National Advisory Committee for Aeronautics (NACA) - 1,438 Matching Results

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Some Principles Governing the Establishment of Meteorological Stations Along Air Routes

Description: The organization of a meteorological service for an air route involves the solution of two distinct problems: distribution and grouping of meteorological stations and communications. Experience gained in the establishment of two lines, Paris-Warsaw and Constantinople-Bucharest enables us to establish certain principles, which may be of interest to note here.
Date: March 1922
Creator: Aujames, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The "Universal Propeller": Built by Paragon Engineers, Inc., Baltimore, MD.

Description: At the request of the N.A.C.A. the "Universal Propeller" was operated and explained by the inventor, Mr. Spencer Heath, for the purpose of demonstrating the following features of design: 1) Elimination of continuously running gears, collars or bearings in the pitch control mechanism; 2) The use of engine power in place of manual labor in changing blade angle; 3) The absence of any structural limitation to the range of blade angles available and the possibility of limiting the blade travel betwe… more
Date: March 1922
Creator: Bacon, David L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Spontaneous Combustion of Hydrogen

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.
Date: March 4, 1922
Creator: Pothmann, P. & Nusselt, Wilhelm
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Applying the results of experiments on small models in the wind tunnel to the calculation of full-sized aircraft

Description: This report presents the attempt to develop a law which will permit the use of results obtained on small models in a tunnel for the calculation of full-sized airplanes, or if it exists, a law of similitude relating air forces on a full-sized plane to those on a reduced scale model.
Date: April 1922
Creator: Robert
Item Type: Refine your search to only Report
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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Distribution of Pressure on Fuselage of Airplane Model: Communication From Rijks-Studiedienst Voor De Luchtvaart of Amsterdam

Description: In order to study the distribution of the pressure on the surfaces of a fuselage and the influence of the wing on the air flow along these surfaces, we have made tests pertaining to the bottom and one side. In this particular case, the wing causes an increase in pressure along the sides of the fuselage.
Date: April 1922
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Influence of Elliptical Distribution of Lift on Strength of Airplane Wings

Description: "Hitherto it has been generally assumed, in calculating the fall of an airplane, that the forces withstood by the latter were distributed uniformly throughout the whole length of the wing. In reality this is not the case and German engineers in particular are now assuming an elliptical distribution of the forces. The latter hypothesis has made it possible to carry out a certain number of calculations which have been verified by experiment" (p. 1).
Date: April 1922
Creator: Dorand
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Irresponsibility Clause in Air Traffic Contracts

Description: This report examines the question of the responsibility of the carrier in air traffic. The French were concerned about the competitive advantage the English companies enjoyed because of differences in their respective laws.
Date: April 1922
Creator: Porquet
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Joukowski Wings

Description: To sum up, Professor Joukowski's theory of supporting wings renders it possible to calculate the coefficient of lift in terms of the angle of attack, and Prandtl's coefficient of induced drag and the correction of the angle of attack in terms of the disposition and aspect ratio of the wings.
Date: April 1922
Creator: Margoulis, W.
Item Type: Refine your search to only Report
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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Propeller Theory of Professor Joukowski and His Pupils

Description: This report gives a summary of the work done in Russia from 1911 to 1914, by Professor Joukowski and his pupils. This summary will show that these men were the true originators of the theory, which combines the theory of the wing element and of the slipstream.
Date: April 1922
Creator: Margoulis, W.
Item Type: Refine your search to only Report
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 … more
Date: April 1922
Creator: Senouque, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Wing Resistance Near the Ground

Description: In the present treatise, a convenient method will be indicated, which makes it possible to determine the polar curve of an airplane at short distances from the ground by a simple short calculation, when the polar curve is known for flight in unlimited space.
Date: April 1922
Creator: Wieselsberger, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Air traffic

Description: This report presents a recounting of the steps taken by France to establish national and international regulation over air traffic.
Date: May 1922
Creator: Sudre, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Aviation and Insurance

Description: This article considers some of the causes which hinder the development of aircraft insurance. Different risks are discussed as well as the causes of aircraft accidents. Pilot error, poor airdromes, weather conditions, poorly adapted airplanes, and engine failures are all examined and some conclusions are made.
Date: May 1922
Creator: Mayo, R. H.
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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