This interesting turbine model of a remarkable size measures more than two feet in length (+ 60cm).

"Ball X-J-E-20"

-It has all basic turbine components except the fuel injection system. The engine uses a coiled up copper pipe as a preheater and at the end of it, in the last coil, it has six orifice through which fuel flows into the annular combustion chamber.
-It delivers 10 lbs of thrust at 26,000 rpm.