This website gives quite an interesting history of Kamov who have been
making co-axials for many years
http://avia.russian.ee/vertigo/peopl...v/index_2.html and are the makers
of this latest one.

On this latest single place the lower swashplate is visible in some photos
and it looks like the pitch arms for the upper rotor go down the center of
the main shaft.

Regards Peter


"Stuart & Kathryn Fields" wrote in message
...
Very interesting. I can't see any pitch control linkage to the blades.
Don't read Russian, but do they say anything about autorotation?

--
Stuart Fields
Experimental Helo magazine
P. O. Box 1585
Inyokern, CA 93527
(760) 377-4478
(760) 408-9747 general and layout cell
(760) 608-1299 technical and advertising cell

www.vkss.com
www.experimentalhelo.com


"Blue" wrote in message
u...
Interesting new co-axial from Russia. Not too much info yet as it is a
prototype. However all static and ground tests made, flying time only 12
hours. More info will be available after all tests. Check out these web
sites for info.

http://www.airtrikes.net/heli.jpg

http://delta.wtr.ru/wtboard/40671.shtml

www.clubrotor.ru