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Can anyone explain the differences between a turboprop and piston propellor?

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KC135DELTA

Well-Known Member
Joined
Aug 1, 2006
Messages
112
Hello again,

After searching high and low I can't find an answer to this. A 400hp turboprop engine and a 400hp piston engine seem to have vastly different props. Why is this? Does a turboprop have a higher output shaft speed? Torque differences? Problems with a fully feathering prop on a piston engine?

400hp piston:
LancairIV-PC-GLFP02.jpg


400hp turboprop:
extra_ea_500_b.jpg


Are they really that different? Comments?
 
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