Cheers Guys,
There are many good points raised, some of which I barely grasp, I will endeavour to further my understanding. However from the replies I can see that this is an interesting subject.
I am considering a final year project investigating the aerodynamics of inverted flight and inverted helo flight.
If I have any problems I now know where to come for answers!
As to the question Why bother?
No idea, I just thought why has it not been done, is it possible?
Question: If this helo was built, would you fly it???????????
Thanks for the replies,
Twin