The design of the twin may very well be based on a K21. Certainly the forward fuselage looks to be exceedingly similar. But then they may have adapted the design to their own use.
The K21 has quite a (relatively) old wing on it. It is to all aerodynamic intents and purposes identical to the wings on my Bergfalke IV (ie the same airfoil at root and tip, the same washout, the same taper ratios, but not quite but very close aspect ratios). So it is 30 year old technology in the wing aerodynamics of the K21. (Alternatively it says how good the Bergfalke IV wings are!) A number of German Akafleig projects appear to have taken either the fuselage or wings of an existing aircraft and then putting alternatively new design wings or fuse on. As such there is no reason to say that the Iranians haven't designed new wings for a K21 fuse.... Regards, Anthony > From: "Derek Ruddock" <[EMAIL PROTECTED]> > > >If it's not a copy of a K21, then it's a remarkable example of convergent > >evolution... > > The look of nearly every glider since the Standard Cirrus is a remarkable > example of convergent evolution I would have thought. More importantly, the > things over which most design ingenuity and angst has been spent by every > glider manufacturer for thirty years - the aerofoil and the structure - are > pretty well invisible. > > Actually, with a side opening canopy, I would have thought more Twin Astir - > but then they all look the same to me. :) > > Graeme Cant > > > _________________________________________________________________ > Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp > > > -- > * You are subscribed to the aus-soaring mailing list. > * To Unsubscribe: send email to [EMAIL PROTECTED] > * with "unsubscribe aus-soaring" in the body of the message > * or with "help" in the body of the message for more information. > -- * You are subscribed to the aus-soaring mailing list. * To Unsubscribe: send email to [EMAIL PROTECTED] * with "unsubscribe aus-soaring" in the body of the message * or with "help" in the body of the message for more information.
