It seems that all of these "jet packs" are actually "rocket packs". I wonder if a system that actually used small air-breathing turbo-jets might prove more practical.
I remember walking home from school as a little 'un, hitting this big hill and was sure when I thought to myself "don't worry, by high school I'll have a rocket pack and won't have to climb this every day". Still waiting fellas.
The jetpack has some severe limits that writers can ignore but engineers can't.
Noise is a severe problem. And no one knows how to reduce it by much. Jet, not rocket, engines had some success but you still don't want to be around them.
Jetpacks are very difficult to control. The fliers were trained in tethers for safety and were very careful in demonstrations.
Today computers could help with the control problem but only slightly. The weight distribution is simply unstable.
The packs could have been used on the moon where there is low gravity and no noise. The gas pollution would have been trivial.
Thumbs up for the Jetpack!
ReplyDeleteSee, they just led us on for decades. I grew up sure I'd be getting around town regularly with a jet pack. And dammit, I still want one!
ReplyDeleteIt seems that all of these "jet packs" are actually "rocket packs". I wonder if a system that actually used small air-breathing turbo-jets might prove more practical.
ReplyDeleteFunny how the technology for jetpacks has basically gone no further than the pack that they demonstrated then in '64.
ReplyDeleteI remember walking home from school as a little 'un, hitting this big hill and was sure when I thought to myself "don't worry, by high school I'll have a rocket pack and won't have to climb this every day". Still waiting fellas.
ReplyDeleteThe jetpack has some severe limits that writers can ignore but engineers can't.
ReplyDeleteNoise is a severe problem. And no one knows how to reduce it by much. Jet, not rocket, engines had some success but you still don't want to be around them.
Jetpacks are very difficult to control. The fliers were trained in tethers for safety and were very careful in demonstrations.
Today computers could help with the control problem but only slightly. The weight distribution is simply unstable.
The packs could have been used on the moon where there is low gravity and no noise. The gas pollution would have been trivial.
This guy seems to have made some progress with micro-turbines. Video of tethered flight:
ReplyDeletehttp://www.youtube.com/watch?v=4lcMHfJoY_M