"Dave S" wrote in message
nk.net...
Wouldn't you have this "effect" ANY time you went from a thrusting to a
braking action with regards to thrust generated?

If I pulled power back, set the pitch to flat, and pushed the nose over,
wouldn't the prop be "driving" the engine in the manner you describe?

All of this is able to be done without a specific Beta range.

Dave

Actually, no. Kinda. g

When the engine is using HP to turn the prop, all is well, be it forward or
reverse thrust. The only difference the gearing sees is the thrust on the
shaft goes from pulling the shaft out, to pushing the shaft in, but the load
on the gears is the same. (all for tractor applications, in this case)

When the possible chattering comes in, is when you are gliding, and at a
very low power setting, and the *windmilling* prop is trying to turn the
engine, thus the prop is "making" HP to try to turn the engine- opposite
from normal.
--
Jim in NC