asteroza + helicopter + semihot   1

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Looks like a semi-hot cycle helicopter, but instead of a potentially more complicated tip jet drive, it appears to use dual contra rotating direct drive turbines to spin the rotors, exhausting into the inter-disk area of the rotor hub. That exhaust choice is a bit odd though, but it might increase local air velocity over the blades.
rotor  direct  helicopter  aerospace  cycle  technology  turbine  semihot  coaxial  aviation  drive  hot  VTOL  Delicious 
june 2013 by asteroza

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