Resource Type
Serial/Series Title
Month
1,438 Matching Results
Results open in a new window/tab.
Analysis of flight and wind-tunnel tests on Udet airplanes with reference to spinning characteristics
This report presents an analysis of results of wind-tunnel tests conducted at the D.V.L. Values were determined for the effectiveness of all the controls at various angles of attack. The autorotation was studied by subjecting the rotating model to an air blast.
Date:
March 1929
Creator:
Herrmann, H.
Object Type:
Report
System:
The UNT Digital Library
Schütte-Lanz Airship Projects After the War
The stressing of an airship depends on three nonuniformly distributed forces: air forces; the distribution of acceleration forces; and how the air pressure is distributed on the hull. This report examines the stresses and comes to conclusions on the size of airships.
Date:
October 1925
Creator:
Weiss, Georg
Object Type:
Report
System:
The UNT Digital Library
German Aircraft Accident Statistics, 1930
The investigation of all serious accidents, involving technical defects in the airplane or engine, is undertaken by the D.V.L. in conjunction with the imperial traffic minister and other interested parties. All accidents not clearly explained in the reports are subsequently cleared up.
Date:
March 1932
Creator:
Weitzmann, Ludwig
Object Type:
Report
System:
The UNT Digital Library
Nieuport-Astra Parachute Contest
Report presenting a description of a parachute design contest. The object of this contest was to obtain a parachute of light weight and small bulk, suitable for airplanes. The primary areas of focus were safety, ability to be installed on airplanes, speed, materials, and behavior of the parachutes in the air.
Date:
October 1923
Creator:
Philippe, J.
Object Type:
Report
System:
The UNT Digital Library
Possibility of Profitable Air Traffic Between Lisbon and Rio De Janeiro
Different aspects of an airship line between Lisbon and Rio de Janeiro are presented. Some of the factors discussed are: the number of passengers, fuel consumption, design, itinerary, airports, flight times, and income.
Date:
November 1923
Creator:
Sherz, Walter
Object Type:
Report
System:
The UNT Digital Library
On the Definition of the Standard Atmosphere
"On April 15, 1920, the under Secretary of State for Aeronautics and Aerial Transport decided to adopt as Standard Atmosphere for official airplane tests in France, the atmosphere defined by the following law, known as the Law of the S.T.You.(Technical Section of Aeronautics): From 0 to 11,000 m. - 0=15-0.0065 Z and above 11,000 m. - 0= -56.5 degrees being the temperature in centigrade degrees at altitude Z expressed in meters. For altitude 0 the pressure is 760 mm of mercury. In the magazine "L'Aeronautique" Mr. A. Toussaint has already written at length on the first studies which led to the elaboration of this law. Since that time the results obtained have been confirmed by fuller and more abundant data which have justified the official adoption of the Law of the S.T.Ae" (p. 1).
Date:
April 1921
Creator:
Grimault, P.
Object Type:
Report
System:
The UNT Digital Library
Optico-Photographic Measurements of Airplane Deformations
"The deformation of aircraft wings is measured by photographically recording a series of bright shots on a moving paper band sensitive to light. Alternating deformations, especially vibrations, can thus be measured in operation, unaffected by inertia. A handy recording camera, the optograph, was developed by the static division of the D.V.L. (German Experimental Institute for Aeronautics) for the employment of this method of measurement on airplanes in flight" (p. 1).
Date:
March 1931
Creator:
Küssner, Hans Georg
Object Type:
Report
System:
The UNT Digital Library
The Belgian Aerotechnical Laboratory at Rhode-Saint-Genèse
This report describes the layout of the laboratory along with the motor and balance for the wind tunnel.
Date:
September 1926
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Dangerous Sideslip of a Stalled Airplane and Its Prevention
This investigation covers only that phase of airplane accidents which are the result of sideslip. We examine the circumstances under which this occurs, study the behavior of present-day airplane types (monoplane, conventional and staggered biplane) therein and endeavor to find a solution whereby this danger may be avoided.
Date:
September 1931
Creator:
Fuchs, Richard & Schmidt, Wilhelm
Object Type:
Report
System:
The UNT Digital Library
Air Transport
Report presenting the development in air transport that has taken place since civil aviation between England and Europe started at the end of August 1919. The primary subjects explored include the character of loads on aircraft, routes operated, results in passengers carried and efficiency of the service, costs of the service, question of subsidies, and probable future developments.
Date:
1924
Creator:
Page, F. Handley
Object Type:
Report
System:
The UNT Digital Library
Determination of Resistance and Trimming Moment of Planing Water Craft
This report presents a new theory which makes it possible to interpret the resistance and the trimming moment for any loading of a planing aircraft when these values are given for one load. This application of the new theory forms the basis of the present paper. Derivations of various conversion formulas are given as well as numerous examples.
Date:
May 1931
Creator:
Schröder, P.
Object Type:
Report
System:
The UNT Digital Library
Calculation of Tubular Radiators of the Automobile Type
"We propose to show how to calculate the cooling capacity of all radiators through which the air flows in separate streamlets, whether enclosed in actual tubes or not and whatever cross-sectional shape the tubes may have. The first part will give the fundamental principles for calculating velocity of air in the tubes and the heat exchange by radiation, conduction and convection, and show, by examples, the agreement of the calculation with experiments. In the second part, the effect of the dimensions and conditions of operation on the heat exchange will be systematically investigated" (p. 1).
Date:
January 1926
Creator:
Richter, L.
Object Type:
Report
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.
Object Type:
Report
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
Object Type:
Report
System:
The UNT Digital Library
The Electrodynamometric Balance of the Small Wind Tunnel of the French Service of Aeronautical Research
This investigation shows the attempt to improve the electrodynamomoter designed by Mr. Villey. The force to be measured acts on a flexible steel plate which is placed in front of a fixed plate. The deformation varies the original thickness of the layer of air between the two plates, thus causing a more rapid variation in the coefficient of electrostatic attraction of the two plates than in the capacity of the condenser formed by the dynamometer.
Date:
March 1930
Creator:
Rebuffet, P.
Object Type:
Report
System:
The UNT Digital Library
A Study of Curvilinear Flight
"When an airplane describes a curve it takes a certain time for it to turn from level to inclined position and then back to level again. In the following, we express the motion about the horizontal axis as "roll" or "bank" and the motion perpendicular to the vertical axis, i.e., the actual curve, as "turn." Equations and tables provide results on various aspects of turns, control settings, acceleration, inertia moments, and angular velocity" (p. 2).
Date:
April 1931
Creator:
Kruse, Helmuth
Object Type:
Report
System:
The UNT Digital Library
Suggestions for Courses of Instruction in Aviation
Suggestions are presented for the establishment of lecture courses on aviation. An outline of some courses that have previously been given is provided.
Date:
March 1925
Creator:
Poeschel
Object Type:
Report
System:
The UNT Digital Library
Experiments on the Resistance of Airplane Wheels and Radiators
Experiments were made on the resistance of four airplane wheels of different sizes and coverings and two Lamblin radiators. The results show the important influence of the wheel coverings. The closing of a shutter, which was fitted to one of the radiators, considerably lessened the resistance.
Date:
July 1924
Creator:
unknown
Object Type:
Report
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
Object Type:
Report
System:
The UNT Digital Library
Investigation of Certain Wing Shapes With Sections Varying Progressively Along the Span
This investigation has a double object: 1) the calculation of the general characteristics of certain wings with progressively varying sections; 2) the determination of data furnishing, in certain cases, some information on the actual distribution of the external forces acting on a wing. We shall try to show certain advantages belonging to the few wing types of variable section which we shall study and that, even if the general aerodynamic coefficients of these wings are not often clearly superior to those of certain wings of uniform section, the wings of variable section nevertheless have certain advantages over those of uniform section in the distribution of the attainable stresses.
Date:
April 1931
Creator:
Arsandaux, L.
Object Type:
Report
System:
The UNT Digital Library
Metal Construction Development Part 1: General, Strip Metal Construction - Fuselage
Memorandum presenting a general overview of aircraft constructed from metal and fuselages constructed from strip metal.
Date:
August 1929
Creator:
Pollard, H. J.
Object Type:
Report
System:
The UNT Digital Library
Structural Details of the Giant Dornier Seaplane "Do X."
Memorandum presenting a description of the Dornier seaplane Do X. Details of the general description, materials, details of the main wing and upper wing, details of the hull and of the wing stubs, tail surfaces and control lines, power plant, and launching car and floating dock are provided.
Date:
January 1930
Creator:
Gustosa, Corrado
Object Type:
Report
System:
The UNT Digital Library
Balanced and Servo Control Surfaces
"Many reports on various control systems are available, but the results cannot be generally applied since the effect of particular changes of surface-form and mounting are subject to variations depending upon airfoil section and influences of airplane layout. This report presents a simple analysis of several control systems in more general use. Elevators, ailerons, and rudders are all discussed" (p. 1).
Date:
May 1930
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Torsional Vibration of Aircraft Engines
"Exhaustive torsional-vibration investigations are required to determine the reliability of aircraft engines. A general outline of the methods used for such investigations and of the theoretical and mechanical means now available for this purpose is given, illustrated by example. True vibration diagrams are usually obtained from vibration measurements on the completed engine. Two devices for this purpose and supplementing each other, the D.V.L. torsiograph and the D.V.L. torsion recorder, are described in this report" (p. 1).
Date:
May 1932
Creator:
Lürenbaum, Karl
Object Type:
Report
System:
The UNT Digital Library