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 Decade: 1920-1929
 Year: 1923
 Collection: Technical Report Archive and Image Library
A Biological Survey of the Pribilof, Alaska

A Biological Survey of the Pribilof, Alaska

Date: June 20, 1923
Creator: Preble, Edward A. & McAtee, W. L.
Description: Brief summary of the geographic distribution, habits, and habitats of the birds, mammals, insects, arachnids, and chilopods of the Pribilof Islands.
Contributing Partner: UNT Libraries Government Documents Department
Carbon Tetrachloride Extinguisher of Electric Fires

Carbon Tetrachloride Extinguisher of Electric Fires

Date: July 1923
Creator: Katz, S. H.; Gleim, E. J. & Bloomfield, J. J.
Description: Report discussing "the extent and nature of the hazards to firefighters from gases and smoke resulting from the application of carbon tetrachloride extinguisher to electric arcs, burning insulation or fires such as may occur in electrical apparatus and machinery. The experiments described were made for the purpose of determining the nature of gases and smoke and ascertaining their toxic properties" (p. 1).
Contributing Partner: UNT Libraries Government Documents Department
Comparison of Gas Masks, Hose Masks, and Oxygen-Breathing Apparatus

Comparison of Gas Masks, Hose Masks, and Oxygen-Breathing Apparatus

Date: June 1923
Creator: Katz, S. H. & Bourquin, J. J.
Description: Report providing information about the most appropriate kinds of breathing apparatus -- gas masks, hose masks, or self-contained oxygen-breathing apparatus -- to use in different situations.
Contributing Partner: UNT Libraries Government Documents Department
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
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
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
"Schneebeli" and "Birger" silencers

"Schneebeli" and "Birger" silencers

Date: June 1, 1923
Creator: Dollfus, Charles
Description: The Schneebeli silencer is made entirely of soft sheet steel. It is connected with the engine for receiving the exhaust gases, and consists of two parts: the silencer proper and a conical exit. The Birger silencer, made by the Ad Astra Company in Switzerland, is based on the principle of rapid cooling of the exhaust gases.
Contributing Partner: UNT Libraries Government Documents Department
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