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  Partner: UNT Libraries Government Documents Department
 Decade: 1940-1949
 Year: 1941
75-mm howitzer materiel.

75-mm howitzer materiel.

Date: June 21, 1941
Creator: United States. Army. Ordnance Dept.
Description: This is a World War II-era technical manual for the 75mm Howitzer. It contains information on use, maintenance, assembly, and other aspects of this weapon.
Contributing Partner: UNT Libraries Government Documents Department
The additional-mass effect of plates as determined by experiments

The additional-mass effect of plates as determined by experiments

Date: January 1, 1941
Creator: Gracey, William
Description: The apparent increase in the inertia properties of a body moving in a fluid medium has been called the additional-mass effect. This report presents a resume of test procedures and results of experimental determinations of the additional-mass effect of flat plates. In addition to data obtained from various foreign sources and from a NACA investigation in 1933, the results of tests recently conducted by the National Advisory Committee for Aeronautics are included.
Contributing Partner: UNT Libraries Government Documents Department
Additional power-on wind-tunnel tests of the 1/8-scale model of the Brewster F2A airplane with full-span slotted flaps

Additional power-on wind-tunnel tests of the 1/8-scale model of the Brewster F2A airplane with full-span slotted flaps

Date: October 1, 1941
Creator: Lowry, John G
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Aerial photography.

Aerial photography.

Date: July 8, 1941
Creator: United States. War Dept.
Description: A training manual designed to teach aerial photography for military purposes.
Contributing Partner: UNT Libraries Government Documents Department
Aerodynamic characteristics of a slot-lip aileron and slotted flap for dive brakes

Aerodynamic characteristics of a slot-lip aileron and slotted flap for dive brakes

Date: April 1, 1941
Creator: Rogallo, F M
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Aerodynamic factors affecting the ability of a pilot to return an airplane to level from a banked attitude by use of the rudder alone and without change of heading

Aerodynamic factors affecting the ability of a pilot to return an airplane to level from a banked attitude by use of the rudder alone and without change of heading

Date: October 1, 1941
Creator: Harmon, S M
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The aerodynamics of a wind-tunnel fan

The aerodynamics of a wind-tunnel fan

Date: January 1, 1941
Creator: Corson, Blake W
Description: The vortex blade-element theory modified to apply to an axial fan working in a duct is reviewed. Thrust and power coefficients for a fan are identified with the corresponding coefficients for airplane propellers. The relation of pressure produced by the fan to the blade-element coefficients is developed. The distribution of axial velocity of fluid through a fan is assumed to be controlled by the fan itself. The radial distribution of tangential velocity imported by the fan to fluid moving through the fan is shown to be independent of the axial-velocity distribution. A nondimensional coefficient, designated the rotation constant, is introduced. This constant is based solely upon design information. The use of the rotation constant in simplifying the design of a fan for a specific operating condition is demonstrated. Based on the use of the rotation constant, a graphical method is outlined by which the performance of a given fan in a given wind tunnel may be predicted and by which the distributions of axial velocity of the fluid through the fan under various operating conditions may be established.
Contributing Partner: UNT Libraries Government Documents Department
Air transport by gliders : some technical observations

Air transport by gliders : some technical observations

Date: June 1, 1941
Creator: Stepniewski, Wieslaw
Description: This short analysis may be useful in determining the real tactical possibilities of "glider trains" and in adopting the course to be followed in possible studies of these questions. In this analysis most prominent are: (a) the power required for the train in level flight; (b) its speed; (c) climb; and (d) the type of airplane best suited for towing as well as design requirements for transport gliders.
Contributing Partner: UNT Libraries Government Documents Department
Airplane structures.

Airplane structures.

Date: October 29, 1941
Creator: United States. War Dept.
Description: Describes structural details of service airplanes used by the Army Air Corps, sufficient for personnel to perform inspection and maintenance of their equipment.
Contributing Partner: UNT Libraries Government Documents Department
Airship aerodynamics.

Airship aerodynamics.

Date: February 11, 1941
Creator: United States. War Dept.
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.)
Contributing Partner: UNT Libraries Government Documents Department
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