Resource Type
Collection
Technical Report Archive and Image Library
428
National Advisory Committee for Aeronautics Collection
346
Texas Attorney General Opinions
263
Office of Scientific & Technical Information Technical Reports
96
TRAIL Microcard Collection
53
World War Two Collection
20
Government Documents A to Z Digitization Project
18
Texas State Publications
16
World War Two Newsmaps
14
Texas Soil Surveys
2
3 More
Serial/Series Title
Country
States
840 Matching Results
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Quartermaster operations.
Describes the organization and functions of the U.S. Army Quartermaster Corps.
Date:
April 29, 1943
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Tank destroyer, towed gun platoon.
Describes the organization, tactics, and techniques of the towed tank destroyer platoon.
Date:
April 1, 1944
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Criminal investigation.
Describes procedures for criminal investigations conducted by military police during wartime. Discusses the purposes and functions of the Security Intelligence Corps (SIC).
Date:
April 1945
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Browning machine gun caliber .50, M2, aircraft, fixed and flexible.
"In addition to a description of the Browning machine gun, caliber .50, M2, aircraft, fixed and flexible, this manual contains technical information required for the identification, use, and care of the materiel."
Date:
April 30, 1942
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
20-MM aircraft gun matériel M1 and M2.
"In addition to a description of the 20-mm aircraft gun matériel M1 and M2, this manual contains technical information required for the identification, use, and care of the matériel."
Date:
April 2, 1942
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Coal handling : repairs and utilities
"This Technical Manual describes uniform methods of coal handling for Army posts, camps, and stations. Methods are presented to insure efficient and economical operation, based on accepted commercial practices adapted to meet requirements of Army installations."
Date:
April 1947
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Electrical facilities : generating plants, repairs and utilities
"This Technical Manual describes the various types of electric generating equipment used on Army posts and discusses its operation, maintenance, and repair."
Date:
April 1945
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Lesson plans on practical firemanship.
"This Technical Manual is a guide to assist those who train post firefighters. It consists of a series of lesson plans covering each phase of firemanship, and a brief explanation of how to use the plans."
Date:
April 1946
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Pneumatic ponton bridge M3
Discusses the purpose and usage of the pneumatic pontoon bridge M3 by infantry in the field. Covers construction, deployment, and maintenance.
Date:
April 19, 1943
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Wind-Tunnel Investigation of Icing of an Engine Cooling-Fan Installation
Note presenting an investigation of the icing characteristics and means of ice protection of a typical radial-engine cooling-fan installation. The icing of the unprotected cooling-fan installation was found to present a serious operational problem. Results regarding icing, steam heat de-icing, alcohol de-icing, and electrical heat de-icing are provided.
Date:
April 1947
Creator:
Lewis, James P.
Object Type:
Report
System:
The UNT Digital Library
A Flight Investigation of the Thermal Performance of Air Heated Propeller
Note presenting the thermal performance of an air-heated propeller, installed on a test airplane, as evaluated by observations of the ice-prevention properties of the propeller during flight in natural icing conditions and by the collection of thermal data on the propeller during flight in clear air and in clouds at temperatures above freezing. The results indicated that the air-heated-propeller installation tested would offer little or no protection to the leading-edge regions of the propeller during flight in severe natural-icing conditions.
Date:
April 1947
Creator:
Darsow, John F. & Selna, James
Object Type:
Report
System:
The UNT Digital Library
A review of instruments developed for the measurement of the meteorological factors conductive to aircraft icing
Report presenting a review of the status of instruments suitable for the measurement of the meteorological factors conducive to aircraft icing. Nine instruments which appear to be the most promising for obtaining meteorological data are discussed and recommendations for their continued use and development are provided.
Date:
April 26, 1949
Creator:
Jones, Alun R. & Lewis, William
Object Type:
Report
System:
The UNT Digital Library
A Simple Method of Estimating the Subsonic Lift and Damping in Roll of Sweptback Wings
"A method of modifying existing correction factors of lifting-surface theory to account approximately for the effects of sweep was derived, and these factors were applied to existing lifting-line theories for the lift and damping in roll of swept wings. Despite the simplicity of the resulting formulas the agreement with experimental data for low speeds is very good. The equation for lift is expressed entirely in terms of the geometric characteristics of the wing and the section-lift-curve; the necessity for any charts is thereby eliminated" (p. 1).
Date:
April 1949
Creator:
Polhamus, Edward C.
Object Type:
Report
System:
The UNT Digital Library
Tests of a gust-alleviating wing in the gust tunnel
"Tests were made in the NACA gust tunnel to determine the effectiveness of a torsionally flexible wing with the torsion axis ahead of the locus of the section aerodynamic centers in reducing airplane accelerations due to atmospheric gusts. For three gust shapes, a series of flights was made with the airplane model equipped with either a torsionally flexible or a rigid wing. The results indicated that the torsionally flexible wing reduced the maximum acceleration increment 5 percent for the sharp-edge gust and about 17 percent for gust shapes with gradient distances of 6.8 and 15 chord lengths" (p. 1).
Date:
April 1941
Creator:
Shufflebarger, C. C.
Object Type:
Report
System:
The UNT Digital Library
Systematic Wind-Tunnel Measurements on a Laminar Wing With Nose Flap
"Results of measurements are given as a supplement to earlier tests for a laminar profile with nose flap; magnitude, form, and angle of attack of the flap were systematically changed. The experiments were carried out at an effective Reynolds number of 8.2 x 10(exp 5). A comparison with measurements on other profiles shows that the effect of a nose flap is essentially dependent upon magnitude of the nose radius coefficient of the profile" (p. 1).
Date:
April 1947
Creator:
Krueger, W.
Object Type:
Report
System:
The UNT Digital Library
Preliminary Wind-Tunnel Investigation of the Effect of Area Suction on the Laminar Boundary Layer Over an NACA 64A010 Airfoil
Memorandum presenting a preliminary investigation made in the two-dimensional low-turbulence tunnel on an NACA 64A010 airfoil with permeable surfaces to obtain an indication of the stabilizing effect of area suction on the laminar boundary layer. Although the airfoil surface had many waves and irregularities of contour, the data corroborated qualitatively the theoretically predicted stabilizing effect of area suction on a smooth flat plate.
Date:
April 26, 1948
Creator:
Braslow, Albert L.; Visconti, Fioravante & Burrows, Dale L.
Object Type:
Report
System:
The UNT Digital Library
Flight Investigation of Boundary-Layer Transition and Profile Drag of an Experimental Low-Drag Wing Installed on a Figher-Type Airplane
Report presenting a boundary-layer-transition and profile-drag investigation conducted on an experimental low-drag wing installed on a P-47 airplane designated the XP-47F. Measurements were made at a section outside the propeller slipstream with smooth and with standard camouflage surfaces and on the upper surface of a section in the propeller slipstream with the surface smoothed. Results regarding the right wing section outside the slipstream and left wing section in the propeller slipstream are provided.
Date:
April 1945
Creator:
Zalovcik, John A. & Skoog, Richard B.
Object Type:
Report
System:
The UNT Digital Library
Some effects of rainfall on flight of airplanes and on instrument indications
"Several possible effects of heavy rain on the aerodynamic performance of an airplane and of heavy rain and associated atmospheric phenomena on the indications of flight instruments are briefly considered. It is concluded that the effects of heavy rain on the performance of an airplane are not so great as to force the airplane down from moderate altitudes. Serious malfunctioning of the air-speed indicator may occur, however, as a result of flooding of the pitot-static head and subsequent accumulation of water in the air-speed pressure line" (p. 1).
Date:
April 1941
Creator:
Rhode, Richard V.
Object Type:
Report
System:
The UNT Digital Library
Effect of Aging on Mechanical Properties of Aluminum-Alloy Rivets
"Curves and tabular data present the results of strength tests made during and after 2 1/2 years of aging on rivets and rivet wire of 3/16-inch nominal diameter. The specimens were of aluminum alloy: 24S, 17S, and A17S of the duralumin type and 53S of the magnesium-silicide type" (p. 1).
Date:
April 1941
Creator:
Roop, Frederick C.
Object Type:
Report
System:
The UNT Digital Library
AVA monographs. B: Boundary layer
Report discusses several experiments regarding boundary layers and their influence on aircraft. The first experiment investigates how to best design airfoils. The second involves using suction to remove the boundary layer. The third involves surface disturbances and how they may affect the boundary layer.
Date:
April 1948
Creator:
Holstein, H.; Betz, A. & Tollmien, W.
Object Type:
Report
System:
The UNT Digital Library
Quantitative Study of Variations in Concentration of Glycerol and Aerosol OT on Foaming Volume of Oil at Room Temperature
"The amount of foam that can be formed in the presence of certain pure chemical agents was investigated by a new method. The effect of variations in concentration and proportion of Aerosol OT and glycerol was studied and the effects of various other mixtures have been given for comparison. Both Gulf Agent and Aerosol-OT - glycerol mixtures, when present in comparable amounts, prohibited the formation of the normal volumes of foam to the same extent and in the optimum cases reduced it to only one-tenth of its normal value" (p. 1).
Date:
April 1949
Creator:
McBain, J. W. & Ross, Sydney
Object Type:
Report
System:
The UNT Digital Library
Effect of Various Compounds in Use With Airplane Engines Upon Foaming of Aircraft Lubricating Oil
Report presenting an investigation of aircraft lubricating oil that is contaminated with various materials used in connection with airplane engines or contained in the fuel. Over 60 of the materials have been tested to determine their influence on the foaming of an aircraft lubricating oil. All but 13 of the compounds were found to have a small or negligible effect, but the other 13 were found to be strong foaming agents.
Date:
April 1949
Creator:
McBain, J. W. & Woods, W. W.
Object Type:
Report
System:
The UNT Digital Library
Investigation of Effects of Surface Temperature and Single Roughness Elements on Boundary-Layer Transition
Note presenting an investigation of the laminar boundary layer and the position of the transition point on a heated flat plate. The Reynolds number of transition was found to decrease as the temperature of the plate is increased. Results regarding the effect of surface temperature, effect of roughness elements, mean-velocity profile near a heated wall, instability of inflection-point profiles, and laminar separation and transition are provided.
Date:
April 1947
Creator:
Liepmann, Hans W. & Fila, Gertrude H.
Object Type:
Report
System:
The UNT Digital Library
Comparison between predicted and observed performance of gas-turbine stator blade designed for free-vortex flow
Report presenting a comparison between the calculated design performance of a gas-turbine stator blade and its performance in a sector of an annular cascade tunnel. The gas velocities on the blade surface were computed by the stress filament method and compared with experimental values, with which they agreed satisfactorily. Results regarding discharge angle, vane-surface-velocity distribution, tangential- and axial-velocity distribution, and radial-equilibrium consideration are provided.
Date:
April 1949
Creator:
Huppert, M. C. & MacGregor, Charles
Object Type:
Report
System:
The UNT Digital Library