The F.1 Kitten is a rocket and jet propelled aircraft. It has so much power in 2 rocket jet engines it can climb in a 90 degree angle until the engines don't even have power. Its not that fast of a jet in a straight line with just jet engines but with rocket engines it can reach speeds of 1000 mph+. For jet engines go at 15% throttle and for rocket engines go 100% throttle. For carrier takeoff don't touch the controls until you reach 120 mph in rocket mode then throttle down to jet mode for cruising. PS VTOL up to extend air brakes for landing or maneuvers. PS PS this plane was made for a little kitten I saw when I was waiting for my bus.