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Newsmap. Monday, May 17, 1943 : week of May 7 to May 14, 192nd week of the war, 74th week of U.S. participation

Description: Front: Text describes action on various war fronts: North Africa, Southwest Pacific, China-Burma, Plans, Aleutians, Russia Large world map is keyed to text and shows United Nations, Axis and Axis occupied areas, countries with Axis relations broken, and neutral countries. Inset maps: Shrinking battle lines in Tunisia; Crimea and surrounding region showing Nazi held territories. Photographs: Army-Navy expedition lands at Amchitka; Army gunner sets up AA defense at the westernmost U.S. air ba… more
Date: May 17, 1943
Creator: [United States.] Army Orientation Course.
Item Type: Refine your search to only Poster

Newsmap. Monday, May 24, 1943 : week of May 13 to May 20, 193rd week of the war, 75th week of U.S. participation

Description: Front: Text describes action on various war fronts: Attu, Wake Island, Southwest Pacific, Russia, China-Burma, Air offensive. Large world map is keyed to text and shows United Nations Axis and Axis occupied areas, countries with Axis relations broken, and neutral countries. Additional maps: Mediterranean Sea; Areas held by Japan in the Kurile and Aleutian Islands. Inset map: Attu Island. Photographs: Mass production methods in the southwest Pacific mimic those of Detroit; Red Stars mark Sovie… more
Date: May 24, 1943
Creator: [United States.] Army Orientation Course.
Item Type: Refine your search to only Poster

Newsmap. Monday, May 31, 1943 : week of May 20 to May 27, 194th week of the war, 76th week of U.S. participation

Description: Front: Text describes action on various war fronts: Aleutians, Western Europe, Mediterranean, Russia, Southwest Pacific. Map: Shows military activity in western Europe during the week of May 10 to May 27, 1943. Inset maps: Aleutians, Present fighting area in Attu. Photographs: Images of a Grumman "Wildcat" fighter plane taken from the escort carrier, U.S.S. Altamaha. Illustration: Advance on Attu. Back: You can crack that tank! Text and illustrations show how an infantryman can defend a… more
Date: May 31, 1943
Creator: [United States.] Army Orientation Course.
Item Type: Refine your search to only Poster
open access

On the Multiplication Constant of Homogeneous Mixtures of U with Various Moderators

Description: The following represents a summary of calculations on the multiplication constant of homogeneous mixtures of uranium and different moderators. These calculations were made possible by Fermi's determination of the age of neutrons and by the extrapolation to higher scattering cross-sections of the resonance absorption of uranium as measured by C. Creutz. According to Fermi, the former quantity is 120 sq. cm. The latter is given in the two attached graphs. The first (Fig.1) of these goes as high a… more
Date: May 16, 1943
Creator: Wigner, Eugene Paul, 1902-1995 & Stephenson, J.
Item Type: Refine your search to only Report
open access

Production of (Uranium) Tetrafluoride

Description: Production of tetrafluoride for the month of April was 49,400. New equipment installed late in March operated smoothly and the production was slightly over the rated capacity of the plant. Nickel ends were welded on to the steel reactor tubes to prevent corrosion at the cover joint and possible contamination of the product with iron. The nickel ends will also save considerable repair work on the tube ends. The magnesium trays for some of the reactors are beginning to crack at the sides from fre… more
Date: May 13, 1943
Creator: Long, K. E. & Swinehart, C. F.
Item Type: Refine your search to only Report
open access

Shear Tests on DuPont Explosive Rivets With the Countersunk Head Milled Flush After Expansion

Description: Report discusses the results of shear testing in which the heads of Du Pont explosive countersunk rivets were allowed to protrude above the skin surface before expansion and the protruding portions were removed after expansion. As the height of the rivet head above the skin increases, the tightness of the rivet was found to increase. The report concludes that it may be desirable to investigating filling an entire shank with an explosive charge in order to permit greater tolerances in the drille… more
Date: May 1943
Creator: Gottlieb, Robert & Bartone, Leonard M.
Item Type: Refine your search to only Report
open access

Some Effects of Reynolds and Mach Numbers on the Lift of an NACA 0012 Rectangular Wing in the NACA 19-Foot Pressure Tunnel

Description: Bulletin presenting a short investigation in the 19-foot pressure tunnel to determine the aerodynamic characteristics of a rectangular wing model constructed to NACA 0012 airfoil sections. Tests were run with the air in the tunnel at 2 different pressures: atmospheric and 35 pounds per square inch absolute.
Date: May 1943
Creator: Muse, Thomas C.
Item Type: Refine your search to only Report
open access

Tests of Exhaust Propulsion Nozzles

Description: "The thrust produced by a variety of exhaust stacks and nozzles, and the effect of these stacks and nozzles on the power of a single-cylinder R-2800 engine were investigated over a wide range of engine speeds and manifold pressures in a series of tests in the Pratt & Whitney experimental test department. From the data obtained it is possible to estimate the optimum form of nozzles and the available thrust for airplanes fitted with R-2800 engines under sea-level conditions" (p. 1).
Date: May 1943
Creator: Campbell, Paul J.
Item Type: Refine your search to only Report
open access

The Use of a Retractable Planing Flap Instead of a Fixed Step on a Seaplane

Description: Report presents and discusses the improvements in hydrodynamic and aerodynamic performance of a seaplane with a retractable planing flap instead of a conventional main step. A type of flap that could be used is described and tested for hydrodynamic stability. Results regarding the trim limits of stability, limiting positions of the center of gravity, and skipping are provided.
Date: May 1943
Creator: Benson, James M. & Lina, Lindsay J.
Item Type: Refine your search to only Report
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