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So… the moon, or even Venus?

shagie 4y ago
Not sure Venus is within 1 month travel time. Granted this is with Apollo era technology... but we're still talking Saturn V https://en.wikipedia.org/wiki/Manned_Venus_flyby https://en.wikipedia.org/wiki/Manned_Venus_flyby > The proposed mission would have used a Saturn V to send three astronauts on a flight past Venus, which would have lasted approximately one year. > ... > Phase C would be the actual manned flyby, using a Block IV CSM and an updated version of the Venus flyby S-IVB which would carry a large radio antenna for communication with Earth. > ... > The Phase C mission was planned for a launch in late October or early November 1973, when the velocity requirements to reach Venus and the duration of the resulting mission would be at their lowest. After a brief stay in Earth parking orbit to check out the spacecraft, the crew would have headed for Venus. ... After a successful S-IVB burn, the spacecraft would have passed approximately 3000 miles from the surface of Venus about four months later. Of note https://trajbrowser.arc.nasa.gov/traj_browser.php https://trajbrowser.arc.nasa.gov/traj_browser.php is fun to play with. - Custom list (Venus), one way rendezvous, minimize duration, all trajectories. The shortest one is an 80 day one "burn straight there" approach. I'm not sure that NASA has that updated for more recent years (its a search - not a compute) - still gives you an idea of what is doable and the inner solar system opportunities are fairly consistent (compared to the Grand Tour https://en.wikipedia.org/wiki/Grand_Tour_program https://en.wikipedia.org/wiki/Grand_Tour_program which is once every 175 years). See also https://en.wikipedia.org/wiki/Interplanetary_Transport_Network https://en.wikipedia.org/wiki/Interplanetary_Transport_Netwo... and if that sounds like fun, then High Frontier board game might be up your alley ( current edition https://iongamedesign.com/products/high-frontier-4-all https://iongamedesign.com/products/high-frontier-4-all https://boardgamegeek.com/boardgame/281655/high-frontier-4-all https://boardgamegeek.com/boardgame/281655/high-frontier-4-a... ).
- shagie 4y ago
  The Venus missions... One way rendezvous - 80 days is the minimal - https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NECs=on&chk_maxMag=on&maxMag=25&chk_maxOCC=on&maxOCC=4&chk_target_list=on&target_list=Venus&mission_class=oneway&mission_type=rendezvous&LD1=2016&LD2=2024&maxDT=2.0&DTunit=yrs&maxDV=7.0&min=DT&wdw_width=-1&submit=Search#a_load_results https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NE... If you're just doing a flyby and letting the ship then get lost, it can get down to 48 days https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NECs=on&chk_maxMag=on&maxMag=25&chk_maxOCC=on&maxOCC=4&chk_target_list=on&target_list=Venus&mission_class=oneway&mission_type=flyby&LD1=2016&LD2=2024&maxDT=2.0&DTunit=yrs&maxDV=7.0&min=DT&wdw_width=-1&submit=Search#a_load_results https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NE... The one way flyby is not likely one that would be good for human travelers as you aren't really stopping (or even slowing down enough to get captured). The shortest round trips are just over a year long. https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NECs=on&chk_maxMag=on&maxMag=25&chk_maxOCC=on&maxOCC=4&chk_target_list=on&target_list=Venus&mission_class=roundtrip&mission_type=rendezvous&LD1=2016&LD2=2024&maxDT=2.0&DTunit=yrs&maxDV=7.0&min=DT&wdw_width=-1&submit=Search#a_load_results https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NE... The trip there is only 90 days, but the return leg is one of the least optimal options with a 280 day "climb back out" trip. You could do a 96 day there, and 80 day back, but to get the right orbital arrangement it then means that you'd need to stay at Venus for 1.3 years. It is a neat thing to play with and see what options exist.
  - deleted 4y ago
    [deleted]
- svnt 4y ago
  But is it an Earth month or a Venus month? Does Venus even have months?

Not sure Venus is within 1 month travel time. Granted this is with Apollo era technology... but we're still talking Saturn V https://en.wikipedia.org/wiki/Manned_Venus_flyby https://en.wikipedia.org/wiki/Manned_Venus_flyby > The proposed mission would have used a Saturn V to send three astronauts on a flight past Venus, which would have lasted approximately one year. > ... > Phase C would be the actual manned flyby, using a Block IV CSM and an updated version of the Venus flyby S-IVB which would carry a large radio antenna for communication with Earth. > ... > The Phase C mission was planned for a launch in late October or early November 1973, when the velocity requirements to reach Venus and the duration of the resulting mission would be at their lowest. After a brief stay in Earth parking orbit to check out the spacecraft, the crew would have headed for Venus. ... After a successful S-IVB burn, the spacecraft would have passed approximately 3000 miles from the surface of Venus about four months later. Of note https://trajbrowser.arc.nasa.gov/traj_browser.php https://trajbrowser.arc.nasa.gov/traj_browser.php is fun to play with. - Custom list (Venus), one way rendezvous, minimize duration, all trajectories. The shortest one is an 80 day one "burn straight there" approach. I'm not sure that NASA has that updated for more recent years (its a search - not a compute) - still gives you an idea of what is doable and the inner solar system opportunities are fairly consistent (compared to the Grand Tour https://en.wikipedia.org/wiki/Grand_Tour_program https://en.wikipedia.org/wiki/Grand_Tour_program which is once every 175 years). See also https://en.wikipedia.org/wiki/Interplanetary_Transport_Network https://en.wikipedia.org/wiki/Interplanetary_Transport_Netwo... and if that sounds like fun, then High Frontier board game might be up your alley ( current edition https://iongamedesign.com/products/high-frontier-4-all https://iongamedesign.com/products/high-frontier-4-all https://boardgamegeek.com/boardgame/281655/high-frontier-4-all https://boardgamegeek.com/boardgame/281655/high-frontier-4-a... ).

shagie 4y ago
The Venus missions... One way rendezvous - 80 days is the minimal - https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NECs=on&chk_maxMag=on&maxMag=25&chk_maxOCC=on&maxOCC=4&chk_target_list=on&target_list=Venus&mission_class=oneway&mission_type=rendezvous&LD1=2016&LD2=2024&maxDT=2.0&DTunit=yrs&maxDV=7.0&min=DT&wdw_width=-1&submit=Search#a_load_results https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NE... If you're just doing a flyby and letting the ship then get lost, it can get down to 48 days https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NECs=on&chk_maxMag=on&maxMag=25&chk_maxOCC=on&maxOCC=4&chk_target_list=on&target_list=Venus&mission_class=oneway&mission_type=flyby&LD1=2016&LD2=2024&maxDT=2.0&DTunit=yrs&maxDV=7.0&min=DT&wdw_width=-1&submit=Search#a_load_results https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NE... The one way flyby is not likely one that would be good for human travelers as you aren't really stopping (or even slowing down enough to get captured). The shortest round trips are just over a year long. https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NECs=on&chk_maxMag=on&maxMag=25&chk_maxOCC=on&maxOCC=4&chk_target_list=on&target_list=Venus&mission_class=roundtrip&mission_type=rendezvous&LD1=2016&LD2=2024&maxDT=2.0&DTunit=yrs&maxDV=7.0&min=DT&wdw_width=-1&submit=Search#a_load_results https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NE... The trip there is only 90 days, but the return leg is one of the least optimal options with a 280 day "climb back out" trip. You could do a 96 day there, and 80 day back, but to get the right orbital arrangement it then means that you'd need to stay at Venus for 1.3 years. It is a neat thing to play with and see what options exist.
- deleted 4y ago
  [deleted]
svnt 4y ago
But is it an Earth month or a Venus month? Does Venus even have months?