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The John Batchelor Show Hotel Mars, Wednesday, 2-27-13 February 28, 2013

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The John Batchelor Show Hotel Mars, Wednesday, 2-27-13

http://archived.thespaceshow.com/shows/1960-BWB-2013-02-27.mp3

Guests:  John Batchelor, Dr. Samuel Kounaves, Dr. David Livingston:  Topics: Curiosity drilling, Mars soil samples, search for organics.  You are invited to comment, ask questions, and discuss the Space Show program/guest(s) on the Space Show blog, http://thespaceshow.wordpress.com. Comments, questions, and any discussion must be relevant and applicable to Space Show programming. Written 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. We do not permit the commercial use of any Space Show program or part thereof, nor do we permit Space Show programs to be edited, placed on YouTube, or other private channels & websites. Space Show programs can be quoted in news articles, papers, academic & research work but must be cited or referenced in the proper citation format. Contact Dr. Livingston for questions about our copyright and trademark policies which we do enforce.  This program is archived on The Space Show website, podcasting, and blog sites with permission from John Batchelor. Please visit the John Batchelor Show website for more information about this fine program, www.johnbatchelorshow.com.

During our 11 minute plus discussion with Dr. Kounaves, we discussed the recently completed first drilling effort by Curiosity on Mars.  Dr. Kounaves brought us up to date with the search for organics on Mars, he talked about the finding of Martian gray soil under the surface and he explained the red oxidized dust color on the surface of Mars.  We also talked about how the earlier rovers have built upon one another in advancing Martian exploration and science up to and including Curiosity.  Our guest suggested we may have to drill deep down in the Martian soil, perhaps 600 feet or more to find organics.  He noted that there are analogs for this here on Earth.

Please post any comments/questions you might have on The Space Show blog.  You can contact any of  us through drspace@thespaceshow.com.

 

Dr. George Robinson, Tuesday, 2-26-13 February 27, 2013

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Dr. George Robinson, Tuesday, 2-26-13

http://archived.thespaceshow.com/shows/1959-BWB-2013-02-26.mp3

Guest: Dr. George Robinson.  Topics:  Human species survival via space habitation BLEO.  Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, http://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.

We welcomed back Dr. George Robinson to the show to discuss the imperative of human space development and the need to migrate to space and BLEO for human species survival.  During the first segment of our 1 hour 55 minute program, Dr. Robinson put forth the basics supporting human species survival through space migration and permanent space habitation.  During this initial segment, he introduced us to many concepts and components that support space migration.  For example, we talked about the need for the creation of a unique private sector, specifically a cyber sovereign company or venture.  Our guest also talked about these issues from the point of view of his being an evolutionary biologist with a background in biology and chemistry and serving as an evolutionary biologist throughout his legal, teaching, consulting and business career.  Listeners asked our guest about space settlement as opposed to space migration and George explained the difference.  Our guest also talked about species extinction and said humans were no exception to the threat of species extinction which is why species survival has become an important issue, one even considered by NASA, DARPA, and other national and international government agencies.  Dr. Robinson introduced us to the Space Propulsion Synergy Team (SPST) and their October 2012 White Paper, “The Justification for Human Space Development and Habitation Beyond Low Earth Orbit: An Invitation for an Open National and Global Dialogue.”  You can download this paper at http://www.eaglehill.us/subscriberSPAEVO/pdfs-policy-series/SPAEVO-policy-1.pdf.  George supports the paper but does not think NASA is in a position to do this and in fact supports replacing NASA with a more nationally directed international space agency working toward species survival and space migration.  The role of those not migrating to space was also discussed as they too have an important part to play in species survival.  As this segment ended, George got a question about the newly proposed human Mars 501 day orbital loop flight.  George suggested better options to support species survival & migration.

In our second segment, Dr. Robinson went into more detail about a cyber sovereign entity and the role of the private sector, plus the need for a unique global private sector. He further developed the role of the population in species survival, specifically for those not migrating to space.  He received questions about current leadership and leadership challenges both here and around the world.  We talked about public perception, species survival and space migration as hard sell issues to the public and our leaders.  The need to have risk capital was discussed.  In the context of risk capital, we talked about U.S. & global economic problems & the risk of excessive government regulation.  As our program was ending, Dr. Robinson and I talked about the white paper recommendation for a national and global dialogue regarding these issues.

If you have comments/questions, post them on The Space Show blog.  If you want to contact Dr. Robinson or the SPST or the Journal of Space & Evolution, you can do so through me at drspace@thespaceshow.com.

AIAA California Space Day, Monday, 2-25-13 February 25, 2013

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AIAA California Space Day, Monday, 2-25-13

http://archived.thespaceshow.com/shows/1958-BWB-2013-02-25.mp3

Guests:  Duane Hyland, John Rose.  Topics:  AIAA California Space Day and the California aerospace industry.  Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, http://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.

We welcomed back to the show Duane Hyland of AIAA and John Rose of Boeing to discuss the AIAA California Space Day scheduled for March 12-13, 2013 at the Capitol in Sacramento, CA.  Our guests went over the agenda which includes models of Curiosity on the Capitol lawn and more, plus meetings with members of the California Assembly and Senate.  If you want more information or are planning to attend, email Duane at duaneh@aiaa.org.  The schedule is for panel discussions and other meetings on Tuesday, a Tuesday evening reception with members of the California legislature and their staffs, and then the following morning, Wednesday, March 13, we will visit legislative offices to talk California space and the AIAA focus.  During our one hour program, Duane and John talked about the AIAA space agenda, both for their national lobby efforts with Congress as well as the state space day meetings.  Listeners wanted to know if AIAA was only traditional aerospace or if it included NewSpace and the emerging space companies.  Our guests had much to say about this as did I.  We also talked about the importance of the California aerospace industry to the entire aerospace industry in the U.S. and even globally.  We talked about disturbing trends in our national aerospace industry as well as in the California aerospace industry and the importance of events such as Space Day.  We talked about sequestration and its potential impact on space, both for DOD and NASA.  Our guests were asked about AIAA educational outreach to schools and different grades and near the end of our discussion, I asked if there was a process to undertake an outcome evaluation for the effectiveness of California Space Day and similar programs across the country.

If you have questions or comments, you can post them on The Space Show blog but if they pertain specifically to Space Day this year from March 12-13, please email Duane Hyland using duaneh@aiaa.org.

Dr. Doug Plata, Sunday, 2-24-13 February 25, 2013

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Dr. Doug Plata, Sunday, 2-24-13

http://archived.thespaceshow.com/shows/1957-BWB-2013-02-24.mp3

Guest:  Dr. Doug Plata.  Topics:  Taking action on one’s space advocacy ideas.  Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, http://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.

We welcomed Dr. Doug Plata to the program to discuss taking action on one’s space advocacy ideas and plans.  For examples of this, visit Dr. Plata’s  www.lunarcots.com for more information on his Lunar Cots idea and to sign his Lunar Cots petition which he talked about throughout our two hour program.  Dr. Plata said he was not around in the Apollo era plus he only started getting interested in space about 3 years ago.  I commented that he did not bring to the table disappointment and unrealized, perhaps even foolish expectations that many of us who were around during Apollo have experienced, including an expectation of lunar colonies and trips to Mars by now.  Doug had a clean slate to build upon, no legacy issues or unrealized expectations or anything like that.  Doug said his interests are to go BLEO but how?  Based on his analysis, he decided lunar development was first, researched Cislunar development, and developed his Lunar Cots idea based on successes for NASA public/private partnerships such as COTS.  From there, he developed the idea of the Lunar Cots Petition for people to sign and to eventually give NASA and other key policy makers.  He also mentioned that were he to advocate something, he felt it was his responsibility to technically know about the issues so he could accurately represent them to people.  He also said that one person, even with very small steps, could make a difference and he clearly walks that talk.  Part of his Lunar Cots idea addresses the need for a Cislunar Transportation System.  The first John called (from Atlanta) and raised the question about there being sufficient water ice on the Moon.  In his response, Doug referenced the LCROSS mission.

In our second segment, Doug took calls and listener emails.  The discussion about there being sufficient lunar water ice on the Moon continued.  He also talked about automatic equipment for lunar mining as compared to telerobotics.  Doug was asked who he talks with about Lunar Cots and the petition. We heard everyone, from the general public to space enthusiasts.  In talking about space advocacy in general, he said there were many paths and people had to find a path that made sense to them & then figure out a way to act upon their individual advocacy.  John called from Florida and asked about heavy lift and fuel depots.  Another Jon called from New Jersey to ask about doing something, anything, and the use of prizes. Even Charles Pooley got in on the discussion to talk about starting small and his Microlaunchers concept.  Toward the end, Doug was asked by a medical school student why he was not doing aerospace and human factors space medicine.  Also during this segment, both Doug and I talked extensively about finding something to do regarding one’s advocacy, even if it involved stepping out of one’s comfort zone and seemed to be too small an effort.  The reality is that to make a difference, even a small effort can be and is usually beneficial.

Please post your comments/questions on the Space Show blog.  You can email Doug through the address he provided on air or through me.

Dr. John S. Lewis, Wednesday, 2-20-13 February 24, 2013

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Dr. John S. Lewis, Wednesday, 2-20-13

http://archived.thespaceshow.com/shows/1955-BWB-2013-02-20.mp3

Guest:  Dr. John S. Lewis.  Topics:  The Chelyabinsk meteorite, Asteroid 2012 DA14, the Chinese program and more.  Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, http://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.

We welcomed back Dr. John Lewis to discuss recent meteorite impacts, NEO flybys, asteroid minding, the Chinese space program and more.  In the first segment of our 90 minute program, Dr. Lewis talked briefly about accepting the position of Chief Scientist for the new company, Deep Space Industries.  He also spoke in general terms about this emerging industry.  Our initial caller asked Dr. Lewis about his writing science fiction so you will hear about that as well.  We then turned our attention to the Chelyabinsk meteorite and the flyby of Asteroid 2012 DA14.  Visit www.johnslewis.com for detailed information on these events plus much more.  The Russian meteorite  was estimated to be about 10,000 tons or the mass of a U.S. Navy cruiser.  Dr. Lewis explained why it was not detected before hitting the atmosphere.  We then speculated on what would have happened had it come in over a large city such as London.  Dr. Lurio called in to talk about his joining Deep Space Industries as the Chief Scientist.  Charles also wanted to know about the previous announcements that he would be an advisor for Planetary Resources.  Dr. Lewis explained this and corrected misunderstandings regarding the issues addressed by the question.  Jack sent in an email seeking mining comparisons here on Earth to those in space given his being in mining country in Virginia.  Another listener asked about the potential dollar value of the Chelyabinsk meteorite.  In his response, John suggested the best value for using asteroids in space re ISRU.  Another question came up about hollowing out an asteroid and using it for HSF travel.  Dr. Lewis talked about this idea dating back to 1918 and Robert Goddard.  Kelly asked about moving an asteroid to a low lunar orbit and if a human mission to a NEO was a good stepping stone for a human flight to Mars. John had much to say to us on both of Kelly’s questions.

In the second segment, we opened with my asking John about the Chinese space program and their high launch rate.  Don’t miss John’s comprehensive answer about both the Chinese military space program and their quasi-civil space program.  It was most informative.  Next, John told us about an incident when he was 13 years old living in a Boston suburb with what was probably a meteorite coming in overhead that disturbed his entire neighborhood.  It’s a fascinating story that illustrates events like we just saw in Russia are fairly common throughout history.  Don’t miss this story!  Another topic in this segment was the low quality science and news reporting in this country. Dr. Lewis expressed concern about this with some explanations to help us understand the reality of today’s news reporting services.  Listener Bruce sent in an email asking about nuclear explosions to deflect a larger asteroid and doing such tests in space.  Again, Dr. Lewis had much to say and offer us on this issue.  This led to a discussion on detecting Earth-bound NEOs, what sizes we can and cannot detect today, the amount of warning time we might have and more.  Near the end of our discussion, Emma in NYC sent in a note asking John what the Chelyabinsk meteorite  would have looked like had it come in over a Martian settlement.  John’s response was fascinating and very descriptive.  Pooley sent in an email with the classic NASA NEO website, http://neo.jpl.nasa.gov/ca.

Please post your comments/questions on The Space Show blog.  You can reach Dr. Lewis through me at drspace@thespaceshow.com or his own blog per above.

Interorbital Systems with the Millirons, Friday, 2-22-13 February 23, 2013

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Interorbital Systems with the Millirons, Friday, 2-22-13

http://archived.thespaceshow.com/shows/1956-BWB-2013-02-22.mp3

Guests:  Randa and Rod Milliron.  Topics:  Interorbital Systems engine tests, personal satellite kits, updates, rocket building R&D.  Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, http://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.

We welcomes Randa and Rod Milliron back for this 1 hour 36 minute discussion about their company, Interorbital Systems (IOS), rocket engine development and testing, and much more.  Visit their website at www.interorbital.com for more information and details of topics discussed today.  We started out by getting details about the IOS static engine test in Oct. 2012.  Our guests talked about the test and described their engine and the Neptune modular launch system.  Rod talked about using hypergolic propellants and why they chose to do so, plus our guests went over the capability of the Neptune rocket depending on how many modules and stages were used.  They also talked about adding a stage for the lunar lander as they are a GLXP participant.  We talked about the GLXP, getting secondary payload rides to the Moon or using a dedicated launcher such as the Neptune. Our guests described their plans for doing a sea launch and why, probably in the Pacific Ocean near Hawaii.  They also talked about having spaceport launching capabilities as well.  Listeners asked about demo flights and time lines, plus suborbital test flights.  Another listener asked about the plans for Olav Zipser to jump from a rocket in light of the Red Bull success.  Wes from Tampa emailed in about suborbital flights offering a space view for sensor testing, retrieving payloads, & testing low gravity manufacturing/3D printing.  IOS suborbital flights are their test flights.  Our guests had much to say about these matters, especially retrievable payloads.  Blair emailed in about IOS due diligence, their launch track record, and their consumer sales.  We then talked about the IOS personal satellite TubeSat and CubeSat kits. Wes called in to talk about his positive experiences given he has purchased one of the kits.  I also asked Wes about his due diligence on IOS before buying the kit.  Listen to how our guests and Wes responded to this line of questioning.

In the second segment, I asked about engine test regulations & required permits for testing at Mojave.  Randa and Rod mentioned complying with ITAR because they have foreign sales of the personal satellite kits.  They also talked about a 4H group on the Utah Colorado border building a personal satellite and the educational outreach this involves with the Ute Native Americans and others.  The Millirons were asked about their being considered fringe by some in the space community.  Note what they said about this and about attending space conferences.  A question came in as to why they were not using a hybrid engine.  Rod had lots to say about hybrids, don’t miss his comments.  Our discussion concluded with a summary of their forthcoming rocket plans and development program.

Please post your comments/questions on The Space Show blog.  You can reach our guests through their website or through me at drspace@thespaceshow.com.

The John Batchelor Show “Hotel Mars,” Wednesday, 2-20-13 February 21, 2013

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The John Batchelor Show “Hotel Mars,” Wednesday, 2-20-13

http://archived.thespaceshow.com/shows/1954-BWB-2013-02-20.mp3

Guests:  John Batchelor, Dr. William Farrand,  Dr. David Livingston:  Topics: Ten years with the Mars rover Opportunity.  You are invited to comment, ask questions, and discuss the Space Show program/guest(s) on the Space Show blog, http://thespaceshow.wordpress.com. Comments, questions, and any discussion must be relevant and applicable to Space Show programming. Written 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. We do not permit the commercial use of any Space Show program or part thereof, nor do we permit Space Show programs to be edited, placed on YouTube, or other private channels & websites. Space Show programs can be quoted in news articles, papers, academic & research work but must be cited or referenced in the proper citation format. Contact Dr. Livingston for questions about our copyright and trademark policies which we do enforce.  This program is archived on The Space Show website, podcasting, and blog sites with permission from John Batchelor. Please visit the John Batchelor Show website for more information about this fine program, www.johnbatchelorshow.com.

During our 11 minute plus discussion with Dr. Farrand, we celebrated ten years of the Mars rover Opportunity exploring and doing science on the Red Planet.  Opportunity has outlived its fellow rover, Spirit, has traveled about 22 miles and been engaged in some amazing discoveries and research.  Our guest talked about the instruments that are still working, those that have quit, what it is finding and how it can compliment Curiosity.  We also talked about the demise of Spirit and how that happened.

Please post any comments/questions you might have on The Space Show blog.  You can contact any of  us through drspace@thespaceshow.com.

Open Lines, Tuesday, 2-19-13 February 20, 2013

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Open Lines, Tuesday, 2-19-13

http://archived.thespaceshow.com/shows/1953-BWB-2013-02-19.mp3

Guest:  Open Lines with Dr. David Livingston.  Topics: Carnival Cruise lines & informed consent, space radiation, nanosat launchers, & much more.  Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, http://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.

     We started our one hour fifty-one minute Open Lines discussion by my throwing out some suggested topics which included recent USA Today polls on human spaceflight to Mars and informed consent using the recent Carnival Cruise Line cruise from hell as a possible indicator of what may happen in the space tourism industry.  Dave, our first caller, talked about the new efforts to create NTRs and have nuclear propulsion using tungsten as the fuel base. Dave had lots to say about the tungsten as well as traditional fuels.  I next read a listener email about an NCIS Los Angeles 2011 episode about satellite sale to a foreign party and ITAR,.  Next, we talked about another listener email calling our attention the SpaceWorks Nanosatellite Market Report, and then up next was the CNN interview with Bill Nye and the CNN anchor asking Bill if global warming was causing the NEOs and events like the Russian meteorite.  Thanks to Tim for sending in the URL for the interview which you can see and hear at  www.youtube.com/watch?v=ObU7awpJctQ.

     In our second segment, Pooley called in to support my informed consent and Carnival Cruise Line comments plus he again told us why he did not think the space tourism industry would be successful.  Charles also talked about the Russian meteorite and the need for a dedicated cubesat or nanosat launcher over and above flying small sats as secondary payloads. In addition, we talked about the Google Lunar XPrize and the absence of launch contracts for the ride to the Moon.  Tim called to talk about the nanosat launch industry, we talked about the upcoming Virgin Galactic1 small satellite launchers and deep space radiation and HSF.  The dedicated small sat launcher reminded me of an Oct. 13, 2008 Jurist Space Review article proposing a university consortium for such a launch system and the condemnation he got for his proposal.  Dr. Jurist called in to talk about his proposal and the response.  You can read his 2008 Space Review article here:  www.thespacereview.com/article/1228/1.  I also asked Dr. Jurist about Tim’s radiation comments and he explained this particular radiation issue to us. He also said there was a real lack of valid data points so much of what Tim, John and I were talking about was simply an unknown or extrapolated from data pools that may be quite different from those at the lower end of exposure.  In discussing this subject, Dr. Jurist talked about American radiation standards, astronauts as radiation workers, and the European standards.  At the end of the program, Tim called to talk about the Carnival Cruise Line incident and informed consent. Tim suggested tort reform with caps but also put forth a novel behavioral theory and I told him I would absolutely go on the five day cruise from hell to earn a million dollars!

     Please post your comments/questions on The Space Show blog.  You can email any of the participants in this program through me at drspace@thespaceshow.com.

Dr. John Hunter, Monday, 2-18-13 February 19, 2013

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Dr. John Hunter, Monday, 2-18-13

http://archived.thespaceshow.com/shows/1952-BWB-2013-02-18.mp3

Guest:  Dr. John Hunter.  Topics:  Hydrogen gas gun technology and capability, microwave propulsion for delivering cargo.  Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, http://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.

     We welcomed back Dr. John Hunter for a fresh look at hydrogen gas gun propulsion technology and capability, microwave propulsion for delivering propellant and delicate cargo, cubesat launchers, and more.  During the first segment of our 85 minute program, Dr. Hunter briefly explained his departure from QuickLaunch and the viability of impulse launch with the hydrogen gas gun.  He explained how the hydrogen gas gun works which as you will hear is very simple.  Dr. Hunter say that with the gas gun, there could be very high payload fractions into the 20′s.  Our guest was asked about total costs for the hydrogen gas gun which he referred to as installed costs.  Listeners asked him to describe the physical characteristics of the gun and we talked about how many times it could be used without needing refurbishing of some kind.  Dr. Hunter also talked about the high pressures and we compared the gun to the old U.S. Navy battleship 18 inch gun from the WWII era.  A listener asked if the gun would make a good weapon.  The answer was no.  John was asked where the gun might be located and talked about Adak & Kodiak, Alaska plus other possible sites in the Lower 48.  Listeners then asked if the Alaskan heavier cold air was a factor in using the gun.  We learned that the differences between cold air and warm air were minor.

     In our second segment, Dr. Hunter introduced us to microwave propulsion launch.  He spent some time describing how microwave launch would work and even talked about using consumer quality magnetrons from microwave ovens.  In response to listener questions, he talked about demo launches and a Cal Tech student’s PhD thesis on the subject.  Later in the segment, our guest was asked about using an impulse launch system as a cubesat launcher given the rise in popularity along with growing demand for cubesats.  Our last discussion topic was the use of Kickstarter for funding emerging and startup space projects.  Dr. Hunter said it offered real possibilities and advantages for regular people to participate in space companies and projects, but he also issued a warning for people to be alert to not be taken given the lack of oversight with crowd sourcing funding projects in general.

     Please post your comments/questions on The Space Show blog.  You can contact Dr. Hunter through me at drspace@thespaceshow.com.

Space Show Webinar with Dr. Haym Benaroya, Dr. John Jurist, Sunday, 2-17-13 February 14, 2013

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Space Show Webinar with Dr. Haym Benaroya, Dr. John Jurist, Sunday, 2-17-13

Behind The Scenes Engineering for Space Structures and Infrastructure

http://archived.thespaceshow.com/shows/1951-BWB-2013-02-17.mp3 (audio only)

http://vimeo.com/channels/thespaceshow  — Video

Guests:  Dr. Haym Benaroya, Dr. John Jurist.  Topics:  Engineering space structures, hardware, and habits for LEO, the Moon, and Mars.  Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, http://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.

     We welcomed our main guest Dr. Haym Benaroya and co-host Dr. John Jurist to our first Space Show webinar for 2013.  As Dr. Benaroya is a mechanical and aerospace engineering at Rutgers University and well known for lunar architecture and engineering structures, we asked Dr. Benaroya to take us behind the scenes for a look into the engineering needed to have something in LEO, on the surface of the Moon, or Mars.  Dr. Benaroya prepared a special .pdf presentation for us which is on The Space Show blog per above.  I urge you to follow along with the .pdf slides as Dr. Benaroya discusses space engineering.

     During the first half of this two hour five minute webinar, Dr. Benaroya started out by discussing some of the basic issues in space engineering including gravity.  He started with Slide 2 and talked about each item and the engineering considerations associated with it, both here on Earth and in space.  As you will hear, not only are the engineering considerations significantly different between Earth and space, but many are also different from one another depending on if the project is in LEO, on the Moon or Mars.  Make sure you follow along with him using his slides.  Listeners, Dr. Jurist, and I asked Professor Benaroya many questions about lunar based habitats, LEO habitats, shapes, pressure forces, regolith issues, heat issues, and more.  Referring to Slide 5 Dr. Benaroya talked about gravity issues and concerns.  Slide 6 was about lunar dust issues, tidal forces, seismic concerns.  We compared seismic reinforcing in San Francisco or other terrestrial earthquake zones to what would be needed on the Moon.  The subject of engineering for extreme and rapid temperature changes came up for LEO, the Moon & Mars.  Dr. Benaroya suggested many times during our discussion that we would need to use ISRU given the high cost of getting materials to space.

     In this first segment, other topics included the potential afforded lunar engineers by having a Lunar Space Elevator available and even a lunar bulldozer!  The subject of heavy lift came up as it always does on these programs and all of us talked about fewer larger launches as compared to many smaller launches, even using depots. Doug called in to argue for the Falcon Heavy.  As Dr. Jurist pointed out, putting mass on the Moon is about 10% give or take of the rockets IMLEO mass capability.  In responding to Doug, both Dr. Jurist & Dr. Benaroya illustrated the difference between the Falcon Heavy and SLS regarding landing a specific mass on the Moon.  Just before the segment ended, in responding to a question from Dr. Jurist, Professor Benaroya suggested that each person on the Moon would need about 20 times his or her weight in mass on the lunar surface for around a six month stay.  To determine the most cost effective way to get the needed infrastructure and mass safely to the lunar surface, lots of issues go into the trade studies to determine the best approach, including launch vehicle choice.

     In the second segment of our webinar, we took a call from John in Florida who wanted to ask Dr. Benaroya about his earlier comment about using magnesium on the Moon as a type of rebar in lunar concrete.  We next talked about reliability, power sources, competing technologies and design issues.  One of the issues brought up was the need to design the structure to be successful during the design phase, not just the completion stage. This was a most interesting discussion, don’t miss it.  One of the points he made was that we can’t test structures in space like we can on Earth so engineering design issues must be considered & dealt with for space that would not be encountered on Earth.  He talked about the preferred shape for a lunar structure and advocated the arch as in Slide 21.  Our professor then talked about design standards here on Earth, the fact that we have none for space so all of the Earth standards are extrapolated to work in space though we have no history for doing this. Also, he talked about using four to five times for a safety factor where on Earth the safety factor might be more like 1.5 or 1.6.  We also talked about confidence intervals. While on Earth, something may be done with a CI of 95% or higher, he suggested that on the Moon or in space the CI would more likely be pretty low, around 70 or maybe 80%!  He cited dust design as an example of what he was talking about as dust is not a big factor in terrestrial engineering but it will be on the Moon or Mars.  Doug called again to advocate inflatable structures rather than the engineering and building of structures.  Prof. Benaroya suggested that they may be used early on but that most of the studies show their primary advantage to be in transportation because on the surface they have to be made rigid.  This is another discussion you don’t want to miss.  Near the end of our webinar, advanced manufacturing for the future was discussed.  Dr. Benaroya talked about advances in robots, layered manufacturing and 3D printing. He explained how these can really change the game for space structures, engineering, manufacturing, and costs.  Near the end, questions came in as to why the Moon instead of Mars, the 7-8 year time lines mentioned by the lunar companies and Mars One as well as wanting to know if space engineering was strictly an academic project or if it was being worked real time by companies that can actually make hardware.  As you will hear, it’s a combination of both at this time.  Dr. Benaroya kept talking about time lines 2-3 decades long and I asked him about speeding that up and the short time lines for the lunar and Mars One group.  He did not think the shorter time lines were feasible.  See what you think after you hear his and Dr. Jurist’s comments on emerging company time lines.  Dr.  Benaroya concluded by pointing out the popularity of these subjects in both undergraduate and graduate classes and the importance of student research and its benefits.

     Please post your comments/questions on The Space Show blog above.  To email Dr. Jurist, do so through me at drspace@thespaceshow.com.  You can contact Dr. Benaroya at benaroya@rci.rutgers.edu.

Here is Professor Benaroya’s webinar presentation material:

Space Show Prof. Benaroya Webinar Lunar Structures Engineering 2-17-13

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