Hi Old Fella,
VC9 and Tyne turbo props was similar.
"Take Off Power" was called when we had 15,250 N1 rpm and an indication of 430 psi on an engine "torque meter" (no idea about the pivot radius, nor the piston area to obtain the correct dimensions).
It didn't matter if the aircraft was stationary or not - it still produced that amount of power to accelerate the air mass backwards and with some relative velocity. (Mass * Acceleration * relative Velocity)
Last edited by rudderrudderrat; 28th Mar 2012 at 15:40.
Reason: still can't spell