two cases of buffeting are considered: namely, for a tail angle of attack greater and less than the stalling angle, respectively. On the basis of the tests conducted and the results of foreign investigators, a general analysis is given of the nature of the forced vibrations the possible load limits on the tail, and the methods of elimination of buffeting" (p. 1).
Date:
February 1943
Creator:
Abdrashitov, G.
Object Type:
Report
System:
The UNT Digital Library
Quality of Columbia River water
This report is a memorandum sent on January 27, 1943 concerning the quality of the water of Columbia River. Topics included: ph value, water temperatures, hardness, and dissolved carbon dioxide contents.
Date:
January 27, 1943
Creator:
Acken, M. F.
Object Type:
Report
System:
The UNT Digital Library
Quarry Accidents in the United States During the Calendar Year 1941
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:
1943
Creator:
Adams, William W. & Wrenn, Virginia E.
Object Type:
Report
System:
The UNT Digital Library
National Safety Competition of 1942
Report issued by the U.S. Bureau of Mines on its annual safety contest between mine workers. Different types of mines enrolled in the competition and the winners and honorable mentions for 1942 are presented. This report includes tables.
Date:
October 1943
Creator:
Adams, William Waugh & Lawrence, T. D.
Object Type:
Report
System:
The UNT Digital Library
A Subpress for Compressive Tests
"A subpress for compressive tests is described. The subpress was designed primarily for use in developing and investigating methods for testing thin sheet metal in compression. Provision was made for testing fixed-end and flat-end specimens with or without various types of lateral support against buckling. Compressive stress-strain data for a sheet of 0.032-inch 24S-RT aluminum alloy were obtained with the subpress by the pack method and by the single-thickness method" (p. 1).
Date:
December 1943
Creator:
Aitchison, C. S. & Miller, James A.
Object Type:
Report
System:
The UNT Digital Library
Tensile and Compressive Tests of Magnesium Alloy J-1 Sheet
Note presenting tensile and compressive stress-strain curves, stress-deviation curves, and secant modulus-stress curves for longitudinal and transverse specimens of magnesium alloy J-1 sheets 0.032 and 0.102 inch thick. Significant differences were found between the tensile and compressive stress-strain curves and between the compressive stress-strain curves for the longitudinal and transverse questions.
Date:
December 1943
Creator:
Aitchison, C. S. & Miller, James A.
Object Type:
Report
System:
The UNT Digital Library
Metal Hydrides Final Report
None
Date:
July 26, 1943
Creator:
Alexander, P. P.
Object Type:
Report
System:
The UNT Digital Library
The Production of Uranium Metal by Metal Hydrides Incorporated
Metal Hydrides Incorporated was a pioneer in the production of uranium metal on a commercial scale and supplied it to all the laboratories interested in the original research, before other methods for its production were developed. Metal Hydrides Inc. supplied the major part of the metal for the construction of the first experimental pile which, on December 2, 1942, demonstrated the feasibility of the self-sustaining chain reaction and the release of atomic energy.
Date:
January 1, 1943
Creator:
Alexander, P. P.
Object Type:
Report
System:
The UNT Digital Library
The Production of Uranium Metal by Metal Hydrides Incorporated
Synopsis: Metal Hydrides Incorporated was a pioneer in the production of uranium metal on a commercial scale and supplied it to all the laboratories interested in the original research, before other methods for its production were developed. Metal Hydrides Inc. supplied the major part of the metal for the construction of the first experimental pile which, on December 2, 1942, demonstrated the feasibility of the self-sustaining chain reaction and the release of atomic energy.
Date:
1943
Creator:
Alexander, P. P.
Object Type:
Report
System:
The UNT Digital Library
Notes on the Effect of Surface Distortions on the Drag and Critical Mach Number of Airfoils
"The effect of two-dimensional bumps and surface waviness on the pressure distribution over airfoils is considered. It is shown that the results of the analysis may be useful in evaluating the effects of accidental or intended surface distortions on the drag and critical Mach number of airfoils" (p. 1).
Date:
September 1943
Creator:
Allen, H. Julian
Object Type:
Report
System:
The UNT Digital Library
A method for calculating heat transfer in the laminar flow region of bodies
This report has been prepared to provide a practical method for determining the chordwise distribution of the rate of heat transfer from the surface of a wing or body of revolution to air. The method is limited in use to the determination of heat transfer from the forward section of such bodies when the flow is laminar. A comparison of the calculated average heat-transfer coefficient for the nose section of the wing of a Lockheed 12-A airplane with that experimentally determined shows a satisfactory agreement. A sample calculation is appended.
Date:
1943
Creator:
Allen, H. Julian & Look, Bonne C.
Object Type:
Report
System:
The UNT Digital Library
The Effect of Compressibility on the Growth of the Laminar Boundary Layer on Low-Drag Wings and Bodies
The development of the laminar boundary layer in a compressible fluid is considered. Formulas are given for determining the boundary-layer thickness and the ratio of the boundary-layer Reynolds number to the body Reynolds number for airfoils and bodies of revolution. It is shown that the effect of compressibility will profoundly alter the Reynolds number corresponding to the upper limit of the range of the low-drag coefficients.
Date:
January 1943
Creator:
Allen, H. Julian & Nitzberg, Gerald E.
Object Type:
Report
System:
The UNT Digital Library
Americans suffer when careless talk kills!
Color illustration of an older man in overalls, with his arm around a weeping older woman in a simple dress and apron. The woman holds a "Western Union" telegram and wipes her tears with her apron skirt. On the wall behind them hangs a service flag with a blue star centered on a white background, with a red border. (A blue star signifies a family member who is alive and serving in the war.)
Date:
1943
Creator:
Anderson, Harry Martin
Object Type:
Poster
System:
The UNT Digital Library
Wind Tunnel Tests of Ailerons at Various Speeds 4: Ailerons of 0.20 Airfoil Chord and True Contour With 0.35 Aileron-Chord Extreme Blunt-Nose Balance on the NACA 23012 Airfoil
Report presenting tests made on an NACA 23012 airfoil fitted with a 20-percent-chord, true-contour aileron with 35-percent-chord, extreme blunt-nose balance. The primary purpose of the investigation was to determine the variation of the aerodynamic characteristics of this type of aileron with airspeed; the effect of variations of gap width and balance-nose radii was also investigated. Results regarding hinge moments, lift, and pitching-moment coefficients are provided.
Date:
August 1943
Creator:
Anderson, R. A.
Object Type:
Report
System:
The UNT Digital Library
Pressure distribution measurements on various surfaces of a 0.2375-scale model of the Douglas XA-26 airplane in the 19-foot pressure tunnel
Report presenting pressure-distribution measurements on a scale model of the Douglas XA-26 airplane as obtained in the 19-foot pressure tunnel. The measurements were made on the spinner-cowl-nacelle assembly and the fuselage for a range of angles of yaw and angles of attack.
Date:
October 1943
Creator:
Ashworth, C. Dixon
Object Type:
Report
System:
The UNT Digital Library
For freedom's sake : buy war bonds.
Small color poster promoting war bonds. In the foreground is an image of the Concord Minute Man statue (a sculpture by Daniel Chester French in Concord, Massachusetts). In the background is a town landscape.
Date:
1943
Creator:
Atherton, John, 1900-1952
Object Type:
Poster
System:
The UNT Digital Library
For freedom's sake: buy war bonds.
Color poster promoting war bonds. In the foreground is an image of the Concord Minute Man statue (a sculpture by Daniel Chester French in Concord, Massachusetts). In the background is a town landscape.
Date:
1943
Creator:
Atherton, John, 1900-1952
Object Type:
Poster
System:
The UNT Digital Library
A simplified chart for determining Mach number and true airspeed from airspeed-indicator readings
"The determination of flight Mach number from measurements of indicated airspeed and pressure altitude is shown to be relatively simple and leads to direct and accurate computation of true airspeed. A simplified chart is presented for determining flight Mach number and true airspeed for a range of values of indicated airspeed, pressure altitude, and air temperature. A table of standard atmospheric values is included" (p. 1).
Date:
March 1943
Creator:
Baals, Donald D. & Ritchie, Virgil S.
Object Type:
Report
System:
The UNT Digital Library
Flight Investigation of NACA D(Sub S) Cowlings on the XP-42 Airplane 1: High-Inlet-Velocity Cowling with Propeller Cuffs Tested in High-Speed Level Flight
Report presenting results from a series of flight tests of the maximum speed and cooling characteristics in full-throttle level flight of the XP-42 airplane equipped with a short-nose high-inlet velocity cowling. The results of the tests indicated a maximum speed of 336 miles per hour at 960 horsepower at 25,000 feet. Results regarding maximum speed and pressure and temperatures are provided.
Date:
January 1943
Creator:
Bailey, F. J., Jr.
Object Type:
Report
System:
The UNT Digital Library
Save your cans : help pass the ammunition : prepare your tin cans for war ....
An woman's arm holding a tomato can appears on the bottom right side of the poster. The can image is repeated and runs into the painting. As the cans get smaller, they change into a chain of bullets that a soldier is feeding into his gun. In the background are a large red explosion and an airplane falling from the sky.
Date:
1943
Creator:
Barclay, McClelland.
Object Type:
Poster
System:
The UNT Digital Library
Geology of the Portage Pass Area, Alaska
Abstract: The Portage Pass area is in south-central Alaska, and includes part of the narrow neck of land that joins the Kenai Peninsula with the mainland to the north. This region is in general mountainous, elevations ranging from sea level to more than 4,000 feet on the peaks bordering the area. Several glaciers, all of which are apparently receding, extend into the area. Vegetation, chiefly alder and cottonwood on the valley lowlands and some spruce and hemlock on the lower slopes, extends to an elevation of about 1,000 feet, above which the slopes are bare except for occasional clumps of brush. The bedrock of the entire area is slate, argillite, and graywacke, apparently part of the same great series that extends from the Kenai Peninsula into the Prince William Sound region and is at least in part of Cretaceous age. The only igneous rocks recognized in the area are a few acidic dikes and a small diabase dike. Small, irregular quartz veinlets are widespread. The structure is not only complex but, owing to extensive metamorphism, is in many places obscure. A general northeast strike and steep to vertical dips of both bedding and cleavage planes are the rule, but there …
Date:
1943
Creator:
Barnes, Farrell F.
Object Type:
Report
System:
The UNT Digital Library