United States. National Advisory Committee for Aeronautics

H. Julian Allen

M. J. Queijo

Richard R. Heldenfels

Antonio Ferri

Neal Tetervin

Leonard Sternfield

Doris Cohen

Kenneth L. Goin

Paul Seide

By M.J. Queijo and Walter D. Wolhart

Experimental Investigation of the Effect of Vertical-tail Size and Length and of Fuselage Shape and Length on the Static Lateral Stability Characteristics of a Model with 45 ̊sweptback Wing and Tail Surfaces

William M. Roberts

Thermal stresses induced in a flat, rectangular, 75S-T6 aluminum-alloy plate by nonuniform heating are determined both experimentally and theoretically. The characteristics of commercially available bonded resistance wire strain gages are first investigated to determine their suitability for measuring stresses under simple conditions of stress and temperature. The gages are then used to measure thermal stresses in the flat plate in order to study their suitability under more complicated conditions. The experimental results are found to be in satisfactory agreement (within plus or minus 5 percent of maximum calculated stress) with an approximate theoretical solution of the problem.

Experimental and Theoretical Determination of Thermal Stresses in a Flat Plate

George W. Zender

Charles Libove

A method is presented for the approximate calculation of the stresses and distortions in a box beam representing the main structural component of a swept wing with a carry-through section and with bulkheads perpendicular to the spars. The application of the method is illustrated by a numerical example and its results are compared with previously published test data.

Stress and Distortion Analysis of a Swept Box Beam Having Bulkheads Perpendicular to the Spars

Richard R. Heldenfels

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