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, 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 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. Near the end, John got questions about the Falcon Heavy, Doug called in with questions about lunar lander economics and more. In closing, Dr. Jurist said "the fundamental theme of the presentation was the many variables that come into play in designing or configuring a space launch system, how the many variables are inter-related, and how every decision in the process constrains or narrows the remaining options." Please post your comments/questions on The Space Show blog above. You can contact Dr. Jurist through me.
Guests: Webinar with Rick Boozer, John Hunt. Topics: Our guests debated the merits of the SLS rocket. Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, 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 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 Rick Boozer and John Hunt to the program for our special WEBINAR SLS Debate. You can hear the audio only for this debate as you would any Space Show program. The video can be found on our Vimeo Space Show Channel, vimeo.com/channels/thespaceshow. Rick's book on the subject, "The Plundering of NASA: An Expose" is available on Amazon. If you purchase the book and I hope you do, please use the OGLF/Space Show Amazon portal so Amazon will make a contribution to TSS. Instructions are on the website, the blog, and all program archive summaries. During the first segment of our two hour webinar, both John and Rick made five minute opening statements followed by a 2.5 minute rebuttal of the position statement by the other guest. Rick Boozer does not support SLS and John Hunt does support it. John went first, putting forth a good summary of why he supports SLS, the benefits it provides, and the importance of the project. Rick's opening statement outlined why he opposes the SLS rocket, calling it an "existential threat." He also said SLS was a "rocket to nowhere." The opening statements provided the basic positions for both guests as they debated all aspects of SLS so do carefully listen to their respective position comments. We took both calls and emails from listeners. Evon emailed in wanting to know what the money saved from SLS would best be spent on. John pointed out that there was no assurance that any savings would even be spent on space let alone his priorities. While Rick agreed, he did list several projects he felt far more deserving of funding, including using the funds to speed up the commercial crew program since it has never been funded to the level requested by the President. Rick took the opportunity to bring up cost plus contracting and why it was not suitable for a more mature manufacturing project, instead being best suited for R&D projects. He said that was a driver in the high cost of SLS. In contrast, John cited his aviation experience with the A12 and P7 aircraft using fixed price contracts, cancellations, and more. Dr. Doug sent in a note asking about the fundamental need for a heavy lift rocket. Our guests had a different take on Doug's question so listen to how they answered it. Rick pointed out the advantages of the SpaceX Falcon Heavy as compared to the initial SLS version. In fact, comparisons to Falcon Heavy plus future SpaceX plans and public remarks made by Elon Musk were cited frequently by Rick throughout the program. John, while applauding the SpaceX accomplishments so far, strongly suggested that we see what the performance actually is on the SpaceX rockets yet to be tested & flown. John said we should not be in a hurry to cancel SLS in favor of unproven and as of yet nonexistent technology. Tim from Huntsville called during this segment to inquire about SLS in light of Falcon 9 success, reusability success and more. John suggested that reusability would be an important step forward but wanted to wait to see what it looked like when & if it becomes operationally successful. In the second half of our webinar, Dr. Doug called & inquired about both the Falcon 9 and Falcon Heavy as compared to SLS. PLEASE NOTE THIS IS A COMPREHENSIVE SUMMARY SO TO READ THE REST OF IT, VISIT WWW.THESPACESHOW.COM OR HTTP://THESPACESHOW.WORDPRESS.COM.
Guests: Laura Delgado Lopez, Yana Gevorgyan, Yusuke Muraki. Topics: Using space and satellite resources to mitigate Earth disasters. Note that several guests used cell phones so you will hear audio issues from time to time. Please note that guest and panel member Yusuke Muraki posted a Power Point presentation on this topic which can be found at the end of TSS blog archive summary. We welcomed Laura Delgado Lopez, Yana Gevorgyan, & Yusuke Muraki to the program to discuss the use of space resources and satellites for mitigating Earth-based disasters. During the first segment of our 1 hour 58 minute webinar, Laura Delgado Lopez introduced us to the discussion topic. Laura talked about the benefits & value all people receive from the use of satellite tools in aiding disaster management. She explained how space tools were used in decision making & how there are more and more new applications coming to market all the time. Yana Gevorgyan explained the role of NOAA as a government science agency & she talked about extreme weather events. As a science agency, she also spoke to the science & technology benefits along with the increasing use of international data sharing . Yusuke Muraki spoke to the role of the Asian Development Bank (ADB) in regional economic development, regional disaster management, all being assisted by satellite technology. They focused on decision management as their programs work to alleviate poverty in the area, track rainfall data & more. He cited several recent Asian weather and storm events as examples of their role & data sharing among agencies and governments. I asked our guests about the current & future role of cubesats in this field. Laura spoke to the reliability of cubesats & the limited amount of data they could send back. She said cubesats were evolving & would one day be more valuable in this area. Yusuke said cubesats were not yet fully ready for a role in this field but that as they become more powerful they will play an increasingly important role over time. A listener asked about the use of drones. Yusuke said they were not very good for covering large areas. Listeners asked our panel about forecasting and even prevention rather than using these tools for after the event assistance. Yana suggested that since each disaster is unique, even extreme weather events, lots of data sharing and international cooperation takes place. She listed several types of disasters that are better understood than others. Slow onset disasters such as draughts are not as well understood as the extreme weather event or those that unfold very fast. Another listener emailed in about space assets being used for he Ebola outbreak. Lots was also said about the role of the U.S. leadership in global disaster management. Other topics in this segment included disaster policy, federal data management, and accessing data by the public. As the segment was closing, I asked our guests if the space tools were applicable/useful for individuals impacted by disasters. As you will hear, the space/satellite tools are not that useful for individuals at this time but more work needs to be done & is being done in this area. I also inquired about the space IQ of the public and if it was important for people to know that space assets were being used to help them in a disaster. In the second segment, we talked about search and rescue (SARSAT). Our guests said that since 1982 about 35,000 people had been rescued in the U.S. alone. Several listeners and I asked about the data, where did it come from, what type of data was it, was there a central clearing house, etc. Later, I asked what the worst type of disaster there was for management. Yusuke said the worst disasters dealt with water related activities. Due to comments about earthquakes, tornados, floods, even tsunamis, we learned that people get used to the warnings and even try to go to locations to see the disasters unfold. This has proved to be very risky, even the getting used to the warnings is risky on the part of people. Harold emailed in asking if space tools can stop a disaster from happening. We also talked about lessons learned and if the lessons were being applied to better handle future disaster events. Another set of listener inquiries addressed the question of the cost of data and if in a disaster situation, do organizations and governments buy the data or get it for free. The answer was mixed as you will hear. Later, listeners asked each guest about the biggest challenges in the field for using space assets for disaster management here on Earth. Each of our guests offered summary and closing comments, both as to the work done by their respective organizations as well as from the general perspective of available space tools and how they are being used and will likely be used in the future. Please post your comments/questions on The Space Show blog above. Each of our panel members can be reached through me at email@example.com.
Joe Carroll, Dr. John Jurist, Dr. Jim Logan. Topics: Partial/Artificial gravity, tethers, NASA, HSF & more. Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, 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 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. To see the video broadcast for this webinar, please go to vimeo.com/channels/thespaceshow. Note that the audio only & video archive will be posted at the same time once the video is edited, processed, and uploaded to the Vimeo Space Show channel. Joe Carroll has presentation material on The Space Show Blog which he referred to throughout our discussion so you may want to download the material or have it available to you when viewing the webinar. We welcomed back to the program Joe Carroll to follow up on his May 2011 Space Show Classroom program on the same subject. Our panel members included Dr. John Jurist and Dr. Jim Logan. All of us were part of the May 2011 program on this same topic. During segment one of our 2 hour 10 minute webinar, Joe Carroll went over his background, interest, and experience in the subject dating back to 1981. Joe discussed his recent work and updates including his concerns for the rotation rate, Coriolis effect & the absence of any substantial progress in the area. He directed us to Slide 2 & the specific language used in the 201 US National Space Policy introduction. Our guests talked about missed opportunities by NASA & others to do the essential research needed to confirm the gravity prescription for humans. Our guests also talked about unknowns regarding the effects of microgravity or Zero G on humans as we are a 1 G species. Space settlements came up for discussion. Joe talked about two extremes in the approach to settlements. He said one extreme was to simply prove issues by walking. That is, just try it. The other extreme was to do "endless research and studies," a critique often mentioned by space advocates. Jim pointed out that essentially knowing nothing about the Gravity Prescription despite 53 years of human spaceflight experience doesn't rise to the definition of "endless research and studies." Apollo was the walking theory for the most part. Our guests then talked about NASA plans for an outpost as compared to a settlement, specifically for the Moon. We received several listener emails which the guests responded to. Jim continued saying it was essential that we know at least the basic outlines of the gravity prescription for humans for long duration interplanetary spaceflight. The ISS was discussed for supporting gravity research. Tony called about 1 RPM spin rate and mentioned that SpaceX said it wanted to go to Mars by 2020. See dailymail.co.uk/sciencetech/article-2634046/Elon-Musk-says-SpaceX-making-progress-Mars-colony-2020-plans-sell-tickets-500-000.html. In the second segment, we held listener emails until the end to allow Joe time to finish his slides and conclusions. We started with Slides 6, 7 & 8. Joe talked about the inflatable tunnel & important specs. He continued taking us quickly through the slides but for those interested in the details, pay close attention to them or contact Joe as his email address is on his presentation material. Joe spent some time this segment talking about doing Gemini-like tether experiments and he also referred us to Robert Walker's work. Robert is a Space Show guest from the UK who has done excellent work on the issue of partial gravity based on Joe's work with tethers, etc. Check out Robert's paper at
science20.com/robert_inventor/crew_tether_spin_for_artificial_gravity_on_way_to_iss_stunning_new_videos_space_show_webinar_on_sunday-137070. Read the rest of the summary @ thespaceshow.com or thespaceshow.wordpress.com. Post comments on TSS blog.
Guest Speaker: Walter Cunningham. Topics: Walt's Apollo 7 & Skylab experiences, STEM & student inspiration. Please note that this talk by Walt Cunningham was recorded live at Rocky Mountain College in Billings, Montana on Friday, April 4, 2014. The copyright for this program/talk is held by Dr. John Jurist and Rocky Mountain College. Both Dr. Jurist and Rocky Mountain College have given permission for The Space Show/One Giant Leap Foundation to archive the talk on The Space Show website and blog as an audio only file and The Space Show Vimeo channel for the video presentation of Walt's comments. All questions and comments about this program should be addressed to Dr. Jurist in care of The Space Show mailing or email address per The Space Show website (thespaceshow.com). Walt was welcomed to Rocky Mountain University and began his 66 minute talk. During his talk to Rocky students and invited guests, the well known and highly regarded Apollo 7 astronaut discussed a variety of topics in this Rocky Mountain College public forum. He talked about the significance of the Apollo 7 mission, its "firsts," what it was like to fly in space, his views on the global warming controversy, and why it is important for citizens to evaluate the data and draw their own conclusions on public issues with a scientific basis rather than necessarily trusting the pronouncements of journalists and politicians. Walt's talk was very well received by Rocky students and the public and received appropriate press coverage in Billings and throughout Montana. If you want to contact Walt Cunningham, please do so through Dr. Jurist.
The Space Show
Webinars for The Space Show online radio talk show (thespaceshow.com). We interview people from all over the world involved in space development, space science, commercial space, space tourism, space policy, rockets, propulsion, aerospace engineering,…
Webinars for The Space Show online radio talk show (thespaceshow.com). We interview people from all over the world involved in space development, space science, commercial space, space tourism, space policy, rockets, propulsion, aerospace engineering, and more.
Browse This Channel
More stuff from “The Space Show”