UNT Libraries Government Documents Department - 337 Matching Results

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Keep 'em rolling! [PT boats]

Description: Black & white photographs superimposed on a U.S. flag design. In the blue area of the flag is a photograph of a group of men wearing welding helmets and carrying lanterns on long cords over their shoulders. In the striped area of the flag are photographs of PT boats.
Date: 1941
Creator: Lionni, Leo, 1910-1999.
Item Type: Refine your search to only Poster

Keep 'em rolling! [tanks]

Description: Black & white photographs superimposed on a U.S. flag design. In the blue area of the flag is a photograph of a welder at work. In the striped area of the flag are photographs of a military tank with a soldier aiming a gun from the top of the tank.
Date: 1941
Creator: Lionni, Leo, 1910-1999.
Item Type: Refine your search to only Poster

Keep 'em rolling! [planes]

Description: Black & white photographs superimposed on a U.S. flag design. In the blue area of the flag is a photograph of a mechanic working on an airplane propeller. In the striped area of the flag are photographs of U.S. Army airplanes flying.
Date: 1941
Creator: Lionni, Leo, 1910-1999.
Item Type: Refine your search to only Poster
open access

Comparison of Vee-Type and Conventional Tail Surfaces in Combination with Fuselage and Wing in the Variable-Density Tunnel

Description: "The pitching and the yawing moments of a vee-type and a conventional type of tail surface were measured. The tests were made in the presence of a fuselage and a wing-fuselage combination in such a way as to determine the moments contributed by the tail surfaces" (p. 1).
Date: July 1941
Creator: Greenberg, Harry
Item Type: Refine your search to only Report
open access

The Calculation of Span Load Distributions of Swept-Back Wings

Description: "Span load distributions of swept-back wings have been calculated. The method used was to replace the wing with a bound vortex at the quarter-chord line and to calculate the downwash due to the system of bound and trailing vortices to conform at the three-quarter-chord line to the slope of the flat-plate wing surface. Results are given for constant-chord and 5:1 tapered plan forms, for sweep-back angles of 0 degrees, 30 degrees, and 45 degrees, and for aspect ratios of 3, 6, and 9" (p. 1).
Date: December 1941
Creator: Mutterperl, William
Item Type: Refine your search to only Report
open access

Methods of Analyzing Wind-Tunnel Data for Dynamic Flight Conditions

Description: "The effects of power on the stability and the control characteristics of an airplane are discussed and methods of analysis are given for evaluating certain dynamic characteristics of the airplane that are not directly discernible from wind-tunnel tests alone. Data are presented to show how the characteristics of a model tested in a wind tunnel are affected by power. The response of an airplane to a rolling and a yawing disturbance is discussed, particularly in regard to changes in wing dihedra… more
Date: October 1941
Creator: Donlan, C. J. & Recant, I. G.
Item Type: Refine your search to only Report

China fights on.

Description: A Chinese man in military uniform and cap looks toward the sky. Several tiny planes circle him. The planes and his cap bear the 12-pointed sun symbol of the Chinese forces. Near the right edge of the poster are four Chinese characters in red. The characters roughly translate as "Unite Against the Enemy and Rebuild Our Nation."
Date: [1941..1946]
Creator: Gaydos.
Item Type: Refine your search to only Poster

United we stand.

Description: Banner with U.S. Seal at each end, within red squares. The central portion of the banner is white with the text "United We Stand" in red.
Date: 1941
Creator: United States. Office for Emergency Management. Division of Information.
Item Type: Refine your search to only Poster

Bonds or bondage : everybody--every pay day 10%.

Description: Image of a man in cap and overalls, with outstretched arms and legs. In one hand he holds a U.S. flag; his other hand and leg are chained to a swastika-inscribed ball. One side of his face smiles; the other side is weary. The poster background is also split in two halves: On the left is a landscape of farm lands, industrial smoke stacks, and skyscrapers; on the right is a dark barren landscape.
Date: 1941/1942?
Item Type: Refine your search to only Poster

Soil conservation is vital to you.

Description: On the right is an aerial photo of farmland. Below the photo are three pamphlets about soil conservation, with a box reading "Many government pamphlets are available on request." On the left is the title and above the title a blank box with small letters reading, "Use this space to list your available reading material."
Date: 1941
Creator: United States. Soil Conservation Service.
Item Type: Refine your search to only Poster

"We did it then, we will do it again" : beat the promise.

Description: This poster depicts an army of workers marching from "1919" to "1941" alluding to America's military intervention in the First World War and tracing that heritage to the Second World War. In the center is an image of a 1919 letter from Franklin D. Roosevelt, then Acting Secretary of the Navy, to Eldridge R. Johnson, President of Victor Talking Machine Company.
Date: 1941/1942?
Item Type: Refine your search to only Poster
open access

Airship aerodynamics.

Description: "This manual is designed as a text for the instruction of airship student pilots .... to give the knowledge of aerodynamics essential to the operation of [lighter than air aircraft]."(Page 2.)
Date: February 11, 1941
Creator: United States. War Department.
Item Type: Refine your search to only Book

Keep 'em rolling! [guns]

Description: Black & white photographs superimposed on a large U.S. flag design. In the blue area of the flag is a photograph of a man in a shirt and tie, who appears to be working on or using a gun sight. In the red striped areas of the flag are photographs of a group of soldiers operating a large artillery gun.
Date: 1941
Creator: Lionni, Leo, 1910-1999.
Item Type: Refine your search to only Poster
open access

Supplement to Comparison of Automatic Control Systems

Description: "This analysis deals with the indirect regulator, wherefrom the behavior of the direct regulator is deduced as a limiting case. The prime mover is looked upon as "independent of the load": a change in the adjusting power (to be applied) for the control link (as, for example, in relation to the adjusting path (eta) with pressure valves or the rudder of vessels) does not modify the actions of the prime mover. Mass forces and friction are discounted; "clearance" also is discounted in the transmiss… more
Date: August 1941
Creator: Oppelt, W.
Item Type: Refine your search to only Report
open access

Effects of Some Present-Day Airplane Design Trends on Requirements for Lateral Stability

Description: Note presenting computations made to determine the effects of some airplane design trends on the fin area and the dihedral angle required for lateral stability. The specific factors studied were wing loading, moments of inertia in roll and yaw, wing chord, and tail length. The results of the computations are presented in the form of diagrams of variations of fin area with dihedral angle for neutral stability.
Date: June 1941
Creator: Bamber, Millard J.
Item Type: Refine your search to only Report
open access

Orientation

Description: Provides a text and reference book covering the principles of orientation. Orientation is defined as "the accurate location of datum points and the establishment of lines of known length and direction".
Date: July 15, 1941
Creator: United States. War Department.
Item Type: Refine your search to only Book
open access

Airplane structures.

Description: Describes structural details of service airplanes used by the Army Air Corps, sufficient for personnel to perform inspection and maintenance of their equipment.
Date: October 29, 1941
Creator: United States. War Department.
Item Type: Refine your search to only Book
open access

Design of Nozzles for the Individual Cylinder Exhaust Jet Propulsion System

Description: Report presenting an examination of the design of exhaust-stack nozzles for individual cylinder exhaust-gas jet propulsion and the results of tests on the effect of nozzle area on jet thrust and engine power. A satisfactory method of correlatig the test data for various engine-operating conditions is developed.
Date: April 1941
Creator: Pinkel, Benjamin; Turner, L. Richard & Voss, Fred
Item Type: Refine your search to only Report
open access

Spin Tests of Two Models of a Low-Wing Monoplane to Investigate Scale Effect in the Model Test Range

Description: Note presenting testing performed on scale models of a modern low-wing monoplane in the 15-foot free-spinning wind tunnel. Results are presented in the form of charts that afford a direct comparison between the spins of the two models for a number of different conditions. The results indicate that, within the range of Reynolds numbers used in the present investigation, such factors as difficulty of ballasting and testing are more important in determining proper model size than the changes in sc… more
Date: May 1941
Creator: Donlan, Charles J.
Item Type: Refine your search to only Report
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