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"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. J
by 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.)