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Dr. Brian Laubscher, Sunday, 6-8-14 June 9, 2014

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Dr. Brian Laubscher, Sunday, 6-8-14

http://archived.thespaceshow.com/shows/2258-BWB-2014-06-08.mp3

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Guest:  Dr. Bryan Laubscher.  Topics:  Carbon nanotubes, new manufacturing, Space Elevator.  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. Bryn Laubscher back to the program for our 2 hour 22 minute discussion about carbon nanotubes and the Space Elevator.  During our first segment, Dr. Laubscher talked about carbon nanotubes, the manufacturing process, how to move the process and technology forward, end uses for the product, possible timelines for advancement and the current day use of Chemical Vapor Deposition (CVD) in the process.  Bryan talked about the need to find a better process for making carbon nanotubes than CVD.  Later is this segment, Dr. Laubscher was asked about the potential relationship to space other than with the space elevator.  This was an interesting discussion , don’t miss it.

In our second segment, Bryan talked about how hard and challenging the space elevator was and later in the segment, due to a call from Pooley, we went through many of the top challenges faced by the elevator with a status report on each one.  As this segment was opening, I did ask Bryan for a time line for space elevator advancement.  Our guest suggested that at some point, there would be significant demand for the elevator.  Next, we talked about the upcoming International Space Elevator 2014 Conference to be held at the Museum of Flight in Seattle, August 22-24, 2014.  For conference info, visit http://www.spaceelevatorconference.org. John from Ft. Worth called to talk about materials, composites and much more. We also talked about the strength needed for the elevator ribbon and John asked about SSTO.  Blaze emailed us about nuclear waste and Bryan had an interesting take on it. This was another valuable discussion, don’t miss it.  Dr. Laubscher talked about ribbon length, characteristics, strength needed, and its location in space, plus the counter weights it would need.  Adrian emailed several questions to us about the ribbon breaking and related issues.  He also asked our guest radiation issues.  Doug emailed about ways to climb up and down the ribbon.  Some of the other issues that came up were wind, lightening, ribbon oscillation, space debris, policy & regulatory issues.  As our program was ending, Bryan offered us words of wisdom and said his company website was http://www.odysseustech.com.  In addition, Dr. Peter Swan emailed us about his paper on the elevator which you can download and read at  http://www.virginiaedition.com/media/spaceelevators.pdf.

Post your comments/questions on TSS blog.  You can reach Dr. Laubscher through his website or me.

Dr. John Jurist, Sunday, 2-16-14 February 17, 2014

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Dr. John Jurist, Sunday, 2-16-14

Artificial Gravity

http://archived.thespaceshow.com/shows/2188-BWB-2014-02-16.mp3

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Guest:  Dr. John Jurist.  Topics: Artificial gravity, spinning, tethers, rotation rates, the gravity gradient & more.  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.

We welcomed back Dr. John Jurist for this two hour discussion on all aspects of artificial gravity.  Note that Dr. Jurist prepared presentation material for this program which you will find on the archived blog entry for this discussion.  Also, I recommend you read the excellent article by our UK guest, inventor, & friend, Robert Walker, “Can Spinning Habs Solve the Zero g Health Issues?  Can Humans Live in Mars or Lunar g? Why Nobody Knows.” (see www.science20.com/print/129424).  During our first segment, Dr. Jurist introduced us to the basics of artificial gravity including the Coriolis effect, the gravity gradient & the info needed from in-space artificial gravity R&D.  Several studies including one by UC Irvine were mentioned, plus other bed rest studies.  He also talked about the Wyle Centrifuge studies which used a short arm for experimentation.  Our attention turned to the presentation material on TSS blog titled “Artificial Gravity Comments–JmJurist.”  Dr. Jurist took us through the tables & charts on his two page document.  He was asked about gender & age differences with gravity as well as small rodent/mammal ISS experiments now or in the future.  Our first caller was John from Ft. Worth who clarified some of his comments from the last Open Lines show plus he talked about the hardware, infrastructure, & engineering issues for in-space experiments.  We talked about the use of tethers & the relationship with microgravity & radiation issues.  With our caller still with us, Jenna emailed asking if either Mars One or Inspiration Mars would provide the needed research that never seems to be done by NASA or others.

In the second segment, Doug from S. California called.  He talked about his T frame tetherball type structure concept as an interim artificial gravity tool but said it was not a long term solution.  He also inquired about tethers, then he wanted to know about the mass of possible tether cables as well as potential materials that could be used for in-space tethers.  Doug then described a reference mission using a long arm centrifuge for the surface of the Moon.  Doug described a very good concept and Dr. Jurist had much to say about it.  We had quite the discussion on possible implementation strategies and the roadmap from theory to operations given our current policy & economic environment, plus the track record on other large projects that never made it.  With Doug on the phone, Ft. Worth John emailed to inquire about stability issues and tidal forces on the tether.  Both Dr. Jurist & Doug made a pass at providing John an answer to his question.  In his closing statement, our guest went over some basic advantages with a tether, the problems of the gravity gradient & the fact that the issues for colonization were very different than for experiments or a reference mission.

Please post your comments/questions on TSS blog above.  If you want to reach Dr. Jurist or our callers, do so through me.

Dr. Bryan Laubscher, Monday, 7-16-12 July 17, 2012

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Dr. Bryan Laubscher, Monday, 7-16-12

http://archived.thespaceshow.com/shows/1815-BWB-2012-07-16.mp3

Guest:  Dr. Bryan Laubscher.  Topics:  The Space Elevator and the upcoming annual elevator conference.  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. We welcomed back Dr. Bryan Laubscher for our annual space elevator update program.  Our first order of business was to discuss the upcoming Space Elevator 2012 conference.  Check it out at www.isec.org/sec.  Registration, hotel, programming, speaker, and session information is provided on the website.  Dr. Laubscher noted some differences this year including its location, the Seattle Museum of Flight.  Also, the Family Science Fest on the conference first day.  Bryan highlighted some of the sessions including those dealing with elevator operations and alternative launch options including Stratolauncher.  We fielded several email questions from listeners and then Michael called in to ask about security requirements for the elevator.  This turned out to be a most interesting discussion but one leaving us with lots of unanswered questions. In discussing elevator security, we talked about international law, the proposed Law of the Sea Treaty, offshore oil platforms, territorial water issues, DOD and department of Navy defense actions, and more.  Tony emailed in a series of questions including one that asked about the rotovavtor.  Later, I asked Bryan if elevator security should be a taxpayer responsibility and he said yes, noting that revenues from the elevator along with taxes paid would be in excess of security costs.  We then talked about the elevator being an international project or an American project.  Bryan preferred American but we talked about both sides of this issue.  Bryan also had lots to say about materials and the CNT ribbon.  He told us about the detangler and the size of the ribbon, plus the incremental plan in ribbon development.  We asked Bryan timeline questions and it was also said that the biggest problem other than materials waiting to be solved was the surface to LEO transportation.

In our second shorter segment, we talked about inspiration, the need to learn systems engineering, and the absence of congressional political support for the elevator.  A listener asked about the payload capacity which Bryan said was 20 tons.  He mentioned spinoff technology including energy storage.  Terry wanted to know how scalable the elevator concept was and Bryan mentioned progress with climber reusability issues. In our summary, he said the overall biggest challenge still remained the materials.

Post your comments/questions on The Space Show blog. If you want to contact Dr. Laubscher, send your email to me for forwarding.  For more info on the conference, use www.isec.org/sec/index.php/contact-us.

 

Michael Laine, Tuesday, 3-20-12 March 21, 2012

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Michael Laine, Tuesday, 3-20-12

http://archived.thespaceshow.com/shows/1739-BWB-2012-03-20.mp3

Guest:  Michael Laine.  Topics:  Lunar space elevator, general space elevator discussion.  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. We welcomed Michael Laine for updates on his company LiftPort & their latest space elevator plans.  Michael started the discussion with an overview of his involvement in the space elevator project, his company LiftPort up through its fiscal problems, the reestablishment of the company with intellectual property, & a lunar space elevator study from 2010-2011.  He brought us current with LiftPort plans into 2012 plus what the company & his team have planned for the balance of the year.  Michael talked about his team, issues relating to a lunar space elevator, how the Moon rotates/spins differently than the Earth, & how an elevator would be different than an Earth-based elevator which he said cannot be built at this time.  He made the point that the lunar elevator could be built now, does not need a carbon nanotube ribbon & will likely go from Sinus Medii on the Moon to an orbiting spaceport at the Earth-Moon L1 point where there might be a Bigelow station with EELV or Falcon 9 flights coming up from Earth.  He also said the early flights would be robotic but that both capability and capacity would expand to include humans.  He was of the opinion that the basic lunar space elevator could be completed within a decade.  Eric called in to challenge some of Michael’s technical analysis.  Michael offered to send the math analysis of the project to anyone requesting it.  His email address can be found at the end of this summary.  Later in this hour long segment, I asked Michael about business issues, the market, financing (public, private, both), ROIs, & more.  As you will hear, this part of the LiftPort plan is unfinished.  Michael’s team has been confirming the math analysis for the project & has yet to refine their business plan/due diligence analysis. When pressed, he said the cost might be around $700-$800 million but they were increasing that to $1.5 billion to be a bit conservative.  He also said this was for a small elevator with a payload capacity of 40-240 kg.  In speaking about the commercial aspects of the project, he repeated many times throughout our discussion that they were focused on cash flows and the commercial aspects but first they needed certainty about reaching the technical “go” point.

In our second segment, Michael continued his theme that they do not yet have the business plan components in place.  I then asked if this was nothing more than a feasibility project?  That seemed to summarize our discussion so far.  Michael did point out that LiftPort already had two intellectual property (IP) assets so the company was positioned to make money even before the elevator project got going beyond the study phase.  I pressed him for his public finance plans.  His idea was based on the Railroad Acts which included bond sales guaranteed by the government with the government providing sufficient business revenues to support the bond guarantee.  A listener brought up the issue of space debris & climbers.  Michael pointed listeners to their YouTube channel to see their climber in action.  Mars elevators were mentioned near the end of the program as well as LiftPort internships.  We also talked about the recent Japanese company’s announcement of their own elevator plans (Obayashi Corp.).  Michael also suggested the space elevator conference (http://spaceelevatorconference.org).

Please post your comments/questions on The Space Show blog URL above. You can email Michael Laine at laine@liftport.com).