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Duralumin - Defects and Failures (open access)

Duralumin - Defects and Failures

It is proposed in this paper to identify some of the defects and failures in duralumin most frequently encountered by the aircraft industry with a view to indicate their importance. The defects and failures in duralumin may be classified into the following groups: 1) defects produced during manufacture; 2) defects produced during fabrication; 3) corrosion and erosion; and 4) fatigue failures. Only the first two will be covered in this report.
Date: December 1927
Creator: Nelson, Wm.
Object Type: Report
System: The UNT Digital Library
Experiments on Airfoils With Aileron and Slot (open access)

Experiments on Airfoils With Aileron and Slot

The present report contains the results of a few experiments on three airfoils to which the rear portions, having chords respectively 1/4, 1/3, and 2/5 of the total chords, are hinged so as to form ailerons, especial attention being given to the shape of the slot between the aileron and the main portion of the aileron.
Date: November 1927
Creator: Betz, A.
Object Type: Report
System: The UNT Digital Library
Report on the Agricultural Experiment Stations, 1926 (open access)

Report on the Agricultural Experiment Stations, 1926

Volume provides a summary of the progress of each agricultural experiment station. Also includes statistics, a bibliography of experiment station publications, and selected studies.
Date: September 1927
Creator: United States. Office of Experiment Stations.
Object Type: Book
System: The UNT Digital Library
Revision of the American Lemming Mice (Genus Synaptomys) (open access)

Revision of the American Lemming Mice (Genus Synaptomys)

Brief summary of the geographic distribution, habits, history, and subgenera of Synaptomys.
Date: June 30, 1927
Creator: Howell, A. Brazier
Object Type: Report
System: The UNT Digital Library

Quanah 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: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Bart 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: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Lufkin 3-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 1:24000
Date: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Blum 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: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

New Braunfels 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: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Mathis 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: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Graham 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: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Bart 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: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Lufkin 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 1:24000
Date: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Georgetown 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: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

New Braunfels 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: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

New Braunfels 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: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Marquez 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: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Grosvenor 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: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Oakville 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: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Blum 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: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Mineral Wells 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: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Dallas 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: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Pearsall 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: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Marquez 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: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History