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The Testing of Balloon Fabrics

Description: Report describes methods and materials used in waterproofing and fireproofing airplane fabrics using dopes. The determination of the probable life of a balloon fabric in service by experimental means is of great value in choosing the most suitable fabrics for a given purpose and in pointing the way to improvements in compounding and construction. The usefulness of exposure to the weather for this purpose has been amply demonstrated.
Date: 1920
Creator: Edwards, Junius David & Moore, Irwin L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Glider Construction and Design

Description: The endeavor to draw a strict line between gliders and soarers as been recently abandoned and the following classification adopted: 1) gliders controlled by shifting the weight of the body; 2) gliders controlled by rudders; 3) gliders controlled by wings. The different classes are discussed as well as materials and parts used in construction.
Date: October 1927
Creator: Gymnich, Alfried
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigation of the Effect of the Fuselage on the Wing of a Low-Wing Monoplane

Description: Memorandum presenting the mutual action of wing and fuselage, which greatly affects the construction of airplanes. A description of systematic wind-tunnel tests that were made to answer that question is provided. Other tests deal with the transition from fuselage to wing root, which, if inadequate on low-wing monoplanes, may become dangerous by causing the air flow to separate at the wing root.
Date: June 1929
Creator: Muttray, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Pack Method for Compressive Tests of Thin Specimens of Materials Used in Thin-Wall Structures

Description: "The strength of modern lightweight thin-wall structures is generally limited by the strength of the compression members. An adequate design of these members requires a knowledge of the compressive stress-strain graph of the thin-wall material. The "pack" method was developed at the National Bureau of Standards with the support of the National Advisory Committee for Aeronautics to make possible a determination of compressive stress-strain graphs for such material" (p. 133).
Date: August 23, 1938
Creator: Aitchison, C. S. & Tuckerman, L. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Emergency Measures for Increasing the Range of Fighter Airplanes

Description: "An analysis was made to show the relative effectiveness of streamline external fuel tanks, a fuel tank in the form of a wing mounted in a biplane position, and auxiliary wing panels attached at the wing tips to increase the span as temporary means for increasing the range of a fighter-type airplane. Figures and charts for the various devices considered show the results of calculations of range, duration of flight, and take-off distance for both land-base and carrier operation. The results indi… more
Date: May 1943
Creator: Jones, Robert T. & Wetmore, Joseph W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Kiln Drying of Wood for Airplanes

Description: This report is descriptive of various methods used in the kiln drying of woods for airplanes and gives the results of physical tests on different types of woods after being dried by the various kiln-drying methods.
Date: 1919
Creator: Tiemann, Harry D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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"Gloster" Metal Construction

Description: This report details the methods of construction employed by the Gloster Company in their fabrication of metal aircraft parts. Ribs, spars, wings, and metal treatments to prevent oxidation are all discussed.
Date: June 1930
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comparative Tests of the Strength and Tightness of Commercial Flush Rivets of One Type and NACA Flush Rivets in Machine-Countersunk and Counterpunched Joints

Description: Report discusses an investigation that was conducted to compare the strength and tightness of machine-countersunk flush-riveted joints assembled with NACA flush rivets and a type of commercial flush rivet. A comparison was also generated between the strength and tightness of counterpunched flush-riveted joints assembled with the same types of rivet. NACA's flush-riveted joints tended to be stronger and tighter than the commercial joints.
Date: February 1, 1944
Creator: Mandel, Merven W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An Investigation of the Effects of Atmospheric Corrosion on the Fatigue Life of Aluminum Alloys

Description: "Fatigue tests were conducted on 100 vibrating cantilever sheet specimens by applying 4,000 cycles of load in a 10-minute period each working day while the specimens were subjected to atmospheric conditions over a period of several months. Specimens of 2024-T3 and 7075-T6 aluminum alloys in both the bare and clad forms were tested. For comparison, 96 specimens were tested indoors" (p. 1).
Date: September 1958
Creator: Leybold, Herbert A.; Hardrath, Herbert F. & Moore, Robert L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of an Interface on Transient Temperature Distribution in Composite Aircraft Joints

Description: Note presenting testing of geometrically related structural joints representing typical skin-stringer cross sections under radiant heating to simulate the effects of aerodynamic heating. The presence of an interface was found to have a significant effect on the temperature distribution in all geometries tested and thus must be considered in temperature calculations. Interface conductance values were computed for each of the 15 fabricated specimens.
Date: April 1957
Creator: Barzelay, Martin E. & Holloway, George F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of Variables in Welding Technique on the Strength of Direct-Current Metal-Arc-Welded Joints in Aircraft Steel 1 - Static Tension and Bending Fatigue Tests of Joints in SAE 4130 Steel Sheet

Description: Report presenting testing of arc-welded butt joints in a 1/8-inch SAE 4130 steel sheet of aircraft quality under various conditions of welding and heat treatment in order to evaluate the effects of specific welding-technique factors on the strength of the joints. Results regarding static tension tests and fatigue tests are provided.
Date: July 1947
Creator: Voldrich, C. B. & Armstrong, E. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Wing With a Pointed Tip

Description: In airplane construction generally one finds an almost exclusive use of wing tips that are practically square end but occasionally those with large rounded tips. For use as a cantilever wing, however, a wing with pointed tips may contain valuable aerodynamic advantages.
Date: October 1922
Creator: v. Prondzynski, Stephan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Large-Deflection Theory of Curved Sheet

Description: Equations are given for the elastic behavior of initially curved sheets in which the deflections are not small in comparison with the thickness, but at the same time small enough to justify the use of simplified formulas for curvature. These equations are solved for the case of a sheet with circular cylindrical shape simply supported along two edges parallel to the axis of the generating cylinder. Numerical results are given for three values of the curvature and for three ratios of buckle lengt… more
Date: May 1943
Creator: Levy, Samuel
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Bearing tests of magnesium-alloy sheet

Description: From Summary: "Bearing tests of AM-3S, AM-52S, and AM-C57S magnesium-alloy sheet in various thicknesses and tempers were made. Bearing yield and ultimate strengths were determined and compared for various edge distances and for various ratios of loading-pin diameter to sheet thickness. Tensile strengths were determined and ratios of average bearing yield and ultimate strength to tensile strength are given."
Date: June 1943
Creator: Sharp, W. H. & Moore, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Air Resistance Measurements on Actual Airplane Parts

Description: "For the calculation of the parasite resistance of an airplane, a knowledge of the resistance of the individual structural and accessory parts is necessary. The most reliable basis for this is given by tests with actual airplane parts at airspeeds which occur in practice. The data given here relate to the landing gear of a Siemanms-Schuckert DI airplane; the landing gear of a 'Luftfahrzeug-Gesellschaft' airplane (type Roland Dlla); landing gear of a 'Flugzeugbau Friedrichshafen' G airplane; a m… more
Date: November 1923
Creator: Weiselsberger, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Experimental Investigation of Misaligning Couples and Eccentricity at Ends of Misaligned Plain Bearings

Description: Note presenting an experimental investigation to study the behavior of full journal bearings under steady load when acted upon by a steady misaligning couple. Displacements of the ends of the journal axis relative to the bearing axis were measured with either an axial couple applied in the plane of the central load or a twisting couple in the plane normal to the central load. Results regarding the phenomena at zero central load, misaligned attitude, Sommerfeld number and capacity number, load r… more
Date: February 1955
Creator: DuBois, G. B.; Ocvirk, F. W. & Wehe, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Some Strength Tests of Stiffened Curved Sheets Loaded in Shear

Description: Report discusses the results of strength tests of several curved-sheet 24S-T aluminum alloy specimens stiffened longitudinally and transversely and loaded in shear. Curved-web beams and cylindrical shells were both examined in the tests. Results provided include the load at which the sheet began to show shear buckles, where the buckles occurred, and whether or not the failures involved rupture of the sheet.
Date: April 1944
Creator: Chiarito, Patrick T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Column and plate compressive strengths of aircraft structural materials: 17S-T aluminum-alloy sheet

Description: From Summary: "Column and plate compressive strengths of 17S-T aluminum-alloy sheet were determined both within and beyond the elastic range from tests of thin-strip columns and from local-instability tests of formed Z- and channel-section columns. These tests are part of an extensive research investigation to provide data on the structural strengths of various aircraft materials. Results are presented in the form of curves and charts that may be used in the design and analysis of aircraft stru… more
Date: June 1945
Creator: Heimerl, George J. & Roy, J. Albert
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigation of Methods of Supporting Single-Thickness Specimens in a Fixture for Determination of Compressive Stress-Strain Curves

Description: "An investigation was made of the methods of supporting single-thickness specimens of aluminum-alloy sheet material in a fixture for determination of compressive stress-strain curves. The specimens were supported in the fixture by rollers, offset-grooved plates, opposite-grooved plates, flat brass plates, or flat wooden plates. The investigation also showed that the compression fixture, the specimen support, and the single-thickness specimens must be accurately made in order to obtain accurate … more
Date: May 1945
Creator: Kotanchik, Joseph N.; Woods, Walter & Weinberger, Robert A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Material Properties of Two Types of Plastic-Bonded Glass Cloth

Description: Report discusses the results of tensile and compressive tests of two types of plastic-bonded glass cloth and their potential use in aircraft construction. The ultimate tensile stress and compressive yield stresses for the different materials are provided.
Date: December 1944
Creator: Rafel, Norman & Schuette, Evan H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Column and plate compressive strengths of aircraft structural materials: extruded 24S-T aluminum alloy

Description: Report presenting column and plate compressive strengths of extruded 24S-T aluminum alloy determined both within and beyond the elastic range from tests of thin-strip columns and local-instability tests of H-, Z-, and channel-section columns. The tests are part of a research investigation to provide data on the structural strength of various aircraft materials. Results regarding compressive stress-strain curves and column and plate compressive strengths are provided.
Date: July 1945
Creator: Heimerl, George J. & Roy, J. Albert
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Column and plate compressive strengths of aircraft structural materials: extruded 75S-T aluminum alloy

Description: Report presenting column and plate compressive strengths of extruded 75S-T aluminum alloy both within and beyond the elastic range from tests of thin-strip columns and local-instability tests of H-, Z-, and channel-section columns. The tests are part of an extensive research investigation to provide data on the structural strength of various aircraft materials. Results regarding compressive stress-strain curves and column and plate compressive strengths are provided.
Date: July 1945
Creator: Heimerl, George J. & Roy, J. Albert
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Weldability of High-Tensile Steels From Experience in Airplane Construction, With Special Reference to Welding Crack Susceptibility

Description: "The concept of welding crack tendency is explained and illustrated with practical examples. All pertinent causes are enumerated, and experimental measures are given through which the secondary effects can be removed and the principal causes analyzed: 1) welding stresses; and 2) material defects. The variations in length and stresses incident to welding a small bar as free weld, with restrained elongation and restrained elongation and contraction, are explored in three fundamental experiments" … more
Date: November 1935
Creator: Müller, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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