> It is gradual. In fact, if you think about it, it has to be. A > propeller that presented the same AoA at every point along the blade > would have to change its degree of twist as the advance ratio changed.
I was just wondering whether the twist happened to correspond to the AOA-plus-advance so that large fractions of the blade would stall all in one go ... which would certainly be disconcerting to a governor. > I didn't mean to imply that YASim is actually modelling the airflow > around the propeller; it doesn't. What it does do is try to mimick an > "idealized" propeller torque and efficiency curves (functions of the > advance ratio). These have a "kink" at some point -- they don't > continue to increase as the advance ratio drops to zero, because the > blades reach an AoA of maximum lift. Is the kink blunt, like the one for a main wing with twist in it, or is the kink sharp enough to be really conspicuous ? _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
