jump to navigation

Dr. Mike Griffin, Tuesday, 9-16-14 September 17, 2014

Posted by The Space Show in Uncategorized.
Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,
3 comments

Dr. Mike Griffin, Tuesday, 9-16-14

http://archived.thespaceshow.com/shows/2317-BWB-2014-09-16.mp3

Your Amazon Purchases Helps Support TSS/OGLF (see www.onegiantleapfoundation.org/amazon.htm)

If you rate shows on live365.com, email me your rating reasons to help improve the show

Guest:  Dr. Mike Griffin.  Topics: Human spaceflight policy, political choices, space technology, Mars, Moon, Asteroids 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. In addition, please remember that your Amazon purchases can help support The Space Show/OGLF. See http://www.onegiantleapfoundation.org/amazon.htm.  For those listening to archives using live365.com and rating the programs, please email me as to why you assign a specific rating to the show. This will help me bring better programming to the audience.

We welcomed back to the program Dr. Mike Griffin.  During the first segment of our 90 minute discussion, Mike talked about human spaceflight (HSF) and the commercial space market.  He said exploration would be a government project or at least with government in the lead, especially if the commercial market was not there.  He threw water on the argument that our space policy was budget driven.  Instead, he talked about it being based on choices we make. It was not and is not about the money.  His comments throughout or discussion on this topic supported his argument.  He even said the cost of space for the U.S. taxpayer was around 15 cents/day.  This discussion evolved to one on the importance of leadership which we agreed was in short supply today.  Included in this discussion was Mike’s vision for our space policy & program, plus he explained its importance and value to our nation both today and for the future.  He spoke to the issue of what society wants and the choices it makes that shape our future.  Space should be part of our national policy debate and hopefully such a debate would enable quality choices to be made that keep us on the leadership edge with all nations.   Mike was asked who he thought would be next on the Moon and he said China.  We also talked about the private sector taking us back to the Moon with HSF.  He said that the private sector could do this, capital was not an issue, but for the private sector to do it there needs to be a closing of the business case which he did not see at this time.  SLS John called in & asked about space advocacy diversity which he said seemed to be at war with NASA & whatever the program of record might be.  Mike had much to say about this, especially about inefficiencies in government organizations and projects.  He also said if the private venture or industry cannot make money, then it should be a federal project. Many times during our discussion he said that there are things that a society should do just because they are hard & they don’t have to look good on the balance sheet.  John also asked about the RD-180 engine, Mike offered us his conclusion as to why we should be a new version of the RD-180 so that we do not continue being dependent on Russia for space related hardware, etc.  Later, he was asked about cislunar space development which he said should be a public enterprise.  He cited many examples and models supporting the public development of this important space infrastructure.  SLS was discussed.  Mike very clearly articulated the case for SLS today and again repeated that SLS future missions are about choices, not the budget.  Don’t miss his comments.  As the segment ended, Randy emailed a question asking for the rational & silver bullet for HSF.  In my opinion, Mike gave an excellent response to this question so don’t miss it.

In the second segment, Mike got some questions about NASA doing more R&D and even forming a NACA-like division or program.  We talked about NASA R&D, the need for a NACA-like program and more.  Dave, our caller, commented on leadership, then Bill in Denver emailed in a question about using fuel depots and smaller launch vehicles rather than heavy lift vehicles like SLS.  Again, Mike had much to say about heavy lift, including that while possible to do smaller vehicle launches., the numbers don’t pan out for efficiency.  You need to listen to this full discussion which also addressed some bogus assumptions regarding inefficient heavy lift decision making.  Nuclear propulsion and Vasimr came up, , then we again focused on vision that takes on big challenges because we can!  More was said on lunar colonies evolving to longer BLEO missions plus cislunar commerce, especially cislunar cargo missions.  Another listener asked about being dependent on the Russians for HSF to the ISS and if shuttle was retired too early.  Mike talked about having wanted to fly shuttle at a minimum rate annually until a new vehicle was operational.  We talked about the role of the congress and White House as compared to the role of the NASA Administrator.  Later, we talked about the role of public support and individuals petitioning congress on space policy.  Listen to his story about the Hubble repair mission.  I even asked if poorly written and fantasy driven letters to informed staffers helped or hurt the cause.  Listen for Mike’s response. In summary, Mike said his wish was that people would share is view that there are important things for society to do but that don’t look good on a balance sheet.  In the end, he said he was optimistic that his positive views on space would prevail and that when policy makers realized that China was going to put people on the Moon and what that would mean for the US, it would not be allowed to happen.

Please post your comments/questions on TSS blog above.

Erik Seedhouse, Monday, 9-15-14 September 16, 2014

Posted by The Space Show in Uncategorized.
Tags: , , , , , , , , , , , , , , , , , , , , , , , , , ,
add a comment

Erik Seedhouse, Monday, 9-15-14

http://archived.thespaceshow.com/shows/2316-BWB-2014-09-15.mp3

Your Amazon Purchases Helps Support TSS/OGLF (see www.onegiantleapfoundation.org/amazon.htm)

If you rate shows on live365.com, email me your rating reasons to help improve the show

Guest:  Erik Seedhouse.  Topics:  Erik’s latest book, “Beyond Human: Engineering Our Future Evolution,” & human modification for long duration spaceflight.  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 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 Erik Seedhouse back to the program to discuss his latest book “Beyond Human: Engineering Our Future Evolution.”  During the first segment of our 90 minute program, Erik talked about long duration spaceflight and critical issues in radiation and microgravity that he believes may force changes or modifications in humans in order to survive the trips and live on Mars or another celestial location.  He also talked about changes here on Earth such as advances in bioprinting, especially for organs.  Our guest spent lots of time on the radiation challenges, shielding, and the need for possible genetic modification.  Another point he made was for nuclear propulsion to cut the travel time to Mars and other locals down and make the voyage safer.  His favorite advanced propulsion system was Vasimr.  Dr. Rowe called in and brought up his concerns with the cardiovascular  (CV) system in space, a subject Bill has talked about on many Space Show programs.  Erik’s research did not focus on the CV system so he was unable to comment on what Dr. Rowe was discussing.  Next, Erik spoke about muscle atrophy and other microgravity challenges and suggested human modification would address those areas as well.  He also talked about animal and human cloning, then a listener brought up a subject from our recent open lines program re pregnancy, childbirth, and kids in space.  Erik suggested there might be sterilization as a requirement or abortive medication on board.  I commented that this would cause a firestorm with the public, especially on publicly financed missions.

In our second segment, our lead off topic was a Posthuman/Transhuman future.  Erik cited examples and also used the classic movie Gattaca as an example.  Listener Paul sent in an email about the ethics behind what Erik was talking about.  Erik was asked about the lifespan of humans that might live on Mars or the Moon, then Ben asked if long duration spaceflight and humans in space were an economic driver for human genetic engineering.  Erik said no, that it was a very small part of the industry with organ printing as one of the major drivers.  Todd inquired about exercise and this led Erik to talk about genetic screening to select the most qualified people for the spaceflight missions.  As we neared the end of the show, Erik told us about his next book about expeditions, then he talked about Virgin Galactic and XCOR.

Please post your comments/questions on TSS blog.  You can reach Erik through me. Also, when buying the book, use the Amazon OGLF portal so Amazon will contribute to The Space Show.

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

Posted by The Space Show in Uncategorized.
Tags: , , , , , , , , , , , , , , , , , , , , , ,
3 comments

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

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

Your Amazon Purchases Helps Support TSS/OGLF (see www.onegiantleapfoundation.org/amazon.htm)

 

If you rate shows on live365.com, email me your rating reasons to help improve the show

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

Posted by The Space Show in Uncategorized.
Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,
6 comments

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

Your Amazon Purchases Can Help Support The Space Show/OGLF (www.onegiantleapfoundation.org/amazon.htm)

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

Posted by The Space Show in Uncategorized.
Tags: , , , , , , , , , , , , , , , , , , , , , ,
add a comment

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

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

 Your Amazon Purchases Can Help Support The Space Show/OGLF (www.onegiantleapfoundation.org/amazon.htm)

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

Posted by The Space Show in Uncategorized.
Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,
1 comment so far

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

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

 

Your Amazon Purchases Can Help Support The Space Show/OGLF (www.onegiantleapfoundation.org/amazon.htm)

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

Posted by The Space Show in Uncategorized.
Tags: , , , , , , , , , , , , , , , , , , , , , , , , ,
1 comment so far

Dave Ketchledge, Sunday, 7-13-13

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

Your Amazon Purchases
Can Help Support The Space Show/OGLF (www.onegiantleapfoundation.org/amazon.htm)

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

Posted by The Space Show in Uncategorized.
Tags: , , , , , , , , , , , , , , , , , , , , , , , , ,
1 comment so far

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

Posted by The Space Show in Uncategorized.
Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,
2 comments

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

Posted by The Space Show in Uncategorized.
Tags: , , , , , , , , , , , , , , , , , , , , , , ,
1 comment so far

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

 

Follow

Get every new post delivered to your Inbox.

Join 69 other followers