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	<title>Comments on: NASA&#8217;s top challenges</title>
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	<link>http://www.spacepolitics.com/2010/11/17/nasas-top-challenges/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=nasas-top-challenges</link>
	<description>Because sometimes the most important orbit is the Beltway...</description>
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		<title>By: Byeman</title>
		<link>http://www.spacepolitics.com/2010/11/17/nasas-top-challenges/#comment-333477</link>
		<dc:creator><![CDATA[Byeman]]></dc:creator>
		<pubDate>Mon, 22 Nov 2010 01:28:55 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4117#comment-333477</guid>
		<description><![CDATA[Forgot to add SLC-3 and SLC-6.  The only pads &quot;owned&quot; by the USG are SLC-2 and 17 which are for Delta II, which soon will be deactivated.  And LC-39.]]></description>
		<content:encoded><![CDATA[<p>Forgot to add SLC-3 and SLC-6.  The only pads &#8220;owned&#8221; by the USG are SLC-2 and 17 which are for Delta II, which soon will be deactivated.  And LC-39.</p>
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		<title>By: Byeman</title>
		<link>http://www.spacepolitics.com/2010/11/17/nasas-top-challenges/#comment-333476</link>
		<dc:creator><![CDATA[Byeman]]></dc:creator>
		<pubDate>Mon, 22 Nov 2010 01:26:36 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4117#comment-333476</guid>
		<description><![CDATA[&quot;Last time the taxpayers checked, the facilities used to â€˜loft payloadsâ€™ are O/O by the United States government&quot;

Let&#039;s be more direct, DCSCA is flaunting his ignorance as usual.

The facilities on SLC-37, SLC-41 and SLC-40 are owned and operated by ULA or Spacex.  The US Gov&#039;t is not involved with the O&amp;M of these facilities.

Know something before posting.]]></description>
		<content:encoded><![CDATA[<p>&#8220;Last time the taxpayers checked, the facilities used to â€˜loft payloadsâ€™ are O/O by the United States government&#8221;</p>
<p>Let&#8217;s be more direct, DCSCA is flaunting his ignorance as usual.</p>
<p>The facilities on SLC-37, SLC-41 and SLC-40 are owned and operated by ULA or Spacex.  The US Gov&#8217;t is not involved with the O&amp;M of these facilities.</p>
<p>Know something before posting.</p>
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		<title>By: Rand Simberg</title>
		<link>http://www.spacepolitics.com/2010/11/17/nasas-top-challenges/#comment-333423</link>
		<dc:creator><![CDATA[Rand Simberg]]></dc:creator>
		<pubDate>Sun, 21 Nov 2010 16:06:27 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4117#comment-333423</guid>
		<description><![CDATA[&lt;em&gt;the facilities used to â€˜loft payloadsâ€™ are O/O by the United States government under the guise of NASA and assorted DoD monikers.&lt;/em&gt;

Facilities don&#039;t &quot;loft payloads.&quot;  Launch vehicles do.  Get a clue.]]></description>
		<content:encoded><![CDATA[<p><em>the facilities used to â€˜loft payloadsâ€™ are O/O by the United States government under the guise of NASA and assorted DoD monikers.</em></p>
<p>Facilities don&#8217;t &#8220;loft payloads.&#8221;  Launch vehicles do.  Get a clue.</p>
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		<title>By: DCSCA</title>
		<link>http://www.spacepolitics.com/2010/11/17/nasas-top-challenges/#comment-333382</link>
		<dc:creator><![CDATA[DCSCA]]></dc:creator>
		<pubDate>Sun, 21 Nov 2010 00:43:47 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4117#comment-333382</guid>
		<description><![CDATA[@Rand Simberg wrote @ November 20th, 2010 at 4:48 pm 

Last time the taxpayers checked, the facilities used to &#039;loft payloads&#039; are O/O by the United States government under the guise of NASA and assorted DoD monikers. Guess places like Vandenberg and other DoD  launch platforms, including submarines BTW,  escaped your broad-based thinking. Perhaps there&#039;s a USS Musk submerged off Florida we don&#039;t know about. Ignorance, indeed, Simberg. Good grief.]]></description>
		<content:encoded><![CDATA[<p>@Rand Simberg wrote @ November 20th, 2010 at 4:48 pm </p>
<p>Last time the taxpayers checked, the facilities used to &#8216;loft payloads&#8217; are O/O by the United States government under the guise of NASA and assorted DoD monikers. Guess places like Vandenberg and other DoD  launch platforms, including submarines BTW,  escaped your broad-based thinking. Perhaps there&#8217;s a USS Musk submerged off Florida we don&#8217;t know about. Ignorance, indeed, Simberg. Good grief.</p>
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		<title>By: Rand Simberg</title>
		<link>http://www.spacepolitics.com/2010/11/17/nasas-top-challenges/#comment-333372</link>
		<dc:creator><![CDATA[Rand Simberg]]></dc:creator>
		<pubDate>Sat, 20 Nov 2010 21:48:03 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4117#comment-333372</guid>
		<description><![CDATA[&lt;em&gt;Thereâ€™s little difference if a payload is lofted by the military or by NASA.&lt;/em&gt;

Neither NASA nor the military &quot;loft payloads&quot; (other than the last couple Shuttle flights).  All US payloads, military and NASA, are launched commercially.  Someone else flaunting his ignorance.]]></description>
		<content:encoded><![CDATA[<p><em>Thereâ€™s little difference if a payload is lofted by the military or by NASA.</em></p>
<p>Neither NASA nor the military &#8220;loft payloads&#8221; (other than the last couple Shuttle flights).  All US payloads, military and NASA, are launched commercially.  Someone else flaunting his ignorance.</p>
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		<title>By: DCSCA</title>
		<link>http://www.spacepolitics.com/2010/11/17/nasas-top-challenges/#comment-333264</link>
		<dc:creator><![CDATA[DCSCA]]></dc:creator>
		<pubDate>Fri, 19 Nov 2010 21:10:25 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4117#comment-333264</guid>
		<description><![CDATA[@Byeman wrote @ November 18th, 2010 at 5:34 pm

It&#039;s understandable why you&#039;re desperate to protect your turf. But you best review what NASA actually does. We know the other things NASA does but to most Americans, its the government agency that &#039;sent Glenn to the moon&#039; and &#039;invented Tang&#039;-- and NASA did neither. Get out of your bubble. The Age of austerity is here.  Pretty much all of it can be done by other agencies. A 40% cut in staff is generous but dissolving the agency as an independent orgasnization and tucking it under the &#039;umbrella&#039; of the DoD might actually save longer term space projects under the guise of &#039;national security.&#039; As it stands now, NASA is quite vulnerable to being essentially eliminated. The duplication of personnel, projects, facilities, etc., make it an easy target. There&#039;s little difference if a payload is lofted by the military or by NASA. The United States simply cannot afford two space programs any longer. And the easiest one to eliminate is NASA.]]></description>
		<content:encoded><![CDATA[<p>@Byeman wrote @ November 18th, 2010 at 5:34 pm</p>
<p>It&#8217;s understandable why you&#8217;re desperate to protect your turf. But you best review what NASA actually does. We know the other things NASA does but to most Americans, its the government agency that &#8216;sent Glenn to the moon&#8217; and &#8216;invented Tang&#8217;&#8211; and NASA did neither. Get out of your bubble. The Age of austerity is here.  Pretty much all of it can be done by other agencies. A 40% cut in staff is generous but dissolving the agency as an independent orgasnization and tucking it under the &#8216;umbrella&#8217; of the DoD might actually save longer term space projects under the guise of &#8216;national security.&#8217; As it stands now, NASA is quite vulnerable to being essentially eliminated. The duplication of personnel, projects, facilities, etc., make it an easy target. There&#8217;s little difference if a payload is lofted by the military or by NASA. The United States simply cannot afford two space programs any longer. And the easiest one to eliminate is NASA.</p>
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		<title>By: Rand Simberg</title>
		<link>http://www.spacepolitics.com/2010/11/17/nasas-top-challenges/#comment-333246</link>
		<dc:creator><![CDATA[Rand Simberg]]></dc:creator>
		<pubDate>Fri, 19 Nov 2010 20:43:07 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4117#comment-333246</guid>
		<description><![CDATA[&lt;em&gt;With the pusher escape system and it not having to be jettisoned after launch, is it then used in space as breaking rockets for re-entry, or manuvering to different orbits?&lt;/em&gt;

That&#039;s the plan for Boeing&#039;s CST.  It&#039;s not clear whether that will be the case for Dragon yet.

&lt;em&gt;â€œJettisoning somethingâ€ increase complexity which reduces reliability. Eliminating such an event reduces risk.&lt;/em&gt;

Yes.  The Orion LAS had over sixty identified hazards, over half of which could kill you on an otherwise nominal mission (e.g., failure to jettison).  It also was one of the factors that led to the out-of-control weight growth that required the extra segment in the SRB.

And once again MichaelC flaunts his ignorance.]]></description>
		<content:encoded><![CDATA[<p><em>With the pusher escape system and it not having to be jettisoned after launch, is it then used in space as breaking rockets for re-entry, or manuvering to different orbits?</em></p>
<p>That&#8217;s the plan for Boeing&#8217;s CST.  It&#8217;s not clear whether that will be the case for Dragon yet.</p>
<p><em>â€œJettisoning somethingâ€ increase complexity which reduces reliability. Eliminating such an event reduces risk.</em></p>
<p>Yes.  The Orion LAS had over sixty identified hazards, over half of which could kill you on an otherwise nominal mission (e.g., failure to jettison).  It also was one of the factors that led to the out-of-control weight growth that required the extra segment in the SRB.</p>
<p>And once again MichaelC flaunts his ignorance.</p>
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		<title>By: Martijn Meijering</title>
		<link>http://www.spacepolitics.com/2010/11/17/nasas-top-challenges/#comment-333243</link>
		<dc:creator><![CDATA[Martijn Meijering]]></dc:creator>
		<pubDate>Fri, 19 Nov 2010 20:23:59 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4117#comment-333243</guid>
		<description><![CDATA[&lt;i&gt;carrying around explosive fuel when it is not needed does.&lt;/i&gt;

The fuel is neither explosive (hypergolics, which don&#039;t mix well and therefore don&#039;t explode well) nor is it unneeded: it would be used for circularisation and deorbit and maybe even for a bit of deceleration / steering during final descent. It could also be reused.]]></description>
		<content:encoded><![CDATA[<p><i>carrying around explosive fuel when it is not needed does.</i></p>
<p>The fuel is neither explosive (hypergolics, which don&#8217;t mix well and therefore don&#8217;t explode well) nor is it unneeded: it would be used for circularisation and deorbit and maybe even for a bit of deceleration / steering during final descent. It could also be reused.</p>
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		<title>By: byeman</title>
		<link>http://www.spacepolitics.com/2010/11/17/nasas-top-challenges/#comment-333242</link>
		<dc:creator><![CDATA[byeman]]></dc:creator>
		<pubDate>Fri, 19 Nov 2010 20:22:42 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4117#comment-333242</guid>
		<description><![CDATA[The MLAS was not a test of a true abort system.  There were no &quot;abort&quot; motors in the MLAS.   It was descoped once it was found that it could not prove the concept.  MLAS was no more of a test of an actual abort than Ares I-X was of an actual launch vehicle.  Both were more for show than substance.]]></description>
		<content:encoded><![CDATA[<p>The MLAS was not a test of a true abort system.  There were no &#8220;abort&#8221; motors in the MLAS.   It was descoped once it was found that it could not prove the concept.  MLAS was no more of a test of an actual abort than Ares I-X was of an actual launch vehicle.  Both were more for show than substance.</p>
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		<title>By: Martijn Meijering</title>
		<link>http://www.spacepolitics.com/2010/11/17/nasas-top-challenges/#comment-333241</link>
		<dc:creator><![CDATA[Martijn Meijering]]></dc:creator>
		<pubDate>Fri, 19 Nov 2010 20:19:13 +0000</pubDate>
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		<description><![CDATA[MLAS was in fact a tractor. Byeman explained this to me on NSF.com. It was connected to the top of the capsule and thus would have pulled it.]]></description>
		<content:encoded><![CDATA[<p>MLAS was in fact a tractor. Byeman explained this to me on NSF.com. It was connected to the top of the capsule and thus would have pulled it.</p>
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