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Drs. Jim Logan and John Jurist, Sunday, 7-13-14 July 14, 2014

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Drs. Jim Logan and John Jurist, Sunday, 7-13-14

http://archived.thespaceshow.com/shows/2278-BWB-2014-07-13.mp3

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Guests:  Dr. John Jurist, Dr. Jim Logan.  Topics:  EVAs, spacesuits, Moon, Mars, radiation, Aquarius HSF launch vehicle Space Enterprise Institute.  Please direct all comments & questions regarding Space Show programs/guest(s) to the Space Show blog, http://thespaceshow.wordpress.com.  Comments & 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 &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 both Dr. John Jurist and Dr. Jim Logan back to the show to discuss spacewalks (EVAs), spacesuits, human missions to the Moon and Mars, to the Martian Moon Deimos, the newly created Space Enterprise Institute, & the new Aquarius Reusable Human Spaceflight water based launch vehicle.  During the first segment of our 2 hour 5 minute program, our guests started talking about EVAs.  Early in the discussion, Dr. Logan provided us with important & interesting statistics regarding EVAs, then we discussed the challenges with them and spacesuits.  We talked at length about the difference in EVAs and spacesuits for the Moon, LEO, asteroids, & Mars.  We also talked economics for spacesuits given the need for a specific spacesuit depending on the destination/mission.  We talked about new designs for one size fits all & for mitigating dust problems.  Jim talked about the medical complications regarding both lunar and Martian dust.  Our guests then suggested that EVAs will likely be phased out for robotic missions.  Doug asked several questions about this via email.  Also, Jim suggested that EVAs will evolve to the concept of Forward Deployed Humans in the Loop for Telerobotic Operations.  This concept was discussed several times throughout our program.

In our second segment, Jim started with an announcement about the Space Enterprise Institute (SEI).  When it goes live in the next week or so, I will announce it on the show so you can follow it  He explained SEI, its purpose & goals.  He then talked about the concept that both Jim and Dan Adamo have developed over the past few years, Aquarius which is a reusable water-based interplanetary HSF transport.  As soon as the SEI website is online, listeners will be able to download their peer reviewed paper for free.  During this segment, Jim talked about Aquarius, John added in some details, we talked about the need for nuclear electric propulsion and why, plus the role of water with this launcher.  Both our guests explained the advantages of Deimos for the early missions, plus the return shielding and reusability as the return goes to a lunar orbit using existing water.  Radiation shielding was talked about, including the needed water and needed Radiation Protection (RP) levels.  John pointed out one advantage of Aquarius was the use of an open loop life support system.  John in Ft. Worth called about the temperatures that Jim said were needed.  Jim explained the need for 3,000 degrees C.  Both guests offered closing comments about EVAs & the direction we might be heading toward the forward deployed humans concept.  Both guests said the telerobotic concepts discussed would reduce risks, timelines, & overall mission costs.

Post your comments/questions on TSS blog.  You can reach our two guests through me.

Dan Adamo, Dr. Jim Logan, Dr. John Jurist, Tuesday, 11-19-13 November 19, 2013

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THE SPACE SHOW CLASSROOM

Dan Adamo, Dr. Jim Logan, Dr. John Jurist, Tuesday, 11-19-13

http://archived.thespaceshow.com/shows/2125-BWB-2013-11-19.mp3

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Guests:  Dan Adamo, Dr. Jim Logan, Dr. John Jurist.  Topics:  “Trajectory Challenges Faced By Orbiting Infrastructure Supporting Multiple Earth Departures For 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. In addition, please remember that your Amazon purchases can help support The Space Show/OGLF. See www.onegiantleapfoundation.org/amazon.htm.

Welcome to this special Space Show Classroom program with Dan Adamo, Dr. Logan, Dr. Jurist, and myself.  There was no break during this 2 hour 21 minute discussion which at times was very technical.  For those of you interested in missions to Mars, orbiting space infrastructure including depots, Earth & LEO departure points, mission and launch trades, payload issues and trades, radiation concerns, and more, you will find this discussion to be extremely informative and educational.  Guest Dan Adamo took us through the charts and graphs which you can access on either The Space Show Blog or The Space Show Classroom blog ((see http://thespaceshow.wordpress.com and http://spaceshowclassroom.wordpress.com).  Access the document ReuseForMars to follow the MP3 audio transcript. The other document on the blogs is a longer white paper version of the .pdf we used for last night’s discussion.  Dan introduced the topic to us, talked about his tangential work in this area at JSC last summer and the space community interest in orbiting infrastructure, especially fuel depots.  Dan then took us through the .pdf document discussing and explaining each chart and graph.  Rather than report on his page by page discussion, note that Jim, John, and I asked lots of questions per each chart and graph as did listeners by email and later in the discussion by phone.  Some of the main points and take aways from this discussion focused on inclination, launch location, penalties and advantages relating to orbiting infrastructure reuse for Earth departures to interplanetary destinations. For example, Russian launch sites are far to the north and will not be as efficient for Mars launches as sites to the south.  But as Doug discovered when he asked about equatorial launches, they benefit from a boost due to the inertial rotation of the Earth for higher initial launch speed, but otherwise there is no real benefit from the equatorial launch because minimum Earth orbit inclination is imposed by interplanetary geometry.  Another important point had to do with the reuse of orbital infrastructure.  As you will hear, it’s virtually worthless to reuse infrastructure in low Earth orbit to support Mars mission departure, including a depot, unless it can be repurposed for something else other than a Mars mission.  Don’t miss Dan’s explanation of this.  While we talked about Earth departure windows for Mars at two year intervals, we learned that not all these windows are equal.  Here, using the tables in Dan’s document, we were able to see just how unequal the Earth departure windows can be.  We talked a lot about Elliptical Earth Parking Orbit (EEPO) and the relationships with apogee and perigee for our payload departures for Mars.  Later, Dan outlined how we can “store” the cryo in the upperstage of our rocket as kinetic energy in the EEPO shortly after launch, a way to store the cryo energy without having to mitigate boiloff or transfer it between spacecraft.  Much was said about radiation and when you go through the trajectories and see them plotted as Dan has done, we learned that not all trajectories are equal as to radiation exposure.  Other important elements of our discussion that we focused on included the trans-Mars Injection (TMI) and asymptotic Earth departure velocity (v_infinity).  Listener Jimmy emailed us about another paper by a Goddard team that Dan was familiar with and he used some of their data and research.  Access their poster at www.lpi.usra.edu/sbag/science/NHATS_Accessible_NEAs_Summary.png (note you may need to cut & paste the URL in your browser).  As Dan & our Classroom panel went through charts, graphs, & tables, we applied the information to launches Earth departures in 2020 and 2022.  It was valuable to see how the constraints change, not always for the better either.  Note that we started with a 400 KM orbit but later dropped it to about 340 km above earth.  I suspect you will find the changing constraints and parameters to be more than interesting.  Near the end, Doug called in to ask about the reuse of the repurposing orbital infrastructure, including depots, as possible infrastructure for the Moon or a cislunar project.  Not only is this a possibility, we learned that something like the orbits that would be involved in doing this were used for the recent NASA GRAIL Mission.  During our discussion throughout the program, we talked about the two Mars missions now en route to Mars, Maven and the Indian mission Mangalyaan.  Note what was said about Mangalyaan and how it is making use of the type of information we discussed in this program to do a lower energy mission to Mars.  In fact, one of the hot topics of our discussion was the comparison between long-way trajectories and short-way trajectories to Mars, what each means for arrival at Mars, capture by Mars, and the return to Earth and capture by Earth.  The reentry speed coming back to Earth is crucial as these speeds can be extremely fast with lots of heat to dissipate.  Keeping speeds below 12k/s for a human Mars mission is vital.

Please post your comments/questions on our blogs and we will do our best to respond to you.  If you want to reach any of our guests, do so through me using drspace@thespaceshow.com.

Dan’s charts and graphs are here:  MultipleMarsDeparturesR1

To best follow tonight’s discussion, refer to;  ReuseForMars

Dr. James (Jim) Benford, Friday, 9-27-13 September 28, 2013

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Dr. James (Jim) Benford, Friday, 9-27-13

http://archived.thespaceshow.com/shows/2094-BWB-2013-09-27.mp3

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Guest:  Dr. James (Jim) Benford.  Topics:  Sailships, “Starship Century,” interstellar travel, Fermi Paradox & 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. In addition, please remember that your Amazon purchases can help support The Space Show/OGLF. See www.onegiantleapfoundation.org/amazon.htm.

We welcomed Dr. James (Jim) Benford to the program to discuss his book (he was the co-editor) “Starship Century,” and his chapter, Sailships, plus his editing of the book.  During our first segment of this 1 hour 26 minute discussion, Dr. Benford introduced us to Microwave Power Beaming, sailships, solar sails, terrestrial beamed power, in-space beamed power and more.  We talked about microwave beaming as a possible space weapon, the storage of beamed energy, and the use of the millimeter band width for beamed power.  Also in our first segment, we talked about possible time lines for development for interstellar travel.  In this discussion, our guest used Alpha Centauri B as a reference point.  Propulsion in general was discussed with a thumbs down for chemical rockets for doing anything like what we were talking about in this segment.  Listeners asked questions as to why interstellar travel was important at this time given it is so far into the future.

In our second segment, we talked about his goals in editing the book and the fact that if it is bought through the book’s website, www.starshipcentury.com, the proceeds are donated to legitimate interstellar organizations and research.   Jim listed several of the organizations being considered for receiving such proceeds and interestingly, most if not all have been guests on The Space Show over the years.  Dr. Benford mentioned conferences and the Arthur C. Clarke Center at UCSD.  We then talked about the Fermi Paradox and factor L as to the probabilities of finding intelligent life someplace other than Earth.  Faster Than Light Travel was a discussion topic, Jim was asked what his non-space friends thought of his microwave beam power work and interstellar travel.  A listener asked about students in these subject, particularly in the UK and the US.

If you have comments or questions, post them on The Space Show blog.  You can reach Dr. Benford through his website, www.jamesbenford.com.

Dr. Dennis Bushnell, Tuesday, 7-23-13 July 24, 2013

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Dr. Dennis Bushnell, Tuesday, 7-23-13

http://archived.thespaceshow.com/shows/2055-BWB-2013-07-23.mp3

 

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Guest:  Dr. Dennis Bushnell.   Topics:  We discussed Dr. Bushnell’s paper, TRL for space development & how best to move forward with civil space.  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. In addition, please remember that your Amazon purchases can help support The Space Show/OGLF. See www.onegiantleapfoundation.org/amazon.htm.

We welcomed back to the program Dr. Dennis Bushnell, the NASA Langley Research Center Chief Scientist.  Dr. Bushnell discussed his paper, “Advanced-to-Revolutionary Space Technology Options-The Responsibly Imaginable.” which can be downloaded at http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20130011698_2013011376.pdf.  In the first segment of our 1 hour 26 minute show, Dr. Bushnell summarized the findings in his paper and talked about how we are still building on technologies from the 50′s and 60′s that were based on “living better with chemistry” and ICBMs.  We began talking about advanced propulsion including nuclear, but our guest made it clear throughout our discussion that what was needed was a reduction in the cost of space access by a magnitude of 10, not by two which is what is happening with new commercial rockets coming on line.  In fact, later in the show when discussing commercial space, Dr. Bushnell was clear that to close a commercial space business plan the reduction in launch costs by a factor of ten was absolutely essential!  I asked our guest to tell us where the bottlenecks were and he said it was in the culture & big cultural changes were required to move forward.  He also talked about the need to experiment and try lots of options and ideas, to triage them, down select, fly them, and choose the best based on the engineering process he described.  We talked about the low technology readiness level (TRL) of many of today’s space ideas and technologies, that we have become focused on instant or near instant gratification but that the process he was talking about would extend over a 25 year period.  Given this, his paper is a frank and factual discussion of many of our space industry segments, a no nonsense, no Kool Aid TRL analysis of much of what we talk about and say we can now do in space or will be doing in the near term.  Safety was discussed, including microgravity, radiation, plus a mention of unknowns regarding what we already know about gut bacteria exposed to radiation given our limited amount of research on this topic to date. A listener asked him about physics as a main reason for space exploration and contrasted that to settlement as the main reason for HSF. Another listener asked him about his mentioning USAF comments that indicated space was a mature and declining industry.  We began talking about commercial space, but we talked about it through the second segment as well.  In this segment, Dennis talked about how we have created economic growth in the past but now we have not only the challenge of economic growth but sustainable jobs and sustaining our standard of living.  Terraforming Mars was discussed as part of our discussion about Inspiration Mars and Mars One HSF missions to Mars.  As this segment ended, a listener asked him about suborbital space and citizen science projects.

In the second segment, John Hunt called in to talk about the high cost of many advanced space technologies, plus he wanted updates on LENR (this used to be called cold fusion).  Dr. Bushnell had much to say about LENR and it potential, we talked about Rossi, and the NASA work being done to better understand LENR effects. With an understanding of it, funding would not be as big a problem as it is today.  He also said LENR had the potential to be transmutational.  Our guest suggested that for more information, we visit the Larsen LENR slideshow:  www.slideshare.net/lewisglarsen/slideshows.  Again, he pointed to cultural issues as major stumbling blocks to this research.  In returning to the focus of his paper, he said there was no shortage of ideas but the culture was preventing them from being tried, tested, and exploited.  Rocket reusability was brought up, our guest mentioned the SpaceX Grasshopper work, and he was asked about SLS and fuel depots.  I asked about BLEO issues and radiation.  In response to another question, he said that were he the space guru, he would focus on “energy” and structural materials. You will want to hear this discussion. Later, Tim called from Huntsville about radiation and HSF to Mars, as well as the economics of the Big Dumb Booster.  I asked Dennis about the target audience for his paper and he said it was meant for NASA and the world since space fairing is a world endeavor. He again talked about potential revolutionary technologies which are needed and which would benefit all of us.  He repeated that we must do the difficult and take the risk and invest.  We also need to look forward with multiyear planning.  Near the end of the program, Dennis was asked about space elevators which he was not enthusiastic about.  Again, he repeated that we needed to make investments to raise our TRL levels.  At the end, I asked why space does not rise to importance in presidential campaigns & elections.  He said space was very good as an Earth utility but beyond that, there was no clear basis for most of it and that was the problem. Don’t miss his comments on this topic.  Our final topic was his assessment of commercial space given his years spent working on it with NASA including budgets into the hundreds of millions to find a way to close a commercial space business case for commercializing the ISS and other things.  This is a very important short discussion, don’t miss it.

Please post your comments/questions on The Space Show blog.  You can email Dr. Bushnell through me or you can find his address using the NASA email locator.

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

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Dave Ketchledge, Sunday, 7-13-13

http://archived.thespaceshow.com/shows/2043-BWB-2013-07-07.mp3

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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, 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. 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.

Hu Davis and William (Bill) Ketchum, Sunday, 5-5-13 May 5, 2013

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Hu Davis and William (Bill) Ketchum, Sunday, 5-5-13

http://archived.thespaceshow.com/shows/2002-BWB-2013-05-05.mp3

Guests:  Hu Davis & William (Bill) Ketchum.  Topics:  Space infrastructure, SSP, SLS, Falcon Heavy, reusability, space policy and U.S. space leadership.  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 Hu Davis and Bill Ketchum to the program to discuss the need for space infrastructure development, SSP, and a space leadership policy by the United States. In the first segment of our 91 minute program, we talked about the need for space infrastructure development, reusable rockets, and space solar power.  Our guest Hu Davis has a Power Point presentation on SSP that will be uploaded to The Space Show blog summary so don’t forget to check it out on the blog.  I will also upload to the blog Bill Ketchum’s pdf paper,  “What Will America Do In Space Now?”  We discussed the history of various space infrastructure studies and efforts and the same for SSP studies, pointing out how new technologies, engineering methodologies, and sophisticated manufacturing have made many projects cost effective today when that was not the case years ago.  Our guests fielded several questions from listeners about the SSP business case, reusability and the SLS compared to the Falcon Heavy.  Doug asked about the use of in space resources & our guests suggested that for SSP for example, using in space resources could account for 90% SSP components.  Questions were asked about the land cost and the use of rectennas.

In our second segment, we talked about nuclear propulsion and tax/economic subsidies to our current terrestrial energy industry which make it harder to develop SSP.   We talked about the problem and the lack of viability for SLS.  Questions came in regarding on orbit propellant transfer and cryogenic transfer development.  As our program was ending, our guests talked about space education outreach, persuading congressional leaders and the public to support space infrastructure development, SSP , and more.

Please post your comments/questions for our guests on The Space Show blog and I will make sure they know about them.  You can email either of our guests through me at Drspace@thespaceshow.com.

what will america do in space now

2013 Solar High Master Draft for SWRI-1

Robert Sackheim, Monday, 4-1-13 April 2, 2013

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Robert Sackheim, Monday, 4-1-13

http://archived.thespaceshow.com/shows/1986-BWB-2013-04-01.mp3

Guest:  Robert (Bob) Sackheim.  Topics:  Commercial space, propulsion, U.S. space policy & 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 Robert Sackheim to the program to discuss NASA, commercial space, the current state of rocket propulsion and advancements in the field.  During our first segment of this 1 hour 47 minute discussion, Mr. Sackheim talked about his background and experience at TRW, NASA MSFC, and his current consulting.  I asked him several questions about the current state of rocket propulsion. Bob had much to say about this, focusing on chemical rocket propulsion, satellite propulsion, electric propulsion, and the need for nuclear propulsion.  He talked about booster rockets, various rocket stages and their propulsion, rocket engines, and even SRBs.  Several questions came in asking him if we had the current technology for HSF to Mars or even the Inspiration Mars flyby mission talked about so much in the recent press.  Listeners wanted to know if our current levels of propulsion were up to the task.  After a rather thorough propulsion discussions, Bob turned to commercial space, lowering total space mission costs, regulatory policy, and commercial spaceports.  He also talked about budget issues and raised the question a few times as to why ten NASA centers were needed given their often overlapping, competitive, and duplicate work.

In our second segment, commercial space took the lead with a discussion on public/private partnerships & the belief that Americans can do anything if we set our mind to it, including space travel.  Of course here the problem as we know lies in leadership and today it appears that leadership in space & other areas is sparse at best.   Bob then focused on geo satellites and the increasing development and capabilities applicable to cubesats.  HSF came up for discussion as did the robotic missions. You might be surprised by what our guest had to say about HSF.  Other issues in this segment included the lunar space elevator, the congressional and NASA track record in canceling ongoing projects & taking lessons from history, SSP, & ways to reform & move NASA forward.  Bob spoke about evolving toward the old NACA model.  I asked about the impact of space advocacy from his perspective given his leadership experience and past positions in leading organizations and projects.  We also asked him about space tourism and hybrid rocket engines. He had much to say about hybrids, don’t miss the discussion.  Bob talked about the Falcon rockets, testing including static fire tests, and SRBs as related to the Constellation project and safety.  Toward the end, our guest was asked about NewSpace, fuel depots, & cryo transfer.  For closing comments, he talked about commercial space being the way to go & the path to our space future.

Please post your comments/questions on The Space Show blog. You can reach Mr. Sackheim through me at drspace@thespaceshow.com.

Dr. William Bainbridge, Friday, 2-8-13 February 6, 2013

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Dr. William Bainbridge, Friday, 2-8-13

http://archived.thespaceshow.com/shows/1946-BWB-2013-02-08.mp3

Guest:  Dr. William Bainbridge.  Topics:  The Space Futures Space Questionnaire about space exploration and the next fifty years.  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. William Bainbridge to the program to discuss the Space Futures project which is to help define the future of space our space program for the next fifty years.  Perceptions of informed, interested, and space conscious individuals are sought for the Space Futures space questionnaire.  The questionnaire is based on years of prior research conducted by Dr. Bainbridge as well as other more recent surveys.  You can read about the Space Future Questionnaires (different platforms are available for it) at http://convergentsystems.pbworks.com/w/page/16444389/FrontPage.  If you use the Droid platform, click on the links that allow you download a free Droid APP which enables you to instantly transmit your survey responses to the survey data base. For everyone else, you can download the survey as a Word document which you can complete online and email to Dr. Bainbridge. The Word document questionnaire with 300 questions is at http://convergentsystems.pbworks.com/w/file/62227159/Space%20email%20survey.doc.  Make sure you click on the DOWNLOAD tab in the upper left corner.  There is a shorter 200 question Word document questionnaire on The Space Show blog.  During our discussion, Dr. Bainbridge provided us with the history of this project, how the information has been and is now collected, processed, and used.  We also talked about the importance of space aware people taking the time to complete the questionnaire.  Lots of listeners asked Dr. Bainbridge questions about who should participate from Middle School students to those in the general population to people outside the U.S.  All groups are welcome but as you will hear, it is very important to get the perceptions and opinions of those that have knowledge and expertise about space exploration and development.  We talked about question groupings such as around topics including the Moon or Mars.  We discussed changing trends overtime and current influences on our opinions such as today’s economic problems.  I brought up the decades old Syncon Process and how some attitudes and perceptions are even stronger today than they were decades ago with Syncon.  For example, attitudes including space benefitting all of humanity and more.  This topic took us toward the virtual world, gaming to help increase space awareness and expertise.  I mentioned the recent discussion re the lunar space elevator program this past Monday regarding CCI Games in Iceland. This was our cliff hanger as we went to our break waiting for Dr. Bainbridge’s comments about his being involved with CCI Games.

In our second segment of this 1 hr. 45 minute program, Dr. Bainbridge talked about his research with the CCI gaming product, EVE Online as he plays the game.  He had much to say about the space awareness of this game and the team in Iceland that created it.  He also said that Sean Smith, one of those slain in the terrorist attack in Benghazi, Libya was a player of EVE Online.  His game name was “Vile Rat” and there is a huge outpouring of support and comments about him on the internet. Google Vile Rat to see these comments & news stories.  We talked about other scientific games and new technologies for developing a space consciousness and expertise about space exploration.  We talked about space and innovation along with frontier development, pioneering & what it means to both continue it or stop it for the future of a nation.  John called to talk with Dr. Bainbridge about his surprise in taking the survey in finding out he was potentially more pessimistic about the future than he had thought he was because like so many others, he had expectations for more advancement in space exploration, development, even settlement than what exists with our present day reality.  Dr. Bainbridge helped put these thoughts and realizations into context with our actual space exploration and development over the past decades.  It’s a fascinating discussion and analysis, don’t miss it.  Near the end of the program, a listener asked how to realize space as an investment rather than just another government expense item.  We talked about better story telling by everyone concerned. Dr. Bainbridge also linked the survey questionnaires to this question because the results will help pinpoint our space insights along with the value stream.  While there is a March 1 questionnaire due date, this is not a hard date and Dr. Bainbridge encouraged people to participate, even if later than March 1.  Also, if someone wants hard copies of the questionnaire to distribute at a space conference or other event, perhaps even a Meetup, you can contact him for copies or you can download the questionnaire from the links provided above.  Another idea is to make a simple flyer with the basic information and the URLs for space or related event distribution.  I did the 300 questionnaire Word document and can’t wait to see the analysis. I certainly plan on bringing Dr. Bainbridge back to the program to discuss the project findings.

Please post your comments/questions on the blog.  If you do the questionnaire, share your thoughts with us on the blog.  If you want to contact Dr. Bainbridge, you can do so through me at drspace@thespaceshow.com.

  The shorter 200 question survey is available for download here:

Space Futures questionnaire

 

Keith Henson, Sunday, 12-2-12 December 3, 2012

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Keith Henson, Sunday, 12-2-12

http://archived.thespaceshow.com/shows/1905-BWB-2012-12-02.mp3

Guest:  Keith Henson.   Topics SSP using laser rockets to lower the cost of space access.  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 Keith Henson to the program to discuss the use of laser powered rockets for launching space powered satellites to help eliminate the use of fossil fuels as well as lower the cost of space access.  To assist in your following our discussion, check out this laser rocket graphic at http://bit.ly/Uj9Vw9.  Also, Keith has several related published articles on the OilDrum blog.  You can download and read his articles at www.theoildrum.com/search/apachesolr_search/keith%20henson. Finally, our guest has permitted me to upload his recent PPT conference presentation to The Space Show blog, “Laser Propulsion and Space Based Solar Power.”  Please be sure to check out this presentation by visiting our blog, http://thespaceshow.wordpress.com. During our first segment, Mr. Henson talked about the need for low cost energy and said that by using laser rockets and his SSP ideas, the cost for electrical power generation could be as low as 2 cents/Kwh to GEO.  We spent a good portion of our discussion debating Keith’s assumptions behind the 2 cents/Kwh.  I referenced my costs per my PG&E invoice and other listeners emailed and called in regarding their electrical costs per their utility bills.  Keith has asked for people disagreeing to let him know where he may be going wrong so please post your comments on our blog and Keith will respond. He said several times that he wanted your critique and comments.  Many listeners as well as myself pushed him on his assumptions, wanting more factual information on how arrived at his conclusions.  He has this information pending publication with the British Interplanetary Society so for the moment, its under pre-publication boycott but as soon as Keith clears it, I will post his material on the blog and announce it on air. Later in our initial segment, we talked about the laser rocket being a weapon. This discussion sparked lots of listener participation. We also talked about SSP for insitu use rather than power beaming back to Earth.  Keith brought up the new developments with Reaction Engines out of the UK. Here is there recent press release in case you missed it: www.reactionengines.co.uk/news_updates.html. Listeners did call in to tell Keith that SSP did not make sense for a variety of reasons, including not closing a business case, with or without laser rockets.  Jerry offered such comments as did Charles. Also, without consent, AT&T installed call waiting on the toll free line. I finally figured this out & edited out several of the comments & my complaint.  The matter should be resolved for all toll free calls moving forward but about 1hr 30 minutes into the program, you will hear a rough edit where I removed the call waiting rants.
     In the second segment, we continued debating Keith’s costs plus his ROI assumptions. Fusion came up for discussion as well as already existent successful powered sat beamed energy back to Earth.  Toward the end of our program, Keith talked about his target of reducing dollars per gasoline by using laser rockets and SSP.
      Please post your comments/questions on The Space Show blog above. Keith can be emailed at hkeithhensonATgmailDOTcom.
Laser Rockets & SSP

Dr. Jason Cassibry, Tuesday, 10-9-12 October 10, 2012

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Dr. Jason Cassibry, Tuesday, 10-9-12

http://archived.thespaceshow.com/shows/1869-BWB-2012-10-09.mp3

Guest:  Dr. Jason Cassibry.  Topics:  A technical description and the potential of fusion propulsion.  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. 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 Dr. Jason Cassibry to the program to guide us in our discussion of the potential for fusion propulsion.  At times, this was a very technical discussion.  To assist in following it, I have uploaded to the blog his published paper delivered at the AIAA Joint Propulsion Conference, “The Case and Development Path for Fusion Propulsion.”  In addition, below are the URLs for several articles on fusion propulsion that Dr. Cassibry shared with us: www.uah.edu/news/items/10-research/2501-slapshot-to-deep-space#.UDrKn-iPVuY;
www.popularmechanics.com/science/space/rockets/the-big-machine-that-could-lead-to-fusion-powered-spaceships-9450996; http://io9.com/5921673/nuclear-slapshots-could-propel-a-spacecraft-to-mars-in-just-weeks; www.centauri-dreams.org/?p=23442
and http://nextbigfuture.com/2012/10/zpinch-nuclear-fusion-pulse-space.html.   Dr. Cassibry started out by providing us with a working definition of fusion propulsion.  We talked about nuclear propulsion as well and the overall state of development for fusion energy.  I asked Dr. Cassibry if in their economic projections for fusion propulsion, they considered the political and policy impact on fossil fuel pricing and supply availability.  As you will hear, generally such factors are not included in their studies though he concurred with me that such policies can strongly skew the economics one way or the other.  Several calls came in on a wide ranging group of associated topics.  We talked about the main fusion fuel, lithium deuteride, magnetic nozzles, and the use of a nuclear fission reactor to start the fusion propulsion unit.  Z-Pinch technologies were defined and discussed.  As the segment drew to a close, I asked about funding sources for this research and we learned that most all of the funding is from public sources.

In our second segment, more listeners called in regarding insitu resource usage, nuclear propulsion to start the fusion unit, and the power consumed for all of this.  We talked about using fusion propulsion for a Mars mission and what it did for travel times.  Jason also put forth a suggested time line and path to follow to operation in perhaps 25 years, depending on funding.  More calls came in with fuel questions, vibration impact, G force acceleration, thrust, and more.  Another topic discussed was fusion propulsion for the launch vehicle.  We then compared some real mission travel times such as Cassini, Voyager, and New Horizons, asking what the transit times would have been like using fusion propulsion.  As we were ending the program, I asked about the students entering aerospace engineering at UAH, both the undergrad and graduate level, plus the gender mix of the students.  There appears to be strong demand by the students to study these fields at all levels.  In conclusion, Jason suggested that we could look for breakeven with fusion in about ten years, maybe less.

If you have comments/questions, please post them on The Space Show blog.  Dr. Cassibry’s faculty page at UAH is www.mae.uah.edu/faculty/cassibry.shtml.

 

Cassibry et al case for fusion 072812

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