Is a rocket an aeroplane?
Jet engines must have outside oxygen from the air. Another difference is that jet planes have wings for lift and rockets do not. The density of air and the speed of the plane affect the lift on the wings. For rockets the lift (thrust) is provided solely by the expelled gases. A rocket-powered aircraft or rocket plane is an aircraft that uses a rocket engine for propulsion, sometimes in addition to airbreathing jet engines.
Is rocket faster than jet?
Rocket planes can achieve much higher speeds than similarly sized jet aircraft, but typically for at most a few minutes of powered operation, followed by a gliding flight. Unhindered by the need for oxygen from the atmosphere, they are suitable for very high-altitude flight. A rocket travels fast, very fast. At an escape velocity of 40 000 km/h or 25 000 mph, it is faster than a high-velocity rifle bullet and faster than any fighter aircraft on the planet.