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Experimental Investigation of the Effect of an Oscillating Airstream (Katzmayr Effect) on the Characteristics of Airfoils

Description: A series of experiments were conducted related to the action of an airstream oscillating vertically on supporting surfaces. The object of the experiments was to verify the very interesting results of Mr. Katzmayr, Director of the Vienna Aerodynamics Laboratory, and, if possible, to obtain more complete data on the effect of the amplitude and velocity of the oscillations of the airstream. The results obtained by Mr. Katzmayr are briefly summarized. The conduct of the numerous experiments to veri… more
Date: September 1924
Creator: Toussaint; Kerneis & Girault
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Short Method of Calculating Torsional Stresses in an Airplane Fuselage

Description: "This report deals with an investigation carried out in the Civil Engineering Laboratory of the University of California, to determine the accuracy of existing methods of computing the stresses in an airplane fuselage when subjected to torsion, and to derive a simple approximate formula for the rapid calculation of these stresses. The formula is derived by using the customary least work equation and considering each bay separately" (p. 1).
Date: September 1924
Creator: Younger, John E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Study of Static Stability of Airships

Description: The first section deals with the theoretical side of statical stability of airships in general. The second section deals with preliminary tests of the model and experiments for the determination of effects due to change of tail area, aspect ratio, tail form, and tail thickness.
Date: September 1924
Creator: Rizzo, Frank
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Micarta propellers IV : technical methods of design

Description: A description is given of the methods used in design of Micarta propellers. The most direct method for working out the design of a Micarta propeller is to start with the diameter and blade angles of a wooden propeller suited for a particular installation and then to apply one of the plan forms suitable for Micarta propellers. This allows one to obtain the corresponding blade widths and to then use these angles and blade widths for an aerodynamic analysis.
Date: September 1924
Creator: Caldwell, F. W. & Clay, N. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Provisional Rules for the Inspection of Aircraft Adopted by the French Bureau Veritas

Description: These new regulations are intended to replace those of November 1, 1922, and give the directions to be followed in the supervision of aircraft by the agents of the Aeronautical Section of the Bureau Veritas. The rules consist of four sections: rules regarding an aircraft leaving a repair shop, the objects of quarterly and weekly inspections, and rules regarding the upkeep and repair of airplanes.
Date: September 1924
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Recent Researches in Airship Construction 3: A New Type of Nonrigid Airship

Description: The author describes experiments in designing nonrigid airships. A nonrigid airship of 32,000 cubic meters, the PL 27 withstood all stresses with 20 kg/m(exp 2) hull pressure during its life of two years. The moment of resistance is known, as also the stresses in the envelope for the given hull pressure. The mean internal pressure necessary to give the airship the requisite rigidity and to prevent buckling was also investigated.
Date: September 1924
Creator: Naatz, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

General Rules for Metal Aircraft Construction

Description: "The Commissariat of Aviation deems it expedient to issue a few rules of a general character which should be followed by constructors in designing aircraft, into the manufacture of which metal enters to a considerable extent. The materials covered include: aluminum, duralumin, soft steel, high-resistance steel, in sheets, tubing, and shaped elements" (p. 1).
Date: September 1924
Creator: Guidoni, Alessandre
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experiments in the Use of Back Pressures on Oil Wells

Description: Technical paper issued by the Bureau of Mines over experiments conducted on the back pressure of oil wells. The results of the experiments are presented and discussed. This paper includes tables, photographs, and illustrations.
Date: September 1924
Creator: Swigart, T. E. & Bopp, C. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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