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The Blackburn "Bluebird" Mark IV (British): All-Metal Biplane
Description:
Circular presenting a description of the Blackburn Bluebird Mark IV, which is an all-metal airplane. Details are provided regarding constructional features, the cockpit, the gasoline system, and the flight characteristics.
Date:
April 1929
Partner:
UNT Libraries Government Documents Department
Diaphragms for Aeronautic Instruments
Description:
This investigation was carried out at the request of the National Advisory Committee for Aeronautics and comprises an outline of historical developments and theoretical principles, together with a discussion of expedients for making the most effective use of existing diaphragms actuated by the hydrostatic pressure form an essential element of a great variety instruments for aeronautic and other technical purposes. The various physical data needed as a foundation for rational methods of diaphrag…
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Date:
1923
Creator:
Hersey, M. D.
Partner:
UNT Libraries Government Documents Department
Training Airplane "Avia B.H. 11."
Description:
Circular presenting a description of the Avia B.H. 11, which is a two-seat, low-wing monoplane with a plywood fuselage. The report describes the structural details and flight performance and provides blueprints and photographs of the aircraft.
Date:
May 1927
Partner:
UNT Libraries Government Documents Department
The De Havilland "Tiger Moth": A Low Wing Monoplane
Description:
With a speed of 186.5 M.P.H. and an operational altitude of 20,000 feet the De Havilland Tiger Moth has caused comment as it was introduced just before the King's Cup race of 1927. It is a single seater with unusual control configuration due to the cramped cockpit area.
Date:
October 1927
Partner:
UNT Libraries Government Documents Department
The C.A.M.S. 54 G.R. Transatlantic Seaplane (French)
Description:
Tested at the end of March, 1928, the C.A.M.S. 54 G.R. was built for the purpose of crossing the Atlantic from Europe by way of the azores. It has a biplane construction with wings mounted above the hull. It is powered by two new series 500 HP. geared Hispano Suiza V type engines.
Date:
September 1928
Creator:
Ide, John Jay
Partner:
UNT Libraries Government Documents Department
Contribution to the Technique of Landing Large Airships: Part 1
Description:
Many treatises in regard to construction of airship sheds are lacking in data on air currents, for which reason this phase of the problem will be here thoroughly discussed in connection with the accompanying photographs of currents.
Date:
May 1929
Creator:
Krell, O.
Partner:
UNT Libraries Government Documents Department
Lecture on Aerodynamics
Description:
This lecture deals with four main subjects: methods of studying air resistance, experimental aerodynamics, propellers and stability of airplanes.
Date:
September 1923
Creator:
Toussaint, A.
Partner:
UNT Libraries Government Documents Department
Atmospheric Waves and Their Utilization in Soaring Flight
Description:
In soaring flight, ascending air currents are utilized and the interesting question is raised whether there are such currents which extend to any considerable distance and which can be utilized practically.
Date:
March 1923
Creator:
Baldit, M. Albert
Partner:
UNT Libraries Government Documents Department
Drag Measurements on a Junkers Wing Section: Application of the Betz Method to the Results of Comparative Tests Made on a Model and on an Airplane in Flight
Description:
The comparison of model tests in flight can be based on the result of such measurements. They are very important from the aerodynamical point of view, as they lead to useful conclusions regarding the behavior of the wing, its best shape and the conformity of theoretical and actual flow. Although there still remains a certain prejudice against such measurements, I have still attempted to make these comparative tests in order to inspire confidence in their reliability.
Date:
September 1927
Creator:
Weidinger, Hanns
Partner:
UNT Libraries Government Documents Department
Some New Tests at the Gottingen Laboratory
Description:
The tests at the Gottingen laboratory included: friction tests on a surface treated with emaillite, verification tests on the M.V.A. 356 wing, and comparative tests of wing no. 36 at the Eiffel laboratory. The examination of all these experiments leads to the belief that, at large incidences, the speeds registered by the suction manometer of the testing chamber of the Eiffel laboratory wind tunnel are, owing to pressure drop, greater than the actual speeds. Therefore, the values of k(sub x) and…
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Date:
April 1921
Partner:
UNT Libraries Government Documents Department
Motion of Spheres in Still Fluids
Description:
"The behavior of a liquid or gaseous medium, in which a solid body can move freely under the action of a force of constant magnitude and direction, is yet little known. Only in connection with a few special problems, which belong in this field, have experiments been tried and these chiefly concern technically important cases. The behavior of the simplest shaped bodies has as yet been scarcely investigated at all" (p. 1).
Date:
April 1924
Creator:
Hirsch, P.
Partner:
UNT Libraries Government Documents Department
Contribution to the Design and Calculation of Fuel Cams and Fuel Valves for Diesel Engines
Description:
In this work I have attempted to find a basis for the design of fuel cams, which will serve equally for large and small engines, both high-speed and low-speed.
Date:
August 1928
Creator:
Basu, Jatrindra Nath
Partner:
UNT Libraries Government Documents Department
The new French high-speed wind tunnel
Description:
The plans for the wind tunnel at Issey-les-Moulineaux are discussed in relation to concerns about the Law of Similitude and propeller speed.
Date:
May 1923
Creator:
Robert
Partner:
UNT Libraries Government Documents Department
Aviation Engines in the Endurance Contest
Description:
The contest for engines of great endurance had entries of 13 types by the following firms: Breguet, Farman, Fiat, Hispano-Suiza, Lorraine-Dietrich, Panhard-Levassor, Peugeot, Renault, and Salmson.
Date:
December 1924
Creator:
Lehr, G.
Partner:
UNT Libraries Government Documents Department
Recent Developments in the Construction and Operation of All-Metal Airplanes
Description:
Experiments on the effect of atmosphere and of sea water on the building materials employed by us have been carried on for years in the North Sea with the aid of the Hamburg Naval Observatory. Parallel experiments are being made at the Pisa Naval Observatory in the Mediterranean Sea. Metal sheets, sections, assemblies and experimental floats are being exposed to the action of the elements. Different construction techniques are discussed and a variety of specific airplanes are presented which in…
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Date:
September 1926
Creator:
Dornier, C.
Partner:
UNT Libraries Government Documents Department
Combustion of Liquid Fuels in Diesel Engine
Description:
Hitherto, definite specifications have always been made for fuel oils and they have been classified as more or less good or non-utilizable. The present aim, however, is to build Diesel engines capable of using even the poorest liquid fuels and especially the waste products of the oil industry, without special chemical or physical preparation.
Date:
October 1924
Creator:
Alt, Otto
Partner:
UNT Libraries Government Documents Department
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.
Partner:
UNT Libraries Government Documents Department
Measuring Vibration and Torque With the Oscillograph
Description:
"The recent development of technical science demands maximum reliability of functioning, together with maximum utilization of construction materials. For this purpose we must know what stresses are produced during functioning. One cause of great stresses are mechanical vibrations and this report describes a method of using an oscilloscope to measure the stresses of rapidly changing phenomena" (p. 1).
Date:
December 1924
Creator:
Elsässer, R.
Partner:
UNT Libraries Government Documents Department
Contribution to the Systematic Investigation on Joukowsky Profiles
Description:
"This article resulted from the need of showing, in a simple way, how the aerodynamic properties of airfoils are affected by the shape of their profiles. No general solution of this problem could be found, since the profile shapes cannot ordinarily be expressed by simple mathematical formulas. This advantage is possessed only by the Joukowsky profiles and this discussion of the problem is therefore limited to them" (p. 1).
Date:
April 1928
Creator:
Loew, Gottfried
Partner:
UNT Libraries Government Documents Department
A Few More Mechanical-Flight Formulas Without the Aid of Polar Diagrams
Description:
The reliability of the assumption of a parabolic shape of the polar curve is investigated and found satisfactory for all practical purposes. It is further shown that the aerodynamically best possible or "ideal" airplane is produced on this assumption. Lastly, detailed suggestions are given on the possibilities of application of this method of calculation. It especially simplifies the design and evaluation of structural changes and the determination of the limits of technical possibilities. The …
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Date:
March 1928
Creator:
Schrenk, Martin
Partner:
UNT Libraries Government Documents Department
Atomization of Liquid Fuels Part 3: Critical Discussion of Experimental Reesults, Mixing the Atomized Fuel with Air
Description:
This report provides a critical discussion of the results of the experiments conducted in the previous NACA-TM's 329 and 330. The main object of this investigation was to determine the size of the drops in mechanical atomization.
Date:
September 1925
Creator:
Kuehn, R.
Partner:
UNT Libraries Government Documents Department
Kinetographic Determination of Airplane Flight Characteristics
Description:
The author's first experiments with a glider on flight characteristics demonstrated that an accurate flight-path measurement would enable determination of the polar diagram from a gliding flight. Since then he has endeavored to obtain accurate flight measurements by means of kinetograph (motion-picture camera). Different methods of accomplishing this are presented.
Date:
April 1927
Creator:
Raethjen, P.
Partner:
UNT Libraries Government Documents Department
Motive Power Required to Operate a Wind Tunnel
Description:
The use of exit cones and different blade configurations to reduce the motive power required in wind tunnels is discussed in this report.
Date:
September 1924
Creator:
Ziembinski, S.
Partner:
UNT Libraries Government Documents Department
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Annual Report of the Director of the Bureau of Standards
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