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Dr. Ian Crawford, Friday, 5-29-15 May 30, 2015

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Dr. Ian Crawford, Friday, 5-29-15

Dr. Haym Benaroya, Co-host

Download his paper here:  http://www.homepages.ucl.ac.uk/~ucfbiac/Lunar_resources_review_preprint_accepted_manuscript.pdf

http://archived.thespaceshow.com/shows/2482-BWB-2015-05-29.mp3

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Guests:  Dr. Ian Crawford, Dr. Haym Benaroya.  Topics:  Lunar resource and policy.  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 listening to archives using live365.com and rating the programs, please email me as to why you assign a specific rating to the show. This will help me bring better programming to the audience.

We welcomed Dr. Ian Crawford to the program to discuss his work and paper “Lunar Resources: A Review.”  This paper can be found on The Space Show blog for this date and show, https://thespaceshow.wordpress.com.  In addition, Dr. Haym Benaroya co-hosted the program with me.  During the first segment of our 1 hour 20 minute discussion, Dr. Crawford explained the motivation behind his research plus I asked him about any surprises he came upon during his research.  Two areas that surprised him included Platinum Group Metals (PGM) and helium three (HE3).  He referred to HE3 several times but he discussed it in more detail in the second segment so I will defer until then.  We talked at length as to why the Moon was of interest. He talked about the scientific value of the Moon as well as learning how to do things in space that we will need later on gong to Mars or other destinations.  He said the Moon was resource rich but that we were only beginning to learn what we can do on the Moon and how to benefit from its resources.  Both our guests were asked if we were nearing the maximum point of benefit for remote sensing lunar operations.  The answer was yes but we were not there yet as more improvements in HD resolution and other areas are yet to be realized.  That said, robotic lunar exploration is now available as is human exploration.  Both Haym and Ian said the format for lunar exploration would likely need to be public private partnerships, even with international missions.  They also said we need to start doing it now. Haym said it was a bootstrap type of process and Ian said it was a learn as you do process.  On the job lunar training!  Haym also mentioned that 3D printing and robotic systems would lead the way before humans.  He also suggested they might evolve to the point that they can do construction so astronauts going to the Moon do not have to be “construction workers.”  As the segment was ending, Ian was asked about the needed legal infrastructure to commercialize lunar resources.  He had much to say about this before the segment ended.  As the segment was ended, an 11th hour question was asked about making rocket fuel from water ice & could we do it today.

In the second segment, Doug from S. California called & wanted to know if there was any resource needed for settlement on the Moon that was completely lacking or unavailable on the Moon.  Ian said it was a complicated answer given that a resource might be there but the needed energy to use it might make it impractical. He said for a long time to come we would be making things on Earth and importing Earth products to the Moon but as Haym said earlier, it would be a bootstrapping and learn as you go and do process.  Ian then talked about the solar wind and its deposits of material in the lunar soil such as nitrogen, HE3 and more.  He talked some about polar ice, then told us why he did not think there was an economic case for HE3 and that its claims were vastly overstated.  Doug got in a question about inflatable lunar structures and Haym said they would need to be made rigid but otherwise a good way to start.  Doug did not like the Caterpillar analogy for lunar mining equipment given such equipment would not look like Earth equipment, especially since here on Earth equipment works in 1G.  We talked about the likelihood that companies like Caterpillar would still have their orange paint and logo on the Moon because if there was an equipment business case to be made, existing companies would likely want to compete in that market & Caterpillar is an industry leader.  Near the end of the discussion, Frank sent in a question asking him about his comments in his paper about cis-lunar being the first market available for exploitation.  Ian responded to Frank’s question so don’t miss the answer.  Jane emailed in asking if there was a resource case to be made for HSF to Mars.  Another Frank emailed in from Dallas asking about U.S. space leadership and could the international community carry on a robust lunar development program with the U.S. sitting on the sidelines.  Dr. Crawford talked for some time addressing this issue.  He also pointed to additional resources by checking out the Global Exploration Strategy and The International Space Exploration Coordination Group.  The latter has a document on its website outlining the major benefits of space exploration, www.globalspaceexploration.org/wordpress/wp-content/uploads/2013/10/Benefits-Stemming-from-Space-Exploration-2013.pdf.  Before the program ended, he was asked about using asteroid resources so don’t miss his response on this timely topic.  In closing comments, Haym made the case for the Moon being the logical next step on our space development timeline.  Ian supported those comments adding even more rational to what Dr. Benaroya said.

Please post your comments/questions on The Space Show blog above.  You can reach Dr. Crawford or Dr. Benaroya through their university websites or me.

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Dr. Haym Benaroya, Friday, 1-9-15 January 10, 2015

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Dr. Haym Benaroya, Friday, 1-9-15

http://archived.thespaceshow.com/shows/2390-BWB-2015-01-09.mp3

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Guest:  Dr. Haym Benaroya.  Topics: Reality check for lunar settlement construction & habitat.  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 http://www.onegiantleapfoundation.org/amazon.htm.  For those listening to archives using live365.com and rating the programs, please email me as to why you assign a specific rating to the show. This will help me bring better programming to the audience.

We welcomed back Professor Haym Benaroya to take us through the steps necessary to establish a lunar settlement, the challenges, our initial TRL and more.  During the first segment of our 97 minute program, Dr. Benaroya advocated for the Moon before Mars and stated his reasons which he repeated several times during the interview.  We talked about the size of the launch vehicle needed for establishing a lunar outpost and then launch costs came up, especially with regards to the proposed Falcon Heavy.  Our guest was asked about one way lunar missions which he did not think possible anytime soon and here he referenced the history of psychological problems encountered by many in spaceflight.  At this point, let me say that we received a few cell phone calls with unacceptable audio on their phone.  Since Dr. Benaroya could get most of what the caller was saying (I could not), I tolerated the poor quality calls for as long as possible and then terminated them.  Listeners, please, use a quality phone line to call the show.  If your call is garbled, I will disconnect you.  Doug called from S. California to talk about consumables being the largest part of the mass. He talked about reducing the mass by using lunar water, recycling, etc.  Dr. Benaroya explained that would not happen right away so for the early stages of an outpost, mass from Earth will be the name of the game. Other topics in this segment included the use of lunar robotics, TRLs today and for the future, & incremental engineering. Dr. Bill Rowe called to talk about medical issues such a heart attack in space, mall absorption of drugs in the GI system, & the need for subcutaneous pharmaceutical administration in space.  Lunar dust was an issue & John from Ft. Worth called to ask our guest to talk about the dust & why it was so challenging to deal with re astronauts and equipment.

In the second segment, we talked about the role of structural and civil engineers, how they go about defining the environment they will be working with and more.  All of this was in response to the question of how does one actually go about building a lunar outpost given one does not exist.  Haym talked about radiation, microgravity and the likelihood that the first crews would be there for six month and return and live in a pressurized cylinder of some sort.  Lunar manufacturing was a discussion topic as was ISRU, 3D printing & the maintenance and repair of lunar equipment.  Haym responded to a question about possible Moon-Mars synergy.  Doug email in questions about inflatable structures and Haym talked about the need to make them rigid.  Doug also asked about duplicating 1/6th g here on Earth and the use of a short arm centrifuge.  Near the end of the show, Haym said the barriers were really political decisions, not the engineering, physics, medical, etc.  He also said it would a long time to build out a lunar outpost and we should be patient.

Please post your comments/questions on TSS blog above.

Behrokh Khoshnevis, Sunday, 4-6-14 April 7, 2014

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Behrokh Khoshnevis, Sunday, 4-6-14

http://archived.thespaceshow.com/shows/2222-BWB-2014-04-06.mp3

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If you are listening to archives & rating programs on live365.com, email me the reasons for your rating to help improve the show.

Guest:  Behrokh Khoshnevis.  Topics:  3D Printing and Contour Craft for Earth & space applications.  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 http://www.onegiantleapfoundation.org/amazon.htm.  For those listening to archives using live365.com and rating the programs, please email me as to why you assign a specific rating to the show. This will help me bring better programming to the audience.

We welcomed Dr. Behrokh Khoshnevis to the program to discuss 3D Printing and Contour Crafting which Dr. Khoshnevis invented.  For more information, visit http://www.contourcrafting.org, http://www.craft-usc.com, and http://www.bkhoshnevis.com.  In our first segment of our 1 hour 45 minute discussion, Professor Khoshnevis provided us with an overview of 3D printing, its history, strengths and weaknesses.  He also took us through the three main methods of fabrication and their subsets.  We talked about state of the art manufacturing processes and several times during our discussion he said 3D printing would never replace modern manufacturing which would always develop along the cutting edge in advance of 3D printing techniques, processes, and speed.  He talked about the materials being used for the printing and the strengths and weaknesses of them.  We began talking about 3D printing in aerospace and he talked specifically about “layering.”  During this segment, he told us how he started looking for new processes for printing large structures which is what contour crafting is so good at doing.  He explained contour crafting in construction and he identified multiple specific uses for it.  Since he had already talked about how slow the process was with 3D printing, he made a point of saying that contour crafting could be hundreds of time faster than just regular 3D printing.  In talking about aerospace, he explained why logistics can be a problem. Later in the segment, we talked about the significant power needs even in space, plus the high use of water.  Because of the water, he told us about substitute methods that made it possible to not use water.  He said meaningful structures could be made such as habs.  He fielded several listener questions, including some that asked about 3D printing being a magic solution, especially for space applications.

In the second segment, our guest was asked about the impact of microgravity and radiation on contour crafting and 3D printing.  Doug called in and talked about inflatable structures rather than construction of structures.  Our guest offered Doug important observations about the inflatable structures.  We also asked about the high demand for water by these printing processes.  Behrokh said that water usage might be a problem but by using sulfur and insitu resources, there would be alternatives to water.  A listener asked him if a spacesuit could be printed.  Our guest said not likely giving the reasons for that thinking.  We talked about 3D printing of food, medical supplies & medicines.  As we were ending, I asked the professor for the level of interest his students show in the contour crafting and 3D printing fields.  His response might surprise you.

Post your comments/questions on The Space Show blog above.  You can email our guest through his websites or me.