Phil Perry Posted March 20, 2018 Share Posted March 20, 2018 Tiangong-1 Chinese Space Station Could Fall In Corsica, France – How Dangerous Would That Be? Link to comment Share on other sites More sharing options...
nomadpete Posted March 20, 2018 Share Posted March 20, 2018 Just like spacelab. It's about time Simsmetal sent up a scrap collection skip bin. Link to comment Share on other sites More sharing options...
Phil Perry Posted March 20, 2018 Author Share Posted March 20, 2018 OK,. . .let's work out the fuel burn / Cost/ to slow the rubbish to a sensible re-entry velocity,. . .so that all that lovely scrap doesn't get frictionationally cremated,. . .then weigh the argument against what a good Scrap dealer could get for the scrap. . . .after having to collect it from the middle of some ocean. . . .etc. . . . Link to comment Share on other sites More sharing options...
Marty_d Posted March 21, 2018 Share Posted March 21, 2018 If you could control the speed and angle of re-entry, then you don't need to collect it from the ocean. Just have your scrap yard in the middle of a big desert somewhere and guide the rubbish straight into it. Link to comment Share on other sites More sharing options...
Admin Posted March 21, 2018 Share Posted March 21, 2018 They say it could even come down over Melbourne...they will not know until the day before Link to comment Share on other sites More sharing options...
Methusala Posted March 21, 2018 Share Posted March 21, 2018 Hurray!!! Another triumph of technology over good sense. Glad I'm 67 ...not 17. Link to comment Share on other sites More sharing options...
Marty_d Posted March 21, 2018 Share Posted March 21, 2018 Hurray!!! Another triumph of technology over good sense. Glad I'm 67 ...not 17. I dunno. I'd quite like to be 17 again... knowing what I know now... Link to comment Share on other sites More sharing options...
nomadpete Posted March 21, 2018 Share Posted March 21, 2018 But the smelting fumes wouldn't be a problem in space. I'm pretty sure those exotic metals would be worth more than cast iron or coke cans. And you could use solar power to melt it all down. I'm writing a letter to Elon right away. Link to comment Share on other sites More sharing options...
SDQDI Posted March 21, 2018 Share Posted March 21, 2018 Using solar power is silly, why not design a capsule that uses the heat of reentry to smelt it all on the way back? Done and dusted! Link to comment Share on other sites More sharing options...
nomadpete Posted March 21, 2018 Share Posted March 21, 2018 Using solar power is silly, why not design a capsule that uses the heat of reentry to smelt it all on the way back? Done and dusted! Isn't that what is happening anyway? Link to comment Share on other sites More sharing options...
SDQDI Posted March 21, 2018 Share Posted March 21, 2018 I thought it was just melted away to nothing? I thought a nice adjustable heat protecting capsule could be designed to let the stuff melt but then shield it so it wasn't all burnt up? It could then land with a nice load of ingots ready for their next life. Link to comment Share on other sites More sharing options...
Guest Guest Posted March 21, 2018 Share Posted March 21, 2018 Hopefully it lands in Bundooraa ! Link to comment Share on other sites More sharing options...
Birdseye Posted March 21, 2018 Share Posted March 21, 2018 They say it could even come down over Melbourne...they will not know until the day before About the only thing anyone can say with any degree of certainty is that it should come down somewhere between 43N and 43S. So it could join MH407. Link to comment Share on other sites More sharing options...
Birdseye Posted March 22, 2018 Share Posted March 22, 2018 According to one tracking site latest on the demise is that the final decay may at occur 0530Z on the 3rd April +- 80 hours The reentry may occur on any of the paths in this diagram: TIANGONG 1 - NORAD 37820 - 3D Online Satellite Tracking Link to comment Share on other sites More sharing options...
Old Koreelah Posted March 22, 2018 Share Posted March 22, 2018 It astounds me that humans spends squillions getting these complex, expensive objects up there, but happily accept their short useful life, and deliberately send them back to earth. Why not gather up all that valuable scrap metal and reuse it to build new structures in orbit? Link to comment Share on other sites More sharing options...
Phil Perry Posted March 22, 2018 Author Share Posted March 22, 2018 It astounds me that humans spends squillions getting these complex, expensive objects up there, but happily accept their short useful life, and deliberately send them back to earth.Why not gather up all that valuable scrap metal and reuse it to build new structures in orbit? The Chinese have admitted that they have no control over the unit. ( Flat batteries,. . . exhausted fuel for attitude thrusters ? ) This means that it is probably ( Possibly ) 'Tumbling' and not in a semi static position. This means that any attempted orbital interface with it by another spacecraft would be suicidal, unless it was of such a size as to be 'Grabbed' as with a robot arm on a large 'Shuttle' type vehicle to stabilize it. . . . .As far as I am aware, the Chinese do not have a shuttle type vehicle to accomplish that. I can't recall the original weight quoted by the Chinese, was it 10 Tonnes ? ? ? that's a bloody big lump to mess around with. . . .it obviously isn't worth the effort to recover it so they'll just allow it to fall wherever it falls. . . . .This we shall know in due course. . . .let us fervently hope that what's left of it doesn't do any damage to persons unknown in that rather large band of possible impact. . . . Link to comment Share on other sites More sharing options...
Admin Posted March 22, 2018 Share Posted March 22, 2018 They say that of the 8.5 tonne that it is, only about 100kg of it will not burn up on re-entry leaving that 100kg of pieces to hit the ground Link to comment Share on other sites More sharing options...
Phil Perry Posted March 22, 2018 Author Share Posted March 22, 2018 When Spacelab hit in Western Australia,. . .it was determined that some of the debris was travelling at 5,000 Km/H . . . and that one large piece 'Bounced' and continued on for another 100 Km. . . .100 Kg at that velocity could do some damage I would have thought. . . .lets hope it hits in the sea somewhere. . . . . . . Link to comment Share on other sites More sharing options...
SDQDI Posted March 22, 2018 Share Posted March 22, 2018 But I guess the 100kgs wouldnt all be in one lump? But still haveing said that a half a kilo lump would still do some damage at that speed. Link to comment Share on other sites More sharing options...
Birdseye Posted March 22, 2018 Share Posted March 22, 2018 But I guess the 100kgs wouldnt all be in one lump? But still haveing said that a half a kilo lump would still do some damage at that speed. A 7.62 bullet only weighs 9 or 10 grams and has a velocity near half of that speed. The risk management is based solely on the (im) probability of material landing in an occupied space. Link to comment Share on other sites More sharing options...
Methusala Posted March 22, 2018 Share Posted March 22, 2018 When Spacelab hit in Western Australia,. . .it was determined that some of the debris was travelling at 5,000 Km/H . . . and that one large piece 'Bounced' and continued on for another 100 Km. . . .100 Kg at that velocity could do some damage I would have thought. . . .lets hope it hits in the sea somewher Could land on our National Parliament, tsk, tsk! Link to comment Share on other sites More sharing options...
Old Koreelah Posted March 22, 2018 Share Posted March 22, 2018 The Chinese have admitted that they have no control over the unit. ( Flat batteries,. . . exhausted fuel for attitude thrusters ? ) This means that it is probably ( Possibly ) 'Tumbling' and not in a semi static position. This means that any attempted orbital interface with it by another spacecraft would be suicidal, unless it was of such a size as to be 'Grabbed' as with a robot arm on a large 'Shuttle' type vehicle to stabilize it. . . . .As far as I am aware, the Chinese do not have a shuttle type vehicle to accomplish that. I can't recall the original weight quoted by the Chinese, was it 10 Tonnes ? ? ? that's a bloody big lump to mess around with. . . .it obviously isn't worth the effort to recover it so they'll just allow it to fall wherever it falls. . . . .This we shall know in due course. . . .let us fervently hope that what's left of it doesn't do any damage to persons unknown in that rather large band of possible impact. . . . Agreed, Phil. My comment is about space junk in general. Lots of research is being done on snagging or shooting down space junk with lasers;it costs so much to get that material up there- why not keep it there as a valuable future resource. Link to comment Share on other sites More sharing options...
Old Koreelah Posted March 23, 2018 Share Posted March 23, 2018 But I guess the 100kgs wouldnt all be in one lump? But still haveing said that a half a kilo lump would still do some damage at that speed. That's the dilemma of blowing up any asteroid that threatens our planet: a big one might miss, but if we smash it into little bits, we're more likely to hit by lots of smaller bits. Link to comment Share on other sites More sharing options...
bexrbetter Posted March 23, 2018 Share Posted March 23, 2018 There's only been one recorded hit on a human from space debris in all of history, a woman who ended up with a huge black bruise on her leg. My Mum got hit by the nut of a slasher blade bolt when the blade came off (and whizzed past her head) and left a huge black bruise on her leg, and I have been hit in the eye by debris from a whipper snipper. So I am infinitely more concerned about someone mowing near me than I am about a satellite re-entry. Link to comment Share on other sites More sharing options...
spacesailor Posted March 23, 2018 Share Posted March 23, 2018 . "Could land on our National Parliament, tsk, tsk!" Do we send the Chinese a bill for damage, or a medal. " Lots of research is being done on snagging or shooting down space junk with lasers;" Or send a big powerful magnate up, It should grow with all the Attachment's adorning it. spacesailor Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now