[meteorite-list] Watch out for falling metal, guys with sunglasses and dark suits
From: Sterling K. Webb <sterling_k_webb_at_meteoritecentral.com>
Date: Sat, 26 Jan 2008 23:12:56 -0600 Message-ID: <019e01c860a3$476b4fd0$a12f4842_at_ATARIENGINE> Hi, Not to quarrel with so impeccable a news source as The Fox, most of this story does not compute. The "small bus" size (or 64-65 feet) means a KH-11s or KH-12, which weigh 13,000 to 18,000 kilograms (or 30,000 to 40,000 pounds), not "about 20,000 pounds." Much of that weight is propellant, from 11,000 up to 15,000 pounds of it. Such "satellites" are really orbital spacecraft that maneuver from one orbit to another, at widely varying altitudes, eccentricities and orbital ("sun-synchronous") orientations. Such a satellite might weigh "about" 20,000 pounds if its propellant was totally exhausted. Also, its re-entry would not be uncertain if it still had the propellant to inject itself into a proper re-entry orbit configuration and maneuver once in that orbit. So, either one failed and can no longer be controlled or cannot maneuver, or someone kept one up and working, even though they would have known it meant a disastrous re-entry. Or one could have been damaged in orbit by debris. None of these possibilities seem the sort of thing the NSC would so freely blab about. If you're not familiar with the KH-11 or KH-12, just relabel it as the "Hubble Space Telescope," with its 2.3 meter optics. The HST is just a KeyHole with a some custom factory options. The last of the original KH-11's was de-orbited in 1996; they had a three year operational lifetime. The KH-11s or "advanced model" and the KH-12 may have an operational lifetime of up to eight years. And there's the newer KH-13, but I doubt one of them is coming down. In the 1970's, we had two satellites in orbit at a time, replacing them as they were used up. Then, we had four, then six. Hard to say how many might still be up there now. Or, if the weight is accurate, it would have to be an old and much earlier KeyHole, which were all film return satellites. However, since the news story mentions the "risk [of the] exposure of U.S. secrets," requiring protecting our valuable technology by the complete destruction of the satellite, it can't very well mean the old film return satellites, which were about as technologically sophisticated as anything designed in 1963! That is to say, not very. The freely given "leak" of security information and the friendly breezy White House (NSC) confirmation of such a security breach (they're always so chatty!) suggests to me that whatever is falling from orbit in the next few months, the very last thing it's likely to be is an "old photo reconnaisance satellite" (makes it sound like it was a yard-sale Polaroid camera). This just in! 53 minutes ago, from tomorrow's New York Times, more (and quite unofficial) information than Fox News: http://www.nytimes.com/2008/01/27/us/27spy.html?_r=1&adxnnl=1&oref=slogin&ref=us&adxnnlx=1201410051-QMwiKApZXIsGtpj/gpaQ4w "Specialists who follow spy satellite operations suspect it is an experimental imagery satellite built by Lockheed Martin and launched from Vandenberg Air Force Base in California in December 2006 aboard a Delta II rocket. Shortly after the satellite reached orbit, ground controllers lost the ability to control it and were never able to regain communication. Since it was launched, the experimental satellite has been in a slowly decaying orbit. As of Jan. 22, it was moving in a circular orbit at about 275 kilometers above the Earth... In the last month, its orbit has declined by 15 to 20 kilometers... it's now just a matter of weeks before it falls out of orbit." Was it possibly a prototype for the planned "Future Imagery Architecture" digital imaging spacecraft? It is curious that, on the one hand, we cannot afford to maintain or replace the one HST, originally planned to let it spin down, then decided we'd save it one last time, haven't done it yet, but then plan to let it go down in 2013, after which there will no visible light telescope in orbit. While, on the other, we seem to have no objection to the cost of continuing to keep launching, controlling, and maintaining the almost identical and almost as costly KH-12's (at least four of them) and the KH-13's (at least three of them) and a minimum of 10 KH-11's and a minimum of 20 KH-9's, and oh, a number of LACROSSE/VEGA radar "spy" satellites and the network of orbital communications satellites that service and coordinate all of them and... You'd think we could afford ONE visual light telescope in orbit after 2013. Hey, I got an idea! Let's borrow the money for it from the Chinese, like we do for everything else! Sterling K. Webb ----------------------------------------------------------------------- ----- Original Message ----- From: "Darren Garrison" <cynapse at charter.net> To: <Meteorite-list at meteoritecentral.com> Sent: Saturday, January 26, 2008 7:37 PM Subject: [meteorite-list] Watch out for falling metal,guys with sunglasses and dark suits http://www.foxnews.com/story/0,2933,325829,00.html ______________________________________________ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list at meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list Received on Sun 27 Jan 2008 12:12:56 AM PST |
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