The Estimation of Airplane Performance From Wind Tunnel Tests on Conventional Airplane Models (open access)

The Estimation of Airplane Performance From Wind Tunnel Tests on Conventional Airplane Models

Calculations of the magnitude of the correction factors and the range of their variations for wind tunnel models used in making aircraft performance predictions were made for 23 wind tunnel models. Calculated performances were compared with those actually determined for such airplanes as have been built and put through flight test. Except as otherwise noted, all the models have interplane struts and diagonal struts formed to streamwise shape. Wires were omitted in all cases. All the models were about 18 inches in span and were tested in a 4-foot wind tunnel. Results are given in tabular form.
Date: May 1925
Creator: Warner, Edward P. & Ober, Shatswell
System: The UNT Digital Library
The comparison of well-known and new wing sections tested in the variable density wind tunnel (open access)

The comparison of well-known and new wing sections tested in the variable density wind tunnel

Three groups of airfoils have been tested in the variable density wind tunnel. The first group contains three airfoils. The second group is a systematic series of twenty-seven airfoils. The third group consists of several frequently used wing sections.
Date: May 1925
Creator: Higgins, George J.
System: The UNT Digital Library
The Problem of Fuel Measurement: The Schiske "Konsummeter" (open access)

The Problem of Fuel Measurement: The Schiske "Konsummeter"

Any measuring device, which immediately indicates the rate of fuel consumption in the desired units, has the advantage of saving considerable time and fuel, besides facilitating the adjustment of the carburetor. The Schiske "Konsummeter" (made by the "PS-Vergaser and Apparatebau A. G.") was designed from the above viewpoint.
Date: May 1925
Creator: Praetorius, K. R. H.
System: The UNT Digital Library
European Commercial Aeronautics (open access)

European Commercial Aeronautics

"During the months of June to September, 1924, I personally visited the principal airports of Europe and traveled as a passenger some 6500 air miles on English, French, Romanian, Polish, German and Dutch air lines in order to investigate the development of commercial aviation abroad. The results of the investigation are embodied in a series of reports, of which a summary of the general findings is given below" (p. 1).
Date: May 1925
Creator: Van Zandt, J. Parker
System: The UNT Digital Library
Alloys Similar to Duralumin Made in Other Countries Than Germany (open access)

Alloys Similar to Duralumin Made in Other Countries Than Germany

Attempts by other countries to develop patents for alloys similar to duralumin are presented. Duralumin is aluminum alloyed with 3.5-4.5% copper, 0.5% magnesium, and 0.25-1% of manganese. A description of various materials that some have attempted to patent are provided.
Date: May 1925
Creator: Meissner, K. L.
System: The UNT Digital Library
Structural Methods Employed by the Schutte-Lanz Airship Company (open access)

Structural Methods Employed by the Schutte-Lanz Airship Company

"This article is based on the experience of the Schute-Lanz Airship Company in light construction. The object is to stimulate the employment of these methods in other fields of industry" (p. 1).
Date: May 1925
Creator: Gentzcke
System: The UNT Digital Library