X-Mozilla-Keys:                                                                                 
BTW for all you ducted fan fans.
The new geared P&W turbo fan is 10% more efficient in fuel
burn than the non-geared fan version. 
The box itself is 99% efficient.
The thrust went from about 23,000 pounds to 35,000 pounds
take off thrust. Same core engine.

Put a gear box on that rotary engine powered ducted fan
your  building!

Paul Lamar
 
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