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open access

Engineer soldier's handbook.

Description: Describes the tools and tasks of the engineer soldier. Includes a proficiency test for soldiers in training.
Date: June 2, 1943
Creator: United States. War Department.
Partner: UNT Libraries Government Documents Department
open access

Investigation of the aerodynamic and icing characteristics of a recessed fuel cell vent assembly 3: NACA flush-inlet-type vent

Description: An investigation conducted in the icing research tunnel to determine aerodynamic and icing characteristics of two flush-inlet-type fuel cell vent installations. The vent tubes were mounted in two different locations in the two installations. The vents were aerodynamically investigated to obtain vent-tube static-pressure differentials and pressure surveys as a function of tunnel-air velocity and angle of attack.
Date: April 23, 1948
Creator: Ruggeri, Robert S.
Partner: UNT Libraries Government Documents Department
open access

Drag and Propulsive Characteristics of Air-Cooled Engine-Nacelle Installations for Large Airplane

Description: "An investigation was conducted in the NACA full-scale wind tunnel to determine the drag and the propulsive efficiency of nacelle-propeller arrangements for a large range of nacelle sizes. In contrast with usual tests with a single nacelle, these tests were conducted with nacelle-propeller installations on a large model of a four-engine airplane. Data are presented on the first part of the investigation, covering seven nacelle arrangements with nacelle diameters from 0.53 to 1.5 times the wing … more
Date: 1942
Creator: Silverstein, Abe & Wilson, Herbert A., Jr.
Partner: UNT Libraries Government Documents Department
open access

Summary of Data Relating to the Effects of Wing Machine-Gun and Cannon Installations on the Aerodynamic Characteristics of Airplanes

Description: Report presenting data obtained from tests of models and airplanes relating to the effects of various wing armament installations, which have been collected and analyzed. Three types of gun installations were considered: gun ports, protruding machine guns, and cannon. The ways that each type of installation affected the lift and drag characteristics are provided.
Date: January 1945
Creator: Quinn, John H., Jr.
Partner: UNT Libraries Government Documents Department
open access

Ground Tests of a Radial Air-Cooled Engine to Correct a Poor Circumferential Pressure-Recovery Distribution

Description: "This report presents the results of the tests of a power-plant installation to improve the circumferential pressure-recovery distribution at the face of the engine. An underslung "C" cowling was tested with two propellers with full cuffs and with a modification to one set of cuffs. Little improvement was obtained because the base sections of the cuffs were stalled. A set of guide vanes boosted the over-all pressures and helped the pressure recoveries for a few of the cylinders" (p. 1).
Date: January 28, 1948
Creator: Gallagher, James J.
Partner: UNT Libraries Government Documents Department
open access

Design of power-plant installations pressure-loss characteristics of duct components

Description: "A correlation of what are believed to be the most reliable data available on duct components of aircraft power-plant installations is presented. The information is given in a convenient form and is offered as an aid in designing duct systems and, subject to certain qualifications, as a guide in estimating their performance. The design and performance data include those for straight ducts; simple bends of square, circular, and elliptical cross sections; compound bends; diverging and converging … more
Date: June 1944
Creator: Henry, John R.
Partner: UNT Libraries Government Documents Department
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