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 Decade: 1920-1929
 Year: 1923
 Collection: Technical Report Archive and Image Library
Tables of thermodynamic properties of ammonia

Tables of thermodynamic properties of ammonia

Date: April 16, 1923
Creator: unknown
Description: A report containing tables of thermodynamic properties of ammonia.
Contributing Partner: UNT Libraries Government Documents Department
Mollier Chart of Properties of Ammonia, 1923

Mollier Chart of Properties of Ammonia, 1923

Date: May 1, 1923
Creator: United States. Bureau of Standards.
Description: Mollier chart of properties of ammonia.
Contributing Partner: UNT Libraries Government Documents Department
Performance of B. M. W. 185-Horsepower Airplane Engine

Performance of B. M. W. 185-Horsepower Airplane Engine

Date: January 1, 1923
Creator: Sparrow, S W
Description: This report deals with the results of a test made upon a B. M. W. Engine in the altitude chamber of the Bureau of Standards, where controlled conditions of temperature and pressure can be made to simulate those of the desired altitude. A remarkably low value of fuel consumption - 041 per B. H. P. hour - is obtained at 1,200 revolutions per minute at an air density of 0.064 pound per cubic foot and a brake thermal efficiency of 33 per cent and an indicated efficiency of 37 per cent at the above speed and density. In spite of the fact that the carburetor adjustment does not permit the air-fuel ratio of maximum economy to be obtained at air densities lower than 0.064, the economy is superior to most engines tested thus far, even at a density lower than 0.064, the economies superior to most engines tested thus far, even at a density (0.03) corresponding to an altitude of 25,000 feet. The brake mean effective pressure even at full throttle is rather low. Since the weight of much of the engine is governed more by its piston displacement than by the power developed, a decreased mean effective pressure usually ...
Contributing Partner: UNT Libraries Government Documents Department
Technical Section of Aeronautics

Technical Section of Aeronautics

Date: February 1, 1923
Creator: Lesage, Andre
Description: The duties of the Technical Section are listed along with facilities for testing. Different categories of tests are discussed and some sample results included.
Contributing Partner: UNT Libraries Government Documents Department
Spontaneous combustion of hydrogen

Spontaneous combustion of hydrogen

Date: December 1, 1923
Creator: Pothmann, PH & Nusselt, Wilhelm
Description: It is shown by the author's experiments that hydrogen which escapes to the atmosphere through openings in the system may burn spontaneously if it contains dust. Purely thermal reasoning can not account for the combustion. It seems to be rather an electrical ignition. In order to determine whether the cause of the spontaneous ignition was thermo-chemical, thermo-mechanical, or thermo-electrical, the experiments in this paper were performed.
Contributing Partner: UNT Libraries Government Documents Department
Rules and regulations governing the Fokker Soaring-Flight Contest over water or level land

Rules and regulations governing the Fokker Soaring-Flight Contest over water or level land

Date: June 1, 1923
Creator: unknown
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Replacing the weight of materials consumed on airships

Replacing the weight of materials consumed on airships

Date: June 1, 1923
Creator: Crocco, G A
Description: Two methods to replace the weight of gas lost on long airship flights are discussed: condensing the water of combustion and thermic sustentation. In the present article we will discuss the first method, leaving the second to be examined in a subsequent article.
Contributing Partner: UNT Libraries Government Documents Department
Rules and regulations of the 1923 Rhon Soaring-Flight Contest

Rules and regulations of the 1923 Rhon Soaring-Flight Contest

Date: May 1, 1923
Creator: unknown
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Vorticism in aeronautics

Vorticism in aeronautics

Date: August 1, 1923
Creator: Sayers, W H
Description: Since the war there has been a considerable advance in knowledge on the subject of the airfoil and its behavior. The theory is now sufficiently advanced to make it possible to predict and to calculate certain results which previously could only be attained by direct experiment. The vortex theory receives special attention.
Contributing Partner: UNT Libraries Government Documents Department
Longitudinal balancing of airplanes

Longitudinal balancing of airplanes

Date: February 1, 1923
Creator: Eteve, Albert
Description: The object of the present communication is to determine the best method for locating the center of lift of an airplane and to provide a method for making corrections. The method employed is very simple, being based on the positions given the elevator during flights at different speeds.
Contributing Partner: UNT Libraries Government Documents Department
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