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Rules and Regulations of the 1923 Rhon Soaring-Flight Contest
Memorandum describing the rules and regulations of the 1923 Rhön Soaring-Flight Contest. The requirements of the aircraft, pilot and competitor requirements, and prizes are provided.
Date:
May 1923
Creator:
unknown
System:
The UNT Digital Library
Aeronautic Instruments
"The development of aeronautic instruments. Vibrations, rapid changes of the conditions of flight and of atmospheric conditions, influence of the air stream all call for particular design and construction of the individual instruments. This is shown by certain examples of individual instruments and of various classes of instruments for measuring pressure, change of altitude, temperature, velocity, inclination and turning or combinations of these" (p. 1).
Date:
February 1924
Creator:
Everling, E. & Koppe, H.
System:
The UNT Digital Library
Fire prevention on airplanes. Part 1
Various methods for preventing fires in airplanes are presented with most efforts centering around prevention of backfires, new engine and carburetor designs, as well as investigations on different types of fuels.
Date:
October 1929
Creator:
Sabatier, J.
System:
The UNT Digital Library
Aviation Spirit - Past, Present, and Future
The volatile fuel of the high-speed internal combustion engine has, in the past, consisted almost exclusively of the lighter distillates from crude petroleum. Alternative and supplementary fuels are discussed such as: tetraline, dekalin, alcohol, cyclo-hexenes.
Date:
September 1923
Creator:
Dunstan, A. E. & Thole, F. B.
System:
The UNT Digital Library
Aeromechanical Experimentation (Wind Tunnel Tests)
The following report endeavors to show that aeromechanical experimentation has become an important aid to theory. Experiments can be tried with separate parts of airplanes or with models of whole airplanes, with propellers, and with anything else that comes into contact with moving air.
Date:
April 1929
Creator:
Katzmayr, R.
System:
The UNT Digital Library
Remarks on Building of Low-Powered Airplanes
"If the low-powered airplane is to be used advantageously by private individuals, the most important consideration is a smaller fuel consumption and, hence, a lower engine power. From experiments with gliders, it appears entirely possible, by utilizing ascending winds (on the weather side of mountains and those generated by the heat of the sun) and by employing engine flight intermittently, as required to fly long distances over land" (p. 1).
Date:
January 1924
Creator:
Langsdorff, Werner v.
System:
The UNT Digital Library
Device for Measuring Sound in Airplane Engines
Memorandum describing a device, constructed according to the system of Gati, with which it is possible to measure the sound of an engine and test the effect of a silencer.
Date:
June 1924
Creator:
Robrovsky, T.
System:
The UNT Digital Library
Choice of Profile for the Wings of an Airplane Part 2
This report gives a general method for drawing airplane profiles. This method is useful, but it leads to a somewhat laborious drawing which becomes quite complicated when we take a transformation function having terms of a high degree.
Date:
June 1928
Creator:
Toussaint, A. & Carafoli, E.
System:
The UNT Digital Library
Rules and Regulations Governing the Fokker Soaring-Flight Contest Over Water or Level Land
Memorandum presenting the rules and regulations of the Fokker Soaring Flight Contest, which occurred over the water and over level land.
Date:
June 1923
Creator:
unknown
System:
The UNT Digital Library
Travel of the Center of Pressure of Airfoils Transversely to the Air Stream
The experiments here described were performed for the purpose of obtaining the essential facts concerning the distribution of the air force along the span. We did not follow, however, the time-consuming method of point-to-point measurements of the pressure distribution on the wing surfaces, but determined directly the moment of mean force about an axis passing through the middle of the span parallel to the direction of flight.
Date:
September 1929
Creator:
Katzmayr, Richard
System:
The UNT Digital Library
Crank Case Scavenging of Two-Stroke-Cycle Engines
This report presents the results of tests on two-stroke-cycle Diesel engines to determine the efficiency of the crank case scavenging pump. It was determined that efficiencies were between 95 and 100%.
Date:
June 1929
Creator:
List, Hans
System:
The UNT Digital Library
Spontaneous Combustion of Hydrogen
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
System:
The UNT Digital Library
Concrete Airship Sheds at Orly, France Part 2: Supporting Structure and Method of Moving, Mechanism for Moving the Centering, Apparatus for Handling the Materials, Remarks on Construction Details
This report deals mainly with the methods of construction employed when after the plan had been approved. The foundation, side walls, doors and roof are all discussed and the economic savings resulting from this method of construction.
Date:
October 1925
Creator:
Freyssinet
System:
The UNT Digital Library
The laboratories of the Technical Section of Aeronautics (Service Technique de L'Aeronautique or S.T.Ae.)
An historical sketch of the laboratories of the Technical Section is provided. A breakdown of the different departments and their specialties is also listed.
Date:
February 1923
Creator:
Robert
System:
The UNT Digital Library
"AM" Flexible Metal Joint
A flexible metal joint used for connecting fuel lines is investigated and methods for assembly are included.
Date:
February 1923
Creator:
unknown
System:
The UNT Digital Library
The Protection of Duralumin From Corrosion
Different types of coatings to protect duralumin from corrosion are discussed. Plating, etching, brushing, coloring, painting and varnishing are all investigated.
Date:
March 1927
Creator:
Nelson, William
System:
The UNT Digital Library
The vector ruling protractor
The theory, structure and working of a vector slide rule is presented in this report. This instrument is used for determining a vector in magnitude and position when given its components and its moment about a point in their plane.
Date:
March 1924
Creator:
Zahm, A. F.
System:
The UNT Digital Library
Concrete Airship Sheds at Orly, France Part 1: General Aspect of the Problem, Basic Principles of the Final Project, Principal Structural Elements
This report details the contest to design and build concrete airship hangers. The difficulty lies in the magnitude of the absolute dimensions. An airship shed must withstand two principal types of stresses: those resulting from its own weight and those due to the wind. This report discusses both problems in detail.
Date:
October 1925
Creator:
Freyssinet
System:
The UNT Digital Library
Report on Commercial Air Transportation Activities in England, France, Germany and Holland
The following pages present a review of the air transportation activities of England, France, Germany and Holland, based on an inspection trip during the summer of 1924. The different components described include operating companies, nature of transportation services, air traffic, flying equipment, government relations, and general remarks.
Date:
June 1925
Creator:
Van Zandt, J. Parker
System:
The UNT Digital Library
Wood Versus Metal in Airplane Construction
The aim of this article is to present, in broad outline, a scientific method for solving the problem, "Wood or Metal." It will be shown that structural methods have by no means reached their final perfection. The strength of the different materials is discussed as well as different construction methods.
Date:
June 1923
Creator:
Seehase, H.
System:
The UNT Digital Library
Tests on Duralumin Columns for Aircraft Construction
The following paper is based on the results of tests, upon duralumin columns, contained in two theses presented to the Department of Civil and Sanitary Engineering of the Massachusetts Institute of Technology.
Date:
November 1924
Creator:
Lee, John G.
System:
The UNT Digital Library
Force Measurements on Airplanes
The most essential phenomena of aircraft should be classified according to their origin and then measured. Information can thus be obtained in a quicker, cheaper, and more reliable way than otherwise would be possible.
Date:
June 1929
Creator:
Seewald, F.
System:
The UNT Digital Library
Technical report of the 1928 Rhon soaring-flight contest
Report presenting some information on the gliders that participated in the 1928 Rhön soaring flight contest. Almost all of the gliders represented an improvement over gliders used in the previous years. A great increase in the skill of the glider pilots is also noted.
Date:
May 1929
Creator:
Lippisch, A.
System:
The UNT Digital Library
Lautal as a Material for Airplane Construction
Lautal is a refinable aluminum alloy which, unlike duralumin, contains no magnesium. According to the statements of the Lauta Works, lautal contains: aluminum, 94%; copper, 4%; silicon, 2%. The use of lautal as a construction material is discussed in relation to specific weight, production methods, and riveting tests.
Date:
August 1929
Creator:
Brenner, Paul
System:
The UNT Digital Library