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	<title>Project Stratos &#187; Blog</title>
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	<description>Stratos II</description>
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		<title>Hybrid propulsion update</title>
		<link>http://projectstratos.nl/2012/01/hybrid-propulsion-update/</link>
		<comments>http://projectstratos.nl/2012/01/hybrid-propulsion-update/#comments</comments>
		<pubDate>Wed, 11 Jan 2012 23:21:08 +0000</pubDate>
		<dc:creator>Michael</dc:creator>
				<category><![CDATA[Blog]]></category>
		<category><![CDATA[Stratos II hybrid propulsion]]></category>

		<guid isPermaLink="false">http://projectstratos.nl/?p=1116</guid>
		<description><![CDATA[In the past few months the hybrid propulsion group has been working along with other fellow students in a minor at the TU Delft. A minor is a semester during which students can choose to specialize in a field or discover new areas non-related to their field of study. The minor not only allowed more students to discover rocketry but to get closer to a flight ready design. One significant improvement was the design of a vertical test bench with reduced friction and restrains movement in the vertical direction thus allowing for more accurate data gathering and analysis. Further integration [...]]]></description>
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		<title>Solid propellant &#8211; last PTD tests</title>
		<link>http://projectstratos.nl/2012/01/solid-propellant-last-ptd-tests/</link>
		<comments>http://projectstratos.nl/2012/01/solid-propellant-last-ptd-tests/#comments</comments>
		<pubDate>Tue, 10 Jan 2012 18:02:58 +0000</pubDate>
		<dc:creator>Hein</dc:creator>
				<category><![CDATA[Blog]]></category>

		<guid isPermaLink="false">http://projectstratos.nl/?p=1106</guid>
		<description><![CDATA[Today, the solid propulsion group performed their last tests using Pressure Test Devices (PTD). Although there were some problems with the data logger, we may call them a success (see DARE&#8217;s youtube channel: lrdare). The ignition was good, and the burns were very powerful. During the second test, we reached a chamber pressure of 75 Bar. We have sufficient data now to be able to design a solid rocket motor using our ALAN-7 propellant. This is exactly what we are going to do at the start of the new year! The motor will be a large K or small L-class [...]]]></description>
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		<item>
		<title>Solid propulsion update</title>
		<link>http://projectstratos.nl/2011/09/solid-propulsion-update-2/</link>
		<comments>http://projectstratos.nl/2011/09/solid-propulsion-update-2/#comments</comments>
		<pubDate>Wed, 07 Sep 2011 21:44:31 +0000</pubDate>
		<dc:creator>Bryan</dc:creator>
				<category><![CDATA[Blog]]></category>
		<category><![CDATA[Stratos II solid propulsion]]></category>

		<guid isPermaLink="false">http://projectstratos.nl/?p=1048</guid>
		<description><![CDATA[After the successful tests of 16th to 18th of August, it was decided to fire the PTDs (Pressure test devices) just once more, to gather more data points. This was done on Thursday, September 1st. We assembled two core-burning PTDs, with nozzles of 4.1 mm and 5 mm respectively, to obtain Klemmung values of 325 and 220. Both PTDs ignited well, but unfortunately, the safety valve of the first test was activated, due to the high pressure inside the combustion chamber. Next to that, the voltage gain of the data logger was set to a too high value, so that [...]]]></description>
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		<title>Another successful hybrid motor test</title>
		<link>http://projectstratos.nl/2011/05/another-successful-hybrid-motor-test/</link>
		<comments>http://projectstratos.nl/2011/05/another-successful-hybrid-motor-test/#comments</comments>
		<pubDate>Fri, 27 May 2011 16:16:11 +0000</pubDate>
		<dc:creator>Bryan</dc:creator>
				<category><![CDATA[Blog]]></category>
		<category><![CDATA[Stratos II hybrid propulsion]]></category>

		<guid isPermaLink="false">http://projectstratos.nl/?p=1013</guid>
		<description><![CDATA[Last Friday, the 20th of May, the hybrid propulsion group had three successful system tests of the hybrid propulsion system under development for Stratos II. The test engine had been redesigned to overcome leakage problems experienced with the previous generation of test motors. The first test using a conventional axial oxidizer injector system ignited successfully and burned for 8 seconds creating remarkable 275 Newton of thrust. The nozzle unfortunately was damaged irreparably, but the rest of the motor stayed intact. The second test featured a swirl injector that was tested earlier. The engine ignited properly but then blew out for [...]]]></description>
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		<title>Not 1 but 2 successful tests on launch day</title>
		<link>http://projectstratos.nl/2011/05/not-1-but-2-successful-test-on-launchday/</link>
		<comments>http://projectstratos.nl/2011/05/not-1-but-2-successful-test-on-launchday/#comments</comments>
		<pubDate>Sun, 15 May 2011 10:20:17 +0000</pubDate>
		<dc:creator>Frank</dc:creator>
				<category><![CDATA[Blog]]></category>

		<guid isPermaLink="false">http://projectstratos.nl/?p=990</guid>
		<description><![CDATA[By Hein Olthof (only uploaded by Frank) On Friday, May 13th 2011, the solid propulsion group reached a great milestone at ASK ‘t Harde: the first rocket powered by an ammonium nitrate rocket propellant was successfully launched. After a year of thorough theoretical studies and testing, it is now proved that the newly designed ALAN-7 propellant has the potential to reach its most important requirement: delivering enough thrust to lift a rocket out of the launch tower. After some initial burn tests under atmospheric conditions, the solid propulsion group was confident that the ALAN-7 propellant had all the necessary characteristics [...]]]></description>
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		<slash:comments>1</slash:comments>
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		<title>The story of the launchday</title>
		<link>http://projectstratos.nl/2011/05/the-story-of-the-launchday/</link>
		<comments>http://projectstratos.nl/2011/05/the-story-of-the-launchday/#comments</comments>
		<pubDate>Fri, 13 May 2011 20:13:03 +0000</pubDate>
		<dc:creator>Frank</dc:creator>
				<category><![CDATA[Blog]]></category>
		<category><![CDATA[Stratos II capsule]]></category>

		<guid isPermaLink="false">http://projectstratos.nl/?p=975</guid>
		<description><![CDATA[We are tired, but satisfied enjoying our pizza and beer. We are processing the video footage and are almost ready to upload. At 22:30 we are going to watch &#8220;Hart van Nederland&#8221; which is a national television program. They joined us almost the whole day and made an item about the launch. So the story of our launch. Yesterday we thought to be almost ready, though some small problems kept the concept launcher crew up till 1:30&#8230; For us the launch day started at 8:30, when we arrived at the launch site. Almost directly Wouter&#8217;s phone started to ring. The [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<title>T-minus 60 hours</title>
		<link>http://projectstratos.nl/2011/05/t-minus-60-hours-the-tudelft-published-a-press-release-about-us/</link>
		<comments>http://projectstratos.nl/2011/05/t-minus-60-hours-the-tudelft-published-a-press-release-about-us/#comments</comments>
		<pubDate>Tue, 10 May 2011 23:26:19 +0000</pubDate>
		<dc:creator>Frank</dc:creator>
				<category><![CDATA[Blog]]></category>

		<guid isPermaLink="false">http://projectstratos.nl/?p=925</guid>
		<description><![CDATA[The end of Tuesday.  There were two main themes today. Finalizing the concept launcher and the TU Delft press release. So first what did we do with the concept launcher? We put 6 kg of lead in the capsule, so instead of 9 kg it weighs 15 kg right now. Normally you take such drastic measures when there are serious problems; we put it in on purpose.  One of the main things we want to learn is whether or not our system is strong enough. At this moment, there are no payloads, the nose cone is not made as strong [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<title>Presenting the Stratos II mission patch</title>
		<link>http://projectstratos.nl/2011/05/presenting-the-stratos-ii-mission-patch/</link>
		<comments>http://projectstratos.nl/2011/05/presenting-the-stratos-ii-mission-patch/#comments</comments>
		<pubDate>Mon, 09 May 2011 13:07:59 +0000</pubDate>
		<dc:creator>Bryan</dc:creator>
				<category><![CDATA[Blog]]></category>
		<category><![CDATA[Stratos II]]></category>
		<category><![CDATA[Stratos II promotion]]></category>

		<guid isPermaLink="false">http://projectstratos.nl/?p=917</guid>
		<description><![CDATA[Traditionally every mission to space has a mission patch: a unique badge that is representative of the mission. Such a badge can function as a logo of the mission and is usually worn on team clothing. Stratos II can of course not stay behind in that respect. Therefore we designed a patch, which every team member can proudly wear on their shoulder:]]></description>
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		<slash:comments>2</slash:comments>
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		<item>
		<title>First launchday thrills</title>
		<link>http://projectstratos.nl/2011/05/first-launchday-thrills/</link>
		<comments>http://projectstratos.nl/2011/05/first-launchday-thrills/#comments</comments>
		<pubDate>Wed, 04 May 2011 22:40:59 +0000</pubDate>
		<dc:creator>Frank</dc:creator>
				<category><![CDATA[Blog]]></category>

		<guid isPermaLink="false">http://projectstratos.nl/?p=911</guid>
		<description><![CDATA[Next week will be a major milestone. Although the flight of the concept launcher is a very important test for the capsule team, something else excites me even more (and if you know me, you know that launching rockets makes me happy). Next week we will announce our project to the rest of world. We will tell them that we are aiming to reach that final boundary,and that we as students, are on our way to space. At this moment an average of 10 people per day visit this site. Maybe 40 people in total will read a blog item. [...]]]></description>
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		<slash:comments>2</slash:comments>
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		<item>
		<title>Stratos II: Halfway to Space in Leonardo Times</title>
		<link>http://projectstratos.nl/2011/03/stratos-ii-halfway-to-space-in-leonardo-times/</link>
		<comments>http://projectstratos.nl/2011/03/stratos-ii-halfway-to-space-in-leonardo-times/#comments</comments>
		<pubDate>Fri, 25 Mar 2011 14:58:06 +0000</pubDate>
		<dc:creator>Bryan</dc:creator>
				<category><![CDATA[Blog]]></category>
		<category><![CDATA[Stratos II]]></category>

		<guid isPermaLink="false">http://projectstratos.nl/?p=877</guid>
		<description><![CDATA[Today the March edition of the Leonardo Times was released. This is the Journal of the Society of Aerospace Engineering Students &#8216;Leonardo da Vinci&#8217;. In this edition an article written by Stratos project members is published about Stratos II. It elaborates on the design of the solid propulsion, hybrid propulsion, capsule and electronics. To read more continue to the article.]]></description>
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