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Dr. Madhu Thangavelu, Friday, 6-7-13 June 8, 2013

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Dr. Madhu Thangavelu, Friday, 6-7-13

http://archived.thespaceshow.com/shows/2024-BWB-2013-06-07.mp3

Guest:  Dr. Madhu Thangavelu.  Topics:  space architecture visionary design, Human Spaceflight (HSF) to Mars, radiation, much 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.

We welcomed back Dr. Madhu Thangavelu for a 1 hour 45 minute discussion on a wide ranging set of topics from space visionary concepts to HSF to Mars, radiation and other issues, fantasy vs. reality thinking, and the synthetic mind. Madhu provided us with these links relevant to our discussion:  1. AIAA talk slides:
https://info.aiaa.org/Regions/Western/LA/Lists/Presentations/DispForm.aspx?ID=6 ; 2. AIAA Space Architecture panel video on YouTube : www.youtube.com/watch?v=ig3FzB0bQnA, 3. USC Space Concepts Studio website : http://denecs.usc.edu/hosted/ASTE/527_20111, 4. latest USC Eng. magazine carries an article, p16-17: http://viterbistorage.usc.edu/Public/USCVITERBIMAG.pdf.  In our first segment, Madhu opened up by talking about students and space inspiration.  Based on his own USC teaching experience, he said students were fired up.  Our guest was asked to compare robotic missions to HSF missions and Madhu spent some time on this discussion.  He also talked about the NASA plan to capture an asteroid, referring to this as a possible wild goose chase.  He talked about the ISS and using it more and more to accomplish important space goal.  Madhu received several questions about Tito’s Inspiration Mars flyby mission.  Here, he had much to say, especially about radiation, deep space communications, food & nutrition, and even physiology degradation.  We talked about using nuclear propulsion for such a mission & he suggested a better mission profile using two Falcon rockets.

In the second segment, Paul asked about using nuclear electric propulsion as compared to the two Falcon rocket idea. Madhu talked about the nuclear propulsion history with NERVA & the use of nuclear fuel on many of our robotic missions. Michael called in and said there was no real political will for nuclear so it probably would not happen anytime soon.  Later, Madhu was asked many specific radiation questions regarding the Mars flight.  Madhu suggested possible mitigation strategies, including his favorite, self cellular repair.  Allison emailed in to inquire about his Studio students and how he holds the line from reality thinking as compared to Kool Aid thinking.  Madhu talked extensively about this issue, discussed the philosophy of idea generation, visionary thinking with some fantasy while at the same time being grounded in engineering, physics, financial and other subcomponents of the concept. Don’t miss this important discussion.  We also talked about disruptive technologies.  At the end, we talked about the synthetic mind.

Please post your comments/questions on The Space Show blog above.  You can contact Madhu through me.

Dr. Bruce Cordell, Friday, 3-29-13 March 29, 2013

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Dr. Bruce Cordell, Friday, 3-29-13

http://archived.thespaceshow.com/shows/1983-BWB-2013-03-29.mp3

Guest:  Dr. Bruce Cordell. Topics:  Space Trends for 2013 & the coming period of Ebullience for grand space projects.  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. Bruce Cordell to discuss the ten major space trends for 2013 and the Maslow Window forecast for a coming period of ebullience, economic boom, and large space projects.  For more information, visit his website, www.21stcenturywaves.com.  His article titled “10 Space Trends for 2013 – Featuring the Approach of the New International Space Age can be found at http://21stcenturywaves.com/2013/02/13/state-of-the-wave-10-space-trends-for-2013-featuring-the-approach-of-the-new-international-space-age.  During the first half of our two hour discussion, Dr. Cordell took us through the history of his development of fractal Maslow Window forecasts, plus the historical data used to predict a Maslow Window.  After his introduction, we then talked about Mars and the excitement surrounding Mars with the Curiosity rover and the newly announced Inspiration Mars HSF mission Mars flyby per Dennis Tito.  Dr. Cordell spent considerable time connecting the dots for us to the importance of the Inspiration Mars mission & the coming predicted boom and period of ebullience.  Michael Listener called in to suggest the possibility of the government not providing a launch license for the Inspiration Mars launch.  This sparked an intense discussion regarding the likelihood of the government blocking such a mission.

In our second segment, Dr. Cordell talked about the space relationship to the war threats made North Korea and Iran.  Here, he connected the dots to the U.S. B2 Korean flyover and the Iranian and N. Korea threats to precursors that show up before the boom and period of ebullience.  He cited the Cuban Missile Crisis as an example prior to Apollo.  Again citing the precursors, he suggested that the “bumpy road” most always led to the boom period.  Several email listener questions came in regarding the U.S. & global economic condition & how it impacted his forecast.  Here, he referenced panics before each boom.  Bruce suggested we would be entering the period of ebullience around 2014 or 2015 but he also cited some reasons why the period could possibly be delayed, thus appearing much later.  But he definitely cited periods of financial panic as precursors to the boom periods.  He also talked about geopolitical events & their influence, including the role of conflicts.  Near the end of our program, he talked about the importance of the 2014 elections & our then had more to say about the Tito Mars flyby mission.

Please post your comments/questions on The Space Show blog.  You can email Dr. Cordell through his website or drspace@thespacesow.com.

Dr. Anita Sengupta, Tuesday, 8-28-12 August 29, 2012

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Dr. Anita Sengupta, Tuesday, 8-28-12

http://archived.thespaceshow.com/shows/1843-BWB-2012-08-28.mp3

Guest:  Dr. Anita Sengupta.  Topics:  Entry, Descent, & Landing for Mars, Venus, propulsion, parachute issues, & more.  You are invited to comment, ask questions, and discuss the Space Show program/guest(s) on the Space Show blog, https://thespaceshow.wordpress.com. Comments, questions, and any discussion must be relevant and applicable to Space Show programming. Transcripts of Space Show programs are not permitted without prior written consent from The Space Show (even if for personal use) & are a violation of the Space Show copyright.  We welcomed Dr. Anita Sengupta, Senior Systems Engineer at JPL in Entry, Descent & Landing (EDL) Advanced Technologies Group to discuss EDL for Mars, other planets, and much more.  In our first segment, Dr. Sengupta described conditions relevant to Mars and landing an object on the planet. We talked about the Martian atmosphere and what an EDL team needs to consider and design to land any payload on Mars as well as humans. We also learned that EDL for a different size payload would be different than what was used for Curiosity, probably needing new systems.  We talked about supersonic parachutes & parachutes in general, addressing parachute materials, velocity, parachute violent extremes, the speed of sound & much more.  Another topic was testing on Earth to make sure the devices work on Mars.  Dr. Sengupta explained how such testing & Mars simulation is done on Earth.  Other landing techniques such as airbags were mentioned along with retro rockets.  During this discussion, our guest did a great job of explaining the various forces and physics involved in landing & how each of these forces must be dealt with for a successful landing.  We then talked about landing a payload on Venus and just how different Venus is to Mars.  The same for our Moon and the moons of Mars, Phobos & Deimos.  Listeners sent in questions about the rover debris being left on Mars as well as wondering if there were other ways to explore Mars than using rovers.  John called to inquire about first stage reusability & our guest talked about doing the “trades” (running the numbers to see if reusability is economic or not). Doug called to talk about orbital transfer vehicles, aerobraking, and more.  This led us to a discussion about larger launch vehicles, the need to dissipate lots of energy on reentry, and why larger areas with drag are preferable.

In our second segment, I asked about software programs we might use for the basic type of analysis Dr. Sengupta had been discussing. Note her recommendations.  We then talked about plasma propulsion and ion thrusters.  Dr. Sengupta had much to say on this subject including ion thruster fuel, costs, ISP, and again, the importance of doing trade studies for a mission to determine the best methodology/economics for the mission. Our guest also talked about the lower ISP Hall ion thruster which was also lower in cost but with substantially more ISP than a chemical engine.  Also in this segment, we talked about the Dawn mission & Vega, a possible Europa mission & the use of nano satellites for the Europa mission.  Doug called back regarding ion propulsion fuel, xenon, iron, lunar fuel, etc.  As our program was ending, Anita mentioned the Orion parachute system tests she works on & the new Mars mission InSight.  Several times during the program, Dr. Sengupta stressed the need to do the trade studies regarding mission planning to determine the best economics & cost effectiveness for the mission.  Many of you have heard on The Space Show that if one does not “run the numbers,” it is impossible to know if what you want to do is economically & mission productive/viable.  On Oct. 28, Dr. Jurist is doing a special webinar with his interactive Excel spreadsheet on rocket/mission planning.  It is essential to be able to do this in mission planning.  Trusting your beliefs, gut, & preferences are not the way to go so watch this webinar if you can.

Please post questions/comments on our blog.

The John Batchelor Show “Hotel Mars”, Wednesday, 7-18-12 July 19, 2012

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The John Batchelor Show “Hotel Mars”, Wednesday, 7-18-12

http://archived.thespaceshow.com/shows/1817-BWB-2012-07-18.mp3

Guests:  John Batchelor, Irene Klotz, Dr. David Livingston.  Topics:  The upcoming landing for Mars Science Lab’s Curiosity Rover.  You are invited to comment, ask questions, and discuss the Space Show program/guest(s) on the Space Show blog, https://thespaceshow.wordpress.com. Comments, questions, and any discussion must be relevant and applicable to Space Show programming. Written transcripts of Space Show programs are not permitted without prior written consent from The Space Show (even if for personal use) & are a violation of the Space Show copyright. This program is archived on The Space Show website, podcasting, and blog sites with permission from John Batchelor. Please visit the John Batchelor Show website for more information about this fine program, www.johnbatchelorshow.com. Note that do to a phone line glitch, I was unable to participate in most of this program.  During our 11.5 minute discussion, John and Irene talked about the upcoming landing set for 10:30 PM PDT on August 5th of the Mars Science Lab Curiosity Rover.  We talked about the problems with Mars Odyssey which if it can be repositioned with all systems working will provide real time information on the Curiosity landing.  If Odyssey cannot be repositioned for the landing, our information about the landing will be delayed.  Other resources will be able to provide information including the Mars Reconnaissance Orbiter and ESA’s Mars Express but not on a real time basis.  We also talked about the landing process and I urge all of you to see the excellent JPL animation of the complete landing known as “Seven Minutes Of Terror” at www.youtube.com/watch?v=h2I8AoB1xgU.  Also discussed in detail was the Curiosity Sky Crane and the communication time back to Earth which is 14 minutes given the current distance between Earth and Mars.  Please post your comments/question on The Space Show blog.

If you have a question for either John Batchelor or Irene Klotz, send it to me and I will forward it to the person of your choice.