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    <title>Explorer-1 [PRIME]</title>
    <link rel="alternate" type="text/html" href="http://ssel.montana.edu/explorer-1_prime/" />
    <link rel="self" type="application/atom+xml" href="http://ssel.montana.edu/explorer-1_prime/atom.xml" />
    <id>tag:ssel.montana.edu,2008-03-03:/explorer-1_prime//3</id>
    <updated>2008-08-31T19:17:19Z</updated>
    
    <generator uri="http://www.sixapart.com/movabletype/">Movable Type Open Source 4.1</generator>

<entry>
    <title>E1P summer team</title>
    <link rel="alternate" type="text/html" href="http://ssel.montana.edu/explorer-1_prime/2008/08/e1p-summer-team.html" />
    <id>tag:ssel.montana.edu,2008:/explorer-1_prime//3.42</id>

    <published>2008-08-11T21:58:16Z</published>
    <updated>2008-08-31T19:17:19Z</updated>

    <summary><![CDATA[ Here is the 2008 summer crew, click for complete listing.&nbsp; Not pictured, Floyd Azure, Sean Bannon, and Celena Byers. Twenty two students and faculty to build one 10cm cube, and everyone was essential.I hope everyone had a good summer!...]]></summary>
    <author>
        <name>Danny Jacobs</name>
        <uri>http://wheresmytab.googlepages.com</uri>
    </author>
    
    <category term="e1p" label="E1P" scheme="http://www.sixapart.com/ns/types#tag" />
    
    <content type="html" xml:lang="en-US" xml:base="http://ssel.montana.edu/explorer-1_prime/">
        <![CDATA[<span class="mt-enclosure mt-enclosure-image" style="display: inline;"><a href="http://ssel.montana.edu/explorer-1_prime/images/e1p_team_summer_2008.html" onclick="window.open('http://ssel.montana.edu/explorer-1_prime/images/e1p_team_summer_2008.html','popup','width=2816,height=2112,scrollbars=no,resizable=no,toolbar=no,directories=no,location=no,menubar=no,status=no,left=0,top=0'); return false"><img src="http://ssel.montana.edu/explorer-1_prime/images/e1p_team_summer_2008-thumb-400x300.jpg" alt="e1p_team_summer_2008" class="mt-image-left" style="margin: 0pt 20px 20px 0pt; float: left;" height="300" width="400" /></a></span> <div>Here is the 2008 summer crew, click for complete listing.&nbsp; Not pictured, Floyd Azure, Sean Bannon, and Celena Byers. Twenty two students and faculty to build one 10cm cube, and everyone was essential.<br />I hope everyone had a good summer!<br /><br /><br /><br /><br /></div>]]>
        <![CDATA[<br /><br /><br /><span class="mt-enclosure mt-enclosure-image" style="display: inline;"><a href="http://ssel.montana.edu/explorer-1_prime/images/summerinterns_08.html" onclick="window.open('http://ssel.montana.edu/explorer-1_prime/images/summerinterns_08.html','popup','width=2112,height=2816,scrollbars=no,resizable=no,toolbar=no,directories=no,location=no,menubar=no,status=no,left=0,top=0'); return false"><img src="http://ssel.montana.edu/explorer-1_prime/images/summerinterns_08-thumb-400x533.jpg" alt="e1p_summerinterns_08" class="mt-image-right" style="margin: 0pt 0pt 20px 20px; float: right;" height="533" width="400" /></a></span>Here
on the right&nbsp; are our interns from this summer. Sean (left) and Alex
(right) completely redesigned our passive ACS system.&nbsp; Sean went all
the way back to 1960s era Van Allen Hawkeye satellites while Alex went
back to the drawing board and managed to shave ~40grams from the system!<br />Patrick
(middle) was our first ever business/marketing student.&nbsp; With no
technical training he managed to jump right into scheduling and ended
up finding problems before anyone else would notice. Not pictured is
our BOB Master Andrew, who designed and built the most amazing (and
huge) Break Out Box.<br /><div><br /></div>]]>
    </content>
</entry>

<entry>
    <title>E1P: Echo of the space race</title>
    <link rel="alternate" type="text/html" href="http://ssel.montana.edu/explorer-1_prime/2008/06/e1p-echo-of-the-space-race.html" />
    <id>tag:ssel.montana.edu,2008:/explorer-1_prime//3.39</id>

    <published>2008-06-26T22:22:02Z</published>
    <updated>2008-08-05T17:08:07Z</updated>

    <summary>In 1958 Explorer-1 was America&apos;s first salvo in the space race, one theater of the US-USSR Cold War. What was the significance of the space race? How did Explorer-1 and the later moon landings figure into the larger picture? Why...</summary>
    <author>
        <name>Danny Jacobs</name>
        <uri>http://wheresmytab.googlepages.com</uri>
    </author>
    
    <category term="coldwar" label="cold war" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="e1p" label="E1P" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="explorer1" label="Explorer-1" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="media" label="media" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="spacerace" label="space race" scheme="http://www.sixapart.com/ns/types#tag" />
    
    <content type="html" xml:lang="en-US" xml:base="http://ssel.montana.edu/explorer-1_prime/">
        <![CDATA[<p>In 1958 Explorer-1 was America's first salvo in the space race, one theater of the US-USSR Cold War. What was the significance of the space race? How did Explorer-1 and the later moon landings figure into the larger picture? Why Explorer-1 [Prime]? This short film by a Masters student from our excellent <a href="http://naturefilm.montana.edu/index.php">Master Of Fine Arts in Science and Natural History Filmmaking</a> program attempts to answer these questions.</p>
<object height="350" width="425"><param name="movie" value="http://www.youtube.com/v/x2STzHXv9lY" />  <embed src="http://www.youtube.com/v/x2STzHXv9lY" type="application/x-shockwave-flash" height="350" width="425">  </object>
<p>Our opinion?  Explorer-1 [Prime] is our first satellite too!  Like the US in the fifties, we need to show we can do it!</p>]]>
        <![CDATA[<br />
]]>
    </content>
</entry>

<entry>
    <title>NASA Status Review</title>
    <link rel="alternate" type="text/html" href="http://ssel.montana.edu/explorer-1_prime/2008/06/e1p-and-nasa.html" />
    <id>tag:ssel.montana.edu,2008:/explorer-1_prime//3.35</id>

    <published>2008-06-13T21:09:41Z</published>
    <updated>2008-06-14T20:05:13Z</updated>

    <summary>A little over a week ago we were reviewed by an independent group of top NASA managers and engineers as part of the process of getting a spot on what we hope will be the very first NASA Cubesat launch....</summary>
    <author>
        <name>Danny Jacobs</name>
        <uri>http://wheresmytab.googlepages.com</uri>
    </author>
    
    
    <content type="html" xml:lang="en-US" xml:base="http://ssel.montana.edu/explorer-1_prime/">
        <![CDATA[<span class="mt-enclosure mt-enclosure-image" style="display: inline;"><a href="http://ssel.montana.edu/explorer-1_prime/images/taurusxl.html" onclick="window.open('http://ssel.montana.edu/explorer-1_prime/images/taurusxl.html','popup','width=150,height=186,scrollbars=no,resizable=no,toolbar=no,directories=no,location=no,menubar=no,status=no,left=0,top=0'); return false"><img src="http://ssel.montana.edu/explorer-1_prime/images/taurusxl-thumb-300x372.jpg" alt="taurusxl.jpg" class="mt-image-left" style="margin: 0pt 20px 20px 0pt; float: left;" height="87" width="70" /></a></span>A little over a week ago we were reviewed by an independent group of top NASA managers and engineers as part of the process of getting a spot on what we hope will be the very first NASA Cubesat launch. We prepared exhaustively, laid out a great presentation and got some very positive feedback from the reviewers.&nbsp; Needless to say, we are just now recovering.<br /><br />Despite the fact that Cubesats have become a popular educational activity and considered to be a serious endeavor only a few have made it to space.&nbsp; This is in large part due to the fact that even though a good fraction of them are being built in the US, no Cubesat has ever been launched from the United States.<br /><br />This could all change within the next 6 months as NASA's top officials consider approving the addition of a PPOD to one of its next missions.&nbsp; Like Explorer-1 [Prime] this is an historic opportunity for the US to advance the cause of educational launch opportunities. To do so on the eve of the 50th anniversary of the formation of NASA makes even more sense.&nbsp; We couldn't be more excited!<br />]]>
        
    </content>
</entry>

<entry>
    <title>E1P featured in MSU press release on MSU home page</title>
    <link rel="alternate" type="text/html" href="http://ssel.montana.edu/explorer-1_prime/2008/01/e1p-featured-in-msu-press-rele.html" />
    <id>tag:ssel.montana.edu,2008:/explorer-1_prime//3.23</id>

    <published>2008-01-29T22:25:10Z</published>
    <updated>2008-03-17T01:56:34Z</updated>

    <summary>MSU News service has published a press release about the Explorer 1 [prime] project to coincide with the anniversary this Thursday (Jan 31, 2008). The full article: MSU students build satellite for 50th anniversary of Explorer-1...</summary>
    <author>
        <name>Lars Osborne</name>
        
    </author>
    
    <category term="e1p" label="E1P" scheme="http://www.sixapart.com/ns/types#tag" />
    
    <content type="html" xml:lang="en-US" xml:base="http://ssel.montana.edu/explorer-1_prime/">
        <![CDATA[<span class="mt-enclosure mt-enclosure-image" style="display: inline;"><a href="http://ssel.montana.edu/explorer-1_prime/images/E1P_MSU_article_1.html" onclick="window.open('http://ssel.montana.edu/explorer-1_prime/images/E1P_MSU_article_1.html','popup','width=1529,height=1800,scrollbars=no,resizable=no,toolbar=no,directories=no,location=no,menubar=no,status=no,left=0,top=0'); return false"><img src="http://ssel.montana.edu/explorer-1_prime/images/E1P_MSU_article_1-thumb-200x235.jpg" alt="E1P_MSU_article_1.jpg" class="mt-image-left" style="margin: 0pt 20px 20px 0pt; float: left;" height="235" width="200" /></a></span><br />MSU News service has published a press release about the Explorer 1 [prime] project to coincide with the anniversary this Thursday (Jan 31, 2008).  The full article:<br />
<span class="plainlinks"><a href="http://www.montana.edu/cpa/news/nwview.php?article=5542" class="external text" title="http://www.montana.edu/cpa/news/nwview.php?article=5542" rel="nofollow">MSU students build satellite for 50th anniversary of Explorer-1</a></span> <div><br /></div>]]>
        
    </content>
</entry>

<entry>
    <title>Anniversary re-flight of the original 1958 mission</title>
    <link rel="alternate" type="text/html" href="http://ssel.montana.edu/explorer-1_prime/2007/05/anniversary-reflight-of-the-or.html" />
    <id>tag:ssel.montana.edu,2007:/explorer-1_prime//3.24</id>

    <published>2007-05-15T22:14:50Z</published>
    <updated>2008-03-11T23:11:22Z</updated>

    <summary> On October 4, 1957 the Council of Ministers of the USSR sent into a 270x920km orbit a sphere 23 inches in diameter that broadcast pressure and temperature data and did more to recruit young students into a career of...</summary>
    <author>
        <name>Lars Osborne</name>
        
    </author>
    
    <category term="e1p" label="E1P" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="explorerone" label="Explorer One" scheme="http://www.sixapart.com/ns/types#tag" />
    
    <content type="html" xml:lang="en-US" xml:base="http://ssel.montana.edu/explorer-1_prime/">
        <![CDATA[
On October 4, 1957 the Council of Ministers of the USSR sent into a
270x920km orbit a sphere 23 inches in diameter that broadcast pressure
and temperature data and did more to recruit young students into a
career of space science and engineering than any single event before or
since. In the four months that followed American scientists scrambled
to modify an existing rocket payload for an orbital payload developed
by James Van Allen at the University of Iowa. This race to match or
beat the USSR in space science achievements caused the United States to
grow its technological prowess at a rate never matched at any time. The
launch of America's first satellite, Explorer I, was not only one of
the peak accomplishments of the International Geophysical Year with its
detection of the powerfully Van Allen radiation belts but also launched
the space age, a social, political, scientific, and technological
trajectory which is only today beginning to coast on past achievements.
The stock of scientists, engineers, and even politicians that were
inspired by these early achievements is dwindling. Cubesats are an
attempt by this generation to inspire the next by providing a way for
students to build and fly their own experiments in space.

<div class="floatleft"><span class="mt-enclosure mt-enclosure-image" style="display: inline;"><a href="http://ssel.montana.edu/explorer-1_prime/images/E1P/Exp1_cutaway_labeled.html" onclick="window.open('http://ssel.montana.edu/explorer-1_prime/images/E1P/Exp1_cutaway_labeled.html','popup','width=674,height=432,scrollbars=no,resizable=no,toolbar=no,directories=no,location=no,menubar=no,status=no,left=0,top=0'); return false"><img src="http://ssel.montana.edu/explorer-1_prime/images/E1P/Exp1_cutaway_labeled-thumb-400x256.png" alt="Exp1_cutaway_labeled.png" class="mt-image-none" style="" height="256" width="400" /></a></span></div>
<p>Cubesat's are satellites in the shape of cubes approximately 4
inches on a side. Students at SSEL have been developing cubesats
continuously for over 6 years. These students build cubesats to gain
experience in aerospace but end up making advances by simply trying
naive ideas that would never occur to seasoned industry veterans. NASA
and the space industry fund these projects because their workforce is
rapidly dwindling as the first generation of rocket scientists retires.
</p>
<div class="floatright" align="right"><span class="mt-enclosure mt-enclosure-image" style="display: inline;"><a href="http://ssel.montana.edu/explorer-1_prime/images/E1P/Electra_cutaway_labeled.html" onclick="window.open('http://ssel.montana.edu/explorer-1_prime/images/E1P/Electra_cutaway_labeled.html','popup','width=1185,height=849,scrollbars=no,resizable=no,toolbar=no,directories=no,location=no,menubar=no,status=no,left=0,top=0'); return false"><img src="http://ssel.montana.edu/explorer-1_prime/images/E1P/Electra_cutaway_labeled-thumb-400x286.jpg" alt="Electra_cutaway_labeled.jpg" class="mt-image-none" style="" height="286" width="400" /></a></span></div>
<p>The second SSEL cubesat design, Electra, has been in development for
almost three years. Originally tasked with carrying a large spool of
space tether, the electronics and structure had to occupy less space
than any cubesat ever developed. SSEL students have pushed the limits
on current cubesat technology, incorporating high tech elements from
laptop computers, cell phones, and know-how gleaned from on site
experience at major satellite laboratories. Though initially tasked
with a space tether orbital dynamics experiment Electra's mission
changed forever on July 29, 2006.
</p><p>Late that night a Russian converted ICBM carrying MEROPE,
Montana's and SSEL's first cubesat failed to achieve orbit, crashing
into the sage deserts of rural Kazahkstan. MEROPE carried a Geiger
counter experiment very similar to that flown on the Explorer I
mission. It was to demonstrate that with 21st century technology, a
small group of students with little experience and a handful of off the
shelf parts could repeat the mission of America's first satellite.
</p><p>Though the satellite was destroyed, it still performed its
mission, because of MEROPE the ranks of scientists and engineers have
swelled with new blood. To carry on MEROPE's purpose and to honor
America's achievement in Explorer I 50 years ago Electra has been
retooled to be Explorer I (Prime); it will carry a Geiger counter
payload very similar to MEROPE's. In addition Explorer I (Prime) will
demonstrate a high data rate communications link as well as technology
developed for MEROPE such as deployable tape measure antennae. In the
intervening years since MEROPE was commissioned cubesats have become
more commonplace in industry making the prospect of finding an American
launch provider more rosy than in 2001. When Explorer I (Prime) goes to
space sometime in late 2008 it will ride an American from Kennedy Space
Center in Florida.
</p><p>In 1958 a Russian launch spread shock waves around the world
and spurred Americans to answer in kind with an entry of their own. 50
years later young American scientists are again racing the clock and
pushing technology barriers to answer a different kind of shock wave
from another Russian launch.
</p> ]]>
        
    </content>
</entry>

<entry>
    <title>Our project today</title>
    <link rel="alternate" type="text/html" href="http://ssel.montana.edu/explorer-1_prime/2007/01/our-project-today.html" />
    <id>tag:ssel.montana.edu,2007:/explorer-1_prime//3.25</id>

    <published>2007-01-23T23:25:12Z</published>
    <updated>2008-03-17T01:58:02Z</updated>

    <summary> A snapshot of the Exp1&apos; hardware in bench testing configuration. At right you can see the finished structure awaiting anodizing and coating. In the middle of the frame are the HCX12 flight computer and the CC1000 radio. The radio...</summary>
    <author>
        <name>Lars Osborne</name>
        
    </author>
    
    <category term="e1p" label="E1P" scheme="http://www.sixapart.com/ns/types#tag" />
    
    <content type="html" xml:lang="en-US" xml:base="http://ssel.montana.edu/explorer-1_prime/">
        <![CDATA[<br />

<div class="floatright"><span class="mt-enclosure mt-enclosure-image" style="display: inline;"><a href="http://ssel.montana.edu/explorer-1_prime/images/E1P/E1p_hardware_snapshot_jan_08.html" onclick="window.open('http://ssel.montana.edu/explorer-1_prime/images/E1P/E1p_hardware_snapshot_jan_08.html','popup','width=2816,height=2112,scrollbars=no,resizable=no,toolbar=no,directories=no,location=no,menubar=no,status=no,left=0,top=0'); return false"><img src="http://ssel.montana.edu/explorer-1_prime/images/E1P/E1p_hardware_snapshot_jan_08-thumb-200x150.jpg" alt="E1p_hardware_snapshot_jan_08.jpg" class="mt-image-none" style="" height="150" width="200" /></a></span></div>
<p>A snapshot of the Exp1' hardware in bench testing configuration. At
right you can see the finished structure awaiting anodizing and
coating. In the middle of the frame are the HCX12 flight computer and
the CC1000 radio. The radio is connected to a Ham radio (left) through
an attenuator. Behind everything is our custom-built Ground Support
Equipment that provides power, charging, programming, monitoring, and
indicators.
</p>
<div class="floatleft"><span class="mt-enclosure mt-enclosure-image" style="display: inline;"><a href="http://ssel.montana.edu/explorer-1_prime/images/E1P/E1p_payload_snapshot_summer_07.html" onclick="window.open('http://ssel.montana.edu/explorer-1_prime/images/E1P/E1p_payload_snapshot_summer_07.html','popup','width=886,height=664,scrollbars=no,resizable=no,toolbar=no,directories=no,location=no,menubar=no,status=no,left=0,top=0'); return false"><img src="http://ssel.montana.edu/explorer-1_prime/images/E1P/E1p_payload_snapshot_summer_07-thumb-200x149.jpg" alt="E1p_payload_snapshot_summer_07.jpg" class="mt-image-none" style="" height="149" width="200" /></a></span></div>
<p>In the second picture we have on of the Geiger tubes in the circular
test harness pointing at a radioactive source in the center. We are
trying to find the best tube to use in the spacecraft. The technique
and equipment (amplifier and counter in metal rack at right) have not
changed much since the days of Explorer 1.
</p><p><br />
</p> ]]>
        
    </content>
</entry>

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