A special protractor was designed and built with a view towards supplying a simple, inexpensive, practical, portable instrument for making measurements to detect propeller warpage under practically all conditions, without the use of auxiliary equipment, and without having to remove the propeller from the airplane. A detailed description is given of the protractor. Techniques for measuring are described. Directions are given on how to use the protractor to set detachable blade-type propellers on an airplane.
Special Propeller Protractor
1928-01-01
Miscellaneous
No indication
English
SLUB | 1928
|Engineering Index Backfile | 1928
|NTRS | 1924
|NTRS | 1977
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