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Motor-Vehicle Headlighting (open access)

Motor-Vehicle Headlighting

A report on the necessity of improved motor-vehicle lighting.
Date: August 5, 1925
Creator: Carlson, R. E.
System: The UNT Digital Library
Formulas, Tables and Curves for Computing the Mutual Inductance of Two Coaxial Circles (open access)

Formulas, Tables and Curves for Computing the Mutual Inductance of Two Coaxial Circles

Scientific paper issued by the Bureau of Standards over the mutual inductance of two coaxial circles. As stated in the abstract, "a number of examples are given to show the methods of computation by the different formulas, tables, and charts" (p. 541). This paper includes tables, and illustrations.
Date: August 5, 1924
Creator: Curtis, Harvey L. & Sparks, C. Matilda
System: The UNT Digital Library
Drag and Cooling With Various Forms of Cowling for A "Whirlwind" Radial Air-Cooled Engine - 1 (open access)

Drag and Cooling With Various Forms of Cowling for A "Whirlwind" Radial Air-Cooled Engine - 1

"This report presents the results of an investigation undertaken in the 20-foot Propeller Research Tunnel at Langley Field on the cowling of radial air-cooled engines. A portion of the investigation has been completed, in which several forms and degrees of cowling were tested on Wright "Whirlwind" J-5 engine mounted in the nose of a cabin fuselage. The cowlings varied from the one extreme of an entirely exposed engine to the other in which the engine was entirely inclosed. Cooling tests were made and each cowling modified, if necessary, until the engine cooled approximately as satisfactorily as when it was entirely exposed" (p. 165).
Date: October 5, 1928
Creator: Weick, Fred E.
System: The UNT Digital Library
Tests on Models of Three British Airplanes in the Variable Density Wind Tunnel (open access)

Tests on Models of Three British Airplanes in the Variable Density Wind Tunnel

"This report contains the results of tests made in the National Advisory Committee for Aeronautics variable density wind tunnel on three airplane models supplied by the British Aeronautical Research Committee. These models, the BE-2E with R.A.F. 19 wings, the British Fighter with R.A.F. 15 wings, and the Bristol Fighter with R.A.F. 30 wings, were tested over a wide range in Reynolds numbers in order to supply data desired by the Aeronautical Research Committee for scale effect studies. The maximum lifts obtained in these tests are in excellent agreement with the published results of British tests, both model and full scale" (p. 451).
Date: April 5, 1927
Creator: Higgins, George J.; Diehl, W. S. & DeFoe, George L.
System: The UNT Digital Library
Annual Report of the Boy Scouts of America: 1925 (open access)

Annual Report of the Boy Scouts of America: 1925

Annual report submitted by the Boy Scouts of America to Congress describing highlights from 1926, activities, finance, organizational leadership, and other information about scouting programs.
Date: June 5, 1926
Creator: Boy Scouts of America
System: The Portal to Texas History