Resource Type
Collection
Technical Report Archive and Image Library
181
National Advisory Committee for Aeronautics Collection
140
USGS Topographic Map Collection
61
USDA Farmers' Bulletins
14
Government Documents A to Z Digitization Project
6
Texas State Publications
3
Texas Senate Journals
2
United States Experiment Station Record
2
Boy and Girl Scout Annual Reports
1
Environmental Policy Collection
1
2 More
Serial/Series Title
NACA Technical Memorandums
43
NACA Technical Reports
38
NACA Technical Notes
37
15 Minute Series (Topographic)
25
United States Bureau of Mines Reports
25
NACA Aircraft Circulars
20
Farmers' bulletin (United States. Dept. of Agriculture)
13
United States Geological Survey Reports
7
30 Minute Series
6
7.5 Minute Series (Topographic)
3
33 More
States
267 Matching Results
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Adjusting Corn Belt Farming to Meet Corn-Borer Conditions
"The European corn borer is recognized as a dangerous enemy of the corn crop.... Its eradication is considered economically impossible but it is believed that the injury may be kept at a point so low that little commercial damage will occur during normal seasons. This can be done by using control measures and practices that have proved to be effective.... On some farms some changes in the crops grown and in their sequence will aid materially in controlling the borer and may prove profitable even when borers are not present. The control program for the individual farm should be given consideration at once in order to avoid sudden disturbance of the organization and operation of the farm when control measures do become inevitable. The necessity of concerted effort by all producers in an infested district becomes evident when the life habits of the borer are considered." -- p. ii
Date:
1932
Creator:
Myres, Kenneth Hayes, 1898-
Object Type:
Pamphlet
System:
The UNT Digital Library
The aerodynamic characteristics of a slotted Clark y wing as affected by the auxiliary airfoil position
From Summary: "Aerodynamic force tests on a slotted Clark Y wing were conducted in a vertical wind tunnel to determine the best position for a given auxiliary airfoil with respect to the main wing. A systematic series of 100 changes in location of the auxiliary airfoil were made to cover all the probable useful ranges of slot gap, slot width, and slot depth. The results of the investigation may be applied to the design of automatic or controlled slots on wings with geometric characteristics similar to the wing tested. The best positions of the auxiliary airfoil were covered by the range of the tests, and the position for desired aerodynamic characteristics may easily be obtained from charts prepared especially for the purpose."
Date:
1932~
Creator:
Wenzinger, Carl J. & Shortal, Joseph A.
Object Type:
Report
System:
The UNT Digital Library
Aerodynamic characteristics of circular-arc airfoils at high speeds
From Summary: "The aerodynamic characteristics of eight circular-arc airfoils at speeds of 0.5, 0.8, 0.95, and 1.08 times the speed of sound have been determined in an open-jet air stream 2 inches in diameter, using models of 1-inch chord. The lower surface of each airfoil was plane; the upper surface was cylindrical. As compared with the measurements described in NACA-TR-319, the circular-arc airfoils at speeds of 0.95 and 1.08 times the speed of sound are more efficient than airfoils of the R. A. F. or Clark Y families. At a speed of 0.5 times the speed of sound, the thick circular-arc sections are extremely inefficient, but thin sections compare favorably with those of the R. A. F. family. A moderate round of the sharp edges changes the characteristics very little and is in many instances beneficial. The results indicate that the section of the blades of propellers intended for use at high tip-speeds should be of the circular-arc form for the outer part of the blade and should be changed gradually to the R. A. F. or Clark Y form as the hub is approached."
Date:
1932~
Creator:
Briggs, L. J. & Dryden, H. L.
Object Type:
Report
System:
The UNT Digital Library
The aerodynamic characteristics of eight very thick airfoils from tests in the variable density wind tunnel
Report presents the results of wind tunnel tests on a group of eight very thick airfoils having sections of the same thickness as those used near the roots of tapered airfoils. The tests were made to study certain discontinuities in the characteristic curves that have been obtained from previous tests of these airfoils, and to compare the characteristics of the different sections at values of the Reynolds number comparable with those attained in flight. The discontinuities were found to disappear as the Reynolds number was increased. The results obtained from the large-scale airfoil, a symmetrical airfoil having a thickness ratio of 21 per cent, has the best general characteristics.
Date:
1932~
Creator:
Jacobs, Eastman N.
Object Type:
Report
System:
The UNT Digital Library
Algoa 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:
1932
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Algoa 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:
1932
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Annual Report of the National Advisory Committee for Aeronautics (17th). Administrative Report Including Technical Report Nos. 365 to 400
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:
1932
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Armstrong Whitworth A.W. 16 Military Airplane (British): A Single-Seat Biplane
Circular presenting a description of the A.W. XVI, which is a single-bay staggered biplane of metal construction with a clean external design. A description of the tail unit, control system, cockpit, fuselage, characteristics, performance, drawings, and photographs are provided.
Date:
January 1932
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Ashland Coal Field, Rosebud, Powder River, and Custer Counties, Montana
From introduction: The detailed information concerning the coal deposits of the Ashland field set forth in this report has been obtained in the course of an investigation that has been conducted both as a part of the United States Geological Survey's general systematic study of western coal lands and as an aid in the administration of the public lands. With the information obtained on the location of outcrops, the number, distribution, and thickness of coal beds, the accessibility of the coal, and the thickness of the overburden, the public lands of the region are classified as to their coal value; coal-bearing lands are differentiated from noncoal-bearing lands; and the administration of the coal-land leasing law is facilitated.
Date:
1932
Creator:
Bass, N. Wood
Object Type:
Report
System:
The UNT Digital Library
The Automotive Ignition Coil
This report gives the results of a series of measurements on the secondary voltage induced in an ignition coil of typical construction under a variety of operating conditions. These results show that the theoretical predictions hitherto made as to the behavior of this type of apparatus are in satisfactory agreement with the observed facts. The large mass of data obtained is here published both for the use of other investigators who may wish to compare them with other theoretical predictions and for the use of automotive engineers who will here find definite experimental results showing the effect of secondary capacity and resistance on the crest voltage produced by ignition apparatus.
Date:
1932%
Creator:
Darnell, T. H.
Object Type:
Report
System:
The UNT Digital Library
Baird 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:
1932
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Bean Diseases and Their Control
"Beans are subject to a number of diseases that cause injury and loss. The purpose of this bulletin is to describe these diseases briefly, so that they can be identified by the grower, and to give recommendations for preventing and checking them." -- p. ii. Diseases for garden, field, and Lima beans are discussed and include anthracnose, blight, mosaic (curly leaf), rust, root rots, mildew, and baldhead.
Date:
1932
Creator:
Harter, L. L. (Leonard Lee) & Zaumeyer, W. J. (William John)
Object Type:
Pamphlet
System:
The UNT Digital Library
Beaumont 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:
1932
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Beaumont 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:
1932
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Beaver Creek 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:
1932
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Bertram 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:
1932
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Bolivar Point 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 1:24000
Date:
1932
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Bone Spring 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:
1932
Creator:
United States. Army. Corps of Engineers.
Object Type:
Map
System:
The Portal to Texas History
Brackettville 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:
1932
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Camp Springs 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:
1932
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Camp Springs 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:
1932
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Cattle-Fever Ticks and Methods of Eradication
Revised edition. This bulletin discusses the cattle-fever tick and methods for controlling it. Possible methods include dipping, pasture rotation, and arsenical dips. The life history of the tick is also discussed.
Date:
1932
Creator:
Ellenberger, W. P. & Chapin, Robert M.
Object Type:
Pamphlet
System:
The UNT Digital Library
Cattle Scab and Methods of Control and Eradication
Revised edition. "Cattle scab can be eradicated by dipping or spraying, but dipping is the better method of treatment. Lime-sulphur dips, nicotine dips, and crude-petroleum dips are efficacious. Methods of preparing and using these dips are described and the intervals between dippings and the conditions under which the various dips may safely be used for the different kinds of scab are discussed. Also, plans of cattle-dipping plants and directions for building vats and dipping cattle are given." -- p. 2
Date:
1932
Creator:
Imes, Marion
Object Type:
Pamphlet
System:
The UNT Digital Library
The Characteristics of a Clark Y Wing Model Equipped With Several Forms of Low-Drag Fixed Slots
This investigation was undertaken to develop a low-drag fixed slot for an airplane wing which would avoid the complications and maintenance difficulties of the present movable-type Handley Page slot. Tests were conducted on a series of fixed slots in an attempt to reduce the minimum drag coefficient without decreasing the maximum lift coefficient or the stalling angle of the slotted wing. The tests were made in the NACA 5-foot vertical wind tunnel on a Clark Y basic section having a 10-inch chord.
Date:
1932
Creator:
Weick, Fred E. & Wenzinger, Carl J.
Object Type:
Report
System:
The UNT Digital Library