In article . com, Sport Pilot wrote:
They make turbine jet engines for model airplanes now. I even recall
someone attaching a ring gear to the impeller and making a turbo prop
out of it. So a turbo prop C 150 would not be impossible.

Someone made a turbojet powered Cri-Cri (a single seat aircraft normally
powered by two small two-stroke engines on small pylons off the nose).
The cheapest twinjet time in the world!

--
Dylan Smith, Castletown, Isle of Man
Flying: http://www.dylansmith.net
Frontier Elite Universe: http://www.alioth.net
"Maintain thine airspeed, lest the ground come up and smite thee"