Wiktionary
alt. (context aviation English) A piece of equipment that may be strapped to a person’s back and generate vertical thrust by a downward discharge of jet fluid, thereby rendering the person capable of flight. n. (context aviation English) A piece of equipment that may be strapped to a person’s back and generate vertical thrust by a downward discharge of jet fluid, thereby rendering the person capable of flight.
Wikipedia
upright=1.3|thumb|Rocket Belt pilot Dan Schlund at the 2005 Melbourne Show Jet pack, rocket belt, rocket pack and similar names are used for various types of devices, usually worn on the back, that are propelled by jets of escaping gases (or in some cases water) to let a single user propel him or herself into the air or fly.
The concept emerged from science fiction in the 1960s and became popular as the technology became a reality. The most common use of the jet pack has been in extra-vehicular activities for astronauts. Despite decades of advancement in the technology, many obstacles remain in the way of use of the jetpack in the military or as a means of personal transport, including the challenges of Earth's atmosphere, Earth's gravity, low energy density of available fuels, and the human body not being naturally adapted to fly. To compensate for the limitations of the human body, the jet pack must accommodate for all factors of flight such as lift and stabilization.
Usage examples of "jet pack".
It was he who had been shot out of the sky when he was using the jet pack.
One of them grazed my tether and snapped me forward, but I stopped myself with my jet pack and fired again at the warp engine.
His captor, with a jet pack on his suit, grabbed Jan by the arm and towed him over to the open airlock of the waiting ship.
A mark piece rented him a locker and he stowed his suit and jet pack inside, revealing himself as a scrawny giant with dark, curly hair and a mahogany tan confined strictly to his face and hands.
Smoky moved between ships with a jet pack in the small of his back.
The bounty hunter had used his suit and jet pack to literally blast himself through the Sarlacc, killing it in the process.
Once she had to nudge one of his legs away when he became inquisitive about the controls for her suit's jet pack, but only once.