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I thought we all knew that jetpacks are a thing - is there still some mystery I'm not aware of?
by soared 6y ago
I thought we all knew that jetpacks are a thing - is there still some mystery I'm not aware of?
- eli 6y ago"A guy flying out over the ocean in a jet pack at around 3,000 feet, especially one without any lifting surfaces, is a puzzling proposition, to say the least. Jet packs that do exist have very short ranges and are not equipped to be flying in dense airspace, especially thousands of feet in the air. "
- DennisP 6y agoMaybe a jet pack with a large fuel tank in the shape of a human would be able to pull it off.
- trhway 6y agothat seems to be a jet turbine pack which can be 15-20 minutes of flying at 60mph+ - enough to get several miles into the ocean.
- bigbubba 6y agoWith no lifting surfaces?
- trhway 6y agovery napkin as we don't know how good their engines are. For small and thus low efficient jet engines - with exhaust velocity of anywhere between 500-1000m/s and with the 1:50 fuel/air ratio one has to burn 40-80g/s to get 200kg thrust. Thus a 1000s of flight takes 40-80kg of fuel.
- saalweachter 6y ago> ... and are not equipped to be flying in dense airspace, especially thousands of feet in the air. Isn't this just saying that you have no way to avoid being hit by an airplane, no transponder, maybe no radio, no flightpath, and are breaking about a million laws by doing so? (I mean, doesn't address the "short range" problem, but "idiocy" seems sufficient to overcome all the rest.)
- musingsole 6y agoMystery 1) Who is the unregistered flyer? Mystery 2) This jetpack is outperforming known jetpacks. How?
- ivanb 6y agoThere was a science fiction short story where a group of scientists was invited by military personnel to watch a short secret footage of someone flying a jetpack. The scientists were told that the inventor only had one prototype and he crashed it killing himself and destroying the unique device. Next several months the scientists spent brainstorming and trying to figure out how he did it. Spoiler! The footage turned out to be fabricated by military. The scientists still built a prototype of the jetpack. Not so fast, light and agile but they made something that was previously considered impossible.
- FpUser 6y agoI did read that short story a long time ago. That was not jetpack but rather based on anti gravity.
- bessarabov 6y agoI was sure that I've also read that story. But I don't remember nor the author, nor title. Started searching and found a thread on stackexchange. It looks like thaere are several stories with such a plot: https://scifi.stackexchange.com/questions/74090/scientists-shown-a-fake-anti-gravity-device-to-motivate-them-to-build-the-real-t https://scifi.stackexchange.com/questions/74090/scientists-s...
- vulcan01 6y agoDoes anyone know the title of this short story?
- beamatronic 6y agoThat’s the gag. You now have to write it yourself.