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Old 07-28-2010 | 08:44 PM
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nonstoprc
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Default RE: Propeller Torque and Hub Drilling


ORIGINAL: pe reivers

No,
You do however need a different dataset in order to calculate the required clamping force.

Engine torque data curve during a complete power cycle.
engine rpm and rpm (angle velocity) fluctuations during a cycle. (engine/prop inertia)
prop inertia and mass
prop aerodynamic torque
prop to engine friction coefficient
prop to engine mean friction surface diameter.
safety factor

sounds very complicated with this set.

Manufacture of props for full-scale airplane do publish prop bolt torque specs. How do they come with the numbers?