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 Decade: 1940-1949
 Year: 1943
 Collection: National Advisory Committee for Aeronautics Collection
Critical shear stress of an infinitely long flat plate with equal elastic restraints against rotation along the parallel edges

Critical shear stress of an infinitely long flat plate with equal elastic restraints against rotation along the parallel edges

Date: November 1, 1943
Creator: Stowell, Elbridge Z
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Critical stress for an infinitely long flat plate with elastically restrained edges under combined shear and direct stress

Critical stress for an infinitely long flat plate with elastically restrained edges under combined shear and direct stress

Date: November 1, 1943
Creator: Schwartz, Edward B
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Critical stresses for plates

Critical stresses for plates

Date: October 1, 1943
Creator: Schuette, Evan H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Data on buckling strength of curved sheet in compression

Data on buckling strength of curved sheet in compression

Date: October 1, 1943
Creator: Levin, L Ross
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Derivation of charts for determining the horizontal tail load variation with any elevator motion

Derivation of charts for determining the horizontal tail load variation with any elevator motion

Date: January 1, 1943
Creator: Pearson, Henry A
Description: The equations relating the wing and tail loads are derived for a unit elevator displacement. These equations are then converted into a nondimensional form and charts are given by which the wing- and tail-load-increment variation may be determined under dynamic conditions for any type of elevator motion and for various degrees of airplane stability. In order to illustrate the use of the charts, several examples are included in which the wing and tail loads are evaluated for a number of types of elevator motion. Methods are given for determining the necessary derivatives from results of wind-tunnel tests when such tests are available.
Contributing Partner: UNT Libraries Government Documents Department
Derivation of charts for determining the horizontal tail load variation with any elevator motion

Derivation of charts for determining the horizontal tail load variation with any elevator motion

Date: January 1, 1943
Creator: Pearson, Henry A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Description of stress-strain curves by three parameters

Description of stress-strain curves by three parameters

Date: July 1, 1943
Creator: Ramberg, Walter
Description: A simple formula is suggested for describing the stress-strain curve in terms of three parameters; namely, Young's modulus and two secant yield strengths. Dimensionless charts are derived from this formula for determining the stress-strain curve, the tangent modulus, and the reduced modulus of a material for which these three parameters are given. Comparison with the tensile and compressive data on aluminum-alloy, stainless-steel, and carbon-steel sheet in NACA Technical Note No. 840 indicates that the formula is adequate for most of these materials. The formula does not describe the behavior of alclad sheet, which shows a marked change in slope at low stress. It seems probable that more than three parameters will be necessary to represent such stress-strain curves adequately.
Contributing Partner: UNT Libraries Government Documents Department
Design criterions for the dimensions of the forebody of a long-range flying boat

Design criterions for the dimensions of the forebody of a long-range flying boat

Date: November 1, 1943
Creator: Parkinson, John B
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Design, selection, and installation of aircraft heat exchangers

Design, selection, and installation of aircraft heat exchangers

Date: July 1, 1943
Creator: Brevoort, Maurice J
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Determination of Flight Paths of an SBD-1 Airplane in Simulated Diving Attacks, Special Report

Determination of Flight Paths of an SBD-1 Airplane in Simulated Diving Attacks, Special Report

Date: March 1, 1943
Creator: Johnson, Harold I.
Description: An investigation has been made to determine the motions of and the flight paths describe by a Navy dive-bombing airplane in simulated diving attacks. The data necessary to evaluate these items, with the exception of the atmospheric wind data, were obtained from automatic recording instruments installed entirely within the airplane. The atmospheric wind data were obtained from the ground by the balloon-theodolite method. The results of typical dives at various dive angles are presented in the form of time histories of the motion of the airplane as well as flight paths calculated with respect to still air and with respect to the ground.
Contributing Partner: UNT Libraries Government Documents Department