View Full Version : X2 coaxial at 250 knots!!!
01-21-2007, 09:39 AM
She is supposed to fly this year!!! Could be good enough for us, even with a V8 or V10 Northstar engine!!!
01-21-2007, 04:43 PM
Update on the X2 (http://www.vtol.org/issues.html#sik)
And I'll borrow your picture, if I may. :yo:
01-22-2007, 06:58 AM
Dave, you could have a better pix if you take a snapshot inside the pdf file! (look at your ADOBE fonctionnalities); anyway, your are allowed to take what you want for your site!...
Are you ashamed to put the TOURINGCOPTER on your site?
For the X2, i am a little bit perplex about the controls when the aircraft will oscillate, in cruise, between the helicoptering and the gyrocoptering! a nightmare for the closed loops of the fly-by-wire computers!...The best could be to had a blown tail as i recommanded for the GYROCOAX!... I don't know if the tail is active!?...This device can handle all the commands, at least in cruise, and moreover, can deal with the torque of the prop...Unless Sikorsky will use two coaxial propellers!...In this case, this propulsion could deal with all the prop torques... (as i recommanded for a common gyrocopter!...) ;)
01-22-2007, 08:01 AM
This is nothing new Sikorsky did the same thing with the ABC compond helicopter in the 80's. My Uncle works for them and was one of the people assigned to work on it.
01-22-2007, 08:23 AM
There is no more new things under the sun...Only new combinations!!!... ;)
01-22-2007, 08:25 AM
This is true the abc seemed it would have been faster since it had two turbines pushing it.
01-22-2007, 11:32 AM
OK. This page links to your page. (http://www.unicopter.com/A014.html)
Give me the good stuff that you want on the Touringcopter page (http://www.unicopter.com/1543.html). http://www.unicopter.com/ThumbsUp.gif
01-22-2007, 01:01 PM
OK, Dave i'm gone a gather some stuff...
OK, Mike, you are right but to 250 knots, the prop is more efficient!...
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