Powered by twin AMT-USA AT-450 engines, the highly modified Alisport Silent-J is the only sailplane on the airshow circuit capable of performing a low-level, jet-powered airshow performance. Utilizing the exclusive retractable engine pylon, the Silent-J climbs to altitude without a tow plane. The performance begins with a spectacular exhibition of graceful sailplane aerobatics, choreographed to classical music, and featuring the world-famous Silent Wings smoke. When the original altitude is spent, most sailplanes must land. But not this sailplane! By simply adding power from the twin jet pylon, the graceful sailplane is quickly transformed into a true low-level aerobatics machine. Accompanied by an ever-quickening musical score, the Silent-J cavorts at ground level with loops, rolls, hammerheads and spins.