"George Vranek" wrote:

helicopters. Please have a look at www.vranek.ch/diskrotor.htm and publish

The diskrotor/diskCopter has been discussed here before. The
conclusion was that it was impractical and probably impossible. When
flying forward, the normal helicopter disk plane has a negative pitch
angle relative to the ground. Putting a huge round airfoil up there
with a negative pitch angle would make you crash and not fly faster.
Not only that, but the disk "airfoil" would not really be a very good
airfoil with the same shape on both ends would it. If you disagree, I
suggest you build a model and fly it faster than 100 mph and see what
happens.

Dennis.


Dennis Hawkins
n4mwd AT amsat DOT org (humans know what to do)

"A RECESSION is when you know somebody who is out of work.
A DEPRESSION is when YOU are out of work.
A RECOVERY is when all the H-1B's are out of work."
To find out what an H-1B is and how they are putting
Americans out of work, visit the following web site
and click on the "Exporting America" CNN news video:
http://zazona.com/ShameH1B/MediaClips.htm