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 Decade: 1920-1929
 Year: 1923
 Collection: Technical Report Archive and Image Library
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
Engines and fuels

Engines and fuels

Date: August 1, 1923
Creator: unknown
Description: The report considers the effect on engines of the varying types of fuels now in use. Different types of fuels are examined and the influence of physical characteristics are considered.
Contributing Partner: UNT Libraries Government Documents Department
Aviation spirit - past, present, and future

Aviation spirit - past, present, and future

Date: September 1, 1923
Creator: Dunstan, A E & Thole, F B
Description: The volatile fuel of the high-speed internal combustion engine has, in the past, consisted almost exclusively of the lighter distillates from crude petroleum. Alternative and supplementary fuels are discussed such as: tetraline, dekalin, alcohol, cyclo-hexenes.
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
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
Carburetion in aviation engines

Carburetion in aviation engines

Date: August 1, 1923
Creator: POINCARE
Description: This report tries to solve the problem of supplying the engine cylinders with a mixture of fuel and air in the right ratio to obtain the greatest power from the engine with the least consumption of fuel.
Contributing Partner: UNT Libraries Government Documents Department
Possibility of profitable air traffic between Lisbon and Rio de Janeiro

Possibility of profitable air traffic between Lisbon and Rio de Janeiro

Date: November 1, 1923
Creator: Sherz, Walter
Description: Different aspects of an airship line between Lisbon and Rio de Janeiro are presented. Some of the factors discussed are: the number of passengers, fuel consumption, design, itinerary, airports, flight times, and income.
Contributing Partner: UNT Libraries Government Documents Department
Government relations with air traffic companies and owners of touring airplanes

Government relations with air traffic companies and owners of touring airplanes

Date: September 1, 1923
Creator: unknown
Description: This report presents a recapitulation of air traffic in France and her colonies as well as a discussion of the subsidies provided by the government.
Contributing Partner: UNT Libraries Government Documents Department
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