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 Decade: 1940-1949
 Year: 1943
 Collection: National Advisory Committee for Aeronautics Collection
Analysis of the High-Altitude Cooling of the Ranger SGV-770 D-4 Engine in the Bell XP-77 Airplane

Analysis of the High-Altitude Cooling of the Ranger SGV-770 D-4 Engine in the Bell XP-77 Airplane

Date: October 1, 1943
Creator: Nielsen, Jack N.
Description: No abstract available.
Contributing Partner: UNT Libraries Government Documents Department
Tensile and compressive tests of magnesium alloy J-1 sheet

Tensile and compressive tests of magnesium alloy J-1 sheet

Date: December 1, 1943
Creator: Aitchison, C S
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The Stability of Isotropic or Orthotopic Cylinders or Flat or Curved Panels, Between and Across Stiffeners, with Any Edge Conditions Between Hinged and Fixed, Under Any Combination of Compression and Shear

The Stability of Isotropic or Orthotopic Cylinders or Flat or Curved Panels, Between and Across Stiffeners, with Any Edge Conditions Between Hinged and Fixed, Under Any Combination of Compression and Shear

Date: December 1, 1943
Creator: Donnell, L H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The effect of the type of specimen on the shear strengths of driven rivets

The effect of the type of specimen on the shear strengths of driven rivets

Date: November 1, 1943
Creator: Sharp, W H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Certain mechanical strength properties of aluminum alloys 25S-T and X76S-T

Certain mechanical strength properties of aluminum alloys 25S-T and X76S-T

Date: October 1, 1943
Creator: Dolan, Thomas J
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Bearing tests of magnesium-alloy sheet

Bearing tests of magnesium-alloy sheet

Date: June 1, 1943
Creator: Sharp, W H
Description: 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. The results of the tests indicated that ultimate bearing strengths increased with edge distances up to 1.5 to 2 times the diameter of the loading pin; that ultimate bearing strengths are a function of the ratio of pin diameter to sheet thickness; and that these properties are effected only slightly by increases in edge distance greater than 1.5 diameters.
Contributing Partner: UNT Libraries Government Documents Department
Effect of rivet pitch upon the fatigue strength of single-row riveted joints of 0.025- to 0.025-inch 24S-T alclad

Effect of rivet pitch upon the fatigue strength of single-row riveted joints of 0.025- to 0.025-inch 24S-T alclad

Date: July 1, 1943
Creator: Seliger, Victor
Description: S-N curves at the range ratio of 0.2 were experimentally obtained for each of the following values of rivet pitch P as used in a single-row lap joint of 0.025- to 0.025-inch 24S-T alclad with one-eight AN430 round-head rivets: p=0.5, 0.75, 1.0, 1.5. Families of constant rivet pitch curves, which define the fatigue life for specimens studied, were developed. Curves showing the variation of the effective stress concentration factor in fatigue with rivet pitch and maximum load per rivet were also established.
Contributing Partner: UNT Libraries Government Documents Department
Effects of prior fatigue-stressing of the impact resistance of chromium-molybdenum aircraft steel

Effects of prior fatigue-stressing of the impact resistance of chromium-molybdenum aircraft steel

Date: March 1, 1943
Creator: Kies, J A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A method for determining the column curve from tests of columns with equal restraints against rotation on the ends

A method for determining the column curve from tests of columns with equal restraints against rotation on the ends

Date: August 1, 1943
Creator: Lundquist, Eugene E
Description: The results are presented of a theoretical study for the determination of the column curve from tests of column specimens having ends equally restrained against rotation. The theory of this problem is studied and a curve is shown relating the fixity coefficient c to the critical load, the length of the column, and the magnitude of the elastic restraint. A method of using this curve for the determination of the column curve for columns with pin ends from tests of columns with elastically restrained ends is presented. The results of the method as applied to a series of tests on thin-strip columns of stainless steel are also given.
Contributing Partner: UNT Libraries Government Documents Department
Tests of aluminum-alloy stiffened-sheet specimens cut from an airplane wing

Tests of aluminum-alloy stiffened-sheet specimens cut from an airplane wing

Date: January 1, 1943
Creator: Holt, Marshall
Description: The specimens used in the present tests were cut from an actual airplane wing of the stressed-skin type. The specimens thus obtained were not representative of the usual type of laboratory specimens because the stiffeners were not exactly parallel nor evenly spaced and, in one case, the skin consisted of pieces of sheet of different thicknesses. The test data obtained indicate that the buckling strain of stiffened curved sheet can be computed with reasonable accuracy by the equation given by Wenzek. The ultimate loads of the specimens when tested as flat sheet were within +/-11 percent of the product of the compressive yield strength and the cross-sectional area of the stiffeners. A rivet spacing equal to 98 times the sheet thickness was a source of weakness, and rivet spacings up to 36 times the sheet thickness appeared satisfactory.
Contributing Partner: UNT Libraries Government Documents Department
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