[questions from a f/w flyer...]
Why didn't Kamov's rotors take off? (For want of a better pun).
Or didn't they really make it easier? With no torque effect, it just looks like one less complication in the horrendous stability madness that rotary flying appears to be
Oh, and whilst we're here, if the budget runaround Hiller had auto something-or-other, where it could hovver when flown by a couple of sandbags (see latest 'Pilot' mag), then why hasn't that kind of thing become common place, at least for basic trainers?