Collection
Technical Report Archive and Image Library
1,563
National Advisory Committee for Aeronautics Collection
1,298
Texas Patents
1,240
USDA Farmers' Bulletins
337
USGS Topographic Map Collection
292
Government Documents A to Z Digitization Project
163
Texas State Publications
43
Texas Soil Surveys
40
The Federal Reporter
23
United States Experiment Station Record
22
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Serial/Series Title
NACA Technical Memorandums
548
NACA Technical Notes
331
NACA Technical Reports
300
Farmers' bulletin (United States. Dept. of Agriculture)
256
United States Bureau of Mines Reports
208
NACA Aircraft Circulars
106
Farmers' bulletin (United States. Department of Agriculture)
80
15 Minute Series (Topographic)
67
30 Minute Series
66
Bulletin (United States. Bureau of Mines)
38
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3,620 Matching Results
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3,601 - 3,620 of
3,620
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 1:31680
Date:
1920
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Stability of the Parachute and Helicopter
This report deals with an extension of the theory of stability in oscillation to the case of aircraft following a vertical trajectory, and particularly to the oscillations of parachutes.
Date:
1920
Creator:
Bateman, H.
Object Type:
Report
System:
The UNT Digital Library
The Stable Fly: How to Prevent Its Annoyance and Its Losses to Live Stock
Report discussing the stable fly and methods for controlling it. Topics discussed include its distribution, life cycle, and breeding habits as well as natural and artificial methods of control.
Date:
1920
Creator:
Bishopp, F. C. (Fred Corry), 1884-1970c
Object Type:
Pamphlet
System:
The UNT Digital Library
Stephenville 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:
1920
Creator:
United States. Army. Corps of Engineers.
Object Type:
Map
System:
The Portal to Texas History
The Strength of One-Piece Solid, Build-Up and Laminated Wood Airplane Wing Beams
The purpose of this report is to summarize the results of all wood airplane wing beams tested to date in the Bureau of Standards Laboratory in order that the various kinds of wood and methods of construction may be compared. All beams tested were of an I section and the majority were somewhat similar in size and cross section to the front wing beam of the Curtiss JN-4 machine. Construction methods may be classed as (1) solid beams cut from solid stock; (2) three-piece beams, built up of three pieces, web and flanges glued together by a tongue-and-groove joint and (3) laminated beams built up of thin laminations of wood glued together.
Date:
1920
Creator:
Nelson, John H.
Object Type:
Report
System:
The UNT Digital Library
Structure in Paleozoic Bituminous Coals
From Introduction: "To fill in a few of these gaps and to clarify some of the existing confusion is the aim of this paper. The immediate cause that led the author to investigate further the composition of coal and the origin and structure of its constituents was that when an attempt was made to discover the meaning of the coking and noncoking properties of a coal a more exact knowledge of the nature of the coal was required than was then available."
Date:
1920
Creator:
Thiessen, Reinhardt
Object Type:
Report
System:
The UNT Digital Library
The Structure of Airplane Fabrics
This report prepared by the Bureau of Standards for the National Advisory Committee for Aeronautics supplies the necessary information regarding the apparatus and methods of testing and inspecting airplane fabrics.
Date:
1920
Creator:
Walen, E. Dean
Object Type:
Report
System:
The UNT Digital Library
A Study of Airplane Engine Tests
This report is a study of the results obtained from a large number of test of an Hispano-Suiza airplane engine in the altitude laboratory of the Bureau of Standards. It was originally undertaken to determine the heat distribution in such an engine, but many other factors are also considered as bearing on this matter.
Date:
1920
Creator:
Gage, Victor R.
Object Type:
Report
System:
The UNT Digital Library
A Study of Airplane Ranges and Useful Loads
This report is an analysis of the maximum flight radii of typical large airplanes and a discussion of the way in which the possible length of flight is affected by the change of weight by consumption of fuel during the flight.
Date:
1920
Creator:
Coffin, J. G.
Object Type:
Report
System:
The UNT Digital Library
The Subsidiary Gap as a Means for Improving Ignition
This report presents the results of an investigation into the utility, action, and design of the auxiliary spark gap as a means for insuring freedom from spark plug failure due to fouling, and also to enable the restarting of fouled plugs. A brief account is given of the use of this gap up to the present time and also of the statements concerning it which have gained some currency, most of which are shown to be erroneous. The simple theory of the action of the series gap is discussed and a detailed account given of the effect upon the sparking ability of the plug produced by changes in the values of the electrical resistance of the fouling and of the capacities in parallel with the plug and with the magneto or coil.
Date:
1920
Creator:
Gorton, W. S.
Object Type:
Report
System:
The UNT Digital Library
The Sunset-Midway Oil Field, California: Part 1. Geology and Oil Resources
This is a report on the Sunset-Midway oil field in Kern County, California, including the geology and production of oil.
Date:
1920
Creator:
Pack, Robert W.
Object Type:
Report
System:
The UNT Digital Library
Supplies and Production of Aircraft Woods
The purpose of this report is to present in brief form such information as is available regarding the supplies of the kinds of wood that have been used or seem likely to become important in the construction of airplanes, and the amount of lumber of each species normally put on the market each year. A general statement is given of the uses to which each kind of wood is or may be put.
Date:
1920
Creator:
Sparhawk, W. N.
Object Type:
Report
System:
The UNT Digital Library
Synopsis of Aeronautic Radiator Investigations for Years 1917 and 1918
Extensive series of experiments have been conducted at the Bureau of Standards to determine the properties of cooling radiator cores manufactured for airplanes and to develop improvements in design. The analysis of the problem on which this work was based, and consequently the experimental method employed, is different from that commonly used. Instead of attempting to test complete radiators, either full size or in model, uniform sections representing different types of core construction have been tested and an analysis of the results made with a view to determining independently the various factors which influence its performance. This report describes referenced method of analysis in predicting the performance of radiators designed for aeronautic use.
Date:
1920
Creator:
Dickinson, H. C. & Kleinschmidt, R. V.
Object Type:
Report
System:
The UNT Digital Library
Testing Balloon Gas
Report describes a simple, portable apparatus for testing hydrogen, with special reference to its use in balloons. "In the generation, storage, and use of hydrogen for balloon purposes it is necessary to be able to determine, first, its lifting power, and, secondly, its purity. The lifting power may be determined directly from the specific gravity. Contamination by other gases may be determined by analysis for oxygen, carbon dioxide, etc., by the usual methods of gas analysis" (p. 469).
Date:
1920
Creator:
Edwards, Junius David
Object Type:
Report
System:
The UNT Digital Library
The Testing of Balloon Fabrics
Report describes methods and materials used in waterproofing and fireproofing airplane fabrics using dopes. The determination of the probable life of a balloon fabric in service by experimental means is of great value in choosing the most suitable fabrics for a given purpose and in pointing the way to improvements in compounding and construction. The usefulness of exposure to the weather for this purpose has been amply demonstrated.
Date:
1920
Creator:
Edwards, Junius David & Moore, Irwin L.
Object Type:
Report
System:
The UNT Digital Library
Van Horn 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:
1920
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Waco 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:
1920
Creator:
United States. Army. Corps of Engineers.
Object Type:
Map
System:
The Portal to Texas History
Waller 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:
1920
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Wind Tunnel Balances
Report embodies a description of the balance designed and constructed for the use of the National Advisory Committee for Aeronautics at Langley Field, and also deals with the theory of sensitivity of balances and with the errors to which wind tunnel balances of various types are subject.
Date:
1920
Creator:
Warner, Edward P. & Norton, F. H.
Object Type:
Report
System:
The UNT Digital Library
Work and Expenditures of the Agricultural Experiment Stations, 1918
Volume provides a summary of the progress of each agricultural experiment station. Also includes statistics, discussions of foreign investigations, and selected studies.
Date:
1920
Creator:
United States. Office of Experiment Stations.
Object Type:
Book
System:
The UNT Digital Library