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The effects of fuel and cylinder gas densities on the characteristics of fuel sprays for oil engines

Description: "This investigation was conducted as a part of a general research on fuel-injection engines for aircraft. The purpose of the investigation was to determine the effects of fuel and cylinder gas densities with several characteristics of fuel sprays for oil engines. The start, growth, and cut-off of single fuel sprays produced by automatic injection valves were recorded on photographic film by means of special high-speed motion-picture apparatus" (p. 491).
Date: June 14, 1927
Creator: Joachim, W. F. & Beardsley, Edward G.
Item Type: Refine your search to only Report
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Flight tests on U.S.S. Los Angeles Part 1: full scale pressure distribution investigation

Description: The primary purpose of this investigation was to obtain simultaneous data on the loads and stress experience in flight by the U. S. S. Los Angeles which could be used in rigid airship structure design. A secondary object of the investigation was to determine the turning and drag characteristics of the airship. The aerodynamic loading was obtained by measuring the pressure at 95 locations on the tail surfaces, 54 on the hull, and 5 on the passenger car. These measurements were made during a seri… more
Date: August 14, 1928
Creator: De France, S. J.
Item Type: Refine your search to only Report
open access

The prediction of airfoil characteristics

Description: This report describes and develops methods by which the aerodynamic characteristics of an airfoil may be calculated with sufficient accuracy for use in airplane design. These methods for prediction are based on the present aerodynamic theory and on empirical formulas derived from data obtained in the N. A. C. A. variable density wind tunnel at a Reynolds number corresponding approximately to full scale. (author).
Date: March 14, 1928
Creator: Higgins, George J.
Item Type: Refine your search to only Report
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