http://openluna.org/wiki/index.php?title=Launch_Vehicle&feed=atom&action=historyLaunch Vehicle - Revision history2024-03-29T09:38:25ZRevision history for this page on the wikiMediaWiki 1.20.3http://openluna.org/wiki/index.php?title=Launch_Vehicle&diff=2712&oldid=prevPaul: Paul's request to move discussion to Discussion.2012-10-10T21:50:16Z<p>Paul's request to move discussion to Discussion.</p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The Launch Options for two [[mission 1]] possibilities:</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The Launch Options for two [[mission 1]] possibilities:</div></td></tr>
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<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>SpaceX Falcon 1e (can't inject directly to Lunar Transfer)</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>SpaceX Falcon 1e (can't inject directly to Lunar Transfer <ins class="diffchange diffchange-inline">- EOL)</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">SpaceX Falcon 9 (Will provide all required capacity, stated capacity to provide service.)</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">SpaceX Falcon Heavy (Beyond required capacity.</ins>)</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Orbital Pegasus (can't inject directly to Lunar Transfer)</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Orbital Pegasus (can't inject directly to Lunar Transfer)</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>----</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>----</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">Let's keep all discussions like below (and some of the above) to the Discussion page. I will request the individual authors to study and edit their indivisual contributions. Paul will answer some thoughts and questions below - in the discussion page, as time allows. (Referring to content replaced in the damaged sections of the wiki.</ins></div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>In order to sensibly discuss launch vehicle options for a polar lunar outpost, there needs to be a weight budget.    How many tons of hardware must be soft landed on to the lunar surface?</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>In order to sensibly discuss launch vehicle options for a polar lunar outpost, there needs to be a weight budget.    How many tons of hardware must be soft landed on to the lunar surface?</div></td></tr>
</table>Paulhttp://openluna.org/wiki/index.php?title=Launch_Vehicle&diff=2710&oldid=prevCharles radley: outpost requirements2012-10-09T23:20:37Z<p>outpost requirements</p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Orbital Taurus (can inject directly to Lunar Transfer, but non-</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Orbital Taurus (can inject directly to Lunar Transfer, but non-</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>standard service)</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>standard service)</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Piggyback on big booster (might be cheapest, but we'd most likely wind up on a GTO...not quite Lunar Transfer...ad 20% to Lunar Transfer Mass)</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Piggyback on big booster (might be cheapest, but we'd most likely wind up on a GTO...not quite Lunar Transfer...ad 20% to Lunar Transfer Mass)</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>In order to sensibly discuss launch vehicle options for a polar lunar outpost, there needs to be a weight budget.    How many tons of hardware must be soft landed on to the lunar surface?</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>In order to sensibly discuss launch vehicle options for a polar lunar outpost, there needs to be a weight budget.    How many tons of hardware must be soft landed on to the lunar surface?</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">Multiple launches on large  vehicles will be needed, e.g. Ariane-V, Delta-IV, Atlas-V, Proton, SLS.</ins></div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Non-"chemical rocket" options can be developed at relatively low cost, and greatly reduce the cost of lunar landing by over an order of magnitude.  Electric propulsion can be used to efficiently transfer payloads from LEO to Luna, as demonstrated by the ESA Smart-1 probe a in the early 21st century.  Boeing has commercial contracts to use electric propulsion to transport communications satellites from LEO to GEO, which is more delta-v than a translunar mission.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Non-"chemical rocket" options can be developed at relatively low cost, and greatly reduce the cost of lunar landing by over an order of magnitude.  Electric propulsion can be used to efficiently transfer payloads from LEO to Luna, as demonstrated by the ESA Smart-1 probe a in the early 21st century.  Boeing has commercial contracts to use electric propulsion to transport communications satellites from LEO to GEO, which is more delta-v than a translunar mission.</div></td></tr>
</table>Charles radleyhttp://openluna.org/wiki/index.php?title=Launch_Vehicle&diff=2709&oldid=prevCharles radley: formatting2012-10-09T23:17:58Z<p>formatting</p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>For lunar polar regions, a momentum exchange tether system can used, as outlined by Hoyt and Uphoff (1999), and others earlier than them.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>For lunar polar regions, a momentum exchange tether system can used, as outlined by Hoyt and Uphoff (1999), and others earlier than them.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>[http://tethers.com/papers/CislunarAIAAPaper.pdf Ref:  AIAA-99-2690 CISLUNAR TETHER TRANSPORT SYSTEM  Robert P. Hoyt* Tethers Unlimited, Inc., Seattle, Washington 98125-3236 USA, Chauncey Uphoff† Fortune Eight Aerospace, Niwot, Colorado 80544 USA ]</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>[http://tethers.com/papers/CislunarAIAAPaper.pdf Ref:  AIAA-99-2690 <ins class="diffchange diffchange-inline">"</ins>CISLUNAR TETHER TRANSPORT SYSTEM<ins class="diffchange diffchange-inline">"; </ins> Robert P. Hoyt* Tethers Unlimited, Inc., Seattle, Washington 98125-3236 USA, Chauncey Uphoff† Fortune Eight Aerospace, Niwot, Colorado 80544 USA ]</div></td></tr>
</table>Charles radleyhttp://openluna.org/wiki/index.php?title=Launch_Vehicle&diff=2708&oldid=prevCharles radley: url2012-10-09T23:17:05Z<p>url</p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>For lunar polar regions, a momentum exchange tether system can used, as outlined by Hoyt and Uphoff (1999), and others earlier than them.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>For lunar polar regions, a momentum exchange tether system can used, as outlined by Hoyt and Uphoff (1999), and others earlier than them.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Ref:  AIAA-99-2690 CISLUNAR TETHER TRANSPORT SYSTEM  Robert P. Hoyt* Tethers Unlimited, Inc., Seattle, Washington 98125-3236 USA, Chauncey Uphoff† Fortune Eight Aerospace, Niwot, Colorado 80544 USA</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">[http://tethers.com/papers/CislunarAIAAPaper.pdf </ins>Ref:  AIAA-99-2690 CISLUNAR TETHER TRANSPORT SYSTEM  Robert P. Hoyt* Tethers Unlimited, Inc., Seattle, Washington 98125-3236 USA, Chauncey Uphoff† Fortune Eight Aerospace, Niwot, Colorado 80544 USA <ins class="diffchange diffchange-inline">]</ins></div></td></tr>
</table>Charles radleyhttp://openluna.org/wiki/index.php?title=Launch_Vehicle&diff=2707&oldid=prevCharles radley: Non-"chemical rocket" options2012-10-09T23:14:27Z<p>Non-"chemical rocket" options</p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The [http://ascentroadmap.blogspot.com Ascent Roadmap]: is one plan to develop low-cost private access to space by the After Columbia Project.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The [http://ascentroadmap.blogspot.com Ascent Roadmap]: is one plan to develop low-cost private access to space by the After Columbia Project.</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">In order to sensibly discuss launch vehicle options for a polar lunar outpost, there needs to be a weight budget.    How many tons of hardware must be soft landed on to the lunar surface?</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">Non-"chemical rocket" options can be developed at relatively low cost, and greatly reduce the cost of lunar landing by over an order of magnitude.  Electric propulsion can be used to efficiently transfer payloads from LEO to Luna, as demonstrated by the ESA Smart-1 probe a in the early 21st century.  Boeing has commercial contracts to use electric propulsion to transport communications satellites from LEO to GEO, which is more delta-v than a translunar mission.</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">A lunar elevator can be used to transfer from Lunar L1 (or L2) to lunar equatorial regions, at a capital cost of $800M, using available OTS materials, the first generation elevator will deliver an infinite number of 100 kg payloads softly to the lunar surface, eliminating the cost of chemical rockets.</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">For lunar polar regions, a momentum exchange tether system can used, as outlined by Hoyt and Uphoff (1999), and others earlier than them.</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">Ref:  AIAA-99-2690 CISLUNAR TETHER TRANSPORT SYSTEM  Robert P. Hoyt* Tethers Unlimited, Inc., Seattle, Washington 98125-3236 USA, Chauncey Uphoff† Fortune Eight Aerospace, Niwot, Colorado 80544 USA</ins></div></td></tr>
</table>Charles radleyhttp://openluna.org/wiki/index.php?title=Launch_Vehicle&diff=445&oldid=prevSnyder at 18:33, 29 April 20092009-04-29T18:33:12Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The Launch Options for two [[mission 1]] possibilities:</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The Launch Options for two [[mission 1]] possibilities:</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Piggyback on big booster (might be cheapest, but we'd most likely wind up on a GTO...not quite Lunar Transfer...ad 20% to Lunar Transfer Mass)</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Piggyback on big booster (might be cheapest, but we'd most likely wind up on a GTO...not quite Lunar Transfer...ad 20% to Lunar Transfer Mass)</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Something New: <del class="diffchange diffchange-inline">One </del>of our team members <del class="diffchange diffchange-inline">is </del>working on <del class="diffchange diffchange-inline">a </del>new, pressure-fed liquid fuelled small booster <del class="diffchange diffchange-inline">family </del>embodying most of the recommendations from USAF Lt. Col. John R. London III's [http://www.dunnspace.com/leo_on_the_cheap.htm LEO On The Cheap]. If successful, a dedicated launch service could be provided below the minimum capacities (and well below the prices of) the above listed boosters. Such a booster would have no immediate competition. The first step in moving ahead with this booster is figuring out if there is enough of a market for its services for it to be a worthwhile investment.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Something New: <ins class="diffchange diffchange-inline">Several </ins>of our team members <ins class="diffchange diffchange-inline">are </ins>working on new, pressure-fed<ins class="diffchange diffchange-inline">, </ins>liquid fuelled<ins class="diffchange diffchange-inline">, </ins>small booster <ins class="diffchange diffchange-inline">families </ins>embodying most of the recommendations from USAF Lt. Col. John R. London III's [http://www.dunnspace.com/leo_on_the_cheap.htm LEO On The Cheap]. If successful, a dedicated launch service could be provided below the minimum capacities (and well below the prices of) the above listed boosters. Such a booster would have no immediate competition. The first step in moving ahead with this booster is figuring out if there is enough of a market for its services for it to be a worthwhile investment<ins class="diffchange diffchange-inline">.</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">The [http://ascentroadmap.blogspot.com Ascent Roadmap]: is one plan to develop low-cost private access to space by the After Columbia Project</ins>.</div></td></tr>
</table>Snyderhttp://openluna.org/wiki/index.php?title=Launch_Vehicle&diff=95&oldid=prevPaul at 18:48, 22 August 20082008-08-22T18:48:56Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>The Launch Options for two [[mission <ins class="diffchange diffchange-inline">1</ins>]] possibilities:</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>The Launch Options for two [[mission <del class="diffchange diffchange-inline">one</del>]] possibilities:</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>SpaceX Falcon 1e (can't inject directly to Lunar Transfer)</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>SpaceX Falcon 1e (can't inject directly to Lunar Transfer)</div></td></tr>
</table>Paulhttp://openluna.org/wiki/index.php?title=Launch_Vehicle&diff=94&oldid=prevPaul: Some segmentation changes.2008-08-22T18:48:10Z<p>Some segmentation changes.</p>
<table class='diff diff-contentalign-left'>
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<col class='diff-marker' />
<col class='diff-content' />
<tr style='vertical-align: top;'>
<td colspan='2' style="background-color: white; color:black;">← Older revision</td>
<td colspan='2' style="background-color: white; color:black;">Revision as of 18:48, 22 August 2008</td>
</tr><tr><td colspan="2" class="diff-lineno">Line 1:</td>
<td colspan="2" class="diff-lineno">Line 1:</td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del style="color: red; font-weight: bold; text-decoration: none;">Mission One is, of course, not set in stone, but for preliminary estimates, we can come up with some ground rules for figuring out what our launch vehicle is going to be like:</del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del style="color: red; font-weight: bold; text-decoration: none;">1. LEO to Lunar Transfer (3000m/s delta-v): Uses up 2/3 of the booster's LEO payload, or multiplies required Lunar Transfer mass by 3.</del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">2. Landing (2600m/s delta-v, plus landing gear): Uses up 2/3 of the payload taken to Lunar Transfer, or multiplies Landing mass by 3. (Therefore, a booster's LEO payload can be divided by 9 to estimate how much we can get to the surface of the Moon.)</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>The Launch Options for <ins class="diffchange diffchange-inline">two [[mission one]] </ins>possibilities:</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">3. The Rover: 20kg based on Sojourner Truth, the rover that went to Mars with Pathfinder in 1997, should be close enough for first estimates.</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">4. The Docking Port: 5kg, a conservative guess</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">5. A Hop (delta-v 1/10 of exhaust speed): Adds 1/8 mass to whatever mass we are hopping</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">Baseline: 3 Rovers, landed at three different site separated by Hops:</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">Rovers: 60kg</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">Docking Ports: 15kg</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">Hops: one at 35kg (40kg before hop), one at 65kg (73kg before hop)</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">Mass at Landing: 93kg (13kg hopping system)</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">Mass at Lunar Transfer: 279kg</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">Mass at LEO: 837kg</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">The baseline is probably a perfect fit for Falcon 1e, except that Falcon 1e wouldn't be able to inject directly to Lunar Transfer, so we'd need to procure an upper stage.</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">Single Rover Option: 1 Rover, 2 Hops</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">Rovers: 20kg</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">Docking Ports: 5kg</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">Nervous Factor: 10kg (somehow 25kg final mass seems too light)</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">Hops: one at 35kg (40kg before hop), one at 40kg (46kg before hop)</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">Mass at Landing: 46kg</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">Mass at Lunar Transfer: 138kg</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">Mass at LEO: 414kg</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>The Launch Options for <del class="diffchange diffchange-inline">both </del>possibilities:</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>SpaceX Falcon 1e (can't inject directly to Lunar Transfer)</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>SpaceX Falcon 1e (can't inject directly to Lunar Transfer)</div></td></tr>
</table>Paulhttp://openluna.org/wiki/index.php?title=Launch_Vehicle&diff=92&oldid=prevAftercolumbia: New page: Mission One is, of course, not set in stone, but for preliminary estimates, we can come up with some ground rules for figuring out what our launch vehicle is going to be like: 1. LEO to L...2008-08-17T04:58:58Z<p>New page: Mission One is, of course, not set in stone, but for preliminary estimates, we can come up with some ground rules for figuring out what our launch vehicle is going to be like: 1. LEO to L...</p>
<p><b>New page</b></p><div>Mission One is, of course, not set in stone, but for preliminary estimates, we can come up with some ground rules for figuring out what our launch vehicle is going to be like:<br />
<br />
1. LEO to Lunar Transfer (3000m/s delta-v): Uses up 2/3 of the booster's LEO payload, or multiplies required Lunar Transfer mass by 3.<br />
<br />
2. Landing (2600m/s delta-v, plus landing gear): Uses up 2/3 of the payload taken to Lunar Transfer, or multiplies Landing mass by 3. (Therefore, a booster's LEO payload can be divided by 9 to estimate how much we can get to the surface of the Moon.)<br />
<br />
3. The Rover: 20kg based on Sojourner Truth, the rover that went to Mars with Pathfinder in 1997, should be close enough for first estimates.<br />
<br />
4. The Docking Port: 5kg, a conservative guess<br />
<br />
5. A Hop (delta-v 1/10 of exhaust speed): Adds 1/8 mass to whatever mass we are hopping<br />
<br />
Baseline: 3 Rovers, landed at three different site separated by Hops:<br />
<br />
Rovers: 60kg<br />
<br />
Docking Ports: 15kg<br />
<br />
Hops: one at 35kg (40kg before hop), one at 65kg (73kg before hop)<br />
<br />
Mass at Landing: 93kg (13kg hopping system)<br />
<br />
Mass at Lunar Transfer: 279kg<br />
<br />
Mass at LEO: 837kg<br />
<br />
The baseline is probably a perfect fit for Falcon 1e, except that Falcon 1e wouldn't be able to inject directly to Lunar Transfer, so we'd need to procure an upper stage.<br />
<br />
<br />
Single Rover Option: 1 Rover, 2 Hops<br />
<br />
Rovers: 20kg<br />
<br />
Docking Ports: 5kg<br />
<br />
Nervous Factor: 10kg (somehow 25kg final mass seems too light)<br />
<br />
Hops: one at 35kg (40kg before hop), one at 40kg (46kg before hop)<br />
<br />
Mass at Landing: 46kg<br />
<br />
Mass at Lunar Transfer: 138kg<br />
<br />
Mass at LEO: 414kg<br />
<br />
<br />
The Launch Options for both possibilities:<br />
<br />
SpaceX Falcon 1e (can't inject directly to Lunar Transfer)<br />
<br />
Orbital Pegasus (can't inject directly to Lunar Transfer)<br />
<br />
Orbital Minotaur (can't inject directly to Lunar Transfer)<br />
<br />
Orbital Minotaur IV (can't inject directly to Lunar Transfer)<br />
<br />
Orbital Taurus (can inject directly to Lunar Transfer, but non-<br />
standard service)<br />
<br />
Piggyback on big booster (might be cheapest, but we'd most likely wind up on a GTO...not quite Lunar Transfer...ad 20% to Lunar Transfer Mass)<br />
<br />
Something New: One of our team members is working on a new, pressure-fed liquid fuelled small booster family embodying most of the recommendations from USAF Lt. Col. John R. London III's [http://www.dunnspace.com/leo_on_the_cheap.htm LEO On The Cheap]. If successful, a dedicated launch service could be provided below the minimum capacities (and well below the prices of) the above listed boosters. Such a booster would have no immediate competition. The first step in moving ahead with this booster is figuring out if there is enough of a market for its services for it to be a worthwhile investment.</div>Aftercolumbia