The N.A.C.A. recording tachometer and angle of attack recorder

H. J. E. Reid
naca-tn-156
August, 1923


This note contains photos and descriptions of airplane flight apparatus for use in conjunction with a recording galvanometer. In measuring the angle of attack a variable resistance is used, being controlled by a vane in the airstream. Thus it is only necessary to measure the change of resistance.

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