The Space Show
The Space Show
The Space Show focuses on timely and important issues influencing the development of outer-space commerce, space tourism,space exploration and space development. The Space Show is committed to facilitating our becoming a space-faring nation and society with a growing and self-sustaining space-faring economy. The Space Show also focuses on other related subjects of interest to us all.
Station feed:  Created by: David Livingston |
Created on: 12 May 2005 Language: English |
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The John Batchelor Show "Hotel Mars," Wednesday, 5-6-15 (5.21MB; download) -- Guests: John Batchelor, Dr. Jeff Foust, Dr. David Livingston. Topics: Blue Origin, New Shepard, BE3 and BE 4 rocket engines, Jeff Bezos. You are invited to comment, ask questions, and discuss the Space Show program/guest(s) on the Space Show blog. 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. We do not permit the commercial use of any Space Show program or part thereof, nor do we permit Space Show programs to be edited, placed on YouTube, or other private channels & websites. Space Show programs can be quoted in news articles, papers, academic & research work but must be cited or referenced in the proper citation format. Contact Dr. Livingston for questions about our copyright and trademark policies which we do enforce. 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. Remember, your Amazon Purchases Can Help Support The Space Show/OGLF (www.onegiantleapfoundation.org/amazon.htm). For those of you listening to archives on live365.com & rating the programs, please email me the reasons for your rating. This will definitely help improve Space Show programming. Thank you. Please note that audio and transition issues are a result of copying the John Batchelor broadcast & are not within my control as they originate in the Batchelor studio. John Batchelor and I welcomed back Dr Jeff Foust to update us on the recent Blue Origin New Shepard suborbital vehicle test flight. In addition, we talked about their engine development program on the BE3 rocket motor and then in partnership with ULA, the BE4 rocket motor. Jeff described the New Shepard test flight their attempt at recovering the booster stage which will eventually be reusable, plus their rocket motor development program and both their suborbital and orbital plans. You can email Mr. Batchelor or Dr. Foust through me at drspace@thespaceshow.com
Selected by: David Livingston [ stations ], Thu, 07 May 2015 14:40:28 UTC
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Darren Charrier, Tuesday, 5-5-15 (47.57MB; download) -- Guest: Darren Charrier. Topics: Darren's SEDS projects for a 3D printed engine, lunar lander, 6U cubesat communications unit, HE3 lunar mining & 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. 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 UCSD freshman aerospace engineering student Darren Charrier to the show to discuss his UCSD SEDS projects including building a 3D rocket motor and a 6U cubesat communications center for their lunar lander. Make sure you see the video of his TED talk, www.youtube.com/watch?v=e9umkenQDoY. In the first segment of our 1 hour 27 minute program, Darren started off explaining his interest in space, the Moon, and mining lunar HE3 to solve energy problems around the world. He also explained why he decided to attend UCSD over other aerospace engineering schools. We then got into the specifics of the three SEDs projects being worked on at UCSD by Darren's team, the 3D printed rocket motor which was an existing program before Darren came to UCSD, plus the lunar lander and the 6U cubesat lunar orbiting communications satellite needed for their lunar lander. The group intends to ride share to the Moon but it was too early to announce anything specific about that. The timeline is by Darren's graduation from UCSD in approximately four years. We also learned that the 3D rocket motor will enter the competition later this summer in Green River, UT (we usually do a Space Show program on this event once the winners are known), plus their 6U cubesat bird will be entered in a NASA competition. Darren was asked about his team and the UCSD administrative support for their projects, plus he was asked for specifics regarding the 3D printed rocket motor including its performance specs. Darren talked about fuels that will likely be used by the 3D motor plus they may use a version of it to propel the lunar lander which they want to make a soft landing on the lunar surface. Abut the lander, I inquired what it would do on the surface. He said they would be pleased if it accomplished the soft landing plus survived a lunar day. They want it to call home and take photos. Our guest received several questions about the UCSD SEDS chapter as well as SEDS on a national level. One listener asked him if they had ITAR issues, especially with foreign students. Don't miss his response to this question. Bill called from Chicago to talk about Darren given he knows hm. We learned much about this young, inspired student and future industry leader. In the second segment, I asked Darren if he wanted to carry out his lunar plans as a private company or with government. He wants to be a private company with the government as a customer. We also talked about Darren's larger set of plans for the Moon including his starting a lunar landing business, servicing lunar tourism, additional mining over and above HE3 and more. Read the rest of this review at www.thespaceshow.com or http://thespaceshow.wordpress.com. Selected by: David Livingston [ stations ], Wed, 06 May 2015 15:49:40 UTC
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Bruce Pittman, Monday, 5-4-15 (28.91MB; download) -- Gust: Bruce Pittman; Topics: ISDC 2015 conference and related topics. 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 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 Bruce Pittman back to the show to discuss the upcoming ISDC 2015 Conference to be held in Toronto, Canada from May 20-24, 2015. During our one hour program, Bruce talked about ISDC events in general, then the Toronto location for this year's conference and the conference location, the Hyatt Regency Toronto. ISDC is a multi-track conference with workshops and an excellent exhibit hall. For more information, registration, hotel bookings, visit the ISDC 2015 website, http://isdc2015.nss.org/wordpress. From time to time during our discussion, Bruce mentioned a separate event needing separate registration, The Space Innovation Business Summit (http://isdc2015.nss.org/wordpress/the-space-innovation-business-summit). Bruce also went over the list of the keynote speakers, all of which are listed on the ISDC 2015 website. In fact, I strongly suggest you open the website and follow along with us during our discussion about the event. Bruce also said there would be upwards of 300 students present from around the world as a result of the Space Settlement Contest. Bruce highlighted both India and Romania for their student participation in the contest and ISDC 2015. Listeners asked many conference questions including networking, Q&A sessions, and inquiring if there was both a propulsion track topic and a human factors track topic. Toward the end of our discussion we took a call from Doug regarding EML2, depots, fuel, Mars transportation, etc. If you are planning to attend, remember you need a passport to enter Canada. Reserve early for the hotel, the conference and your transportation. ISDC is a terrific event. If you attend, I want to hear from you about it on The Space Show. Please post your comments/questions on TSS blog. Selected by: David Livingston [ stations ], Tue, 05 May 2015 03:26:33 UTC
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Damian Peach, Sunday, 5-3-15 (43.49MB; download) -- Guest: Damian Peach. Topics: Amateur astronomy & imagine, viewing techniques, atmospheric issues & 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. 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 Damian Peach, well known amateur astronomer from the UK to the show. Visit his website for more information and to see his work, www.damianpeach.com. During the first segment of our 90 minute program, Damian talked about his early interest in space and the definition for an amateur astronomer. We learned most are self taught as was the case with Damian, that the field was not as math intensive as a professional astronomy career and that amateur astronomers significantly contribute to the field of astronomy and work well in harmony with professional astronomers. During this segment, listeners had many questions for our guest including asking if he had sponsors, the cost of amateur equipment, his typical viewing schedule on the South Coast of the UK where he lives and his other location, Barbados. In fact several questions came in about viewing conditions in Barbados and the effect of weather and humidity on his viewing in that location. Damian likes to photograph Jupiter and Saturn and the bigger outer planets. Don't miss the why behind this. As you will hear and you can see on his website, he has also done lots of excellent imaging of the Moon. I asked him about his interest in going to Mars, human spaceflight, and more, all of which he said he was interested in. Other first segment topics included wanting to know more about his techniques, amateur spectroscopy, and amateur peer review. Regarding his interest in Jupiter, he talked at length about the always changing Jupiter weather that he liked to document in his Jupiter photography. In the second segment, he talked about the upcoming JUNO Mission to Jupiter & the need for amateur astronomers to take images and submit them to the JUNO team. Other topics in this session included cubesats, amateur astronomy groups in Europe, the U.S. and elsewhere, plus Pluto and New Horizons. Listeners asked about amateur solar and deep space astronomy, cosmic rays, and more. Science fiction came up as did the movie Interstellar. Later, Ben sent in a note while looking at Damian's Mars images on his website and asked about color enhancing and photo touchups. Imaging Mercury and Venus came up in the discussion as did light pollution, viewing & searching for comets & NEOs. Near the end of the program, we talked about Ceres and the Dawn Mission from the amateur perspective. Near the end, I asked Damian his first choice mission were he the space mission guru. I bet you will be surprised by what he said. Dr. Dewar asked about making space access available with space based telescopes through nuclear propulsion given the cost of launch would be so much cheaper. Don't miss Damian's response.The rest of this summary is @ www.thespaceshow.com & http://thespaceshow.wordpress.com Selected by: David Livingston [ stations ], Mon, 04 May 2015 15:57:09 UTC
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Brent Sherwood, Friday, 5-1-15 (29.85MB; download) -- Guest: Brent Sherwood. Topics: Human spaceflight, The year of the dwarf planets, Pluto, Ceres, budget math for 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. 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 Brent Sherwood for updates to his human spaceflight analysis work previously presented on The Space Show. During the first segment of our 1 hour 48 minute discussion, Brent started out with a brief discussion on scientific missions and the year 2015 being the Year of the Dwarf Planet. He talked about the Dawn Mission and Ceres, New Horizons and Pluto, and the oceans on the outer planet moons. Exoplanets and the habitable zone were also part of this discussion which included an assessment of just how our knowledge has changed regarding the compositing of the solar system. To redirect the conversation to the purpose of today's show, human spaceflight (HSF), I asked Brent when we would see HSF beyond LEO (BLEO). I asked about what seemed to be a new space advocacy push for space settlement. Brent then examined why HSF and referred us to his earlier work and the four reasons for HSF which were explore, exploit resources, to experience space, and settlement. He said settlement was clearly part of the debate, talked about earlier workshops which would avoid the topic and then spoke to the recent Pioneering Space meeting held in Washington, DC where there was a consensus reach for space settlement. He had good things to say about the meeting and the consensus resolution and talked about the broad space industry representation at the meeting as it was not just NewSpace. Don't miss what he had to say about it and space settlement. Brent was also asked if our National Space Policy Act needed to be amended to reflect space settlement as the official goal of NASA. Later, he was asked about the stepping stone or incremental approach to HSF development. He supported this approach, spoke to the challenges for HSF such as life support and more. As we were closing out the first segment, he offered us valuable insights on this topic so don't miss what he had to say. In the second segment, John from Florida called in to ask about grand space visions like an O'Neill orbital colony. Brent proceeded to discuss grandiose visions in the context of how challenging they were plus their replacement cost. Here, he used the replacement cost for Manhattan as an example of what he was talking about. He cited a different type of example, the NASA Ames Space Settlement Contest that had nearly a thousand entries this year from 21 countries with the winner writing a 247 page grand space vision report. Brent also spoke to the inspiration factor when talking about this contest. A variety of listener emails were read on air for Brent to respond to, then I asked him if he thought Mars was the Holy Grail for HSF. He said no so don't miss why he said that.Read the rest of this summary @ www.thespaceshow.com or http://thespaceshow.wordpress.com. Selected by: David Livingston [ stations ], Sat, 02 May 2015 15:26:41 UTC
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John Batchelor Hotel Mars, Nancy Atkinson, Wednesday, 4-29-15 (5.73MB; download) -- Guests: John Batchelor, Nancy Atkinson, Dr. David Livingston. Topics: Apollo 13, Gimbal-lock, Passive Thermal Control and Cmdr. Jim Lovell. You are invited to comment, ask questions, and discuss the Space Show program/guest(s) on the Space Show blog. 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. We do not permit the commercial use of any Space Show program or part thereof, nor do we permit Space Show programs to be edited, placed on YouTube, or other private channels & websites. Space Show programs can be quoted in news articles, papers, academic & research work but must be cited or referenced in the proper citation format. Contact Dr. Livingston for questions about our copyright and trademark policies which we do enforce. 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. Remember, your Amazon Purchases Can Help Support The Space Show/OGLF (www.onegiantleapfoundation.org/amazon.htm). For those of you listening to archives on live365.com & rating the programs, please email me the reasons for your rating. This will definitely help improve Space Show programming. Thank you. Please note that audio and transition issues are a result of copying the John Batchelor broadcast & are not within my control as they originate in the Batchelor studio. John Batchelor and I welcomed Nancy Atkinson to the program, to discuss her April 24, 2015 Universetoday.com article, "13 More Things That Saved Apollo 13, part 9: Avoiding Gimbal Lock." See www.universetoday.com/119984/13-more-things-that-saved-apollo-13-part-9-avoiding-gimbal-lock. During our Hotel Mars segment, we discussed Gimbal-lock, the use of Passive Thermal Control, and the piloting skills of Jim Lovell in bringing Apollo 13 safely back to Earth. I'm quite sure you will find this to be an interesting discussion. You can email Mr. Batchelor or Nancy Atkinson through me at drspace@thespaceshow.com.
Selected by: David Livingston [ stations ], Thu, 30 Apr 2015 15:20:32 UTC
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Open Lines, Tuesday, 4-28-15 (66.60MB; download) -- Guest: Open Lines with Dr. David Livingston. Topics: Space Show website & possible crowd funding program, a variety of other space topics. 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 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. Welcome to this two hour Open Line discussion on a variety of topics. Note that while I took two breaks during the discussion, I am still archiving the show in just two segments. During the first segment, my suggested discussion topics included my response to an April 10 email from Doug wondering why I strongly believe that the economic development of space will be a sizeable part of the future economy. I answered this question for Doug on air and during the show a few listeners added to my answer. My next suggested topic dealt with The Space Show website problems and the development of a new site to be funded by a crowd funding program. I asked listeners for suggestions for incentives to offer contributors to the crowd funding venture. While most offered excellent and serious suggestions, one or two listeners responded with sarcastic comments and probably in their mind, funny comments. But I am very serious about this. The Space Show website is moving, we are trying to move the existing site to stay up with something that works and all of you are familiar with as a completely new site needs to be funded. If you do have suggestions for incentives for supporting our crowd funding effort, post them on the blog or email them to me. I appreciate this. Our first caller was Andrew in Tucson who called from the top of Kitt Peak as he was there working two telescopes and doing observatory work. We talked with Andrew about his work and project, the telescopes, life on Kitt Peak, light pollution in the area and more. We also talked with him about other observatories in Tucson and Flagstaff, plus since he has been to Mauna Kea in Hawaii, we talked about that as well. I planned a visit to him on Kitt Peak and will do some recorded interviews while there for future Space Show program. We took a break at the top of the hour and returned to talk with Jeff from Tucson about his work with Andrew and his thoughts on the ULA-Vulcan project plus comments by the new ULA head, Tory Bruno. I asked if he had read the recent Space Cynics post on ULA Vulcan by Shubber Ali who pretty much dissed the venture (see https://spacecynic.wordpress.com - the lead post). Jeff briefly looked at it and said it lacked numbers and fact and was an opinion piece. What Jeff then had to say was based on engineering, numbers, and fact and he thought it was a good project. Don't miss what Jeff had to say about ULA Vulcan as it was a good call. Jeff's called sparked others to comment on both ULA and SpaceX and I made the case for needing both companies and more to help the emerging commercial space industry grow and develop. Read the rest of this summary at www.thespaceshow.com or http://thespaceshow.wordpress.com. Selected by: David Livingston [ stations ], Wed, 29 Apr 2015 16:11:09 UTC
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Eric Berger, Monday, 4-27-15 (51.75MB; download) -- Guest: Eric Berger. Topics: Space policy, NASA's future, commercial space, human spaceflight challenges, & lots 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. 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 Eric Berger to the program for a wide ranging discussion on US space policy, NASA, our space future, commercial space and more. During the first segment of our 1 hour 37 minute show, Eric started the discussion by talking about his early interest in space, his contacting NASA as a child, getting back a great set of photos and other information and being hooked and excited about space ever since. Some of the early topics in this segment included his surprise that we are not yet beyond low earth orbit with manned spaceflight, then he addressed why it is taking so long to go to Mars , why Mars is the next big step for humans and why going to Mars is so hard. In his discussion of these topics, he referenced Elon Musk and the SpaceX Mars plans, even Mars One. I asked Eric for his perspective on the NASA ARM mission which led to one of many discussion of NASA budget constraints and the idea that this or that project is all that can be done within the budget permitted by Congress. Eric started getting lots of listener emails. Jenkins wrote in saying that its not the budget that is the problems, the choices we make as a country regarding how we spend money that is the problem. Eric then referenced the human spaceflight study released last year by the NRC regarding the likelihood that we will be living with tight NASA budgets for the foreseeable future. Paul in New Mexico asked Eric about the impact of commercial space on policy and NASA. Eric said it was an important impact so don't miss his full statement. Later in the segment, we talked about his seven part "Adrift" series last year and I asked him what his biggest surprise was in researching the articles for the series. He said it was finding a shift in his view on SLS and that SLS could very well be an important part of our spaceflight future but that it needs to be funded to launch real programs. He also said that maybe Falcon Heavy could do most of what SLS could do, especially in the Earth-Moon systems but that remains to be seen. We then talked about the time it took to do various parts of Apollo compared to how much time it takes to do just about anything in space today. Michael Listner called to talk about needing both NASA & commercial space and some realities involved in policy and space issues. As the segment was ending, a Portland listener asked if competition with China might develop and force the US to spend more and do more in space. Don't miss Eric's answer. In the second segment, Eric was asked about space settlement being the goal and the purpose of our National Space Policy through a change in law per March Storm and other groups who are advocating this. See the rest of this summary @ www.thespaceshow.com or http://thespaceshow.wordpress.com. Selected by: David Livingston [ stations ], Tue, 28 Apr 2015 18:41:24 UTC
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Webinar: Propulsion Design Choices w/Dr. John Jurist, Sunday, 4-26-15 (43.51MB; download) -- Guest: Dr. John Jurist. Topics: Choices and consideration in configuring launch systems. 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 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. Welcome to this two hour webinar regarding the choices and considerations that can be made in designing and configuring launch systems. Note that on the blog for this program are two Power Point presentations for your use. Dr. Jurist referred to both of them during the webinar, especially the presentation titled "Choices: Some Considerations in Configuring Launch Systems." I urge you to follow along with them during the webinar. During the first segment, Dr. Jurist explained the target market for the webinar and his two presentations. He then talked about how hard it was to go to Mars and do other missions. Then he got to the point by saying in designing or configuring the launch system for a mission, you started with the payload requirements which then provide additional constraints once the payload has been defined. He also talked about the application of the basic rocket equation and explained the importance of exhaust velocity, the Delta-v, and the mass ratio. Listeners started asking questions so two stage compared to single stage was discussed. John pointed to the Choices presentation, slide 8. He talked about propellant and pressures, both in a pressure fed system and with a turbo pump system. Another listener asked about solids versus liquids, then Marshall called to talk about rocket g forces. Dr. Jurist talked about designing the rocket envelope environment to the payload specifications. He then brought in and discussed the vibration envelope. Helen asked how things would be different with a human payload rather than a satellite or cargo. Reliability was a big concern. Near the end of the segment, Dr. Jurist talked about payload mass in Leo and BLEO. Doug inquired about the gravity loss during the launch, then the segment ended talking about heavy lift, solids and proportional cost factors for SRBs. In the second segment, Penny asked how the variable that had been discussed would change were one launch from the Moon or Mars. Adrian emailed in about the NERVA rocket and nuclear propulsion. Dr. Jurist used the German V2 as an example of launching from the Moon. Specific impulse and exhaust velocity came up again, then the focus turned to rocket motor cooling systems. Questions continued coming in asking about 3D printing of rocket motor parts to lower the cost and the use of hybrid rocket fuels with their advantages and disadvantages. Regulatory issues came up in this segment as did political issues, plus our guest got a question about amateur rocketry. A listener asked about environmental concerns over rocket fuel . Dr. Jurist directed the audience to the Choice presentation, slide 22, and talked about ways to possibly shed some weight such as dumping the payload shroud. See the rest of the summary @ www.thespaceshow.com or http://thespaceshow.wordpress.com. Selected by: David Livingston [ stations ], Tue, 28 Apr 2015 18:38:58 UTC
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Dr. Guillem Anglada Escude, Friday, 4-24-15 (32.73MB; download) -- Guest: Dr. Guillem Anglada. Topics, Gilese 581d, exoplanets, detection methods, physics, astronomy 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 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. Guillem Anglada to the show from the UK to speak with us about Gilese 581d, exoplanet detection methods, specifically Doppler spectroscopy, and more. During our one segment one hour discussion, Dr. Anglada explained to us why Gilese 581d (G 581d) has become a benchmark for the Doppler technique for finding exoplanets. In explaining this to us, we also defined and talked about the habitable zone and why the Doppler technique works better for nearby stars as lots of light is needed. We talked about the G system red dwarf or low mass star. I asked our guest about telescopes and just how big a telescope had to be to see G581d for example. At this point in the discussion, we began getting a series of email questions from listeners that were technical and superb. I read them all on air ranging from asking about microlensing to occulters, to questions about our Sun and much more. I asked Dr. Anglada what Earth would be like were we standing on G 581d and trying to detect Earth. Do not miss his answer, it might surprise you. Listeners also asked about the impact of the exoplanet field on students and if it was driving STEM enrollment. We got two emails from a new country during this show as Michael sent in questions from Slovenia. In one question, he asked about a free-flying coronagraph that could occult stars for direct imaging, especially for ground based telescopes. There was more to his question so don't miss it. His other question was about detecting Oort cloud objects. Our emailers asked about the transit method for finding exoplanets and our guest discussed alternative methods as well. We talked about future exoplanet finding missions similar to Kepler such as TESS and PLATO. Near the end of the show BJohn in one of his questions asked about the use of radio waves for finding exoplanets. This is a very informative and high level discussion with our guest who we will certainly have back on The Space Show. Please post your comments/questions on The Space Show blog. You can reach our guest through me or his university's faculty page. Selected by: David Livingston [ stations ], Sat, 25 Apr 2015 17:14:53 UTC
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