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	<title>Comments on: More on the Adams/Olson letter</title>
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	<description>Because sometimes the most important orbit is the Beltway...</description>
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		<title>By: vulture4</title>
		<link>http://www.spacepolitics.com/2011/03/22/more-on-the-adamsolson-letter/#comment-342607</link>
		<dc:creator><![CDATA[vulture4]]></dc:creator>
		<pubDate>Sat, 26 Mar 2011 04:11:50 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4542#comment-342607</guid>
		<description><![CDATA[You really have to walk the SRB refurb line to understand what it takes to refly an aerospace vehicle that has landed in salt water. The SRBs are disassembled to the component level, each part has to have the plating removed with abrasive blasting, then each part is magnafluxed, replated, and reassembled. When the recovery costs are included, I do not know of any analysis showing that reuse is cost effective. Even for target drones, which were once recovered at sea by parachute, re-use was extremely expensive and this approach has pretty much been abandoned in favor of drones like the QF-102 that can land on a runway. That may be why SpaceX is moving to land recovery as soon as they can, with controlled deceleration with liquid-fueled braking rockets.]]></description>
		<content:encoded><![CDATA[<p>You really have to walk the SRB refurb line to understand what it takes to refly an aerospace vehicle that has landed in salt water. The SRBs are disassembled to the component level, each part has to have the plating removed with abrasive blasting, then each part is magnafluxed, replated, and reassembled. When the recovery costs are included, I do not know of any analysis showing that reuse is cost effective. Even for target drones, which were once recovered at sea by parachute, re-use was extremely expensive and this approach has pretty much been abandoned in favor of drones like the QF-102 that can land on a runway. That may be why SpaceX is moving to land recovery as soon as they can, with controlled deceleration with liquid-fueled braking rockets.</p>
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		<title>By: Martijn Meijering</title>
		<link>http://www.spacepolitics.com/2011/03/22/more-on-the-adamsolson-letter/#comment-342514</link>
		<dc:creator><![CDATA[Martijn Meijering]]></dc:creator>
		<pubDate>Thu, 24 Mar 2011 17:23:35 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4542#comment-342514</guid>
		<description><![CDATA[&lt;i&gt;Or, wait for the means to refuel the thing in LEO, previously supplied by any number of existing launchers.. Thereâ€™s your additional delta-v without developing a new HLVâ€¦&lt;/i&gt;

An excellent idea, but with EOR you can also do it without refueling, which could be a useful capability long &lt;i&gt;before&lt;/i&gt; we have refueling of EDSs.

&lt;i&gt;Today, we can afford to be patient. Good and cheap, rather than good and fast.&lt;/i&gt;

We certainly could and that would be one good option. But we don&#039;t have to wait, we can have good, cheap and fast too. There&#039;s a widespread belief that the choice is between the combination of rapid exploration with a government HLV on the one hand and lots of research and development and delayed exploration if you go commercial. This is a misperception.

First of all it is unclear the government HLV would actually be faster (or whether it will even fly), but secondly use of commercial launch vehicles does not  require lots of R&amp;D even if you did want to do exploration soon. In fact the soonest way to do exploration that I know of does not require lots of R&amp;D and would be faster than both a government HLV and a program that starts with years of R&amp;D. The fastest way to both commercial development of space and exploration does not lead through HLVs nor does it require lots of R&amp;D up front. 

It is only when you want to serve certain economic or political special interests that HLVs and large R&amp;D programs emerge. Unfortunately politics is inevitable, but it is still harmful and reduces what can be accomplished. An HLV would be much, much more harmful than an R&amp;D program and some good could even come from the latter, but it would still lead to inefficiencies and delays, both of which ought to be minimised.]]></description>
		<content:encoded><![CDATA[<p><i>Or, wait for the means to refuel the thing in LEO, previously supplied by any number of existing launchers.. Thereâ€™s your additional delta-v without developing a new HLVâ€¦</i></p>
<p>An excellent idea, but with EOR you can also do it without refueling, which could be a useful capability long <i>before</i> we have refueling of EDSs.</p>
<p><i>Today, we can afford to be patient. Good and cheap, rather than good and fast.</i></p>
<p>We certainly could and that would be one good option. But we don&#8217;t have to wait, we can have good, cheap and fast too. There&#8217;s a widespread belief that the choice is between the combination of rapid exploration with a government HLV on the one hand and lots of research and development and delayed exploration if you go commercial. This is a misperception.</p>
<p>First of all it is unclear the government HLV would actually be faster (or whether it will even fly), but secondly use of commercial launch vehicles does not  require lots of R&amp;D even if you did want to do exploration soon. In fact the soonest way to do exploration that I know of does not require lots of R&amp;D and would be faster than both a government HLV and a program that starts with years of R&amp;D. The fastest way to both commercial development of space and exploration does not lead through HLVs nor does it require lots of R&amp;D up front. </p>
<p>It is only when you want to serve certain economic or political special interests that HLVs and large R&amp;D programs emerge. Unfortunately politics is inevitable, but it is still harmful and reduces what can be accomplished. An HLV would be much, much more harmful than an R&amp;D program and some good could even come from the latter, but it would still lead to inefficiencies and delays, both of which ought to be minimised.</p>
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		<title>By: Egad</title>
		<link>http://www.spacepolitics.com/2011/03/22/more-on-the-adamsolson-letter/#comment-342511</link>
		<dc:creator><![CDATA[Egad]]></dc:creator>
		<pubDate>Thu, 24 Mar 2011 15:53:34 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4542#comment-342511</guid>
		<description><![CDATA[pathfinder_01 wrote 

&gt; No the Ares 1 problems(under powered rocket) combined with the lunar problems have rendered Orion non reusable. They think they may be able to reuse parts like Apollo and Soyuz but the capsule as a whole is not reusable. 

Thanks. Do you happen to know what specific features now render it non-reusable? Googling shows that in 2008 reusability was still under review, with exposure to &quot;salt fog&quot; during water landing (not the &quot;tremendous forces [of] lift-off and reentry&quot;) being a concern.

http://www.flightglobal.com/articles/2008/06/23/224757/orion-reusability-remains-elusive-for-nasa.html]]></description>
		<content:encoded><![CDATA[<p>pathfinder_01 wrote </p>
<p>&gt; No the Ares 1 problems(under powered rocket) combined with the lunar problems have rendered Orion non reusable. They think they may be able to reuse parts like Apollo and Soyuz but the capsule as a whole is not reusable. </p>
<p>Thanks. Do you happen to know what specific features now render it non-reusable? Googling shows that in 2008 reusability was still under review, with exposure to &#8220;salt fog&#8221; during water landing (not the &#8220;tremendous forces [of] lift-off and reentry&#8221;) being a concern.</p>
<p><a href="http://www.flightglobal.com/articles/2008/06/23/224757/orion-reusability-remains-elusive-for-nasa.html" rel="nofollow">http://www.flightglobal.com/articles/2008/06/23/224757/orion-reusability-remains-elusive-for-nasa.html</a></p>
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		<title>By: Stephen C. Smith</title>
		<link>http://www.spacepolitics.com/2011/03/22/more-on-the-adamsolson-letter/#comment-342498</link>
		<dc:creator><![CDATA[Stephen C. Smith]]></dc:creator>
		<pubDate>Thu, 24 Mar 2011 11:53:19 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4542#comment-342498</guid>
		<description><![CDATA[&lt;a href=&quot;http://www.floridatoday.com/article/20110324/OPINION/110323017&quot; rel=&quot;nofollow&quot;&gt;&lt;cite&gt;Florida Today&lt;/cite&gt; published a blunt editorial this morning&lt;/a&gt; which seems to be an implicit rebuke to the false claims in Rep. Adams&#039; March 17 letter.  The editorial states:

&lt;i&gt;In the hyper-partisan climate in Congress, the announcement brought familiar criticism from Republicans that the Obama administration is ceding U.S. human spaceflight to Russia.

Thatâ€™s far from the truth.

President Bush made the call to fly U.S. astronauts aboard Russian rockets as part of his decision in 2004 to end the shuttle program in 2010 without having a new American rocket ready to replace the orbiters.

The move was supported by Republicans who then controlled Congress and Democrats backed it, too, when they took over in 2006. When President Obama entered the White House in 2009, the shuttle&#039;s shutdown was well under way and the Russian policy long set.

The rhetoric accomplishes nothing, further poisoning the atmosphere when level-headed bipartisan leadership is necessary to steer NASA through the post-shuttle transition.&lt;/i&gt;]]></description>
		<content:encoded><![CDATA[<p><a href="http://www.floridatoday.com/article/20110324/OPINION/110323017" rel="nofollow"><cite>Florida Today</cite> published a blunt editorial this morning</a> which seems to be an implicit rebuke to the false claims in Rep. Adams&#8217; March 17 letter.  The editorial states:</p>
<p><i>In the hyper-partisan climate in Congress, the announcement brought familiar criticism from Republicans that the Obama administration is ceding U.S. human spaceflight to Russia.</p>
<p>Thatâ€™s far from the truth.</p>
<p>President Bush made the call to fly U.S. astronauts aboard Russian rockets as part of his decision in 2004 to end the shuttle program in 2010 without having a new American rocket ready to replace the orbiters.</p>
<p>The move was supported by Republicans who then controlled Congress and Democrats backed it, too, when they took over in 2006. When President Obama entered the White House in 2009, the shuttle&#8217;s shutdown was well under way and the Russian policy long set.</p>
<p>The rhetoric accomplishes nothing, further poisoning the atmosphere when level-headed bipartisan leadership is necessary to steer NASA through the post-shuttle transition.</i></p>
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		<title>By: Chris Castro</title>
		<link>http://www.spacepolitics.com/2011/03/22/more-on-the-adamsolson-letter/#comment-342494</link>
		<dc:creator><![CDATA[Chris Castro]]></dc:creator>
		<pubDate>Thu, 24 Mar 2011 06:05:04 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4542#comment-342494</guid>
		<description><![CDATA[@Stephen C. Smith;....THAT IS JUST ANOTHER IGNORANT STATEMENT from the &quot;Anywhere-but-the-Moon&quot; types!  True exploration is NOT about reaching a destination once and then abandoning it forever, as the Planetary Society, Buzz Aldrin, and other ignoramuses appear to believe. There would be No bases in the Antarctic, to this day, if the goal was only to get a team of explorers there, just for the one-time bragging rights &amp; photo ops, then to declare that there&#039;s nothing further to ever be done down there ever again; so let&#039;s never go back, folks! There are bases, more extensive scientific investigation, and mineral exploitation that still should be done, in a second round of manned missions there---to the Moon. And to get this &quot;repeating-the-past&quot; protest into perspective: I say, SO WHAT, if Commercial Space should happen to succeed at &quot;repeating&quot; John Glenn&#039;s 1962 spaceflight, using one of their entrepreneur capsules! SO WHAT if the Dragon successfully orbits a one or two man crew, in this decade!----They will &quot;only&quot; be repeating the acheivements of the Mercury and/or the Gemini Programs!!]]></description>
		<content:encoded><![CDATA[<p>@Stephen C. Smith;&#8230;.THAT IS JUST ANOTHER IGNORANT STATEMENT from the &#8220;Anywhere-but-the-Moon&#8221; types!  True exploration is NOT about reaching a destination once and then abandoning it forever, as the Planetary Society, Buzz Aldrin, and other ignoramuses appear to believe. There would be No bases in the Antarctic, to this day, if the goal was only to get a team of explorers there, just for the one-time bragging rights &amp; photo ops, then to declare that there&#8217;s nothing further to ever be done down there ever again; so let&#8217;s never go back, folks! There are bases, more extensive scientific investigation, and mineral exploitation that still should be done, in a second round of manned missions there&#8212;to the Moon. And to get this &#8220;repeating-the-past&#8221; protest into perspective: I say, SO WHAT, if Commercial Space should happen to succeed at &#8220;repeating&#8221; John Glenn&#8217;s 1962 spaceflight, using one of their entrepreneur capsules! SO WHAT if the Dragon successfully orbits a one or two man crew, in this decade!&#8212;-They will &#8220;only&#8221; be repeating the acheivements of the Mercury and/or the Gemini Programs!!</p>
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		<title>By: pathfinder_01</title>
		<link>http://www.spacepolitics.com/2011/03/22/more-on-the-adamsolson-letter/#comment-342489</link>
		<dc:creator><![CDATA[pathfinder_01]]></dc:creator>
		<pubDate>Thu, 24 Mar 2011 02:58:43 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4542#comment-342489</guid>
		<description><![CDATA[Egad

No the Ares 1 problems(under powered rocket) combined with the lunar problems have rendered Orion non reusable. They think they may be able to reuse parts like Apollo and Soyuz but the capsule as a whole is not reusable. 

sftomy 

Or just send Orion to L1/L2 and exchange into a lander there. Note Apollo&#039;s lander massed 14MT.  14MT is a little more than what Delta can throw to L1/L2 in a single shot so a either 2 flights or a slight upgrade to delta could help here. There could also be a cost savings as Atlas could lift 14MT to LEO instead of the more expensive delta. 

Another point was ULA idea of using a crogenic service module. This could reduce the mass of Orion greatly since Crygenic propellants have more ISP than hypergolic ones and can result in lower mass spacecraft. CXP was going to try to do it with LOX /Methane but decided to drop it early on.]]></description>
		<content:encoded><![CDATA[<p>Egad</p>
<p>No the Ares 1 problems(under powered rocket) combined with the lunar problems have rendered Orion non reusable. They think they may be able to reuse parts like Apollo and Soyuz but the capsule as a whole is not reusable. </p>
<p>sftomy </p>
<p>Or just send Orion to L1/L2 and exchange into a lander there. Note Apollo&#8217;s lander massed 14MT.  14MT is a little more than what Delta can throw to L1/L2 in a single shot so a either 2 flights or a slight upgrade to delta could help here. There could also be a cost savings as Atlas could lift 14MT to LEO instead of the more expensive delta. </p>
<p>Another point was ULA idea of using a crogenic service module. This could reduce the mass of Orion greatly since Crygenic propellants have more ISP than hypergolic ones and can result in lower mass spacecraft. CXP was going to try to do it with LOX /Methane but decided to drop it early on.</p>
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		<title>By: Frank Glover</title>
		<link>http://www.spacepolitics.com/2011/03/22/more-on-the-adamsolson-letter/#comment-342481</link>
		<dc:creator><![CDATA[Frank Glover]]></dc:creator>
		<pubDate>Thu, 24 Mar 2011 00:46:03 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4542#comment-342481</guid>
		<description><![CDATA[&quot;So a Delta IV Heavy could put the Orion capsule (weight 8,913 kg) in Lunar Transfer Orbit, but wouldnâ€™t have the umph to put the service module there-even if they could be sent separately. (assuming a Delta IV capability of putting 9,984 Kg in LTO versus a Service module weighing 12,337 kg)

So the moon must wait for a heavy lift unless commercial, Bigelow for instance, gets there first with smaller cheaper on the Delta IV.&quot;

Or, wait for the means to refuel the thing in LEO, previously supplied by any number of existing launchers.. There&#039;s your additional delta-v without developing a new HLV...

Apollo did entire missions in one launch, so as to reach the Moon &#039;before the decade is out,&#039; and before the Soviets, whichever came first. EOR was judged to take too long to develop to met that constraint.

Today, we can afford to be patient. Good and cheap, rather than good and fast.]]></description>
		<content:encoded><![CDATA[<p>&#8220;So a Delta IV Heavy could put the Orion capsule (weight 8,913 kg) in Lunar Transfer Orbit, but wouldnâ€™t have the umph to put the service module there-even if they could be sent separately. (assuming a Delta IV capability of putting 9,984 Kg in LTO versus a Service module weighing 12,337 kg)</p>
<p>So the moon must wait for a heavy lift unless commercial, Bigelow for instance, gets there first with smaller cheaper on the Delta IV.&#8221;</p>
<p>Or, wait for the means to refuel the thing in LEO, previously supplied by any number of existing launchers.. There&#8217;s your additional delta-v without developing a new HLV&#8230;</p>
<p>Apollo did entire missions in one launch, so as to reach the Moon &#8216;before the decade is out,&#8217; and before the Soviets, whichever came first. EOR was judged to take too long to develop to met that constraint.</p>
<p>Today, we can afford to be patient. Good and cheap, rather than good and fast.</p>
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		<title>By: DCSCA</title>
		<link>http://www.spacepolitics.com/2011/03/22/more-on-the-adamsolson-letter/#comment-342480</link>
		<dc:creator><![CDATA[DCSCA]]></dc:creator>
		<pubDate>Thu, 24 Mar 2011 00:30:28 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4542#comment-342480</guid>
		<description><![CDATA[@Stephen C. Smith wrote @ March 23rd, 2011 at 8:33 am 
Chris Castro wrote:

Ten years from now, I would like to see American astronauts LEAVE low earth orbit, at long last, and depart for the Moon! 

Go to Google and look up â€œApollo.â€ We did that over 40 years ago.&quot;

So? Go to Google and look up &#039;Wright Brothers.&#039; &#039;We&#039; did that over a century ago.  The goal for this century (and there&#039;s just 89 years left in it already) is to go back to the moon to stay, establish a permanent base- then press on outward. The clock is tickin&#039;. Oh yes, and as the first quarer of 2011 comes to a close, still no commerical firm has launched, orbited and returned a crew safely. Google that... Tick-tock.]]></description>
		<content:encoded><![CDATA[<p>@Stephen C. Smith wrote @ March 23rd, 2011 at 8:33 am<br />
Chris Castro wrote:</p>
<p>Ten years from now, I would like to see American astronauts LEAVE low earth orbit, at long last, and depart for the Moon! </p>
<p>Go to Google and look up â€œApollo.â€ We did that over 40 years ago.&#8221;</p>
<p>So? Go to Google and look up &#8216;Wright Brothers.&#8217; &#8216;We&#8217; did that over a century ago.  The goal for this century (and there&#8217;s just 89 years left in it already) is to go back to the moon to stay, establish a permanent base- then press on outward. The clock is tickin&#8217;. Oh yes, and as the first quarer of 2011 comes to a close, still no commerical firm has launched, orbited and returned a crew safely. Google that&#8230; Tick-tock.</p>
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		<title>By: Ferris Valyn</title>
		<link>http://www.spacepolitics.com/2011/03/22/more-on-the-adamsolson-letter/#comment-342478</link>
		<dc:creator><![CDATA[Ferris Valyn]]></dc:creator>
		<pubDate>Wed, 23 Mar 2011 23:51:20 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4542#comment-342478</guid>
		<description><![CDATA[&lt;blockquote&gt;I gave it all to you and you donâ€™t want it. You can lead a horse to waterâ€¦..&lt;/blockquote&gt;

No, actually, you didn&#039;t give anything

You pontificated, but you haven&#039;t ever been prepared to fight for your idea.  

If you are so sure its right, why don&#039;t you go to Congress &amp; lobby them, instead of complaining here?  That would actually have a practical purpose.]]></description>
		<content:encoded><![CDATA[<blockquote><p>I gave it all to you and you donâ€™t want it. You can lead a horse to waterâ€¦..</p></blockquote>
<p>No, actually, you didn&#8217;t give anything</p>
<p>You pontificated, but you haven&#8217;t ever been prepared to fight for your idea.  </p>
<p>If you are so sure its right, why don&#8217;t you go to Congress &amp; lobby them, instead of complaining here?  That would actually have a practical purpose.</p>
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		<title>By: Rand Simberg</title>
		<link>http://www.spacepolitics.com/2011/03/22/more-on-the-adamsolson-letter/#comment-342470</link>
		<dc:creator><![CDATA[Rand Simberg]]></dc:creator>
		<pubDate>Wed, 23 Mar 2011 22:13:24 +0000</pubDate>
		<guid isPermaLink="false">http://www.spacepolitics.com/?p=4542#comment-342470</guid>
		<description><![CDATA[&lt;em&gt;I gave it all to you and you donâ€™t want it.&lt;/em&gt;

No, you gave us a nightmare, that will cost billions per flight.]]></description>
		<content:encoded><![CDATA[<p><em>I gave it all to you and you donâ€™t want it.</em></p>
<p>No, you gave us a nightmare, that will cost billions per flight.</p>
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