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.
The first jet pack was developed in 1919 by the Russian inventor Aleksandr Fyodorovich Andreyev. The project was well regarded by Nikolai Rynin and technology historians Yu. V. Biryukov and S. V. Golotyuk. Later it was issued a patent but apparently was not built or tested. It was oxygen-and-methane-powered (likeliest a rocket) with wings each roughly 1 m (3 feet) long.
A jet pack (or jetpack) is a jet-powered or rocket-powered device, usually worn on the back, that allows a person to fly.
Jetpack or Jetpac may also refer to:
Jetpack is a platform game available as freeware, originally published as shareware by Software Creations in 1993. The object of the levels is to collect all of the green emeralds scattered around the level while avoiding obstacles and enemies. Once accomplished, a door opens which the player must go through in order to advance to the next level. There is a single player, and a local multiplayer mode. The multiplayer mode supports up to eight players, where players take turns on the same machine.
The player is aided in his quest by a jetpack and a phase shifter, which allows tunnelling through certain walls. The environments, which usually consist of mazes of bricks, also feature vines, gold, ladders, ice, boxes, pillars, and conveyor belts. Other obstacles include jagged rocks, force fields, teleport pads, and indestructible bricks. In order to keep his jetpack running, the player has to collect fuel, by means of single/double tanks or fuel grids.
The game includes a simple level editor. Numerous levels have been published on Adept Software's website. The registered game features 100 pre-built levels. The developers also released a hintbook containing screenshots and a short piece of advice for every level.
[Chorus:]
I will not bend
I will not bow
I will not break
I'll stand my ground
Won't be afraid
To sing out loud
To sing out loud
To sing out loud
The visions of what's involved
The tensions you must resolve
Distractions will just dissolve
YOU ARE NOT LIKE ME
He's encountered a setback,
He isn't down to let that
Keep him on the ground. Press that
Button- ignite the jetpack!
Launch pad shrink disappear
Past the brink the
Atmosphere's thinning and his
Plasma's tingly
Planes appear to be birds and
Birds appear to be bees and
He's hearing the words that
Occur to him for no reason
"What are you living your life for
What are you willing to die for
What do you believe to be the grain of truth you can provide for
This grand adventure?
Is it your plan to spend your
Days batted about by
These random events?
Are you fueled by another engine
Lighting a fire beneath?
Have you breathed and seen your breath in the winds
And have you reached that point?"
[Chorus]
You only get to see this
Earth one time it's
Axis tilt's it
Changes climates
Plates shift weights and
Continents drift and
Draft twisted fates and
Monstrous frictions
Fragmentations stress and
Aggravation
Depression and confusion and
Bad relations use your
Imagination elude their
Categorization
Whether the crowd gives boos or
Congratulations the blue's just
Something you move through toward the
Vast expanses of space on the
Universal infinite
Path to emancipation the
Gravity of the planet
Grips you but don't abandon
Ship you feel the pressures in
Side can you withstand it?
[Chorus]
The heights you'll reach the
Depths you'll delve to
Depends on the propulsion
System that propels you
Methods that compel you
Messages they sell you
Punishments they give you
For doing what they tell you
But we've got passion
They've got prisons
You've got the freedom to
Make a decision
Will you abandon
All your addictions
Take your stand and
Live your convictions
What've you got to lose what've
You been taught to chose
What're you so hot to prove with your
Beautiful socks and shoes
The costumes' frayed cloth covers
Skin like a shroud
Exhaust fumes fade off in the wind
Like a cloud