Quoted:
Quoted: It was the swiftest spacecraft ever launched and was expected to reach Earth's moon in nine hours and Jupiter in just over a year.
thats fast, I think it took the astronauts 3 days
|
Yeah, but that's because if we sent the astronauts to the moon that fast, they'd be headed to Pluto too. If the astronauts went too fast, they wouldn't orbit around the moon -- they'd slingshot past it.
|
You gotta pack enough fuel to accellerate and decelerate, too, that's the big issue on these things. You want to be pretty much fuel neutral - have just enough momentum to get their and put yourself in orbit, no big burns. To get there in 9 hours would take a big burn to enter orbit.
For more info on this type of thing, look a Buzz Aldrin's (I think) article in Popular science a few months back. He had a very low fuel cost, but very fast, way to get to Mars figured out. Basically put a craft in an orbit that would slingshot around Earth and Mars periodically... All our CEV's would need to do is catch up before the slingshot, and hitch a ride.