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  #41  
Old 23.09.2011, 09:20
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Re: Falling Satellite

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Fair enough. I'll give you some hints.
  • You assumed the satellite is dropping vertically, so its energy would be given by
  • The satellite has had a semimajor orbital axis of 600km, so has been travelling at 7km per second,
    hence its kinetic energy () dwarfs the potential energy of the vehicle.
  • At hypersonic speeds, a reasonable CD would be closer to 1 than 2.
  • As the vehicle reenters, components and sections will burn away, constantly reducing cross-sectional area.
  • Lastly - as should be pretty obvious by now - the vehicle will be decelerating, not accelerating.

Thus armed, and as A Good Manager should, I'll leave you to rework your calculation, rather than do your job for you


Your kungfu is stronger, wise one.
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  #42  
Old 23.09.2011, 11:44
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Re: Falling Satellite

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This is not a job for kids We need to send people who know what they're doing

Attachment 32810

What good will they do? None of em' can see and they're probably all incontinent.. is it me or does it look like Tommy's forgotten to put his teeth in
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  #43  
Old 23.09.2011, 11:53
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Re: Falling Satellite

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I found the reason for the public not to touch any remnants much more alarming - according to the Alarmzentrale/panic ministry:

"Due to the rapid impact some pieces may have sharp edges"

Yeah that was the cover-up for the second reason, the real one, that it is US Gov't property and people shouldn't tamper with it. ie. they don't want their space/defense secrets stolen by someone.
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  #44  
Old 23.09.2011, 12:07
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Re: Falling Satellite

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Yeah that was the cover-up for the second reason, the real one, that it is US Gov't property and people shouldn't tamper with it. ie. they don't want their space/defense secrets stolen by someone.
Yeah, twenty year-old secrets today's twelve year-old gamer would laugh at.
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  #45  
Old 23.09.2011, 12:07
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Re: Falling Satellite

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Yeah that was the cover-up for the second reason, the real one, that it is US Gov't property and people shouldn't tamper with it. ie. they don't want their space/defense secrets stolen by someone.
Oh, no finders keepers then? Shame... could do with some good decoration for my living room - anybody got a radiation suit they don't need anymore?

Just gave me a good giggle when I read this in the 20 Minuten on the train this morning...
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  #46  
Old 23.09.2011, 12:18
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Re: Falling Satellite

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Oh, no finders keepers then? Shame... could do with some good decoration for my living room - anybody got a radiation suit they don't need anymore?

Just gave me a good giggle when I read this in the 20 Minuten on the train this morning...
Get away from my piece of satellite scrap! Mine... Mine... MINE MINE MINE


I felt embarassed when I was pointed at the cover, very excitedly, exclaming "we were talking about this like one month ago in EF!!!!" What would my life be without EF?
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  #47  
Old 23.09.2011, 12:23
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Re: Falling Satellite



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  #48  
Old 23.09.2011, 14:28
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Re: Falling Satellite



this is updated where it is right now.. its on its way
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  #49  
Old 23.09.2011, 14:54
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Re: Falling Satellite

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this is updated where it is right now.. its on its way
Get a grip, man - it's still 170km up and and tootling along at 7.8km/s!!!

Go put the kettle on and make yourself a cup of tea
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  #50  
Old 23.09.2011, 15:12
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Re: Falling Satellite

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Get a grip, man - it's still 170km up and and tootling along at 7.8km/s!!!

Go put the kettle on and make yourself a cup of tea
cant.. too busy watching the skies in case it falls on my head

at what point will we be able to see it?
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  #51  
Old 23.09.2011, 15:21
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Re: Falling Satellite

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cant.. too busy watching the skies in case it falls on my head

at what point will we be able to see it?
Probably just before you hear the sound of your window being broken...


It would appear to have changed its mind about coming down - its altitude is now 176km
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  #52  
Old 23.09.2011, 15:26
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Re: Falling Satellite

Look SE about 10ish tonight
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  #53  
Old 23.09.2011, 15:27
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Re: Falling Satellite

http://www.space.com/12999-dead-nasa...h-sept-23.html

http://www.space.com/13018-falling-n...-coverage.html
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  #54  
Old 23.09.2011, 15:33
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Re: Falling Satellite

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Probably just before you hear the sound of your window being broken...


It would appear to have changed its mind about coming down - its altitude is now 176km
i turned the fan on and pointed it upwards... seems to be working
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  #55  
Old 23.09.2011, 15:46
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Re: Falling Satellite

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  #56  
Old 23.09.2011, 15:56
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Re: Falling Satellite

Of course, as it crosses the International Date Line it will lose a day, and we'll be back to where we were yesterday afternoon
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Old 23.09.2011, 16:03
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Re: Falling Satellite

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Of course, as it crosses the International Date Line it will lose a day, and we'll be back to where we were yesterday afternoon
Is this about the neutrinos again?
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  #58  
Old 23.09.2011, 16:12
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Re: Falling Satellite

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Is this about the neutrinos again?
I thought I had already explained it to you tommorow
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  #59  
Old 23.09.2011, 16:13
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Re: Falling Satellite

My 7 year old came out of school today and told me that we are going to get hit by a bus.. meaning the Satellite is on its way and it is about the size of a bus
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  #60  
Old 23.09.2011, 16:16
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Re: Falling Satellite

On a more serious note:


Will the satellite bring a radioactive contamination that will cause the dead to rise???
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