Resource Type
Collection
Technical Report Archive and Image Library
153
National Advisory Committee for Aeronautics Collection
122
USDA Farmers' Bulletins
32
Government Documents A to Z Digitization Project
30
USGS Topographic Map Collection
12
Texas State Publications
8
Texas House of Representatives Journals
3
Texas Senate Journals
3
United States Experiment Station Record
3
Environmental Policy Collection
2
7 More
Serial/Series Title
NACA Technical Notes
44
NACA Technical Reports
32
Farmers' bulletin (United States. Dept. of Agriculture)
29
NACA Technical Memorandums
29
United States Bureau of Mines Reports
16
United States Geological Survey Reports
12
NACA Special Reports
9
Leaflet (United States. Department of Agriculture)
7
45th Legislature of Texas
6
U.S. Geological Survey bulletin
6
34 More
Country
States
229 Matching Results
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Abilene Sheet
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 1:125000
Date:
1937
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Accelerations in Landing with a Tricycle-Type Landing Gear
"In connection with the application of stable tricycle-type landing gears to transport airplanes, the question arises as to whether certain passengers may not experience relatively great accelerations in an emergency landing. Since the main landing wheels are behind the center of gravity in this type of gear, a hard-braked landing will cause immediate nosing down of the airplane and, when this motion is stopped due to the front wheel striking the ground, there will be some tendency for the rearmost passengers to be thrown out of their seats, The provided rough calculations are designed to show the magnitudes of the various reactions experienced in a severe landing under these circumstances" (p. 1).
Date:
February 1937
Creator:
Jones, Robert T.
Object Type:
Report
System:
The UNT Digital Library
Addington Sheet
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 1:125000
Date:
1937
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Aerodynamic Characteristics of NACA 23012 and 23021 Airfoils With 20-Percent-Chord External-Airfoil Flaps of NACA 23012 Section
Report presents the results of an investigation of the general aerodynamic characteristics of the NACA 23012 and 23021 airfoils, each equipped with a 0.20c external flap of NACA 23012 section. The tests were made in the NACA 7 by 10-foot and variable-density wind tunnels and covered a range of Reynolds numbers that included values corresponding to those for landing conditions of a wide range of airplanes. Besides a determination of the variation of lift and drag characteristics with position of the flap relative to the main airfoil, complete aerodynamic characteristics of the airfoil-flap combination with a flap hinge axis selected to give small hinge moments were measured in the two tunnels.
Date:
1937~
Creator:
Platt, Robert C. & Abbott, Ira H.
Object Type:
Report
System:
The UNT Digital Library
Agua Fria 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 1:62500
Date:
1937
Creator:
United States. Army. Corps of Engineers.
Object Type:
Map
System:
The Portal to Texas History
Air propellers in yaw
Report presents the results of tests conducted at Stanford University of a 3-foot model propeller at four pitch settings and at 0 degree, 10 degrees, 20 degrees, and 30 degrees yaw.
Date:
1937
Creator:
Lesley, E. P.; Worley, George F. & Moy, Stanley
Object Type:
Report
System:
The UNT Digital Library
The Airspeed "Oxford" Training Airplane (British): A Two-Engine Cantilever Monoplane
Circular describing the Airspeed A.S. 10 "Oxford", which is a twin-engine trainer with a variety of equipment, including propellers, landing gear, and other components.Details of the wings, fuselage, the inside, characteristics, performance, drawings, and photographs are provided.
Date:
September 1937
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Aldine 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:
1937
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Alternating-current equipment for the measurement of fluctuations of air speed in turbulent flow
From Summary: "Recent electrical and mechanical improvements have been made in the equipment developed at the National Bureau of Standards for measurement of fluctuations of air speed in turbulent flow. Data useful in the design of similar equipment are presented. The design of rectified alternating-current power supplies for such apparatus is treated briefly, and the effect of the power supplies on the performance of the equipment is discussed."
Date:
March 1937
Creator:
Mock, W. C., Jr.
Object Type:
Report
System:
The UNT Digital Library
An analysis of the factors that determine the periodic twist of an autogiro rotor blade, with a comparison of predicted and measured results
Report presents an analysis of the factors that determine the periodic twist of a rotor blade under the action of the air forces on it. The results of the analysis show that the Fourier coefficients of the twist are linear expressions involving only the tip-speed ratio, the pitch setting, the inflow coefficient, the pitching-moment coefficient of the blade airfoil section, and the physical characteristics of the rotor blade and machine.
Date:
April 14, 1937
Creator:
Wheatley, John B.
Object Type:
Report
System:
The UNT Digital Library
An Analytical and Experimental Study of the Effect of Periodic Blade Twist on the Thrust, Torque, and Flapping Motion of an Autogiro Rotor
From Summary: "An analysis is made of the influence on autogiro rotor characteristics of a periodic blade twist that varies with the azimuth position of the rotor blade and the results are compared with experimental data. The analysis expresses the influence of this type of twist upon the thrust, torque, and flapping motion of the rotor. The check against experimental data shows that the periodic twist has a pronounced influence on the flapping motion and that this influence is accurately predicted by the analysis. The influence of the twist upon the thrust and torque could be demonstrated only indirectly, but its importance is indicated."
Date:
January 28, 1937
Creator:
Wheatley, John B.
Object Type:
Report
System:
The UNT Digital Library
Annual Report of the Boy Scouts of America: 1936
Annual report submitted by the Boy Scouts of America to Congress describing highlights from 1936, activities, service reports, honors, finance, organizational leadership, and other information about scouting programs.
Date:
April 6, 1937
Creator:
Boy Scouts of America
Object Type:
Report
System:
The Portal to Texas History
Annual Report of the Explosives Division, Fiscal Year 1936
Report issued by the U.S. Bureau of Mines on the U.S. Explosives Division, and the chemical and physical testing conducted. The properties of the studies conducted during 1936 are presented. This report includes tables, illustrations, and photographs.
Date:
February 1937
Creator:
Huff, Wilbert James
Object Type:
Report
System:
The UNT Digital Library
Annual Report of the National Advisory Committee for Aeronautics (22nd). Administrative Report Including Technical Report Nos. 542 to 576
Report includes the National Advisory Committee for Aeronautics letter of submittal to the President, Congressional report, summaries of the committee's activities and research accomplished, bibliographies, and financial report.
Date:
1937
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The apparent width of the plate in compression
This report discusses an investigation that treats the load capacity of a rectangular plate stressed in compression on one direction (x) beyond the buckling limit and the plate is rotatable (i.e., free from moments) supported at all four sides by bending-resistant beams.
Date:
July 1937
Creator:
Marguerre, Karl
Object Type:
Report
System:
The UNT Digital Library
Armstrong Whitworth 27 "Ensign" Commercial Airplane (British): An All-Metal High-Wing Monoplane
Circular presenting a description of the Armstrong Whitworth monoplane, which is an all-metal, high-wing monoplane with landing gear that retracts into the wing-mounted engine nacelles. Details of the wings, wing spars, fuselage, controls, engines, speeds, drawings, and photographs are provided.
Date:
May 1937
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Asbestos
From Introduction: "This report covers the essential features of the asbestos industry, including occurrence, production, mining, milling, utilization, international trade, and marketing."
Date:
1937
Creator:
Bowles, Oliver
Object Type:
Report
System:
The UNT Digital Library
Auto-Ignition and Combustion of Diesel Fuel in a Constant-Volume Bomb
Report presents the results of a study of variations in ignition lag and combustion associated with changes in air temperature and density for a diesel fuel in a constant-volume bomb. The test results have been discussed in terms of engine performance wherever comparisons could be drawn. The most important conclusions drawn from this investigation are: the ignition lag was essentially independent of the injected fuel quantity. Extrapolation of the curves for the fuel used shows that the lag could not be greatly decreased by exceeding the compression-ignition engines. In order to obtain the best combustion and thermal efficiency, it was desirable to use the longest ignition lag consistent with a permissible rate of pressure rise.
Date:
October 5, 1937
Creator:
Selden, Robert F.
Object Type:
Report
System:
The UNT Digital Library
Ball-Mill Grinding
Report issued by the Bureau of Mines discussing the ball-mill grinding technique. Different methods of mill grinding are presented and compared with ball-mill grinding. This report includes tables, illustrations, and photographs.
Date:
1937
Creator:
Coghill, Will H. & DeVaney, Fred D.
Object Type:
Report
System:
The UNT Digital Library
Baynes Bee Light Airplane (British): A Two-Seat High-Wing Monoplane
Circular presenting a description of the Baynes Bee, which is a light two-seat high-wing monoplane. Details of its unique qualities, design, components, flying qualities, drawings, and photographs are provided.
Date:
June 1937
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Behavior of Thin-Will Monocoque Cylinders Under Torsional Vibration
"Curves of forced frequency against amplitude are presented for the conditions where the forced frequency is both increased and decreased into the resonant range. On the basis of these curves it is shown that the practical resonance frequency is the point where wrinkling first occurs and that the resonance frequency will be subject to considerable travel once permanent wrinkles appear in the vibrating shell. The decreasing mode of striking resonance is found to be by far the most destructive condition" (p. 1).
Date:
August 1937
Creator:
Pekelsma, Robert E.
Object Type:
Report
System:
The UNT Digital Library
Bending Tests of Circular Cylinders of Corrugated Aluminum-Alloy Sheet
"Bending tests were made of two circular cylinders of corrugated aluminum-alloy sheet. In each test failure occurred by bending of the corrugations in a plane normal to the skin. It was found, after analysis of the effect of short end bays, that the computed stress on the extreme fiber of a corrugated cylinder is in excess of that for a flat panel of the same basic pattern and panel length tested as a pin-ended column. It is concluded that this increased strength was due to the effects of curvature of the pitch line. It is also concluded from the tests that light bulkheads closely spaced strengthen corrugated cylinders very materially" (p. 1).
Date:
March 1937
Creator:
Niles, Alfred S.; Buckwalter, John C. & Reed, Warren D.
Object Type:
Report
System:
The UNT Digital Library
The border method of irrigation.
Describes how to irrigate using the border method, and how to prepare the ditches for irrigation.
Date:
October 1937
Creator:
Fortier, Samuel. & Lewis, M. R. (Mortimer Reed), 1886-
Object Type:
Book
System:
The UNT Digital Library
Brenham 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 1:62500
Date:
1937
Creator:
United States. Army. Corps of Engineers.
Object Type:
Map
System:
The Portal to Texas History