Technical Report Archive & Image Library (TRAIL) - 548 Matching Results

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Buckling Tests of Light-Metal Tubes

Description: Report presenting an attempt to determine mathematically the buckling-strength curves of various centrally loaded light-metal tubes which exhibit conspicuous differences of behavior under compressive loads. For this purpose, Von Karman's method is used after adapting it to special conditions.
Date: August 1929
Creator: Schroeder, August
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Building a Full-Size Glider

Description: The building and flying of a glider is possible for anyone who can use a few basic tools. This report presents some plans and techniques for building your own glider.
Date: September 1927
Creator: Camm, F. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculating Thrust Distribution and Efficiency of Air Propellers

Description: I am now proposing a method for the preliminary approximate calculation of the thrust distribution and efficiency of air propellers under any operating conditions. Our task becomes the following, namely, to determine the speed relations and the forces developed on a section with a given direction and velocity of the air current, a problem which can be solved with the aid of the momentum theory.
Date: December 1927
Creator: Bienen, Theodor
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculation of Airplane Performances Without the Aid of Polar Diagrams

Description: For good profiles the profile-drag coefficient is almost constant in the whole range which comes into consideration for practical flight. This is manifest in the consideration of the Gottingen airfoil tests and is confirmed by the investigations of the writer (measurements of the profile drag during flight by the Betz method), concerning which a detailed report will soon be published. The following deductions proceed from this fact. The formulas developed on the assumptions of a constant profil… 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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Calculation of Combining Effects in the Structure of Airplane Wings: A Rational Basis for Estimating the Reduction in the Design Load on Wing Beams Due to the Influence of Ribs and Covering Toward Causing the Beams to Deflect Together

Description: This lecture concerns the combining effects in airplane wings so as to save some of the dead weight. Equations are provided in order to calculate some of the load characteristics and some of the effects to be considered.
Date: June 1926
Creator: Thalau, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculation of the hull and of the car-suspension systems of airships

Description: Differential and integral curves are presented and well as numerous calculations relating to hulls. Some of the calculations include those relating to hulls, those relating to the invariability of the shape of the hulls, and those relating to the suspension of the hull.
Date: October 1924
Creator: Verduzio, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculation of the Pressures on Aircraft Engine Bearings

Description: For aircraft engines the three principal operating conditions are idling speed, cruising speed, and diving with the engine stopped. In what follows, we will discuss a method which affords a good idea of the course of pressure for the above mentioned operating conditions. The pressures produced in the driving gear are of three kinds; namely, the pressure due to gases, the pressure due to the inertia of the rotating masses, and the pressure due to the inertia of the reciprocating masses.
Date: December 1929
Creator: Steigenberger, O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculation of Tubular Radiators of the Automobile Type

Description: "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 dimen… more
Date: January 1926
Creator: Richter, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculation of Wing Spars

Description: The author presents a comparison and combination of the numerical and geometrical determinations of the maximum M, when calculating the maximum bay moment.
Date: August 1921
Creator: Müller-Breslau, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculation of Wing Spars

Description: The author presents a comparison and combination of the numerical and geometrical determinations of the maximum M, when calculating the maximum bay moment.
Date: August 1921
Creator: Müller-Breslau, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculation of Wing Spars of Variable Cross-Section and Linear Load

Description: "The calculation of wing spars of constant cross-section and load has been thoroughly treated by a large number of authors. Such is not the case,however, regarding the calculation of wing spars whose section and linear load diminish toward the ends, as in wings of trapezoidal contour and decreasing section" (p. 1).
Date: March 1925
Creator: Kirste, Léon
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cantilever Wings for Modern Aircraft: Some Aspects of Cantilever Wing Construction with Special Reference to Weight and Torsional Stiffness

Description: In the foregoing remarks I have made an attempt to touch on some of the structural problems met with in cantilever wings, and dealt rather fully with a certain type of single-spar construction. The experimental test wing was a first attempt to demonstrate the principles of this departure from orthodox methods. The result was a wing both torsionally stiff and of light weight - lighter than a corresponding biplane construction.
Date: November 1929
Creator: Stieger, H. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Carburetion in Aviation Engines

Description: This report tries to solve the problem of supplying the engine cylinders with a mixture of fuel and air in the right ratio to obtain the greatest power from the engine with the least consumption of fuel.
Date: August 1923
Creator: Poincaré
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Cells of Giant Airplanes

Description: This report presents a discussion of the Rohrbach type of giant airplane. The problems considered are structural drag, wing loading and divided power plants.
Date: September 1928
Creator: Weyl, A. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Central Aerohydrodynamic Institute of Moscow, Russia

Description: The staff and construction of the Institute are described as well as a variety of experiments and researches being conducted there. The six sections of the laboratory are described, including the Section for Theoretical Researches, Section for Aerodynamic Researches, Windmill Section, Section for Engine-Propeller Groups, Section for Material Testing, and Section for Instrument Making. Special attention is given to the various wind tunnels and testing facilities present.
Date: November 1926
Creator: Margoulis, W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Change of 180 Degrees in the Direction of a Uniform Current of Air

Description: In the construction of aerodynamic tunnels, it is a very important matter to obtain a uniform current of air in the sections where measurements are to be made. The straight type ordinarily used for attaining a uniform current and generally recommended for use, has great defects. If we desire to avoid these defects, it is well to give the canals of the tunnel such a form that the current, after the change of direction of its asymptotes, approximates a uniform and rectilinear movement. But for th… more
Date: February 1926
Creator: Witoszynski, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Choice of Air Routes

Description: The author lists rules for the development and planning of air routes. He uses as examples India and Texas, as well as discussing the need for more landing fields.
Date: May 1922
Creator: Warner, Edward P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Choice of Profile for the Wings of an Airplane Part 1

Description: "The choice of the profile for the wings of an airplane is a problem which should be solved by a scientific method based on data obtained by systematic experimentation. The problem, in its present form, may be stated as follows: "To find a profile which has certain required aerodynamic characteristics and which encloses the spars, whose number, dimensions and separating distance are likewise determined by structural considerations." At present, the static test, corresponding to the case of acce… more
Date: June 1928
Creator: Toussaint, A. & Carafoli, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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