View Single Post
Old 07-08-2009, 01:27 PM   #28 (permalink)
SixtyDriver
Registered Users
 
Posts: 264
 

Join Date: Dec 2006
Default

Haven't seen this mentioned but thought it worth mentioning, on full size helicopters the main rotor blades are twisted so the tips are -10 or more degrees to minimize tip vortex, even the lift load across the span of the blade and improve handling during hover. If you could get the theorectical -10 pitch you would be at -20+ degrees at the tip (or +20 inverted) which would do very, bad things.
__________________
Skids are for kids!

TREX 250 SE
TREX 500 ESP
Boeing AH-64D
SixtyDriver is offline        Reply With Quote