IFMU,
That's right, they haven't built it (reverse velocity rotor). The problems with speculating on these improvements is that they are improving on a problem that doesn't exist anymore, where symmetry is a perfection that must be chased, like unicorns and rainbow's ends.
Dave seeks a "balanced, symetrical" rotor as solution to handling issues that have been solved years ago without doing mechanical backflips - by installing a fly-by-wire control system. Chasing the ease of handling by adding whole rotors and mythical super-rigid rotors is a way to convert money into piles of scrap experimental helicopters. There is no designer on earth who would seek better handling by adding rotors and blades, not when good, cheap and powerful computers are available to solve that problem.
Following this logic, our cars should never have had anti-lock brakes (a fly-by-wire system) nor should we have had electronic fuel injection (another fly-by-wire system) we should have had mechanical systems with a boot full of critical parts instead.
Last edited by NickLappos; 2nd May 2005 at 06:18.