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Post by samchiu2000 on Mar 19, 2017 3:16:26 GMT
I just visited the project rho website and find after a spacecraft achieve Terra escape velocity , it can go to mars with only 2 km/s dv , and when you reach LEO , you already achieved Terra escape velocity... Here the link~ go to 'interplanetary section~' |
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Post by deltav on Mar 19, 2017 4:20:42 GMT
I just visited the project rho website and find after a spacecraft achieve Terra escape velocity , it can go to mars with only 2 km/s dv , and when you reach LEO , you already achieved Terra escape velocity... Here the link~ go to 'interplanetary section~' For probes and other unmanned craft no problem, absolutely, but for humans? (Maybe if you waited decades for the perfect launch window/ planetary alignment). You can get around the solar system with little baby pinkie sized deltav budgets, but gosh it takes FOREVER like decades. And it makes your approach/ attacks/ patrols super predictable even decades in the future. en.wikipedia.org/wiki/Interplanetary_Transport_Network |
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Post by samchiu2000 on Mar 19, 2017 5:45:28 GMT
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Post by vegemeister on Mar 19, 2017 6:01:08 GMT
IIRC, the SpaceX ITS is supposed to get refueled for the return trip on Mars. Also I think they're planning to use a faster-than-Hohmann trajectory to reduce radiation exposure. |
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Post by deltav on Mar 19, 2017 6:01:16 GMT
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Post by samchiu2000 on Mar 19, 2017 10:35:39 GMT
Alright get it guys~
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Post by deltav on Mar 19, 2017 10:41:59 GMT
Not so fast, it could work for stealth ships with crew asleep in suspended animation or something. Or even for some kind of preprogrammed hunter killer drones that shoot at everything without a friendly FOF signal. Or maybe even some types of missiles. It could be useful somehow... |
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Post by samchiu2000 on Mar 19, 2017 10:50:25 GMT
Not so fast, it could work for stealth ships with crew asleep in suspended animation or something. Or even for some kind of preprogrammed hunter killer drones that shoot at everything without a friendly FOF signal. Or maybe even some types of missiles. It could be useful somehow... Personally i don't think that stealth ships in space is really that useful , and i would prefer to pour the resource to build conventional spaceships... |
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