PPRuNe Forums - View Single Post - Supersonic Rotorcraft ...
View Single Post
Old 15th Jul 2005, 19:46
  #4 (permalink)  
Graviman
 
Join Date: Nov 2004
Location: Cambridgeshire, UK
Posts: 1,334
Likes: 0
Received 0 Likes on 0 Posts
"This concept is a potential candidate for the future of rotorcraft."

OK, but for reasons given i still prefer the intermeshing concept.


[Quote now edited out, but i felt the response still valid]
"Why put two people in an easy to fly craft that is intended for in-flight activities, when one person will do?"

For an advanced high speed rotorcraft, i would say that instruction would be essential. I suggest tandem since it offers little aerodynamic penalty (same frontal area), while allowing much increase in versatility.

"This concept could be applied to the UniCopter, in the distant future."

In an outboard advancing intermesher, if the retreating blade produces lift you get vortex slap against the advancing blade. Vortex slap is the principle noise source in a Chinook - and it is protty noisy. It is also the indicator of an uncordinated turn in a teetering head, rotor basically hitting its own vortex. Potentially fatigue issues could arise, if it was not considered in the design. Finally, canopy drumming also becomes a problem.

Mart

Last edited by Graviman; 16th Jul 2005 at 09:36.
Graviman is offline