Originally Posted by
NutLoose
Stop the film when the prop is parallel to the viewer, there is no bending of the blade due to thrust, image shows what i mean but its a tractor view i.e pulling, not a pusher one as in the drone, same idea though, just reverse it..
Props make a mess of aluminium planes when they hit... The flanks of the flanker will be a bit worse for wear.
Re bending of props under load... the prop thrust per blade to cause out of plane bending its not that much, An extra is able to generate a high level of thrust, but relative to the radial load, it is going. to be fairly low, around 2.5% that's about a degree and poofteenth, however, the load ain't uniformly spread, the center of the distribution is around 0.8r, and the in plane load at that point is considerably lower, and the underlying modulus is lower still, but overall the bending is predominantly around 0.75r. Its not that big. Same for fan blades. but all bets are off when they go chomping bits of tin nearby.
Seems the EP3A now has a stable mate for outmanoeuvring soviets finest cookware.