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Accurate Calculation of Multispar Cantilever and Semicantilever Wings With Parallel Webs Under Direct and Indirect Loading

Description: In the present report the computation is actually carried through for the case of parallel spars of equal resistance in bending without direct loading, including plotting of the influence lines; for other cases the method of calculation is explained. The development of large size airplanes can be speeded up by accurate methods of calculation such as this.
Date: March 1932
Creator: Sänger, Eugen
Partner: UNT Libraries Government Documents Department
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The C.A.M.S. 80 Amphibian (French): An Observation Monoplane

Description: Circular presenting a description of the C.A.M.S. 80, which is a shipboard or observation patrol, light-bombing, long-range amphibian. Details of the hull, landing gear, wing, tail surfaces, power plant, front cockpit, pilot's compartment, photographer's compartment, radio cabinet, rear gunner's cockpit, stern compartment, and flying qualities are provided.
Date: March 1932
Partner: UNT Libraries Government Documents Department
open access

The Compressive Strength of Duralumin Columns of Equal Angle Section

Description: "This report presents a chart giving the compressive strength of duralumin columns of equal angle section. The data used in the construction of the chart were obtained from various published sources and were correlated with theory in the range where secondary failure occurred. Appendices are included giving excerpts from Army and Navy specifications for duralumin and approximate formulas for the properties of the equal angle section" (p. 1).
Date: March 1932
Creator: Lundquist, Eugene E.
Partner: UNT Libraries Government Documents Department
open access

The Dreieck I Tailless Airplane (German): A Low-Wing Cantilever Monoplane

Description: Circular presenting a description of the Dreieck I tailless airplane, which has been shown to have excellent flying qualities. Information regarding the design and flight characteristics are provided.
Date: March 1932
Creator: Heinze, Edwin P. A.
Partner: UNT Libraries Government Documents Department
open access

Experiments on the distribution of fuel in fuel sprays

Description: The distribution of the fuel in sprays for compression-ignition engines was investigated by taking high-speed spark photographs of fuel sprays produced under a wide variety of conditions, and also by injecting them against pieces of Plasticine. A photographic study was made of sprays injected into evacuated chambers, into the atmosphere, into compressed air, and into transparent liquids. Pairs of identical sprays were injected counter to each other and their behavior analyzed. Small high-veloci… more
Date: March 1932
Creator: Lee, Dana W.
Partner: UNT Libraries Government Documents Department
open access

Experiments with planing surfaces

Description: Experiments with planing surfaces are fundamental, hydrodynamic researches for the purpose of obtaining the most favorable forms for planing boats, flying boats, and seaplane floats, with respect to water resistance and seaworthiness.
Date: March 1932
Creator: Sottorf, W.
Partner: UNT Libraries Government Documents Department
open access

German Aircraft Accident Statistics, 1930

Description: 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
Partner: UNT Libraries Government Documents Department
open access

Problems Concerning the Stability and Maneuverability of Airplanes

Description: "The stability of an airplane can be easily determined by wind-tunnel tests, especially by simple tests with models mounted wind-vane fashion. However, each stability curve plotted by this method is valid only for a certain setting of the corresponding control surface, i.e., it characterizes the stability of the airplane with the control stick in a given position. The problems thus defined are studied from the point of view of longitudinal and transverse stability. Directional stability is not … more
Date: March 1932
Creator: Biche, Jean
Partner: UNT Libraries Government Documents Department
open access

Rapid Chemical Test for the Identification of Chromium-Molybdenum Steel

Description: This note describes a simple, rapid, qualitative test which can be applied to solutions of drilling or chips for the identification of chromium-molybdenum steel. The test is based on the orange-red compound which is formed when thiocyanate and inequivalent molybdenum react. This test is much more reliable than the potassium ethylxanthate test which has been recommended for a like purpose. A list of the apparatus and reagents which are required, and a description of the procedure follows.
Date: March 1932
Creator: Redmond, John C.
Partner: UNT Libraries Government Documents Department
open access

Statistics of the Bureau Veritas

Description: "Statistics are indispensable factors for the amelioration of safety. Through the reconciliation of accidents which may appear isolated to interested parties, they permit tracking of typical causes of accidents; conversely, they can prevent, after a serious accident due to some fortuitous cause, the taking of incautious measures under the pressure of public opinion, which always inclines to gauge the gravity of the causes by that of the results. Lastly, they permit appraisal of the efficacy of … more
Date: March 1932
Creator: Volmerange, André
Partner: UNT Libraries Government Documents Department
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