Flight Safety,
Thanks again for your earlier ideas.
You said; ~
"the flaps .... could even be cycled opened and closed during each rotorblade revolution to apply drag (and torque) where desired."
This idea is particularly attractive to the intermeshing configuration. It's masts are at an angle from the vertical. Therefore, the activation of a rotor air-brake will result in a yaw-pitch cross-coupling, which will cause the nose of the craft to rise.
By having a tip air-brake provide thrust as well as drag, your cyclic idea can provide sufficient lift at the back of the disk to offset the nose up, caused by the rotor's yawing of the craft.
Mechanically, the linkage for this fits perfectly into Shawn's Offset Teetering Hinge.
