Timeline for How to effectively slow down a ship about to shoot through the Solar System at 0.6c?
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
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| Apr 27, 2016 at 17:45 | comment | added | Loren Pechtel | @Muuski Fuel! If they normally only have the fuel for a one-way voyage (and I showed carrying the fuel for a round trip causes a horrendous mass ratio) and they use that fuel to kill their outbound velocity that will leave them with little fuel and the better part of a light year from Earth. | |
| Apr 27, 2016 at 15:02 | comment | added | Muuski | I would like to see more explanation why you think they would have to swing around another system. If it takes 7 months to decelerate after the rescue interception and, say, a year or two to accelerate back to earth safely and slowly then they should be back well within the 5 year supply deadline. | |
| Apr 27, 2016 at 2:51 | comment | added | Loren Pechtel | @PeterA.Schneider In a do-or-die scenario I think we could boost to well over .01c with a beamed-power setup. | |
| Apr 27, 2016 at 2:50 | comment | added | Loren Pechtel | @SerbanTanasa Sure, they could build a 20g rocket--but it's very unlikely they have already designed one. What's the mission for a 20g starship? And a 20g burn doesn't change the delta-v issues. | |
| Apr 26, 2016 at 13:52 | comment | added | user3652621 | @LorenPechtel, you can send an unmanned interceptor at a 20g burn rate going out, if the ship can take it. Moreover, you can intercept in passing, as it goes by, and decelerate and turn around. No need to stop at Earth distance. Agreed that for < Kardashev1 building such a thing in months would be hard, hence having a rescue ship on standby. | |
| Apr 26, 2016 at 11:04 | comment | added | Peter - Reinstate Monica | We'd be hard-pressed to get anything to 0.01c. Oh, anything that weighs more than a nucleus. | |
| Apr 26, 2016 at 5:36 | history | edited | Loren Pechtel | CC BY-SA 3.0 |
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| Apr 26, 2016 at 5:10 | comment | added | Loren Pechtel | @njzk2 Of course they do--we would be hard pressed to get any ship up to .6c, let alone anything manned. I'm simply assuming the rescue mission has pretty much the same tech as the rocket in trouble. | |
| Apr 26, 2016 at 3:25 | comment | added | njzk2 | they have ships that go at 0.6c all the way to other stars. They probably have more efficient rockets than ours. | |
| Apr 25, 2016 at 22:26 | history | answered | Loren Pechtel | CC BY-SA 3.0 |