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Greg Meholic, Friday, 6-5-15 June 6, 2015

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Greg Meholic, Friday, 6-5-15

http://archived.thespaceshow.com/shows/2487-BWB-2015-06-05.mp3

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Guest:  Greg Meholic.  Topics:  Advanced propulsion concepts and more.  Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, https://thespaceshow.wordpress.com.  Comments and questions should be relevant to the specific Space Show program. Written Transcripts of Space Show programs are a violation of our copyright and are not permitted without prior written consent, even if for your own use. We do not permit the commercial use of Space Show programs or any part thereof, nor do we permit editing, YouTube clips, or clips placed on other private channels & websites. Space Show programs can be quoted, but the quote must be cited or referenced using the proper citation format. Contact The Space Show for further information. In addition, please remember that your Amazon purchases can help support The Space Show/OGLF. See www.onegiantleapfoundation.org/amazon.htm.  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 show Greg Meholic to speak about advanced propulsion concepts, rocket reusability, and much more.  During the first segment of our 84 minute program, Mr. Meholic first defined what he meant by the term advanced propulsion.  Given this definition, we moved forward to discuss various concepts, propulsion methods, and propulsion research. During this segment, we talked about several propulsion technologies and Greg said thumbs up or thumbs down to their being advanced propulsion.  When it came to nuclear, Greg classified it as an alternative propulsion method, not an advanced propulsion.  Again, don’t miss his definition.  We talked near and intermediate term advanced propulsion concepts though it does not appear anything is really close at hand.  His timeline for a possible advanced propulsion technology was around 20 years.  He said not only do we need to understand the physics much better,  but the propulsion method much compete with current systems and produce benefits including cost benefits.  As far as choke points on advanced propulsion, he said understanding the fundamental physics involved was a big one.  We then talked about funding which is now mostly from companies and other private investor oriented sources.  I asked lots of questions about funding, especially how does one know when the point is reached to either kill the project or keep it going.  Don’t miss what he said about this.  Listeners also asked many questions.  In replying to one listener, he said it would be hard to beat chemical rockets to LEO but the door opens up BLEO though the Moon can be done with chemical rockets.  When asked about the anti-nuke movement and the impact on the nuclear rocket, he had some interesting observations, especially regarding the views of younger people.  When asked for leading advanced propulsion people and concepts, he mentioned former Space Show guest Dr. James Woodward and his work with Mach’s Principle several times during our show.  Greg was also asked about the work of Dr. Sonny White at JSC for warp drive and M drive.  Greg had much to say about his work including Q thruster and M drive.  John from Ft. Worth called in to talk about M Drive & Mach’s Principle along with gravity and magnetic frequencies.

In the second segment, Ashley sent in an email asking about going to the Moon and Mars for settlement and sustainability, wondering if advanced propulsion was needed for either location.  You might be surprised by Greg’s response to this question so listen carefully.  He did say there would be different requirements for the Moon and Mars.  With Mars, he also spoke about radiation and travel times.  Greg then had some things to say about artificial gravity.  One of his comments was that if we understood more of the physics, an eventual advanced propulsion system might enable an artificial gravity system without spinning or the need for tethers.  Brad in Tucson sent in a note asking about reusable first stage rocket launch systems.  Greg was delighted with the question as he works on such systems in his day job and he had much to say and offer about reusable first stage rockets.  He went through a brief summary of some of his work plus those attempting to design such systems including SpaceX.  I asked about a payload penalty with reusability.  Don’t miss his answer.  Our next caller was Marshall and he took us back to the artificial gravity discussion.  Marshal was asking questions about the amount of time spent in 1g as opposed to various fractional gravity loads.  As the program was ending, Greg received the final question which dealt with comparing the quality of government research to private sector research.  He reminded the listener that there very little to no government research funding for advanced propulsion, that it was almost all private sector funding.  He said the private funding was investor based so it comes with a commercial profit focus.

Please post your comments on The Space Show blog above.  Greg Meholic can be reached through me using drspace@thespaceshow.com.

Marc Millis, Sunday, 12-21-14 December 22, 2014

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Marc Millis, Sunday, 12-21-14

http://archived.thespaceshow.com/shows/2379-BWB-2014-12-21.mp3

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Guest:  Marc Millis.  Topics:  Advanced propulsion, interstellar flight & advanced physics leading to interstellar flight.  Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, https://thespaceshow.wordpress.com.  Comments and questions should be relevant to the specific Space Show program. Written Transcripts of Space Show programs are a violation of our copyright and are not permitted without prior written consent, even if for your own use. We do not permit the commercial use of Space Show programs or any part thereof, nor do we permit editing, YouTube clips, or clips placed on other private channels & websites. Space Show programs can be quoted, but the quote must be cited or referenced using the proper citation format. Contact The Space Show for further information. In addition, please remember that your Amazon purchases can help support The Space Show/OGLF. See http://www.onegiantleapfoundation.org/amazon.htm.  For those listening to archives using live365.com and rating the programs, please email me as to why you assign a specific rating to the show. This will help me bring better programming to the audience.

We welcomed back Marc Millis to discuss the needed advanced physics for interstellar spaceflight plus his take on the new hit movie, “Interstellar.”  During our 90 minute program without a break, Marc debriefed us on his take on the science behind and involved with the new movie, “Interstellar.”  He said there were things about the science and the movie that he liked and that they did a good job with and other things that got a less than positive grade.  For example, he said the way the movie depicted the worm hole was nicely done & he explained why.  One area he did not like was the shuttle like craft being blasted to space on a Saturn V like vehicle but then going back and forth to the other planets.  He said this raised serious fuel issues & questions.  He also said the time dilation effects were confusing and inconsistent.  We talked about black holes, then Marc mentioned the Incessant Obsolescence Postulate which suggests that should a probe or occupied spaceship be launched to the stars, eventually a more modern one will pass it in the future enabling it to reach the destination a lot sooner than the initial ship.  Marc returned to discussing worm holes and the negative energy needed for them to be useful tools for interstellar spaceflight.  A listener from Boston asked about nuclear propulsion and if that was the advanced propulsion needed for interstellar flight.  Marc talked about both fission and fusion propulsion & their respective applicability & usefulness for interstellar flight.  SLS John called for an advanced physics discussion which included the inertial frame of reference and gravity discussion, Mach’s principle, the Equivalence principle, the Higgs particle and more.  This is a great discussion, don’t miss it.  Another listener asked Marc what the minimum advanced physics and propulsion would be to get started with an interstellar flight, then evolving to more advanced tools over time.  Marc outlined a plan he talked about earlier for doing small steps at a time as opposed to a giant leap needing far more advanced technology than what is available now or will be in the near future.  Another listener asked a similar question focusing on the minimum amount of knowledge needed to get started with interstellar spaceflight.  Pooley called in to talk about the Equivalence Principle.  Marc talked about the Tau Zero Foundation and its needs, and then Beth asked why we don’t focus on Mars or the clouds on Venus, both of which are more doable than interstellar flight.  Marc said we need to focus on both at the same time so don’t miss his excellent answer.

Please post your comments/questions on The Space Show blog above.  Marc can be reached through me.  To learn more, visit http://www.tauzero.aero.

Dr. John Cramer, Friday, 9-20-13 September 21, 2013

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Dr. John Cramer, Friday, 9-20-13

http://archived.thespaceshow.com/shows/2089-BWB-2013-09-20.mp3

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Guest:  Dr. John Cramer.  Topics:  Dr. Cramer’s chapter in “Starship Century,” interstellar travel, physics.  Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, https://thespaceshow.wordpress.com.  Comments and questions should be relevant to the specific Space Show program. Written Transcripts of Space Show programs are a violation of our copyright and are not permitted without prior written consent, even if for your own use. We do not permit the commercial use of Space Show programs or any part thereof, nor do we permit editing, YouTube clips, or clips placed on other private channels & websites. Space Show programs can be quoted, but the quote must be cited or referenced using the proper citation format. Contact The Space Show for further information. In addition, please remember that your Amazon purchases can help support The Space Show/OGLF. See www.onegiantleapfoundation.org/amazon.htm.

We welcomed Dr. John Cramer to the program to discuss his chapter in the book “Starship Century.”  Dr. Cramer titled his chapter Exotic Technologies for Interstellar Travel.  Remember, if you purchase this book using The Space Show/OGLF Amazon portal, Amazon will contribute to The Space Show.  Instructions for doing this are in all archived program summaries on our website and our blog.  Dr. Cramer’s website is http://faculty.washington.edu/jcramer.  During the first segment of our 90 minute discussion, Dr. Cramer talked about his chapter, interstellar spaceflight, exotic technologies, and the Quantum Grounded Theory.  He mentioned James Woodward and his work with Mach’s Principle.  I also asked him about the level of interest expressed by his students in interstellar travel and we talked about timelines for realizing interstellar travel.  Our guest said we needed breakthroughs and the progress in 100 years would depend on realizing key breakthroughs.  Dr. Cramer suggested that our challenges were still in the fields of theory as we needed much better understandings of lots of things associated with interstellar travel.  The issue of space settlement came up in terms of Mars and deep space.  We also talked about worm holes but we spent more time on that subject in the second segment.  I asked if finding the Higgs-Boson was helpful. Dr. Cramer had much to say on this as well as on the LHC and colliders in general.  Dr. Cramer was asked about his science fiction works and his writing for Analog.  We also talked about the impact of our having cancelled our collider to be built in Texas and the impact of that decision on American science for decades following that political decision.

In the second segment, Dr. Cramer went into more detail about worm holes, including an explanation of the “back reaction” issue.  Later, we talked about timelines, budgets and our political funding process.  Near the end of the program, NASA was discussed as was our reliance on large rockets.  Dr. Cramer said we would need to get away from rockets and propulsion thrust if we were to do anything with interstellar travel or deep space.  At the end, he was asked about ET based on the comments Dr. Davies made on his interview earlier this week.

Please post your comments/questions on The Space Show blog URL above.  You can email Dr. Cramer through his website.

Dr. John Brandenburg, Sunday, 5-19-13 May 20, 2013

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Dr. John Brandenburg, Sunday, 5-19-13

http://archived.thespaceshow.com/shows/2011-BWB-2013-05-19.mp3

Guest:  Dr. John Brandenburg.  Topics:  Physics, cosmology, Unified Field Theory, Higgs-Boson.  Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, https://thespaceshow.wordpress.com.  Comments and questions should be relevant to the specific Space Show program. Written Transcripts of Space Show programs are a violation of our copyright and are not permitted without prior written consent, even if for your own use. We do not permit the commercial use of Space Show programs or any part thereof, nor do we permit editing, YouTube clips, or clips placed on other private channels & websites. Space Show programs can be quoted, but the quote must be cited or referenced using the proper citation format. Contact The Space Show for further information.

We welcomed back Dr. John Brandenburg for an interesting science fiction and physics discussion for 2 hours and 7 minutes.  We started our first segment with Dr. Brandenburg talking about the recent meteor impact on the Moon, parallels with the Shoemaker-Levy comet impact on Jupiter, and even referencing the Clementine Mission.  We then moved into John’s science fiction writing which he usually does under the name of Victor Norgarde.  However, his latest book project, a book that goes into the metaphysical realms and is titled “The Cosmic Jesus,” he uses his real name.  Based on his discussion of the book with us, I hope to feature it with John on future Space Show program.  Dr. Brandenburg then introduced us to the theories of Richard Feynman and John Wheeler and the impact of their work today.

In our second segment, Dr. Brandenburg talked about his GEM Tetra Unification Theory and the Higgs-Boson particle.  In this discussion, our guest did use a moderately heavy physics language citing several theories and the works of others such as Kaluza-Klein theory so stay with us as we talked about hidden dimensions, quantum mechanics, force fields, LENR & cold fusion, Mach’s Principle and much more.  John speculated on the Higgs being able to help us figure out how to reduce the mass of a spaceship so it could accelerate to the speed of light.  As you will hear, our caller John Hunt who is now in Ft. Worth rather than Atlanta talked with our guest about not impacting the inside of the spaceship and the occupants in reducing the mass of the spaceship.  At times, this was a very technical discussion.  Later in the segment, Sandra in Seattle emailed in asking our guest to assign himself to either traditional physics, the frontier of physics, or the lunatic fringe of physics.  This turned into a most interesting discussion about physics and each of the three classifications.  You guess where Dr. Brandenburg placed himself in terms of the three classification descriptors.  For most of the rest of the discussion, Dr. Brandenburg talked about physics, what it takes to get theories and ideas into the academic discussion and at some point accepted or at least seriously considered.  Another listener emailed him for conference suggestions since John said that it was important to go to conferences, publish, present, etc.  In Dr. Brandenburg’s closing remarks, he left us with a challenging question to consider!

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