Propeller wood fatique
Propeller wood fatique
(OP)
Twenty years ago I read that there was no mechanical stress fatique in wooden propellers.
Present information now says that there is fatique in wood propellers
Could someone comment on this change in the laws of physics.
Present information now says that there is fatique in wood propellers
Could someone comment on this change in the laws of physics.





RE: Propeller wood fatique
Mart
RE: Propeller wood fatique
Consider a notch in the blade, and what would happen if it was left too long. Wood is fantastically resistant to this kind of fatigue - to my knowledge, most woods don't allow crack propagation unless the load is very close to failure.
Wood is sensitive to bearing stresses, and of course, to moisture.
You could look through ANC-18, which is a detailed document about the design of wooden structures.
Steven Fahey, CET
"Simplicate, and add more lightness" - Bill Stout
RE: Propeller wood fatique
You should download it from internet.