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The effect of mass distribution on the lateral stability and control characteristics of an airplane as determined by tests of a model in the free-flight tunnel

Description: The effects of mass distribution on lateral stability and control characteristics of an airplane have been determined by flight tests of a model in the NACA free-flight tunnel. In the investigation, the rolling and yawing moments of inertia were increased from normal values to values up to five times normal. For each moment-of-inertia condition, combinations of dihedral and vertical-tail area representing a variety of airplane configurations were tested. The results of the flight tests of the m… more
Date: July 20, 1943
Creator: Campbell, John P. & Seacord, Charles L., Jr.
Item Type: Refine your search to only Report

Newsmap. Monday, December 20, 1943 : week of December 9 to December 16, 223rd week of the war, 105th week of U.S. participation

Description: Front: Text describes action on various war fronts: Southwest Pacific, Central Pacific, China, USSR, Italy, Air offensive, Submarines. Inset maps: Southeast Europe, Central China battle area. Photographs: U.S. Army engineers replace a bridge in Italy, Antiaircraft fire from a U.S. carrier, Brazilian ground and air troops, Turkish officials, "Rome or Death." Back: Text and photographs illustrate the battle for the Gilbert Islands.
Date: December 20, 1943
Creator: [United States.] Army Orientation Course.
Item Type: Refine your search to only Poster

Newsmap. Monday, September 20, 1943 : week of September 9 to September 16, 210th week of the war, 92nd week of U.S. participation

Description: Front: Text describes action on various war fronts: Italy, Italian fleet, Mussolini, Russia, Rhodes, New Guinea, Paramushiro. Inset maps of Eastern Europe from France to Turkey and of Papua, Northeast New Guinea and New Britain. Includes photographs and captions "released by the Nazis and received in the United States through neutral Portugal and Sweden." Back: Battleground in Italy. Map of Italy with inset map of the countries surrounding Italy.
Date: September 20, 1943
Creator: [United States.] Army Orientation Course.
Item Type: Refine your search to only Poster
open access

Review of Flight Tests of NACA C and D Cowlings on the XP-42 Airplane

Description: "Results of flight tests of the performance and cooling characteristics of three NACA D cowlings and of a conventional NACA D cowling on the XP-42 airplane are summarized and compared. The D cowling is, in general, characterized by the use of an annular inlet and diffuser section for the engine-cooling air. The D cowlings tested were a long-nose high-inlet-velocity cowling, a short-nose high-inlet-velocity cowling, and a short-nose low inlet-velocity cowling" (p. 371).
Date: April 20, 1943
Creator: Johnston, J. Ford
Item Type: Refine your search to only Report
open access

Studies on the Determination of Carbon by the Low Pressure Combustion Method

Description: Technical report: The apparatus for the low pressure combustion method of determining carbon in iron and steel has be redesigned to increase the speed of manipulation. It has been tested by running several thousand determinations and found to yield results in good agreement with Wooten's form of the apparatus. A detailed description of the equipment and its manipulation is given together with an account of experimental studies on the method. Results are also shown for the carbon content of c… more
Date: October 20, 1943
Creator: Murray, W M., Jr. & Ashley, S E. Q.
Item Type: Refine your search to only Report
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