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Aviation Engines in the Endurance Contest

Description: The contest for engines of great endurance had entries of 13 types by the following firms: Breguet, Farman, Fiat, Hispano-Suiza, Lorraine-Dietrich, Panhard-Levassor, Peugeot, Renault, and Salmson.
Date: December 1924
Creator: Lehr, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Measuring Vibration and Torque With the Oscillograph

Description: "The recent development of technical science demands maximum reliability of functioning, together with maximum utilization of construction materials. For this purpose we must know what stresses are produced during functioning. One cause of great stresses are mechanical vibrations and this report describes a method of using an oscilloscope to measure the stresses of rapidly changing phenomena" (p. 1).
Date: December 1924
Creator: Elsässer, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nomogram for Correcting Drag and Angle of Attack of an Airfoil Model in an Air Stream of Finite Diameter

Description: In experimenting with airfoil models in a wind tunnel, the magnitude of the forces acting on the model is affected by the fact that the air stream in which the model is suspended, has a restricted cross-section. In order to utilize the results for an airplane in an unlimited quantity of air, a correction must be made. The magnitude of this correction was determined by Prandtl by the application of his wing theory.
Date: December 1924
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tests of rotating cylinders

Description: Tests were made in the no. 1 (5 ft. atmospheric) wind tunnel at Langley Memorial Aeronautical Laboratory to determine the air forces acting on rotating cylinders with axes perpendicular to the direction of motion. Two cylinders were tested, one with a circular cross-section and the other with a Greek cross. The cross cylinder and compound strut were found to not be as efficient as the circular one.
Date: December 1924
Creator: Reid, Elliott G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Testing of Aviation Engines Under Approximate Altitude Conditions

Description: Note presenting a description of the aviation testing laboratory that has been built at the Bureau of Standards in order to test aviation engines under approximate engine conditions. A description of some of the calculations that are used to compare experimental and theoretical results are provided.
Date: December 1924
Creator: DuBois, R. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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