Collection
Technical Report Archive and Image Library
741
National Advisory Committee for Aeronautics Collection
509
Office of Scientific & Technical Information Technical Reports
227
Texas Attorney General Opinions
224
USGS Topographic Map Collection
127
TRAIL Microcard Collection
116
Government Documents A to Z Digitization Project
31
Texas State Publications
22
USDA Farmers' Bulletins
16
Environmental Policy Collection
5
10 More
Serial/Series Title
NACA Research Memorandums
269
NACA Technical Notes
133
Atomic Energy Commission Reports
113
15 Minute Series (Topographic)
82
NACA Technical Reports
54
NACA Technical Memorandums
50
United States Bureau of Mines Reports
48
Hanford Works Reports
33
Report of investigations (United States. Bureau of Mines)
30
HW (Series)
29
71 More
States
1,385 Matching Results
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Aerodynamic characteristics of the NACA 8-H-12 airfoil section at six Reynolds numbers from 1.8 x 10(exp 6) to 11.0 x 10(exp 6)
Report presenting an investigation in the two-dimensional low-turbulence pressure tunnel to determine the aerodynamic characteristics of the NACA 8-H-12 airfoil section at four Reynolds numbers. The section lift, drag, and pitching-moment characteristics are presented for smooth and rough surface conditions. Generally, no unusual scale effects are present for either condition.
Date:
December 1949
Creator:
Schaefer, Raymond F. & Smith, Hamilton A.
Object Type:
Report
System:
The UNT Digital Library
Analysis of means of improving the uncontrolled lateral motions of personal airplanes
From Summary: "The purpose of this investigation was to determine whether such airplanes could be made to fly uncontrolled for an indefinite period of time without getting into dangerous attitudes and for a reasonable period of time (one to three minutes) without deviating excessively from their original course. The results of this analysis indicated that the uncontrolled motions of a personal airplane could be made safe as regards spiral tendencies and could be greatly improved as regards maintenance of course without resort to an autopilot."
Date:
December 1949
Creator:
McKinney, Marion O., Jr.
Object Type:
Report
System:
The UNT Digital Library
Effect of airfoil section and tip tanks on the aerodynamic characteristics at high subsonic speeds of an unswept wing of aspect ratio 5.16 and taper ratio 0.61
Report presenting an investigation of the effect of two wing sections and a tip tank on the aerodynamic characteristics of a rigid unswept wing in the high-speed tunnel over a Mach number range of 0.60 to 0.90. Results regarding the effect of original airfoil sections, effect of modifications to Section B, effect of tip tank, and characteristics of the tip tank in the presence of the wing are provided.
Date:
December 1, 1949
Creator:
Silvers, H. Norman & Spreeman, Kenneth P.
Object Type:
Report
System:
The UNT Digital Library
EVALUATION OF FILTERING EFFICIENCY AND OPERATING LIFE OF FG MATERIAL USED IN PILE COOLING AIR FILTER HOUSE
None
Date:
December 1, 1949
Creator:
Savage, H.C.
Object Type:
Report
System:
The UNT Digital Library
Experimental Investigation of Flutter of a Propeller With Clark Y Section Operating at Zero Forward Velocity at Positive and Negative Blade-Angle Settings
Report presenting an investigation of the flutter of a small one-blade wooden propeller with a Clark Y section. The highest flutter speeds were found in the vicinity of the angle of zero aerodynamic moment, with flutter speed increasing in this region with decreasing pressure.
Date:
December 1949
Creator:
Baker, John E. & Paulnock, Russell S.
Object Type:
Report
System:
The UNT Digital Library
THE HEAT TRANSFER AND FLOW FRICTION PERFORMANCE OF THREE COMPACT PLATE-FIN HEAT EXCHANGER SURFACES. Technical Report No. 7
None
Date:
December 1, 1949
Creator:
Kays, W. M.
Object Type:
Report
System:
The UNT Digital Library
Investigation of Christy Titanium Deposit, Hot Spring County, Arkansas
Report issued by the Bureau of Mines over titanium deposits on the Christy property in Arkansas. Details of the location, and drilling methods are presented. This report includes tables, maps, illustrations, and photographs.
Date:
December 1949
Creator:
Reed, Donald F.
Object Type:
Report
System:
The UNT Digital Library
Investigation of Magnet Cove Rutile Deposit, Hot Spring County, Arkansas
Report issued by the Bureau of Mines on the exploration of the Magnet Cove Rutile deposits. Descriptions of the deposit, and characteristics of the pyrite, titanium, and mineral ore are presented. This report includes tables, maps, and illustrations.
Date:
December 1949
Creator:
Reed, Donald F.
Object Type:
Report
System:
The UNT Digital Library
Investigation of the Huber-Rydalch Manganese Deposits, Tooele County, Utah
Report issued by the Bureau of Mines on the manganese deposits in Tooele County, Utah. The physical features, geology, and descriptions of the deposit samples are listed. This report includes tables, and illustrations.
Date:
December 1949
Creator:
Fry, Eugene & Wilson, Stephen R.
Object Type:
Report
System:
The UNT Digital Library
Investigation of the Yellow Pine Zinc-Lead Mine, Clark County, Nevada
Report issued by the Bureau of Mines regarding studies conducted on zinc-lead mines in Clark County, Nevada. Physical qualities of the mine, equipment used, and methods of sampling are presented. This report includes tables, and maps.
Date:
December 1949
Creator:
Geehan, Robert W. & Benson, Willmar T.
Object Type:
Report
System:
The UNT Digital Library
Landing Procedure in Model Ditching Tests of Bf 109
The purpose of the model tests is to clarify the motions in the alighting on water of a land plane. After discussion of the model laws, the test method and test procedure are described. The deceleration-time-diagrams of the landing of a model of the Bf 109 show a high deceleration peek of greater than 20g which can be lowered to 4 to 6g by radiator cowling and brake skid.
Date:
December 1949
Creator:
Sottorf, W.
Object Type:
Report
System:
The UNT Digital Library
National Motor-Gasoline Survey: Summer 1949
Report issued by the Bureau of Mines over motor-fuels sold during the summer of 1949. The properties of the fuels sampled are presented. This report includes tables, and graphs.
Date:
December 1949
Creator:
Blade, O. C.
Object Type:
Report
System:
The UNT Digital Library
On Internal Damping of Rotating Beams
Note presenting an investigation to derive the implications of a previously derived equation for rotating beams.
Date:
December 1949
Creator:
Morduchow, Morris
Object Type:
Report
System:
The UNT Digital Library
The pegmatites of the Errington-Thiel mine, Elko County, Nevada
A report regarding pegmatites of the Errington-Theil mine, Elko County, Nevada.
Date:
December 1949
Creator:
Hinrichs, E. Neal
Object Type:
Report
System:
The UNT Digital Library
Plastic buckling of a long flat plate under combined shear and longitudinal compression
Report presenting the condition for plastic buckling of a long flat plate under combined shear and longitudinal compression is obtained by using the theory of plastic buckling developed for simple loading, provided the ratio of shear to longitudinal compression is assumed constant during the loading process. A detailed calculation for a number of simply supported plates made of a typical aluminum alloy shows that an approximate algebraic relationship provided in the paper will suffice for determination of buckling stress.
Date:
December 1949
Creator:
Stowell, Elbridge Z.
Object Type:
Report
System:
The UNT Digital Library
Preliminary Results of Prospecting of the "Leached" Zone Over Phosphate Deposits in NW 1/4 of Sec. 9, T. 31 S., R. 25 E., Polk County, Florida
Report discussing a geological examination of an area in Polk County, Florida with leached zones containing uranium. The objective of the study was to determine the advisability of making plans for stockpiling the leached zone material in this area.
Date:
December 1949
Creator:
Stewart, Robert H.
Object Type:
Report
System:
The UNT Digital Library
Pressure-Distribution Measurements on the Tail Surfaces of a Rotating Model of the Design BFW - M31
In order to obtain insight into the flow conditions on tail surfaces on airplanes during spins, pressure-distribution measurements were performed on a rotating model of the design BFW-M31. For the time being, the tests were made for only one angle of attack (alpha = 60 degrees) and various angles of yaw and rudder angles. The results of these measurements are given; the construction of the model, and the test arrangement used are described. Measurements to be performed later and alterations planned in the test arrangement are pointed out.
Date:
December 1949
Creator:
Kohler, M. & Mautz, W.
Object Type:
Report
System:
The UNT Digital Library
Shorter Contributions to Alaskan Trace Elements Studies, Part 1: Trace Elements Reconnaissance in the Candle Creek Area, Fairhaven District, Seward Peninsula, Alaska
Report discussing the U.S. Geological Survey's investigation of radioactive element samples found in the Candle Creek area on the Seward Peninsula of Alaska.
Date:
December 1949
Creator:
Gault, H. R.
Object Type:
Report
System:
The UNT Digital Library
Stability of Alclad Plates
Report presenting a theoretical solution for the buckling of Alclad plates on the basis of plasticity theory. Both the differential equation of equilibrium of the buckled plate and energy expression are provided. Results regarding the buckling of long simply supported plates under longitudinal compression and under shear and for a plate column are provided.
Date:
December 1949
Creator:
Buchert, Kenneth P.
Object Type:
Report
System:
The UNT Digital Library
Streambank Plantings for Erosion Control in the Northeast.
Describes the process of planting along streambanks as a method of erosion prevention.
Date:
December 1949
Creator:
Edminster, Frank C. (Frank Custer), 1903-
Object Type:
Book
System:
The UNT Digital Library
Systematic model researches on the stability limits of the DVL series of float designs
"To determine the trim range in which a seaplane can take off without porpoising, stability tests were made of a Plexiglas model, composed of float, wing, and tailplane, which corresponded to a full-size research airplane. The model and full-size stability limits are in good agreement. After all structural parts pertaining to the air frame were removed gradually, the aerodynamic forces replaced by weight forces, and the moment of inertia and position of the center of gravity changed, no marked change of limits of the stable zone was noticeable" (p. 1).
Date:
December 1949
Creator:
Sottorf, W.
Object Type:
Report
System:
The UNT Digital Library
Texas Game and Fish, Volume 8, Number 1, December 1949
Monthly magazine discussing natural resources, parks, hunting and fishing, and other information related to the outdoors in Texas.
Date:
December 1949
Creator:
Texas. Game and Fish Commission.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Truly yours: the dress that fits.
This document is a brochure describing a film about garment selection and alteration, with instructions on how to buy or borrow the film (at the time that it was issued).
Date:
December 1949
Creator:
United States. Department of Agriculture.
Object Type:
Book
System:
The UNT Digital Library
Uranium Possibilities in Arizona Exclusive of the Colorado Plateau
From introduction: This report represents an effort to assemble, relate, and evaluate available information about possible primary uranium mineralization in the state of Arizona. This is the initial step in preparation for a system ratio field study of the state.
Date:
December 1949
Creator:
Wright, Robert J.
Object Type:
Report
System:
The UNT Digital Library