The interesting bit I found was that the rockets were only to supplement a regular engine for high power ops or to extend auto range. The idea must be redundant with turbine engines with high power to weight but still its an interesting concept. Im not sure hydrogen peroxide would be the safest in an accident or under fire….
Doesn’t the Rotordyne use the jet thrusters as the primary thrust?
Your friend certainly must have been very brave to fly a one bladed helicopter Nick, and with a new propulsion system!