Collection
Technical Report Archive and Image Library
120
National Advisory Committee for Aeronautics Collection
97
USGS Topographic Map Collection
60
USDA Farmers' Bulletins
17
Government Documents A to Z Digitization Project
8
Texas State Publications
6
TRAIL Microcard Collection
1
Texas House of Representatives Journals
1
Texas Senate Journals
1
United States Experiment Station Record
1
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Serial/Series Title
NACA Technical Memorandums
50
NACA Technical Reports
27
NACA Technical Notes
19
Farmers' bulletin (United States. Dept. of Agriculture)
17
United States Bureau of Mines Reports
16
30 Minute Series
6
National Bureau of Standards Reports
6
15 Minute Series (Topographic)
5
Bulletin (Texas. Department of Agriculture)
3
National Bureau of Standards circular
3
15 More
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207 Matching Results
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Accelerations in Flight
Report discussung work on accelerometry was done at McCook Field for the purpose of continuing the work done by other investigators and obtaining the accelerations which occur when a high-speed pursuit airplane is subjected to the more common maneuvers. The accelerations obtained in suddenly pulling out of a dive with well-balanced elevators are shown to be within 3 or 4 per cent of the theoretically possible accelerations. The maximum acceleration which a pilot can withstand depends upon the length of time the acceleration is continued. It is shown that he experiences no difficulty under the instantaneous accelerations as high as 7.8 G., but when under accelerations in excess of 4.5 G., continued for several seconds, he quickly loses his faculties.
Date:
1925
Creator:
Doolittle, J. H.
Object Type:
Report
System:
The UNT Digital Library
Aerodynamic Characteristics of Aircraft With Reference to Their Use
Report discussing economic and design characteristics are examined in the design of airplanes and airships.
Date:
1925
Creator:
Panetti, M.
Object Type:
Report
System:
The UNT Digital Library
Aerodynamic characteristics of airfoils at high speeds
From Summary: "This report deals with an experimental investigation of the aerodynamical characteristics of airfoils at high speeds. Lift, drag, and center of pressure measurements were made on six airfoils of the type used by the air service in propeller design, at speeds ranging from 550 to 1,000 feet per second. The results show a definite limit to the speed at which airfoils may efficiently be used to produce lift, the lift coefficient decreasing and the drag coefficient increasing as the speed approaches the speed of sound. The change in lift coefficient is large for thick airfoil sections (camber ratio 0.14 to 0.20) and for high angles of attack. The change is not marked for thin sections (camber ratio 0.10) at low angles of attack, for the speed range employed. At high speeds the center of pressure moves back toward the trailing edge of the airfoil as the speed increases. The results indicate that the use of tip speeds approaching the speed of sound for propellers of customary design involves a serious loss in efficiency."
Date:
1925~
Creator:
Briggs, L. J.; Hull, G. F. & Dryden, H. L.
Object Type:
Report
System:
The UNT Digital Library
Aeronautic instruments. Section 1: general classification of instruments and problems including bibliography
This report is intended as a technical introduction to the series of reports on aeronautic instruments. It presents a discussion of those subjects which are common to all instruments. First, a general classification is given, embracing all types of instruments used in aeronautics. Finally, a classification is given of the various problems confronted by the instrument expert and investigator. In this way the following groups of problems are brought up for consideration: problems of mechanical design, human factor, manufacturing problems, supply and selection of instruments, problems concerning the technique of testing, problems of installation, problems concerning the use of instruments, problems of maintenance, and physical research problems. This enumeration of problems which are common to instruments in general serves to indicate the different points of view which should be kept in mind in approaching the study of any particular instrument.
Date:
1925
Creator:
Hersey, Mayo D.
Object Type:
Report
System:
The UNT Digital Library
Aircraft Engine Design
From Introduction: "The subject of this paper is so broad in scope that a large volume might be devoted to it. In a short paper of this kind it is possible simply to sketch in the high lights of aircraft engine design showing the development to date, the possibilities of the future, and the underlying fundamental principles. Summarizing this development and referring to the graph (Fig.1), we that there is now a water-cooled engine in every power from 150 to 800 HP. and an air-cooled engine in the 200 to 400 HP. classes."
Date:
January 1925
Creator:
Wilson, E. E.
Object Type:
Report
System:
The UNT Digital Library
Albany 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:
1925
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Annual Report for the National Advisory Committee for Aeronautics (10th) Administrative Report Including Technical Reports Nos. 186 to 209
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:
1925
Creator:
United States. National Advisory Committee for Aeronautics.
Object Type:
Report
System:
The UNT Digital Library
The application of propeller test data to design and performance calculations
From Summary: "This report is a study of a test data on a family of Durand's propellers (nos. 3, 7, 11, 82, 113, 139), which is fairly representative of conventional design. The test data are so plotted that the proper pitch and diameters for any given set of conditions are readily obtained. The same data are plotted in other forms which may be used for calculating performance when the ratio of pitch to diameter is known. These new plots supply a means for calculating the performance, at any altitude, of airplanes equipped with normal or supercharged engines."
Date:
January 1925
Creator:
Diehl, Walter S.
Object Type:
Report
System:
The UNT Digital Library
Aransas Pass 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:
1925
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Aspermont 4-a 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 1:48000
Date:
1925
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Astronomical Methods in Aerial Navigation
The astronomical method of determining position is universally used in marine navigation and may also be of service in aerial navigation. The practical application of the method, however, must be modified and adapted to conform to the requirements of aviation. Much of this work of adaptation has already been accomplished, but being scattered through various technical journals in a number of languages, is not readily available. This report is for the purpose of collecting under one cover such previous work as appears to be of value to the aerial navigator, comparing instruments and methods, indicating the best practice, and suggesting future developments.
Date:
1925
Creator:
Beij, K. Hilding
Object Type:
Report
System:
The UNT Digital Library
Ballinger 3-d 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 1:48000
Date:
1925
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Ballinger 4-c 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 1:48000
Date:
1925
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Brady 1-a 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 1:48000
Date:
1925
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Brady 1-b 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 1:48000
Date:
1925
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Brady 2-b 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 1:48000
Date:
1925
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Breckenridge 1-b 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 1:48000
Date:
1925
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Breeds of Sheep for the Farm
Revised edition. Report discussing the different breeds of sheep raised by farmers and their suitability for either wool or mutton.
Date:
1925
Creator:
Marshall, F. R.
Object Type:
Pamphlet
System:
The UNT Digital Library
Brownwood 3-b 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 1:48000
Date:
1925
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Brownwood 3-d 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 1:48000
Date:
1925
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Brownwood 4-c 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 1:48000
Date:
1925
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Buck Hill 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:
1925
Creator:
United States. Army. Corps of Engineers.
Object Type:
Map
System:
The Portal to Texas History
Burnet 2-c 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 1:48000
Date:
1925
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Burnet 3-b 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 1:48000
Date:
1925
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History