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Activity for Josh Hyatt‭

Type On... Excerpt Status Date
Comment Post #285964 Thanks for catching my mistake, I've corrected this. See [this comment](https://scientific-speculation.codidact.com/comments/thread/5923#comment-16673) for my explanation on the use of the word relativistic.
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about 2 years ago
Comment Post #285964 Thank you for pointing this out. I had been under the impression that something moving at 10% the speed of light would experience some relativistic effects on a significant scale. I've corrected the question.
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about 2 years ago
Edit Post #285964 Post edited:
Fix kinetic energy calculation
about 2 years ago
Edit Post #285964 Post edited:
Relativistic is not applicable here
about 2 years ago
Edit Post #285964 Initial revision about 2 years ago
Question High-Energy Exhaust Shielding for Far-Future Drive
Imagine a far-future spacecraft drive that accelerates its reaction mass to a small fraction the speed of light (say, 1,000 km/s). Say the mass flow rate to the drive were 1kg/s, and say the reaction mass were hydrogen. what effect would the resulting exhaust have on humans? On other spacecraft? If f...
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about 2 years ago
Comment Post #280613 @Peter Taylor The craft is at periapsis in a highly eccentric burn. If it continues along its path, it will certainly move away from the planet. If, however, it burns directly towards the planet at the right acceleration, the periapsis will move with the spacecraft, but the eccentricity will stay the...
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about 3 years ago
Comment Post #280613 @Mr Bumble OP updated.
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about 3 years ago
Edit Post #280613 Post edited:
about 3 years ago
Edit Post #280613 Initial revision about 3 years ago
Question Centripetal Burn in Orbit
Imagine a spacecraft in a highly eccentric orbit. Say the craft burns at periapsis towards the planet such that its orbital eccentricity does not change and the craft's periapsis moves with the ship so the two stay at the same point at all times. This would result in a circular orbit, but a faster or...
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about 3 years ago