CLEARANCE: Above Top Secret
- Jun 3, 2011
- Reaction score
And they either need a runway or motor/tip-jets to run up the rotor.LowObservable said:An autogyro is actually the least crazy solution for urban VTOL, with few noisemakers, a reasonably efficient cruise mode and inherent power-off vertical recovery.
But there's one big issue - rotor diameter. You're going to need a lot of take-off-and-landing space to handle the traffic volume that the system needs to function economically, let alone make a dent in urban congestion. (I don't think any conceivable system will actually do the latter.)
Also, note that the optimum cruise speed is in the conventional autogyro range, rather than being much faster as Carter originally planned.