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Characteristics of a boat type seaplane during take-off

Description: This report, on the planing and get-away characteristics of the F-5-L, gives the results of the second of a series of take-off tests on three different seaplanes conducted by the National Advisory Committee for Aeronautics at the suggestion of the Bureau of Aeronautics, Navy Department. The single-float seaplane was the first tested and the twin-float seaplane is to be the third. The characteristics of the boat type were found to be similar to the single float, the main difference being the inc… more
Date: January 1926
Creator: Crowley, J. W., Jr. & Ronan, K. M.
Item Type: Refine your search to only Report
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The characteristics of the N.A.C.A. M-12 airfoil section

Description: The data obtained on the NACA M-12 airfoil, tested at twenty atmosphere density in the NACA variable density wind tunnel, have been extended by additional tests at one and at twenty atmospheres under improved conditions. The results of these tests are given. Considerable scale effect was found.
Date: August 1926
Creator: Higgins, George J.
Item Type: Refine your search to only Report
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Coal-Mine Fatalities in May, 1926

Description: Report issued by the U.S. Bureau of Mines on the coal-mining related deaths in May, 1926. The 126 accidents are documented and categorized. The accidents are analyzed in order to prevent future accidents, and to implement safety procedures. This report includes tables.
Date: June 1926
Creator: Adams, William Waugh
Item Type: Refine your search to only Report
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Coal-Mine Fatalities in the United States, 1925

Description: Report compiled by the U.S. Bureau of Mines including statistics on fatalities in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1926
Creator: Adams, William W.
Item Type: Refine your search to only Report
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Comparison of tests on air propellers in flight with wind tunnel model tests on similar forms

Description: From Summary: "The purpose of this investigation was to determine the performance, characteristics, and coefficients of full-sized air propellers in flight and to compare these results with those derived from wind-tunnel tests on reduced scale models of similar geometrical form. The full-scale equipment comprised five propellers in combination with a VE-7 airplane and Wright E-4 engine. This part of the work was carried out at the Langley Memorial Aeronautical Laboratory, between May 1 and Augu… more
Date: 1926
Creator: Durand, W. F. & Lesley, E. P.
Item Type: Refine your search to only Report
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Cooling of Air-Cooled Engines by Forced Circulation of Air

Description: This report presents the results of experiments on aerodynamic fuselages in which an air current is forced into the nose of the fuselage by the action of several fans revolving with the propeller. The air is then guided by special deflectors which cause it to flow along the exhaust pipes and cylinders and then, after having been utilized, pass out through annular ports. This system of cooling worked perfectly at all speeds.
Date: October 1926
Item Type: Refine your search to only Report
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The De Havilland "Moth"

Description: Officially designated D.H. 60, De Havilland's Moth is a small, simply made, 770 lb. aircraft. It has had it's fittings reduced in number to assist in this, seats 2 (including pilot) and uses a Cirrus 60 HP. engine.
Date: October 1926
Item Type: Refine your search to only Report
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Description and Laboratory Tests of a Roots Type Aircraft Engine Supercharger

Description: "This report describes a roots type aircraft engine supercharger and presents the results of some tests made with it at the Langley Field Laboratories of the National Advisory Committee for Aeronautics. The supercharger used in these tests was constructed largely of aluminum, weighed 88 pounds and was arranged to be operated from the rear of a standard aircraft engine at a speed of 1 1/2 engine crankshaft speed. The rotors of the supercharger were cycloidal in form and were 11 inches long and 9… more
Date: 1926
Creator: Ware, Marsden
Item Type: Refine your search to only Report
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Designing Seaplane Hulls and Floats

Description: Experimental data, such as the results of tank tests of models, render it possible to predict, at least in principle, as to how a hull or float of a given shape will comport itself. We will see further along, however, how uncertain these methods are and how they leave room for empiricism, which will reign for a long time yet in seaplane research bureaus.
Date: August 1926
Creator: Benoit
Item Type: Refine your search to only Report
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Development of Light and Small Airplanes

Description: Memorandum presenting an overview of the development of light and small airplanes. Some of the characteristics explored include the development of airplanes of medium weight, development in countries other than Germany, development of light airplanes, general constructive fiducial lines, safety problems, the economy problem, and some special structural considerations are provided.
Date: July 1926
Creator: Lachmann, G.
Item Type: Refine your search to only Report
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Devices for Prevention of Stalled Flight

Description: Memorandum describing warning or correcting devices based on the registering of two distinct factors, the air speed and the angle of attack. The authors of the report define the conditions for the flight of an airplane and then study the causes of stalled flight in the different cases where it can occur.
Date: November 1926
Creator: Mazer, Paul
Item Type: Refine your search to only Report
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Digest of Some of the Speeches Made at the Fifteenth Regular Meeting of the Wissenschaftliche Gesellschaft Für Luftfahrt: June 17, 1926, in Dusseldorf, Germany

Description: Memorandum presenting a description of some of the speeches made at the fifteenth regular meeting of the Wissenschaftliche Gesellschaft für Luftfahrt. Many of the speeches were conducted on aircraft design and construction, but some covered topics like statistics.
Date: September 1926
Item Type: Refine your search to only Report
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The Drag of Airships : II - Drag of Bare Hulls

Description: "The extension of wind tunnel tests of models of airship hulls to full scale requires an extension from a VL of the order of less than 500 sq.ft./sec., to that of 80000 sq.ft./sec., where V = air speed, feet per second, L = length in feel of the particular form of hull. The reason for this research was to furnish the airship designer with a method for finding the VL curve of any conventional type of hull, using data obtained from actual performance of airships flown prior to 1926" (p. 1).
Date: October 1926
Creator: Havill, Clinton H.
Item Type: Refine your search to only Report
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Effect of Protruding Gasoline Tanks Upon the Characteristics of an Airfoil

Description: Note presenting an investigation to determine the effect of a gasoline tank protruding from the center section of a wing on the aerodynamic characteristics of the wing. The results are presented in the form of polar curves, curves of D/L against lift coefficient, and the curves of lift and drag coefficient against the angle of attack.
Date: October 1926
Creator: Jacobs, Eastman N.
Item Type: Refine your search to only Report
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The effect of tube length upon the recorded pressures from a pair of static orifices in a wing panel

Description: Report presenting an investigation to determine the effect of tubing length on the indicated pressure values as ascertained in the pressure distribution measurements on the PW-9. The purpose was to determine the percentage of error in the pressure readings which might be caused by various lengths of tubing between the pressure orifices and pressure cell at the manometer. The differences in head caused by variations in the length of tubing are small, the lowest recorded being zero, the highest 2… more
Date: November 1926
Creator: Carroll, T. & Mixon, R. E.
Item Type: Refine your search to only Report
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Electric Shot-Firing in Mines, Quarries, and Tunnels

Description: From Introduction: "Data collected by the Bureau of Mines indicate the United States a large percentage of the blasting in quarries, shafts, and tunnels, and from 15 to 25 percent of the blasts in mining operations, are set off electrically. The Bureau of Mines is interested in electric shot-firing because of its use in mining, and especially because electric methods, when properly applied, are undoubtedly safer than other methods commonly used."
Date: 1926
Creator: Ilsley, L. C. & Hooker, A. B.
Item Type: Refine your search to only Report
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Endurance Tests of Tires

Description: Technical paper issued by the Bureau of Standards over studies conducted on the endurance of tires. 230 tires of 36 different brands were tested during the studies. The results of the studies are presented and discussed. This paper includes tables, and photographs.
Date: May 25, 1926
Creator: Holt, W. L. & Wormeley, P. L.
Item Type: Refine your search to only Report
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Experimental Investigation of the Physical Properties of Medium and Heavy Oils, Their Vaporization and Use in Explosion Engines Part 1

Description: While little has been accomplished in obtaining an abundant supply of light oils from coal and heavy oils, progress has been made on engine design to make use of the heavier oils. Progress has been made in two different directions which are outlined in this paper: the group of engines with medium and high-pressure carburetion in the cylinder; and the group of engines with low-pressure carburetion of the heavy oils before reaching the cylinder.
Date: May 1926
Creator: Heinlein, Fritz
Item Type: Refine your search to only Report
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