A case of two identical propellers (composite, hollow blade), only different diameters...
84"
T/O rpm = 2480
Climb rpm = 2260
Max Cruise rpm = 1800
Econ Cruise rpm = 1580
96"
T/O rpm = 2350
Climb rpm = 2260
Max Cruise rpm = 1620
Econ Cruise rpm = 1450
With the above numbers, which would be the better performer?
HP = 325 @ 5500rpm (2480 prop rpm)
lb ft torque = 290 @ 4500 rpm (2000 prop rpm)
gear ratio 2.21 - 1
Whirlwind 100-4-84 Prop
This is all the info I have. The 96" 4 blade prop (Whirlwind 100-4-96) is in the design phase now.
84"
T/O rpm = 2480
Climb rpm = 2260
Max Cruise rpm = 1800
Econ Cruise rpm = 1580
96"
T/O rpm = 2350
Climb rpm = 2260
Max Cruise rpm = 1620
Econ Cruise rpm = 1450
With the above numbers, which would be the better performer?
HP = 325 @ 5500rpm (2480 prop rpm)
lb ft torque = 290 @ 4500 rpm (2000 prop rpm)
gear ratio 2.21 - 1
Whirlwind 100-4-84 Prop
This is all the info I have. The 96" 4 blade prop (Whirlwind 100-4-96) is in the design phase now.
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