h a l f b a k e r y
The phrase 'crumpled heap' comes to mind.
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This rocket backpack has sensors that know exactly how far
are from the ground and what your upward and downward
When it senses you've jumped, the jets kick in and blast you to
preset height. At your apogee, zenith, nadir, pinnacle, apex,
crest, summit it starts to correct
for your downward plunge so
you don't die, hitting the ground just lightly enough to return
you to a readied crouch at which point you jump again.
||It's a good idea, but perhaps a little obvious given it's
level of parbakedness in popular fiction - from Heinlein's
starship troopers through to several current generation
||I think it would have merit if a) you proposed how to get
it to work, ie contrast against current jet pack
technology and show how this could be done, or b) come
up with a novel aspect to it, like powering it with a big
helium baloon (and tank, and compressor) that inflates to
lift you and then deflates/compresses the helium to
reduce lift. Or electrolysis water (in the air?) to produce
hydrogen for lift and then burns the hydrogen for thrust
||Because jetpacks are rather WKNTE, but workable
practical ones are WIBNI without a new fuel/technology.
||Ok, maybe a jetpack balloon hybrid. Just enough
balloon to cut the load to the rocket pack in half but
not so big that it imparts too much drag to the whole
||I think that's going to be a very large balloon.