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Temperature coefficient of the modulus of rigidity of aircraft instrument diaphragm and spring materials

Experimental data are presented on the variation of the modulus of rigidity in the temperature range -20 to +50 degrees C. of a number of metals which are of possible use for elastic elements for aircraft and other instruments. The methods of the torsional pendulum was used to determine the modulus of rigidity and its temperature coefficient for aluminum, duralumin, monel metal, brass, phosphor bronze, coin silver, nickel silver, three high carbon steels, and three alloy steels. It was observed… more

Date: March 7, 1930

Creator: Brombacher, W. G. & Melton, E. R.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

A method of flight measurement of spins

A method is described involving the use of recording turn meters and accelerometers and a sensitive altimeter, by means of which all of the physical quantities necessary for the complete determination of the flight path, motion, attitude, forces, and couples of a fully developed spin can be obtained in flight. Data are given for several spins of two training type airplanes which indicate that the accuracy of the results obtained with the method is satisfactory.

Date: October 7, 1930

Creator: Soulé, Hartley A. & Scudder, Nathan F.