2006-10-11 01:15:14 · 5 answers · asked by Deonndre21 2 in Science & Mathematics ➔ Other - Science
What do you mean never caught on? I ride my jetpack to work everyday - in the cloud city.
But seriously: they cost too much and they're dangerous. Although they look cool, I would recommend buying a motorcycle if you want that dangerous look to pick up girls. Even the military passed on them because helicopters were just a lot more practical.
"In the world are now no more than 5 successfully flying rocket packs. For forty and more years from the day of the first flight of Harold Graham only eleven people (including him) have flown one, due to the lethal factor on the pack in free-air conditions (without the safety leash)."
2006-10-11 01:28:34 · answer #1 · answered by fortonmi 2 · 0⤊ 0⤋
It would be huge to have a enough fuel in it to be able to fly more than 30 seconds. It wasn't very effictive at using the fuel either. Now there are prototypes with blades instead of Jets.
2006-10-11 10:15:33 · answer #2 · answered by D@nny boy 2 · 0⤊ 0⤋
Because it's technically nearly impossible. Watch the Mythbusters jet-pack episode to get an idea how tricky it is.
2006-10-11 08:22:48 · answer #3 · answered by poorcocoboiboi 6 · 0⤊ 0⤋
Short duration. Very hard to steer. Dangerous. Insurance companies won't touch it.
2006-10-11 08:24:42 · answer #4 · answered by Anonymous · 0⤊ 0⤋
the most you can stay airborne is under 20 seconds
2006-10-11 08:22:38 · answer #5 · answered by aldo 6 · 0⤊ 0⤋