Want! Close enough to a personal jetcar

X2 triplex supercopter gets tail-drive hooked up • The Register

The normal problems suffered by helicopters attempting to beat 150 knots or so are avoided by the X2’s design. The issue of “retreating blade stall” – where the backward-spinning blade briefly becomes almost stationary in the air owing to the speed of the aircraft, so losing lift – isn’t a problem as there are forwardgoing blades on both sides at any moment. The problem of the forward-moving blade tips going supersonic is sidestepped by the use of variable speed rotors: most helicopters spin their blades at a steady rate, but the X2 can slow them down as speed increases, keeping the tips safely subsonic.

Previous efforts along X2 lines have been bedevilled by vibration issues and excessive weight, but Sikorsky believes that modern superstiff rotors, variable rotor speed and active vibration damping tech will squelch the shudder.

Except for the probable price tag and the control-system complexity and all that stuff, this thing seems very sweet. At 250 knots cruising speed (and the serious acceleration that a real prop provides) the radius of interesting things you can do with point-to-point aircraft expands substantially. Imagine commuting from Pittsburgh to Manhattan in the same time it currently takes from the posh connecticut suburbs.

Yeah, right.

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