Voyager-1 at 100 AU!, A space milestone this month |
Voyager-1 at 100 AU!, A space milestone this month |
Aug 2 2006, 12:51 PM
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#1
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Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
Nobody highlighted this and I didn't find any comment from Nasa/Voyager sites.
On August,11 the intrepid Voyager-1 probe will reach 14.960 billion Km from the Sun, one hundred times the average Earth-Sun distance! This event will be followed, after 16 days, by the 100AU from Earth reach. From astrophysical standpoint, first event is the most important but, I think, most people will be emotionally hit from the second one. So I would like to start a poll on this. -------------------- I always think before posting! - Marco -
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Aug 15 2006, 03:44 PM
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#2
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
It's only a couple of Kg - it may well be that the trajectory for the initial launches were such that additional payload capacity was available for V2 and thus it was tanked up a little heavier. (Identical LV's on slightly different traj's would suggest slightly different mass budgets perhaps)
Perhaps because V1 was the first one out the gate, the lessons learnt on how to minimise fuel useage were learnt on V1 and carried over to V2. And it's not hard to imagine one extreme safing event causing a big chunk of fuel useage at some point during a 20+ year mission. Lots of reasons that could cause the difference. Doug |
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