The original Hawk 4 used a piston engine, but a turbine was found to be more effective.
-
The Hawk 4 is a gyroplane. -
The Hawk 4 is powered by a 420 shp Rolls-Royce Model 250 series gas turbine... -
The turbine powered Hawk 4's first experimental flight was on 7 July 2000. -
The original Hawk 4 used a piston engine, but a turbine was found to be more...
