N.A.C.A. Technical Memorandum No. 519 Fit ;s.lf 8. Propeller thrust is tronsmitted by the stof/'onary meosurrng Ctrum to the engine shaft and thus to the airptone Piston longifudi- n oily movable - noi rotatoble Engine shaft ~\ Measuring /i oui a To mortofnetcr Propeller blade Pig.l… … Pig*8 Torqu*-measuring hub. 13034- *.S
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