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drrivah · 27 August 2008, 05:54 PM

Hi Joe:
I rescued a discard from our technical library "A treatise on Airscrews",
Whyrill E. Park (Lang Propellor Ltd), 1921, EP Dutton & Co, NewYork, that goes into significant detail on period thrust calculations and how, starting with engine power curves and airframe, a prop is designed, carved and tested.

I would be happy to send the formulas or some xeroxes if someone wants to automate it for the web.

To avoid looking like an idle scholar, attached are photos of a first shot at carving project, a scimitar I designed for my C85 engine specs (W72 GK 44). The curved face is in progress, and it is made for display, not airworthy (pine), but has been an interesting first experiment.

-pete

27 August 2008, 05:54 PM	#402 (permalink)
drrivah Scout Pilot Join Date: Dec 2005 Location: Virginia Posts: 492	Prop Design Protocol ca. 1921 Hi Joe: I rescued a discard from our technical library "A treatise on Airscrews", Whyrill E. Park (Lang Propellor Ltd), 1921, EP Dutton & Co, NewYork, that goes into significant detail on period thrust calculations and how, starting with engine power curves and airframe, a prop is designed, carved and tested. I would be happy to send the formulas or some xeroxes if someone wants to automate it for the web. To avoid looking like an idle scholar, attached are photos of a first shot at carving project, a scimitar I designed for my C85 engine specs (W72 GK 44). The curved face is in progress, and it is made for display, not airworthy (pine), but has been an interesting first experiment. -pete