Originally Posted by flying-llama
Auto gyros have a form of pitch and roll control (like a helicopter's cyclic control) known as 'direct control' (DC).
This involves using servos to directly tilt the rotor relative to the auto gyro's body and looks like a thrust vectoring unit tilted 90 degrees upward.
The very same mechanism (vector unit used vertically) was used by Ryan to test fly Rogallo wings: http://books.google.com.my/books?id=...page&q&f=false
It would be interesting to build a scale model of the Ryan testbed. Most RC models of Rogallo wings use a conventional rudder to steer. We can probably come up with a vector unit strong enough to be used for weight shifting.
(I would also like to take this opportunity to thank whoever it was at Google who secured the rights to scan and archive old issues of Popular Mechanics and allow us to read them for free)