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Dave Ketchledge, Sunday, 7-13-13 July 8, 2013

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Dave Ketchledge, Sunday, 7-13-13


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Guest:  Dave Ketchledge.  Topics:  Mars Lander Choices.  Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, https://thespaceshow.wordpress.com.  Comments and questions should be relevant to the specific Space Show program. Written Transcripts of Space Show programs are a violation of our copyright and are not permitted without prior written consent, even if for your own use. We do not permit the commercial use of Space Show programs or any part thereof, nor do we permit editing, YouTube clips, or clips placed on other private channels & websites. Space Show programs can be quoted, but the quote must be cited or referenced using the proper citation format. Contact The Space Show for further information. In addition, please remember that your Amazon purchases can help support The Space Show/OGLF. See www.onegiantleapfoundation.org/amazon.htm.  For those of you interested in the opportunity to submit feedback on the NRC congressionally mandated Human Spaceflight Study, please go to www.nationalacademies.org/humanspaceflight.   Please remember that your Amazon Purchases Can Help Support The Space Show/OGLF (http://www.onegiantleapfoundation.org/amazon.htm).

We welcomed Dave Ketchledge back to the program to discuss Mars precision human spaceflight lander choices.  During the first segment of our 2 hour 13 minute discussion, we covered Dave’s basic thesis and analysis regarding landing large payloads on Mars and the need for very accurate and precise landings for the human spacecraft.  While at times the first segment was technical and perhaps complicated, it provided the necessary groundwork and foundation for our discussion during the second half of the program. During the first part, Dave explained the need for a precision human landing on Mars, the difficulties in doing that, the pros and cons of the various shapes to use for the human spacecraft, and why the Pershing 2 missile nosecone offered the best shape and design.  Dave cited his references for his analysis and conclusions.

In the second segment, we started with a listener question about the origin of the DC-X vehicle design as it was related to the analysis, conclusions, and explanations Dave provided earlier in the discussion.  Dave continued his comparison and analysis of the three potential vehicle designs, then I asked a series of questions sent in by listener Curt from the recently held Humans to Mars conference regarding issues in landing a large payload on Mars.  Dave also spoke about heavy lift and the need for an SLS type vehicle, speaking to the additional needs for using smaller launches. These needs include planning on replacement launches and payloads which must be figured into the costs as all the advance launches of supplies & materials to Mars will be mission critical launches.  The crew should be the last launch to the planet. Listeners both emailed in questions for Dave and additional listener phone calls were received.  Dave continued to reference the NASA Mars Design Study, work done by JPL, Dr. Robert Manning, and others. We talked about the Mars One program & how it might land its human crew on Mars.  We also talked about HSF to Mars policy &the absence of political leadership for a human mission to Mars.  Dave addressed media issues but largely stayed with the shape of the human spaceflight spaceship, the need for a precision landing, and what might work best.

Please post your comments/questions on The Space Show blog above.  You can email Dave at the address he provided on air at the end of the show.

Matthew Kleiman, Monday, 11-28-11 November 29, 2011

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Matthew Kleiman, Monday, 11-28-11


Guest:  Matthew Kleiman.  Topics:  Protecting Apollo artifacts on the Moon, space legal & property rights issues.  You are invited to comment, ask questions, and discuss the Space Show program/guest(s) on the Space Show blog, https://thespaceshow.wordpress.com.  Comments, questions, and any discussion must be relevant and applicable to Space Show programming. Transcripts of Space Show programs are not permitted without prior written consent from The Space Show (even if for personal use) & are a violation of the Space Show copyright.  The Space Show/OGLF is now engaged in its annual fundraising drive. Please see & act upon our appeal at https://thespaceshow.wordpress.com/2011/11/21/space-show-2011-fundraising-campaign. We welcomed Matthew (Matt) Kleiman to the show to discuss his recent TSR article, “Protecting Apollo artifacts on the Moon, written on November 7, 2011. You can read the article at www.thespacereview.com/article/1961/1.  We began our discussion by describing the Apollo artifact situation, explaining ownership of them per the Outer Space Treaty in that there is no space salvage law.  He said NASA recently issued guidelines for protecting the Apollo artifacts given the likelihood that private companies and possibly other nations might get to the sites, disturb or alter them, or even contaminate a few of the ongoing experiments that are still functioning.  As you will hear, the guidelines are not enforceable, they are voluntary, and  you can find them at www.collectspace.com/news/NASA-USG_lunar_historic_sites.pdf.  We spent a major part of this segment talking about the guidelines and related issues.  Also discussed were liability issues and the problem with determining negligence regarding space activities.  A listener asked about the timing of the NASA guidelines announcement given that at least for now, we are unable to return to the Moon.  Matt then separated out robotic missions to the Moon as compared to humans returning to the Moon.  Our discussion also took us to the issue of property rights on the Moon and elsewhere in space.  We started the next segment by asking Matt about the Moon Treaty and its status.  We talked some more about salvage law for space and addressed the issue of why the US prefers to use international law for protecting the sites rather than doing it unilaterally as that raises potential sovereignty issues posed the by the space treaties.  Phobos-Grunt came up with regards to space debris issues.  During our space debris discussion, we talked about liability, the fact that an individual cannot bring an action other than through his/her country (the State Department for U.S. citizens) and more.  Matt talked about and described the Reasonable Person Doctrine.  A listener asked about the Google Lunar X-Prize and Matt briefly talked about the Draper programs with two teams.  He also told us about the long standing Draper Labs participation in our space program and that Draper Labs was the first non-government Apollo team member.  Another listener asked about the common heritage of mankind language in the Moon Treaty and to a lesser degree in the Outer Space Treaty.  Toward the end of our discussion, we talked about the challenges for making new treaties and the concepts/programs being used to accomplish nearly the same as a treaty but using a process other than a treaty.  If you have questions/comments, please post them on The Space Show blog URL above.  Matt can be emailed at matthew.kleiman@gmail.com.