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Old 04-05-2012, 12:47 PM
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Default Moon Physics Question?

Watched the IRON SKY trailer a while ago and it showed a scene where some Nazis where firing a rocket launcher on the Moon's surface which of course has no atmosphere…

So… if in reality one re-enacted this event.

a) Would the fired rocket (depending on the nature of the propulsion system) leave a trail of smoke?

b) If so, what would happen to the smoke? (obviously it cannot dissipate - no atmosphere)

c) How long would it remain visible after the event?

d) Would the person firing the rocket launcher be pushed in the opposite direction?
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Old 04-05-2012, 01:57 PM
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a: if it burns, probably
b: guess it would slowly sink down
c: until the next scene
d: certainly

You do realize however, that the film is a parody...?
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Old 04-05-2012, 02:05 PM
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Quote:
Originally Posted by NCC-73515 View Post
a: if it burns, probably
b: guess it would slowly sink down
c: until the next scene
d: certainly

You do realize however, that the film is a parody...?
Oh absolutely… but It made me wonder, that's all.

On the same note: I remember watching the Lunar Lander ascent module blasting off. No smoke as far as I remember. I wonder what type of rockets they used?
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Old 04-05-2012, 02:08 PM
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Found this video - no smoke.

Lunar module blast off and leaves the Moon (Apollo 17)

http://www.youtube.com/watch?v=Obd_jTO66-0
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Old 04-05-2012, 03:52 PM
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I read that most of the shuttle smoke comes from the sprayed water on the launch pad
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Old 04-05-2012, 04:10 PM
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Quote:
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I read that most of the shuttle smoke comes from the sprayed water on the launch pad
Sure enough but not when its off the pad and in the air.
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Old 04-06-2012, 12:21 PM
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I never saw any engine in space produce smoke
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Old 04-06-2012, 01:18 PM
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The flip side is, the Iron Sky trailer looks damn fun! And I think we can discount scientific accuracy as being a key component!
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Old 04-06-2012, 01:46 PM
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We always can in sci-fi, the irony being that once the stuff is actually accurately depicted, like e.g. the 'no sound in space moment' in the beginning of STXI, you are so surprised as viewer that the mere surprise makes it work dramatically.
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