The personal aircraft presented to everyone by DIY enthusiast Glenn Martin from Wisconsin, USA, is called the Martin JetPack. This aircraft is not the personal fire-breathing aircraft in our traditional imagination, but is powered by two huge motorcycle engines converted into fan propellers, using powerful reaction force to float people into the air. It is said that Glenns son used this thing to successfully fly 1.8 meters (6ft) off the ground and 15 meters (50ft) in 45 seconds, achieving a pretty good result. Gleen believes that the ideal flying altitude of JetPack is between 150 meters and 300 meters, and it can fly 48 kilometers in 30 minutes.
