This guy takes modeling over the top.
Actually has 8 "real turbines" at about $1500 each! Took
over 2 years to build. It has a wing span of about 22 feet. Takes
multiple pilots, as there are so many things to control. Think they
were nervous during the maidenflight? Unbelievable that someone would
make this - all real turbines! Check out the movie link below to see the
first flight.
http://www.mcgirt.net/RC/VIDEOS/Giant_B52/B52_flight2.wmv