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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… more
Date: 1923
Creator: Hersey, M. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Congressional Medal of Honor, the Distinguished Service Cross, and the Distinguished Service Medal Issued by the War Department Since April 6, 1917 Up to and including General Orders, Number 126, War Department, November 11, 1919

Description: Book containing the names and deeds of the recipients of the Congressional Medal of Honor, the Distinguished Service Cross, and the Distinguished Service Medal awarded for actions during World War I. It includes information such as whether the award was posthumous, the person's rank, and their company (if applicable).
Date: 1920
Creator: United States. Adjutant-General's Office.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
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What Libraries Learned from the War.

Description: Pamphlet containing lessons learned by librarians during their service in World War I. Topics covered include how men were not influenced by books or libraries, that libraries must be organized, and that libraries could be used to foster the understanding of world problems.
Date: January 1922
Creator: Milam, Carl Hastings, 1884-1963
Item Type: Refine your search to only Pamphlet
Partner: UNT Libraries Government Documents Department

Purse

Description: Clutch style purse of size 18 beads in paisley pattern in shades of pink, blue, peach, black and opal white. Wide brass lift lock closure includes 5 shapes of size 16 beads with repeating patterns. Lined in cream colored satin with two pockets. Finger loop of same on back side of purse at top. Maker's label on inside of purse: "Made in France / Exclusively by / Florentine"
Date: 1920/1929
Creator: Florentine
Item Type: Refine your search to only Physical Object
Partner: UNT College of Visual Arts + Design
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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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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… more
Date: April 1921
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

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… more
Date: September 1926
Creator: Dornier, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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
Partner: UNT Libraries Government Documents Department
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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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

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 … more
Date: March 1928
Creator: Schrenk, Martin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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