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Airplane Flight in the Stratosphere
This brief survey of the problems encountered in high-altitude flight deals in particular with the need for high lift coefficient in the wings, large aspect ratios in the wings, and also the problem of hermetically sealing the cabin.
Date:
February 1932
Creator:
de Caria, Ugo
System:
The UNT Digital Library
Pressure Distribution on Fuselage of Airplane Model
Memorandum describing the method of determining the pressure distribution on the fuselage, with special attention to how it is affected by the presence of the wings.
Date:
February 1925
Creator:
unknown
System:
The UNT Digital Library
Graetzin Special Carburetor
Corresponding to practical requirements, this carburetor (especially the smaller sizes) may be regarded as the smallest form of a float carburetor and is adapted for use with all small engines, including auxiliary bicycle and similar engines.
Date:
February 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
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
Relation Between the Stability Characteristics and the Controllability of German Airplanes
This survey is intended to give a general approximate idea of the stability and controllability of German airplanes. Both flight characteristics, including the behavior of the airplane under the action of deflected controls and external disturbances, and flight performance, which refers to climbing, speed, take-off, and landing qualities.
Date:
February 1930
Creator:
Hübner, Walter
System:
The UNT Digital Library
Experimental Investigations Concerning the Limits of Detonation in Gaseous Mixtures: Part 1
Memorandum presenting an investigation to determine quantitatively the limits of detonation in gaseous mixtures for the conditions imposed and for a number of given gaseous explosive mixtures.
Date:
February 1930
Creator:
Wendlandt, Rudolf
System:
The UNT Digital Library
Fixed Air-Cooled Engines
"It is proposed to analyze the advantages and disadvantages of large fixed air-cooled radial engines and to explain how the problems have been solved by the Bristol Aeroplane Company" (p. 1).
Date:
February 1923
Creator:
Fedden, A. H.
System:
The UNT Digital Library
"Am" Gasoline Cock
The "AM" cock was designed specially for gasoline pipes on vehicles using internal combustion engines (airplanes, airships, automobiles, tractors, battle "tanks", boats, etc.). The report descirbes the functioning and construction of the device.
Date:
February 1923
Creator:
unknown
System:
The UNT Digital Library
Magnan Glider M-2
The construction of the Magnan glider, M-2, is presented which is designed to fly in so-called horizontal winds. Details of the wings, fuselage, tail surfaces, controls, landing gear, characteristics, operation, photographs, and drawings are provided.
Date:
February 1924
Creator:
Lesage, M. André
System:
The UNT Digital Library
The Use of Elektron Metal in Airplane Construction
Memorandum presenting an evaluation of elektron, which is the lightest of the light metals and is of particular interest for aircraft construction. Some of its chemical properties, particular alloys and wrought materials that can be made using elektron, and some of the potential ways in which the material might be used are provided.
Date:
February 1931
Creator:
de Ridder, E. I.
System:
The UNT Digital Library
The Aerodynamic Wind Vane and the Inherent Stability of Airplanes
Report discussing the design of the wind vane described rests on the following line of reasoning: An airplane, originally in equilibrium about its C.G. is assumed to be deflected from this position through an angle (delta)i, the variation (delta)i being so sudden that the path of the C.G. and the airplane speed do not change while it is taking place. The aerodynamic forces acting on the wings, tail surfaces, fuselage, etc., which, as a whole, exerted a zero moment (M(sub G) = 0) about the center of gravity at the instant of equilibrium, now exert a moment M(sub G) not equal to 0.
Date:
February 1931
Creator:
Lapresle, A.
System:
The UNT Digital Library
The Metal Construction of Airplanes - Its Advantages - Its Present State - Its Future
The use of duralumin by French airplane designers is presented, the results they have obtained, and their hopes for the future.
Date:
February 1926
Creator:
DeWoitine, M. E.
System:
The UNT Digital Library
Methods of experimentation with models and utilization of results
The present report treats the subject of testing small models in a wind tunnel and of the methods employed for rendering the results constant, accurate and comparable with one another. Detailed experimental results are given.
Date:
February 1924
Creator:
Robert
System:
The UNT Digital Library
Parachutes for Aircraft
Report covering some characteristics of parachutes for aircraft. In order to provide the essential data on air resistance, rapidity of opening, shock stresses in opening, etc., for subsequent use, we will first give a few test results.
Date:
February 1928
Creator:
Müller, Waldemar
System:
The UNT Digital Library
Technical Section of Aeronautics
The duties of the Technical Section are listed along with facilities for testing. Different categories of tests are discussed and some sample results included.
Date:
February 1923
Creator:
Lesage, André
System:
The UNT Digital Library
Researches on ailerons and especially on the test loads to which they should be subjected
Aileron calculations have hitherto given greatly differing results according to different authors. It seems to be the general opinion that it is only necessary to give the ailerons such dimensions that the airplane can maneuver well, that the stresses they must undergo are relatively small, and that they are strong enough if their framework is of the order of strength as the wings to which they are attached. This article will show that the problem is really quite complex and that it should receive more attention.
Date:
February 1927
Creator:
Sabatier, J.
System:
The UNT Digital Library
Longitudinal Balancing of Airplanes
The object of the present communication is to determine the best method for locating the center of lift of an airplane and to provide a method for making corrections. The method employed is very simple, being based on the positions given the elevator during flights at different speeds.
Date:
February 1923
Creator:
Eteve, Albert
System:
The UNT Digital Library
The high-speed tank of the Hamburg Shipbuilding Company
A description of the Hamburg tank and carriage is provided as well as a layout of the control station and generator room.
Date:
February 1934
Creator:
Kempf, G. & Sottorf, W.
System:
The UNT Digital Library
The Relation Between the Tensile Strength and the Hardness of Metals
This report presents methods determining the hardness and tensile strength of metals by showing the effect and dependence of the hardness numbers on the strain-hardening. Relations between the hardness numbers and the ordinary stress-strain diagrams and tensile strength are given. Procedures for finding the Brinell strength are also presented.
Date:
February 1930
Creator:
Schwarz, O.
System:
The UNT Digital Library
Specializing for Record-Breaking
This report seeks to determine what constitutes airplane performance and what line should be followed in seeking to break records if the designer is given a free hand. Some of the considerations for designers include the ratio of engine power to wing area, minor refinements, low wing loading, and duration.
Date:
February 1924
Creator:
Warner, Edward P.
System:
The UNT Digital Library
Soaring Without Rising Currents
Memorandum describing the main problem of soaring flight, which is that it is difficult to maintain altitude and to engage in indefinite continuation of flight without dependence on rising currents from any source. The best chance of success involves utilizing energy stored in the air when the wind speed is constantly and rapidly varying.
Date:
February 1923
Creator:
Warner, Edward P.
System:
The UNT Digital Library
Rules and Regulations of the 1922 Rhön Soaring Flight Contest
Rules, regulations, announcements and lists of personnel for the Rhön Soaring-Flight Contest are presented.
Date:
February 1923
Creator:
unknown
System:
The UNT Digital Library