Martin Hollmann

Rotorcraft Of The 1980’s

Vertical landings and takeoffs still lure homebuilders to the field Experimental helicopters, gyroplanes, vertical takeoff machines and other rotorcraft have been going on nearly as



The Story Of The Bumble Bee Gyrocopter

In 1982, the production of light, two stroke engines for snow-mobiles allowed aircraft enthusiasts to build light aircraft called ultralights. These two stroke engines usually