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Newsmap. Monday, February 21, 1944 : week of February 10 to February 17 : 232nd week of the war, 114th week of U.S. participation

Description: Front: Text describes action on various war fronts: Italy, USSR, Western Europe, Southwest Pacific, Central Pacific, Submarines. Maps show the Gulf of Finland, Russia; Italy. Inset map shows Cassino area, Italy. Includes 11 photographs. Back: Landing Craft. Illustrations and photographs of various landing craft with descriptive text.
Date: February 21, 1944
Creator: [United States.] Army Service Forces. Morale Services Division. Army Information Branch.
Partner: UNT Libraries Government Documents Department

Preliminary Tests at Supersonic Speeds of Triangular and Swept-Back Wings

Description: Report presenting testing of a series of thin, triangular plan-form wings, including eight triangular wings of vertex angles and three swept-back wings with circular-arc sections. Results regarding lift, center of pressure, and ideal operation of different types of wings are provided.
Date: February 21, 1947
Creator: Ellis, Macon C., Jr. & Hasel, Lowell E.
Partner: UNT Libraries Government Documents Department

Investigation of High-Performance Fuels in Multicylinder and in Single-Cylinder Engines at High and Cruising Engine Speeds

Description: "An investigation was conducted to compare the knock-limited performance of a 20-percent triptane blend in 28-K fuel with that of 28-R and 33-R fuels at high engine speeds, cruising speeds, and two compression ratios in an K-1830-94 multicylinder engine. Data were obtained with the standard compression ratio of 6.7 and with a compression ratio of 3.0. The three fuels were investigated at engine speeds of 1800, 2250, 2600, and 2800 rpm at high and low blower ratios" (p. 1).
Date: February 21, 1947
Creator: Bell, Arthur H.; Nelson, R. Lee & Richard, Paul H.
Partner: UNT Libraries Government Documents Department

Calculations of the Supersonic Wave Drag of Nonlifting Wings with Arbitrary Sweepback and Aspect Ratio: Wings Swept Behind the Mach Lines

Description: "On the basis of a recently developed theory for finite sweptback wings at supersonic speeds, calculations of the supersonic wave drag at zero lift were made for a series of wings having thin symmetrical biconvex sections with untapered plan forms and various angles of sweepback and aspect ratios. The results are presented in a unified form so that a single chart permits the direct determination of the wave drag for this family of airfoils for an extensive range of aspect ratio and sweepback angle for stream Mach numbers up to a value corresponding to that at which the Mach line coincides with the wing leading edge. The calculations showed that in general the wave-drag coefficient decreased with increasing sweepback" (p. 1).
Date: February 21, 1947
Creator: Harmon, Sidney M. & Swanson, Margaret D.
Partner: UNT Libraries Government Documents Department