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Anthony Young, Friday, 4-10-15 April 11, 2015

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Anthony Young, Friday, 4-10-15

http://archived.thespaceshow.com/shows/2450-BWB-2015-04-10.mp3

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Guest: Anthony Young. Topics: Spacesuits & pressure suits for suborbital flight 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 Anthony Young back to the show to discuss the use of spacesuits in suborbital flight based on his Feb. 16, 2015 Space Review article, www.thespacereview.com/article/2695/1. During the first segment of our 1 hour 47 minute program, Anthony talked about his Space Review article and the Virgin Galactic accident from last year plus their goal of flying spaceflight participants in a short sleeve environment. We spent much of the segment talking about the pros and cons of using pressure suits as opposed to having a pressurized cabin and short sleeve environment. Anthony mentioned the other space vehicle programs and what he said were there plans to use pressure suits as opposed to non-pressure suit environment. Listeners asked him several questions by email. For example, BJohn wanted to know if the same spacesuit being talked about could be use for EVA purposes. Michael Listner took issue with Anthony comparing the early days of aviation to spaceflight saying the political, legal and media environment were completely different in the early days of aviation. He suggested that today a serious incident during a revenue-generating flight would raise a huge outcry and would probably kill the industry. Both Anthony and I disagreed with him on his conclusion.

In the second segment, we talked about work being done on a new generation of spacesuits for the commercial space tourism industry and Anthony mentioned several spacesuit companies and developers. He also talked about the special training Felix Baumgartner had to have to avoid panic attacks in the suit. Listeners continued with email questions including one asking if any airline companies had looked into suborbital flight. John in Florida called to talk about efforts to lower the cost for spacesuits. Toward the end, Anthony addressed his latest Space Review article which was about Sarah Brightman going to the ISS later this year (www.thespacereview.com/article/2724/1).

Please post your comments/questions on The Space Show blog. You can reach Anthony through me or his Space Review articles.

 

Dr. Ajay Kothari, Tuesday, 4-29-14 April 30, 2014

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Dr. Ajay Kothari, Tuesday, 4-29-14

http://archived.thespaceshow.com/shows/2234-BWB-2014-04-29.mp3

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Guest:  Dr. Ajay Kothari.  Topics:  Rocket reusability, 1st  2nd stage reusability, space tourism, & 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 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 Dr. Ajay Kothari to the show to discuss first stage  and full rocket reusability.  During the first segment of our 1 hour 44 minute discussion, Dr. Kothari opened with references to his April 14, 2014 Space Review article, “Robust and Reusable.”  I suggest you read this article and have it handy as a reference as you listen, http://thespacereview.com/article/2490/1.  Dr. Kothari explained  his model and analysis process to evaluate the costs and economics for rocket reusability options.  Our guest goes through his models and scenarios for us, notes that they are only for TSTO rockets (2 stage to orbit), plus he identifies his analysis and software tools.  His analysis led him to understanding the importance of the First Unit Production Cost (FUPC) and how this is a killer without a high rocket launch rate.  Dr. Kothari then talked about the possibilities for space tourism.  As you will hear, he thinks much more of orbital tourism over suborbital tourism which is understandable when you see his costing, price points, percentage of net income being spent on the flight, & a few other parameters.  When asked if he thought orbital space tourism would be the economic driver for rocket reusability, he said he thought it had the potential to be a significant contributor to it.  Listener Paul asked him about the reusability penalty due to added mass for a reusable rocket.  Ajay said they addressed that in their model and suggested a reusable rocket capable of the same payload and destination as an expendable would need to be 2-4 times the size of the expendable!  John from Ft. Worth was a caller with many questions but near the end of this segment, he asked for Ajay’s thoughts on the SpaceX reusable system and process.  Our guest thought highly of the SpaceX effort, process, and concept.  We also talked about both flyback and boostback options.

In our second segment, Dr. Jurist called in and addressed efficiencies in the learning curve which benefit expendables over reusables though our guest was quick to point out that after decades we still cannot build on these learning curve efficiencies to move further out with expendables in technology and cost reduction.  Dr. Kothari and John spoke about the flight rate b/e point which is largely unknown.  I then asked our guest about full rocket reusability and his ideas for a hypersonic second stage to orbit and back.  Dr. Kothari spent time with us during the balance of our program discussing his concept.  We even discussed point to point transportation as a result of this model and he suggested the innovative idea of combining limited orbital space tourism with Point to Point to make it more acceptable. Don’t miss his explanation of this idea.  Tim called in wanting to know about landing large payloads on Mars , possibly using inflatables or magnetic fields generated by a hypersonic in the Martian atmosphere. Doug was our last caller asking about rarefied gas flow & possibly returning to Earth from the Moon with a lighter weight heat shield, even what bouncing off the Earth’s atmosphere meant for Earth capture of the incoming spacecraft.  Our guest talked with him about this along with steady flow or steady heat conduction.  To conclude our discussion, Ajay summarized his models that closed the business case for orbital space tourism, including the one model that could not close.  Note the parameters he talks about for each model.  For more information, check out Dr. Kothari’s website for Astrox Corporation (www.astrox.com).

Please post your comments/questions on TSS blog above.  You can reach our guest through me.

Dr. William Halal, Sunday, 1-5-14 January 6, 2014

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Dr. William Halal, Sunday, 1-5-14

http://archived.thespaceshow.com/shows/2157-BWB-2014-01-05.mp3

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Guest:  Dr. William (Bill) Halal.  Topics:  Space forecasting for the near and long term.  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. William Halal to our program for a 1 hour 48 minute discussion on predictions for both near and long term space development.  In our first segment, we focused on the near term predictions that mostly centered on continued growth of space commercialization and the emergence of space tourism.  Additional topics talked about in the first segment included the Chinese space program and its possible impact on the U.S. space program, heavy lift and SLS, the space media and its potential space tourism accident response, commercial activity on the ISS, and space entrepreneurism.  Dr. Halal also directed our attention to his website, www.techcast.org which will soon migrate to www.technicalglobal.com.  Listeners asked our guest about the biggest challenges facing both commercial space and space tourism, then our guest talked about big growth possibilities with solar satellites.  Issues were addressed regarding our congress, economics, and the tensions among all the players.

In the second segment, we talked about knowledge emerging as the powerful tool of the near to intermediate term.  Dr. Halal suggested tourism would be in place around 2015 and the commercial industry would keep developing to the 2020 range.  John called from Ft. Worth to draw comparisons to our early military and aviation history, suggesting the role of the government might be to continue developing hardware and infrastructure that would eventually enhance the commercial players much the way the military aircraft had dual use with the commercial industry.  John also had comments about asteroid missions which our guest brought up in this segment.  Dr. Halal mentioned the potential of interstellar travel around 2070 and the possibility of solar satellites coming on line much sooner.  We talked about going to Mars and the Moon and about Mars One and Inspiration Mars.  Doug was the next caller and he talked about depots and large rockets, specifically for missions BLEO and the Moon.  Doug brought up SpaceX heavy lift concepts, Martian terraforming, and SpaceX orbital human spaceflight around 2017.  As our program was ending, we talked about the rate of change going on in the world today and its impact on people in different age groups.  He said we all need to be prepared for a turbulent and transformative time as he does not believe current global systems are sustainable and will have to make way for new systems and programs.

Please post your comments/questions on The Space Show blog above.  You can contact our guest through me at drspace@thespaceshow.com or his website.