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Control of Airplanes at Low Speeds

Description: Loss of control over the orientation of an airplane as the incidence approaches and enters the region of stalled flight is a prolific cause of serious accidents. This report discusses methods of landing at slow speeds approaching stall.
Date: September 1923
Creator: Wood, R. McKinnon
Partner: UNT Libraries Government Documents Department
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Monoplanes or Biplanes?

Description: This article presents a discussion of the relative merits between monoplanes and biplanes. A comparison of the aerodynamic qualities and advantages of both types are provided.
Date: November 1923
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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Inherent Stability of Helicopters

Description: The equilibrium, in still air, of a "stationary" helicopter (i.e., of one having neither vertical nor translational velocity, but a tendency to remain practically motionless within restricted limits of space) presents some difficulty in practice and justifies a theoretical investigation of its "inherent stability," i.e., independent of the pilot.
Date: October 1923
Creator: Crocco, G. Arturo
Partner: UNT Libraries Government Documents Department
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Absorbing landing shocks

Description: Report discussing tires, steel springs, hydraulic shock absorbers, and axle travel are all examined in relation to absorbing landing shocks.
Date: August 1923
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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Seaplanes for Commerce

Description: The advantages of using seaplanes for commercial purposes is discussed. The three primary advantages described include their superior speeds over existing means of transport on the same routes, the available landing fields when flying over the water, and the reduction of distance from the airport to the city is serves due to the seaplane's ability to land in water.
Date: March 1923
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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Testing Airplanes in Flight: Determining Position of Resultant of Action of Air and Longitudinal Stability of an Airplane at Different Angles of Attack

Description: "Measurements made during flight with the triple recording device which gives the horizontal and vertical speeds of an airplane and the angle it makes with the horizon, render it possible to calculate its lift, its drag, and R the resultant of the action of the air both in magnitude and direction, but with these data alone, it is impossible to determine the position of this resultant in the plane of symmetry of the airplane. We will also see how we may determine the position of R during flight and then calculate the variations in the stability of an airplane" (p. 1).
Date: April 1922
Creator: Senouque, A.
Partner: UNT Libraries Government Documents Department
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Commercial Airplanes and Seaplanes

Description: This report considers as the dominating characteristic, either the load carried, the speed, the radius of action, the fuel consumption, the activity of transport, or, lastly, the qualities of comfort and safety. The first four factors determine the theoretical efficiency, while the others determine its practical efficiency.
Date: April 1922
Creator: Royer, Etienne
Partner: UNT Libraries Government Documents Department
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Metal Construction

Description: The future development of aerial navigation is closely connected with the condition of obtaining airplanes of great stability and sufficient strength. Different construction materials such as wood, aluminum, iron, and alloys are examined to determine which materials or combination of materials provides a greater coefficient of safety.
Date: April 1922
Creator: Verduzio, Rodolfo
Partner: UNT Libraries Government Documents Department
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Engine Pistons of Light Metal

Description: This report presents the results of testing 32 sets of light metal pistons from 16 different aluminum and magnesium alloys, 2 sets of cast iron pistons, and one piston of pure electrolytic copper. The many-fold mutual relations between material properties, shape, thermic and dynamic processes in the engine were clarified by comprehensive technical, thermic, chemical, physical and metallographic investigations of pistons and piston materials.
Date: June 1922
Creator: Becker, G.
Partner: UNT Libraries Government Documents Department
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Effect of Structure in Middle Part of Leading Edge of a Thick Wing: Communication From Rijks-Studiedienst Voor De Luchtvaart of Amsterdam

Description: The experiments herein described were made for the purpose of finding whether removing a larger portion of the wing to improve the pilot's view would be possible, without too great detriment to the aerodynamic properties of the airplane. The experiments were conducted on a wing similar to the Fokker F III.
Date: June 1922
Partner: UNT Libraries Government Documents Department
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Problem of the Slotted Wing: A Communication From the Aerodynamic Institute of the Aachen Technical High School

Description: "It is to be expected that the advantageous properties, hitherto discovered in many slotted wing sections, depend very largely on the contour of the slot and the structural details of the wing. It is therefore of interest, aside from measurements on wings of constant cross-section along the span, to measure also wing models in which the structural details have already been given practical consideration" (p. 1).
Date: June 1922
Creator: Klemperer, W.
Partner: UNT Libraries Government Documents Department
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The R-38 Catastrophe and the Mechanics of Rigid Airship Construction

Description: An airship frame may be regarded as a rigid girder subjected to a number of forces which, according to their nature, may be classified as follows: weight or loads (force of gravity); lifting forces (aero-static); accelerations (dynamic). These forces must be in equilibrium in the three most important cases during flight: 1) when the airship is floating (aerostatic problem); 2) when flying without acceleration (aerodynamic problem). 3) When under the influence of any accelerating force (dynamic problem). This report will briefly discuss each of these cases in regard to the R-38 airship accident.
Date: June 1922
Creator: Herrera, Emilio
Partner: UNT Libraries Government Documents Department
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Comfort in Flight

Description: Some advances in passenger comfort are discussed, namely, ventilated cabins, heating, seating arrangements, and doors.
Date: June 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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The Prospects of the Helicopter

Description: The advantages of helicopters are listed along with a discussion of safety devices, the problems of control, and the need for horizontal flight.
Date: June 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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Technical Problems of Commercial Flying

Description: The technical requirements for commercial aircraft are listed, which include: safety, economy and comfort. The author lists various methods to increase these requirements in commercial aircraft.
Date: May 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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The Choice of Air Routes

Description: The author lists rules for the development and planning of air routes. He uses as examples India and Texas, as well as discussing the need for more landing fields.
Date: May 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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Night Flying

Description: Dr. Warner examines the utility and economy of flying at night when flying passengers. Some of the points discussed include lighted landing fields, the possibility of using airships, and the cost of landing fields.
Date: May 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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Mechanical Aids to Flight

Description: This report examines the great utility and safety of using instruments when flying. Instruments can be especially useful in conditions when the pilot has trouble spatially orienting himself.
Date: May 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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