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Jan19-10, 12:48 AM   #18
 
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X Prize Clean Aviation: $10 million


Quote by Cyrus View Post
No, i'm saying why would you power a fan, instead of a prop. Larger rotors are more efficient.
At what size aircraft operating at what altitude and for what distance? Why do highly efficient puddle-jumpers side with turboprops while highly efficient medium and long-haul aircraft side with turbofans?