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Dr. Anita Sengupta, Friday, 11-1-13 November 2, 2013

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Dr. Anita Sengupta, Friday, 11-1-13

http://archived.thespaceshow.com/shows/2113-BWB-2013-11-01.mp3

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Guest:  Dr. Anita Sengupta.  Topics:  Cold Atom Lab (CAL) project, human spaceflight EDL & 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 back Dr. Anita Sengupta to discuss the Cold Atom Lab (CAL) project for which Dr. Sengupta is the project manager.  CAL is to launch to the ISS in early 2016, probably aboard the SpaceX Dragon though that has yet to be confirmed but the project needs a ride on a pressurized spacecraft.  For more information on the CAL project and mission, check out these websites: http://coldatomlab.jpl.nasa.gov; http://coldatomlab.jpl.nasa.gov/news/FunPhysicsResearch. During this 64 minute discussion, Dr. Sengupta explained the CAL project to us, ultra cool quantum gasses in absolute zero and in zero gravity to establish a Force Free Environment which means no gravity pull.  We talked about laser cooling and the series of experiments likely to be done on the ISS with CAL based on the NASA Research Announcement which has a submittal date of Nov. 5, 2013.  We talked about atomic physics and many related topics, including the mechanics of the project, the need to place CAL in a rack as close to the center of gravity on the ISS as possible for the closest point to zero gravity. Listeners asked lots of questions about CAL, but they also had questions for Anita  regarding her expertise in entry, descent, and landing (EDL) from her recent work with Curiosity and the super sonic parachute.  In talking about human spaceflight, at one point Anita remarked that CAL was a hybrid project as it is definitely a robotic science mission but they interface with the ISS astronauts so CAL and the team have feet in both worlds.  In talking about the CAL hardware, we learned it was designed as an ORU, an orbital replacement unit.  Doug called in regarding EDL on Mars from Phobos and the use of strategically placed propellant depots in orbit around Mars and how that might simply a Martian EDL.  Anita provided much technical information on this subject and we learned that the actual EDL is driven by the entry mass and the need to dissipate energy. She talked about the difference in  a human EDL protocol and a robotic mission EDL protocol and said the human EDL has not yet been devised or worked out.  Near the end of the program, Anita explained more about laser cooling, including photons pushing atoms which slows them down and makes them cooler.  This enables more accurate laser tuning for the research. Susan asked her if she learned about the engineering for her project from grad school or from OJT.  As you will hear, the basics from grad school and the specifics OTJ.  Near the end of our program, we talked about the role of a project manager and auditing Anita’s USC class which might be possible when she teaches an upcoming graduate class online. We also talked about career choices and would one rather work on a humans to Mars flight or robotic missions.

Please post comments/questions on The Space Show blog above.  Dr. Sengupta provided her contact information on air at the end of the program or you can email her through me if you prefer.

Dr. Duane Graveline, Friday, 1-25-13 January 24, 2013

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Dr. Duane Graveline, Friday, 1-25-13

Co-Host Heather Archuletta

http://archived.thespaceshow.com/shows/1936-BWB-2013-01-25.mp3

Guests: Dr. Duane Graveline, Heather Archuletta.  Topics: Bed rest microgravity simulation studies. Dr. Graveline is the father of this research. 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. Duane Graveline to the program to discuss bed rest simulation microgravity studies, the early days of pioneering of his having pioneered this research, aerospace medicine and much more in our 1 hour 23 minute discussion. Dr. Graveline is the father of this research dating back to the late 1950s.  Please visit his website, www.spacedoc.com.  Heather Archuletta, the Pillownaut Astronaut, returned to co-host with me for this important discussion.  Check out Heather’s blog posts about Dr. Graveline and his work at http://pillownaut.blogspot.com/2013/01/the-bed-pilot-pioneer.html.  Dr. Graveline has allowed us to use two specific pictures referring to his pioneering work and both are on The Space Show blog per the above URL.  Picture 1 is Dr. Graveline’s water immersion tank and Picture 2 is the LBNP device. He discusses both of these in the program’s first segment.  Dr. Graveline started out with an overview of his early work, how he got into the field, his decision to join the Air Force and why this area of medicine interested him.  He explained his early bed rest tests and talked about the challenges with the test subjects. Heather and Dr. Graveline compared those early tests to those of today that Heather has participated in.  It was a fascinating compare and contrast, especially regarding the discipline of test subjects then and now. Dr. Graveline talked about water immersion, the aerospace lab he used, and his water immersion tank.  Don’t forget to check out the picture of it on the blog.  Dr. Graveline is looking through the window at the floating test subject.  Would you like to float as Dr. Graveline explained for one full week nonstop?  Throughout our discussion, Dr. Graveline told us many interesting and sometimes funny stories from his past like his visit to the Today Show and their wanting him to wear “flippers!”  Our guest described the low body negative pressure device (LBNP) which you can see in the second photo on the blog.  He talked about it, the old Soviet program, Mir and tilt table tests.  Dr. Graveline talked extensively about the Soviet program, how he was able to monitor much of their data, & he told us about Alexi Leonov when he had serious problems when caught outside his spaceship.  Many questions were asked about early animal studies, Laika, and more.  He told us how they were able to do blood pressure readings on dogs & the Soviets bragged about it since Dr. Graveline was able to figure out, copy, & improve the Soviet system.  Mice and centrifuge studies were discussed in some detail & Heather and Dr. Graveline had comprehensive discussions about exercise in the bed rest studies of today as compared to none in the early days of the studies. Dr. Graveline talked with Heather about his idea to abandon exercise in space so the astronauts could concentrate on their work, then return in a hydropod and rehab completely back on Earth for a few months.  You don’t want to miss this discussion or explanation from Dr. Graveline as to why this approach should be considered and tested by NASA.

     In the second segment, we talked about bone density issues and the applicability of space research and findings to terrestrial medical issues for people with this medical problem.  He was asked about a long duration HSF to Mars and he said the bigger problem was galactic radiation which he talked about in some detail.  He said that as of today, there are no mitigation tools for this problem.  The discussion went back and forth about water immersion and the use of the hydropod for returning astronauts & Heather talked about prohibitive costs & that immersion is not used today.  One of our UK listeners asked Dr. Graveline about his being part of Group 4 – The Scientists.  As this was the first astronaut group that was not composed of test pilots, our listener wanted to know about the selection process & getting more scientists to the Moon & on missions.  Dr. Graveline had much to say about this subject & shared with us some terrific & historical stories from the past.  He talked about Spacelab, astronaut Bill Pogue, & shared science stories with us.  During our program, Heather, with her bed rest study experience & her recruiting work (listen to her Space Show program on the studies she has recent completed at http://archived.thespaceshow.com/shows/1926-BWB-2013-01-08.mp3 from Jan. 8, 2013), contributed greatly to the discussion and Dr. Graveline was equally interested in talking with her about the program today as compared to the program he started decades ago.  Dr. Graveline’s book, “From Laika With Love: Secret Soviet Gifts to Apollo,” is still available. If you order it from Amazon using this link, Amazon will make a contribution to The Space Show/OGLF:  http://www.amazon.com/From-Laika-With-Duane-Graveline/dp/1424338700/ref=onegiantlea20.  Dr. Graveline was also asked about the use of his research today and if young scientists & researchers interested in the field still study his early work.  He said yes and talked about how much easier it was to do that today due to the internet.

     If you have questions/ comments for Dr. Duane Graveline or Heather Archuletta, post them on The Space Show blog per the URL above.  If you want to email Dr. Graveline or Heather, you can do so through me.  You can also comment and contact Heather through her blog which is mentioned earlier in this summary.

Here are Dr. Graveline’s photos discussed above:

Graveline Immersion Tank

Graveline Immersion Tank

 

Graveline LBNP Device

Graveline LBNP Device

 

Dr. Richard Obousy, Dr. Eric Davis, Dr. Harold Sonny White, Friday, 1-4-13 January 5, 2013

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Dr. Richard Obousy, Dr. Eric Davis, Dr. Harold Sonny White, Friday, 1-4-13

http://archived.thespaceshow.com/shows/1923-BWB-2013-01-04.mp3

 

Guests: Dr. Richard Obousy, Dr. Eric Davis, Dr. Harold Sonny White.  Topics:  Faster Than Light (FTL) Travel, Warp Drive, Interstellar Travel. 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 our three guests, Drs. Obousy, Davis, and White to the program to discuss FTL travel, warp drive, and interstellar flight.  More information is available at the Icarus Interstellar website, http://www.icarusinterstellar.org.  We did not take a break during our program.  Also, at times our discussion was technical and scientific. I looked up many terms & used my search engine frequently during the discussion given the advanced nature of the subject and our discussion.  Don’t be shy about looking up that which you may not understand or know about. I promise, if you do it will be well worth your time.  We started with an introduction to Icarus Interstellar, FTL travel, and why interstellar propulsion & travel is important.  Our guests then suggested the two most common approaches to FTL travel included warp drive and worm holes.  For most of the program, we focused on the characteristics and research around warp drive.  Our guests explained their research, including how they were able to develop the theories that reduced the amount of energy needed for warp drive from Jupiter size energy requirements to energy requirements representing the approximate mass of Voyager 1.  Our discussion addressed the Miguel Alcubierre warp drive in light of the advanced work by Dr. White and others.  The concept of the McMonigal Fatal Flaw was addressed with our guests explaining why it was not applicable.  The workings of the warp drive were explained and though the discussion was heavy in physics, I urge you to take the time and embrace & learn about the advanced theoretical physics subjects discussed by our guests.  Later, a listener asked about the use of a sun gravitational lens telescope at a specific AU from the sun as perhaps an alternative to interstellar flight.  As you will hear, such a device would likely be a good tool enhancing FTL travel, not replacing it.  As our discussion progressed, or guests rebutted many of the warp drive criticisms. Near the end of the program, we talked about what was needed to go from the lab and theory to small scale demo experiments to prove out the concepts.  Our guests referenced to the Chicago Pile-1(CP-1) 1942 nuclear experiment & the subsequent step by step evolution of nuclear technology.  Our guests talked about starting small with a demo proof and evolving upwards with more and more discovery, technology, and engineering.  Another example cited for the typical development path included the discovery of the electron in 1897 followed by the discovery of the proton in 1917, and the discovery of the neutron in 1932. Throughout our discussion, our guests put forth compelling reasons why we should be developing FTL travel and interstellar spaceflight.  Their respective concluding comments reinforced the importance and why of our being interested in FTL and exotic concepts.

Please post your comments/questions on The Space Show blog per above.  If you want to email our guests, you can do so through me.

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