Collection
Texas Attorney General Opinions
1,308
Technical Report Archive and Image Library
238
National Advisory Committee for Aeronautics Collection
198
Government Documents A to Z Digitization Project
45
USDA Farmers' Bulletins
31
World War Two Collection
31
Texas State Publications
29
World War Poster Collection
26
USGS Topographic Map Collection
20
Government Documents General Collection
8
12 More
Serial/Series Title
NACA Wartime Reports
69
NACA Technical Notes
49
NACA Technical Memorandums
36
Farmers' bulletin (United States. Dept. of Agriculture)
31
NACA Advanced Restricted Reports
30
NACA Technical Reports
26
American War Posters
22
NACA Advanced Confidential Reports
21
NACA Memorandum Reports
19
NACA Special Reports
17
62 More
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1,700 Matching Results
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75-mm howitzer materiel.
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.
Date:
June 21, 1941
Creator:
United States. Army. Ordnance Department.
Object Type:
Book
System:
The UNT Digital Library
The additional-mass effect of plates as determined by experiments
From Introduction: "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."
Date:
1941
Creator:
Gracey, William
Object Type:
Report
System:
The UNT Digital Library
Additional power-on wind-tunnel tests of the 1/8-scale model of the Brewster F2A airplane with full-span slotted flaps
"Additional tests as recommended in reference 1 were made in the 7- by 10-foot wind tunnel of the 1/8-scale model of the Brewster F2A airplane to determine the angle of attack of horizontal tail and the elevator angles required for trim with flaps down" (p. 1).
Date:
October 1941
Creator:
Lowry, John G.
Object Type:
Report
System:
The UNT Digital Library
Aerial photography.
A training manual designed to teach aerial photography for military purposes.
Date:
July 8, 1941
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Aerodynamic Characteristics of a Slot-Lip Aileron and Slotted Flap for Dive Brakes
From Introduction: "As a part of this investigation, a study is being made of test results obtained during the development of devices designed primarily for other purposes, such as high lift or lateral control, but which may also be used for dive control. These results have been reanalyzed and are herein presented in a form that should make them convenient for design purposes."
Date:
April 1941
Creator:
Rogallo, F. M.
Object Type:
Report
System:
The UNT Digital Library
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
Report presenting a study of the aerodynamic factors upon which the ability to perform the maneuver depends in an attempt to obtain a better understanding of the conditions involved and, if possible, to evolve criterions that may be used during design.
Date:
October 1941
Creator:
Harmon, S. M.
Object Type:
Report
System:
The UNT Digital Library
The aerodynamics of a wind-tunnel fan
From Introduction: "This paper deals only with the aerodynamics of the fan proper and demonstrates the manner in which the radial distribution of axial velocity of fluid through a fan is governed by geometry of the fan itself."
Date:
August 1941
Creator:
Corson, Blake W.
Object Type:
Report
System:
The UNT Digital Library
Air Transport by Gliders: Some Technical Observations
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.
Date:
June 1941
Creator:
Stepniewski, Wieslaw
Object Type:
Report
System:
The UNT Digital Library
Airplane structures.
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.
Object Type:
Book
System:
The UNT Digital Library
Airship aerodynamics.
"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.
Object Type:
Book
System:
The UNT Digital Library
Almeda Quadrangle
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:31680
Date:
1941
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Aluminum-Zinc-Magnesium-Copper Casting Alloys
From Introduction: "This paper contains data on the mechanical properties of sand-cast test bars having a considerable range in zinc, magnesium, and copper content and more detailed data on the properties and foundry characteristics of an aluminum-zinc-magnesium-copper alloy having a preferred composition for high strength and ductility."
Date:
July 1941
Creator:
Kempf, L. W.
Object Type:
Report
System:
The UNT Digital Library
America calling : take your place in civilian defense.
Red and white text, with a civil defense insignia in the middle of the poster. Civil Defense insignia is a red "CD" in white triangle on a blue circle.
Date:
1941
Creator:
Matter, Herbert, 1907-1984.
Object Type:
Poster
System:
The UNT Digital Library
Analyses of Washington Coals: Supplement to Technical Paper 491
Report issued by the Bureau of Mines discussing the technological advances made in the mining industry between 1931 and 1941. Mechanized methods for mining operations are presented. This report includes tables, illustrations, and a map.
Date:
1941
Creator:
Yancey, H. F. & Geer, M. R.
Object Type:
Report
System:
The UNT Digital Library
Analysis of Ground Effect on the Lifting Airscrew
"A study is presented of ground effect as applied to the lifting airscrew of the type used in modern gyroplanes and helicopters. The mathematical analysis of the problem has been verified by tests made of three rotor models in the presence of a large circular "ground plane." The results of the study are presented in the form of convenient charts" (p. 1).
Date:
December 1941
Creator:
Knight, Montgomery & Hefner, Ralph A.
Object Type:
Report
System:
The UNT Digital Library
Analytical Determination of Control System Pulley-Axis Angles
From Introduction: "The ideas developed in this paper are presented as a means of saving the designer's time and as a method of reduction of control-system friction by an accurate calculation of pulley-axis angles without the errors and difficult checking incident to any graphical method."
Date:
September 1941
Creator:
Driggs, I. H.
Object Type:
Report
System:
The UNT Digital Library
An analytical study of wing and tail loads associated with an elevator deflection
From Introduction: "The present paper covers step 1 of the outlined investigation, includes methods of computing the variation of wing and tail loads, and gives numerical results of the application of the theory to the BT-9B airplane. Finally, theoretical formulas are developed and charts are given for computing the maximum increments of wing load, the down-tail load, and the up-tail load following a given elevator displacement."
Date:
June 1941
Creator:
Pearson, H. A. & Garvin, J. B.
Object Type:
Report
System:
The UNT Digital Library
The Angora goat.
Describes the characteristics, benefits, and uses of the Angora goat. Discusses methods of managing goats on the range.
Date:
1941
Creator:
Williams, G. P. & Spencer, D. A. (Damon Alvin), 1887-
Object Type:
Book
System:
The UNT Digital Library
Annual Report of Research and Technologic Work on Coal: Fiscal Year 1941
Report issued by the U.S. Bureau of Mines discussing the annual report over the research and technology of coal during 1941. As stated in the foreword, "these investigations increase our fund of exact knowledge on the properties and composition of American coals and lead to better methods in mining, preparing, storing, and utilizing coal" (p. 4). This report includes tables, illustrations, photographs, and a map.
Date:
November 1941
Creator:
Fieldner, Arno Carl & Schmidt, L. D.
Object Type:
Report
System:
The UNT Digital Library
Annual Report of the Boy Scouts of America: 1940
Annual report submitted by the Boy Scouts of America to Congress describing highlights from 1940, activities, organizational leadership, and other information about scouting programs.
Date:
March 23, 1941
Creator:
Boy Scouts of America
Object Type:
Report
System:
The Portal to Texas History
Annual Report of the Mining Division, Fiscal Year 1941
Report issued by the U.S. Bureau of Mines on the annual study of the work done by the Mining Division. Investigations, operations, and projects completed during the fiscal year are discussed. This report includes tables, and photographs.
Date:
November 1941
Creator:
Jackson, Charles F.
Object Type:
Report
System:
The UNT Digital Library
Annual Report of the National Advisory Committee for Aeronautics (26th). Administrative Report Including Technical Report Nos. 681 to 703
Report includes the National Advisory Committee for Aeronautics letter of submittal to the President, summaries of the committee's activities and research accomplished, bibliographies, and financial report.
Date:
1941
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
An apparatus for measuring rates of discharge of a fuel-injection system
From Introduction: "An apparatus that gives a quick and an accurate measurement of the rate of discharge has been has been designed by the NACA and is described in this report."
Date:
March 24, 1941
Creator:
Dutee, Francis J.
Object Type:
Report
System:
The UNT Digital Library
"Arise Americans" : your country and your liberty are in grave danger -- protect them now by joining the-- United States Navy or the U.S. Naval Reserve.
A sailor in a white uniform uses a wrench on a large weapon or equipment. A blue border with white stars surrounds the top and sides of the picture. The bottom half of the poster is red, with white and blue text.
Date:
June 18, 1941
Creator:
Barclay, McClelland.
Object Type:
Poster
System:
The UNT Digital Library