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Question for Our Resident THT Rocket Scientists

Old 03-25-2009, 11:12 AM
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Default Question for Our Resident THT Rocket Scientists

The moon is 238,855-miles above the Earth.

It takes 3-days to get to/from the moon.



The space station is 250-miles above the Earth.

It takes 3-days to get to/from the space station.


The space shuttle is undocking and coming home today, Wednesday, will be landing in Florida over the weekend.

Why does it take 3-days to go 250-miles in a rocket?
Old 03-25-2009, 11:17 AM
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I would say because it is not a straight shot. They must circle the earth to descend.
Old 03-25-2009, 11:18 AM
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Site seeing;?maybe its a way to spend the tax payers money and make sure they spend all their buget so they dont lose any funding;? they got 10cent off a gallon of rocket fuel and thought they would take advantage of it;? I dont know, I'll shut up now
Old 03-25-2009, 11:21 AM
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Its because of time zones.
Old 03-25-2009, 11:28 AM
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Well, as previously stated, they don't just drop straight down. It takes a while to get in the correct alignment for deorbiting. I think it takes a while to get ready for it, too. It's a violent reentry. They're probably finishing up other experiments, too.
Old 03-25-2009, 11:31 AM
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What?!? Like the rock coming back from the moon didn't have to circle the Earth for re-entry also?!? ;? IT DID!

I can see it taking a little extra time getting caught up with the space station, can see time getting lined up for docking. Hell, I can even see a little extra time needed to find the thing. But 3-days?!? And another 3-days to come back?!?
Old 03-25-2009, 11:39 AM
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decompression stop???
Old 03-25-2009, 11:45 AM
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Average human walking speed = 3mph.

24-hrs x 3mph = 72-miles per day.

72-miles x 3-days = 216-miles.

Hell, if they got out and started walking they'd almost be home in the same amount of time!!!
Old 03-25-2009, 11:51 AM
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They must still be using "outdated" 2 bangers. They're having to re-fuel every couple of hours.

They should consider re-powering with 4 stroke yammys.
Old 03-25-2009, 11:59 AM
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They don't have reverse; it takes them a while to slow down so they won't hit the dock, no sissy wheels.
Old 03-25-2009, 01:05 PM
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OK. I'll derail this thread now.
Two Blonds are sitting on a park bench together in California.
One says to the other: "which do you think is closest? Florida, or the Moon?"
The other says, " Duhh.......you can't see Florida from here"........
Old 03-25-2009, 01:26 PM
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Toll booths?
Old 03-25-2009, 01:43 PM
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Its because of trafic but after the Obama stimulas bill and new spending on infrastructure it should only take a day.
Old 03-25-2009, 01:45 PM
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I believe the question was refered to the THT Rocket Scientist...and dat be me..Now the correct answer is:

What was the question again..Yes, I remember...Now do you research and post your best answer here and I'll check for the right answer. Good Luck to all..
Old 03-25-2009, 01:55 PM
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From what I understand it can take up to 3 days. It all depends on how much work they need to do to prep for reentry. You also can't just drop into the atmosphere you need to take time to slow the shuttle down for a controlled reentry. Of course there is the need to reenter at the right time cause once the shuttle gets into the atmosphere then it is just a huge glider (no engines).
Old 03-25-2009, 01:56 PM
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The Space shuttle has a VST filter, and its probably because of the new E10 rocket fuel they are using. The E10 is scrubbing the crap off the insides of the fuel tanks and cloggin the VST.

Or........they started using Ring Free and its fouling the shuttles spark plugs. Either or.

I can see the time needed to sync speeds between the two for docking, but the undocking time does not seem right. Unplug the power cord, push off and head down. Just a guess.
Old 03-25-2009, 02:38 PM
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Originally Posted by pyettaw View Post
From what I understand it can take up to 3 days. It all depends on how much work they need to do to prep for reentry. You also can't just drop into the atmosphere you need to take time to slow the shuttle down for a controlled reentry. Of course there is the need to reenter at the right time cause once the shuttle gets into the atmosphere then it is just a huge glider (no engines).
I think this is basically it. The premise that it takes 3 days from the ST orbit is not exactly true.
Old 03-25-2009, 02:45 PM
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It is because they have to go around all the space junk and all this takes time. Then the line it up for re-entry after it hits the atomisphere it becomes a fling brick with little or no room for a mistake!!
Old 03-25-2009, 04:20 PM
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The real answer is

They are both the same distance from Earth and it is a plot to tell us that the moon is farther away.
Old 03-25-2009, 04:25 PM
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Originally Posted by emgag View Post
... " Duhh.......you can't see Florida from here"........
Wow! That is so true.


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