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Progress fails to dock with ISS
Pat Flannery wrote:
On 7/2/2010 6:38 PM, Greg D. Moore (Strider) wrote: The real question is where is Jim Oberg. I imagine he's presently checking up on the specifics of the situation so he can write a article about it. Let's face it...figuring out what _really_ is going on versus the Russian statements about what is going on is like trying to decipher the Dead Sea Scrolls. It takes a few days. Yeah, no kidding. That's the part I'm real curious in. It lost its lock about 25 minutes from docking. Did it simply drift or was the miss due to an avoidance manevour? If the former, yet another near miss. If the latter, not quite as bad, but still troubling. And during those 25 minutes, what was the crew doing? Where they prepping the Soyuz or were they confident enough it would be a miss? Inquiring minds want to know! -- Greg Moore Ask me about lily, an RPI based CMC. |
#12
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Progress fails to dock with ISS
Pat Flannery wrote:
On 7/2/2010 7:19 PM, Greg D. Moore (Strider) wrote: And during those 25 minutes, what was the crew doing? Keeping a very careful eye on the thing, and getting ready to flee into the Soyuz lifeboats if it looked like it was about to hit them. :-D I like the Russian statement about nothing critical being aboard the Progress that is needed for the ISS. If that's the case, then why launch it at all? Yeah. I think that's one of those statements that is obvious and wrong and right at the same time. Yeah, it's not like, "oops, we missed this shipment, time to come home immediately." On the other hand it could end up being a case of "Oops, missed this shipment, better replan our next scheduled launch, conserve toilet paper and other things" in the meantime. Progress is great, but really need to keep shuttle a bit longer and get the ATV to be flying on a more regular basis. (I see the next one is scheduled for November and is named Johannes Kepler). Damn, expected to cost $300 Million a flight, not including launch costs? And folks call the Shuttle expensive. In case it can't dock, keep an eye on ISS altitude he http://www.heavens-above.com/IssHeig...alt=0&t z=CET Because at some point it gets so low that a boost mission can't get it up to a high orbit again by defeating atmospheric drag. Pat -- Greg Moore Ask me about lily, an RPI based CMC. |
#13
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Progress fails to dock with ISS
On 7/2/2010 2:46 PM, Rick Jones wrote:
In sci.space.history Pat wrote: On 7/2/2010 10:37 AM, Rick Jones wrote: Space.com's article claims it "veered out of control" It's now apparently drifting away from the station while slowly spinning. Not unlike Frank Poole?-) Oh joy - so it is on the verge of being a big honking peice of space junk. With an orbit not far from that of the ISS. If that's the case it will have to be liquidated, or sent into a "Gulag Orbit" until it reenters. For a real laugh, get ready to meet the Argon-16 Soyuz-Progress computer, which uses magnetic core memory...you know, all the little iron donuts on the wire grid: http://www.computer-museum.ru/english/argon16.htm NASA had started getting past this technology by the time Apollo 7 flew. Imagine for a second if your PC had the computing power of a good electronic calculator...and weighed over 150 pounds. HAL would have been around the size of the Mall Of America. :-D Pat |
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Progress fails to dock with ISS
On Jul 2, 12:37*pm, Rick Jones wrote:
What is the antonym for progress?-) Regress, regression, or reaction, depending on the contextual meaning. John Savard |
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Progress fails to dock with ISS
On Jul 2, 11:07*pm, Pat Flannery wrote:
For a real laugh, get ready to meet the Argon-16 Soyuz-Progress computer, which uses magnetic core memory...you know, all the little iron donuts on the wire grid: I followed the link, and could not find a mention that it used core memory in its RAM modules. This would not surprise me, though, since the unit was designed in 1974. And, given the effect of alpha particles on man-in-the-moon marigolds... oh, sorry, dynamic RAM chips, I'm not even sure if that particular technology is inappropriate for use in the space environment. Even if the limited computing power of a computer built from small- scale integrated circuits would hobble spaceship design. I believe that Russia does have the technology to produce radiation- hardened large-scale integrated circuits, both DRAM and microprocessors, since it would be difficult for me to believe that the GLONASS satellites relied on the early level of computing technology exhibited by this device. Perhaps this older technology is only used for safety-critical systems, or Russia still does not wish the Americans to see their latest technology. John Savard |
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Progress fails to dock with ISS
On 7/2/2010 9:07 PM, Pat Flannery wrote:
Imagine for a second if your PC had the computing power of a good electronic calculator...and weighed over 150 pounds. What makes that really hilarious is that using present technology that thing would be around the size and weight of a cellphone, 3+ orders of magnitude faster, have around 10,000 times more memory, run off of a couple of AAA batteries,and cost around $10 to mass produce. Any problems with cosmic rays or solar storms screwing up its memory could be defeated by sealing the whole works inside of a inch-thick block of lead, reducing its overall mass by around 95%. Pat |
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Progress fails to dock with ISS
On Jul 2, 11:38*pm, Pat Flannery wrote:
Any problems with cosmic rays or solar storms screwing up its memory could be defeated by sealing the whole works inside of a inch-thick block of lead, reducing its overall mass by around 95%. Actually, no. Because cosmic rays give rise to secondary radiation, you are probably looking at a *foot-thick* block of lead. John Savard |
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Progress fails to dock with ISS
On 7/2/2010 6:38 PM, Greg D. Moore (Strider) wrote:
The real question is where is Jim Oberg. I imagine he's presently checking up on the specifics of the situation so he can write a article about it. Let's face it...figuring out what _really_ is going on versus the Russian statements about what is going on is like trying to decipher the Dead Sea Scrolls. It takes a few days. Pat |
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Progress fails to dock with ISS
On 7/2/2010 6:48 PM, Scott Stevenson wrote:
What is the antonym for progress?-) That would be Congress... Be careful what you wish for, Glenn Beck warns us about anything "Progressive" in Congress. Meanwhile, back at National Review, Deroy Murdock hits the ceiling about "Creeping Florescent" bulbs and our God-given right to spend as much money on lighting as we damn-well want: http://article.nationalreview.com/43.../deroy-murdock Those bulbs have allowed me to light my entire apartment on around 1/4 of the total former electrical use for around five years now, and made up their purchase cost inside of around two month's time. Still, we must realize that when incandescent bulbs are outlawed, only outlaws will have incandescent bulbs. ;-) Pat |
#20
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Progress fails to dock with ISS
On 7/2/2010 7:19 PM, Greg D. Moore (Strider) wrote:
And during those 25 minutes, what was the crew doing? Keeping a very careful eye on the thing, and getting ready to flee into the Soyuz lifeboats if it looked like it was about to hit them. :-D I like the Russian statement about nothing critical being aboard the Progress that is needed for the ISS. If that's the case, then why launch it at all? In case it can't dock, keep an eye on ISS altitude he http://www.heavens-above.com/IssHeig...alt=0&t z=CET Because at some point it gets so low that a boost mission can't get it up to a high orbit again by defeating atmospheric drag. Pat |
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