There will not be a Crew Dragon static fire today
https://twitter.com/nextspaceflight/status/1193164758771519499?s=21
Submitted November 09, 2019 at 04:32PM by rustybeancake
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https://twitter.com/nextspaceflight/status/1193164758771519499?s=21
Submitted November 09, 2019 at 04:32PM by rustybeancake
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Twitter
Michael Baylor
There will not be a Crew Dragon static fire today. The new date is still to be determined. Not sure on the reasoning for the slips, but they are obviously going to take their time and get it right. #SpaceX
<b>r/SpaceX Starlink-1 Official Launch Discussion & Updates Thread</b>
<a href="/#%20MC%20//%20section%20intro">IntroductionWelcome, dear people of the subreddit! I'm <a href="/u/hitura-nobad">u/hitura-nobad, bringing you live updates on the Starlink-1 mission.About the missionSpaceX is going to launch its second batch of next-generation communication satellites. This mission will fly on a booster, which already has flown 3 times in the past. It is also going to be the first time, the payload fairings are reused.Liftoff currently scheduled for:November 11, 14:56 UTC (9:56 AM local)Backup dateNovember 12Static fire:<a href="https://twitter.com/SpaceX/status/1191779229798502400">Completed November 5Payload:60 Starlink version 1 satellitesPayload mass:unknownDestination orbit:Low Earth OrbitVehicle:Falcon 9 v1.2 Block 5Core:<a href="https://twitter.com/NASASpaceflight/status/1191731397918175233">B1048 (or B1049)Past flights of this core:3Fairing reuse:<a href="https://twitter.com/SpaceX/status/1191779329467748353">Yes (previously flown on Arabsat 6A)Fairing catch attempt:<a href="https://twitter.com/julia_bergeron/status/1192943438561521664">Dual (Ms. Tree and Ms. Chief have departed)Launch site:<a href="https://www.reddit.com/r/SpaceX/wiki/pads">SLC-40, Cape Canaveral Air Force Station, FloridaLanding:OCISLY: 32.54722 N, 75.92306 W (628 km downrange) <a href="https://twitter.com/GregScott_photo/status/1192442395671105536">OCISLY departed!Mission success criteria:Successful separation & deployment of the Starlink Satellites.Launch time around the worldCity 🏙️TimezoneOffset to UTCTargeted T-0 local time 🚀Los AngelesPSTUTC-806:50DenverMSTUTC-707:50HoustonCSTUTC-608:50New YorkESTUTC-509:50Buenos AiresARTUTC-311:50ReykjavikGMTUTC+014:50LondonGMTUTC+014:50BerlinCESTUTC+115:50HelsinkiEESTUTC+216:50MoscowMSKUTC+317:50Scrub counterPayloadSpaceX designed Starlink to connect end users with low latency, high bandwidth broadband services by providing continual coverage around the world using a network of thousands of satellites in low Earth orbit.<em>Source: SpaceX</em>Lot of facts☑️ This will be the 83rd SpaceX launch.☑️ This will be the 75th Falcon 9 launch.☑️ This will be the 19th Falcon Heavy Block 5 launch.☑️ This will be the 9th Falcon 9 launch this year.☑️ This will be the 11th SpaceX launch this year.☑️ This will be the 4th journey to space of the Block 5 core B1048 .Vehicles usedTypeNameLocationFirst StageFalcon Heavy v1.2 - Block 5 (Full Thrust) - B1055SLC-40Second stage | Falcon Heavy v1.2 Block 5 (Full Thrust) | SLC-40 ASDS | Of Course I Still Love You (OCISLY) | Atlantic Ocean Barge tug | Hawk| Atlantic Ocean Support ship | GO Quest (Core recovery) | Atlantic Ocean Support ship | GO Ms. Tree (Fairing recovery) | Atlantic Ocean Support ship | GO Ms. Chief (Fairing recovery) | Atlantic Ocean<em>Core data source: Core wiki by r/SpaceX</em><em>Ship data source: SpaceXFleet by u/Gavalar_</em>Live updates<a href="/#%20MC%20//%20section%20events">TimelineTimeUpdate<a href="/#%20MC%20//%20row%200"> T-2 dayStarlink-1 launch live updates and discussion thread went live.<a href="/#%20MC%20//%20row%201"> T-7 daysStatic fire has been completed<a href="/#%20MC%20//%20section%20viewing">Mission's state✅ Currently GO for the launch attempt.Launch site, DownrangePlaceLocationCoordinates 🌐Time zone ⌚Launch siteCCAFS, Florida28.562° N, 80.5772° WUTC-5 (EST)Landing siteAtlantic Ocean (Downrange)32°32' N, 75°55' WUTC-5 (EST)Payload's destinationBurnOrbit typeApogee ⬆️Perigee ⬇️Inclination 📐Orbital period 🔄1. or 1. + 2.Low Earth Orbit (LEO) 🌍~280 km~280 km~53°no dataWeather - Merritt Island, FloridaStarlink TLE (Prediction)by <a href="/u/TheVehicleDestroyer">u/TheVehicleDestroyerSTARLINK MISSION 21 00000U 19001A 19315.64775462 -.00000000 00000-0 -00000-0 0 172 00000 51.1348 168.5259…
<a href="/#%20MC%20//%20section%20intro">IntroductionWelcome, dear people of the subreddit! I'm <a href="/u/hitura-nobad">u/hitura-nobad, bringing you live updates on the Starlink-1 mission.About the missionSpaceX is going to launch its second batch of next-generation communication satellites. This mission will fly on a booster, which already has flown 3 times in the past. It is also going to be the first time, the payload fairings are reused.Liftoff currently scheduled for:November 11, 14:56 UTC (9:56 AM local)Backup dateNovember 12Static fire:<a href="https://twitter.com/SpaceX/status/1191779229798502400">Completed November 5Payload:60 Starlink version 1 satellitesPayload mass:unknownDestination orbit:Low Earth OrbitVehicle:Falcon 9 v1.2 Block 5Core:<a href="https://twitter.com/NASASpaceflight/status/1191731397918175233">B1048 (or B1049)Past flights of this core:3Fairing reuse:<a href="https://twitter.com/SpaceX/status/1191779329467748353">Yes (previously flown on Arabsat 6A)Fairing catch attempt:<a href="https://twitter.com/julia_bergeron/status/1192943438561521664">Dual (Ms. Tree and Ms. Chief have departed)Launch site:<a href="https://www.reddit.com/r/SpaceX/wiki/pads">SLC-40, Cape Canaveral Air Force Station, FloridaLanding:OCISLY: 32.54722 N, 75.92306 W (628 km downrange) <a href="https://twitter.com/GregScott_photo/status/1192442395671105536">OCISLY departed!Mission success criteria:Successful separation & deployment of the Starlink Satellites.Launch time around the worldCity 🏙️TimezoneOffset to UTCTargeted T-0 local time 🚀Los AngelesPSTUTC-806:50DenverMSTUTC-707:50HoustonCSTUTC-608:50New YorkESTUTC-509:50Buenos AiresARTUTC-311:50ReykjavikGMTUTC+014:50LondonGMTUTC+014:50BerlinCESTUTC+115:50HelsinkiEESTUTC+216:50MoscowMSKUTC+317:50Scrub counterPayloadSpaceX designed Starlink to connect end users with low latency, high bandwidth broadband services by providing continual coverage around the world using a network of thousands of satellites in low Earth orbit.<em>Source: SpaceX</em>Lot of facts☑️ This will be the 83rd SpaceX launch.☑️ This will be the 75th Falcon 9 launch.☑️ This will be the 19th Falcon Heavy Block 5 launch.☑️ This will be the 9th Falcon 9 launch this year.☑️ This will be the 11th SpaceX launch this year.☑️ This will be the 4th journey to space of the Block 5 core B1048 .Vehicles usedTypeNameLocationFirst StageFalcon Heavy v1.2 - Block 5 (Full Thrust) - B1055SLC-40Second stage | Falcon Heavy v1.2 Block 5 (Full Thrust) | SLC-40 ASDS | Of Course I Still Love You (OCISLY) | Atlantic Ocean Barge tug | Hawk| Atlantic Ocean Support ship | GO Quest (Core recovery) | Atlantic Ocean Support ship | GO Ms. Tree (Fairing recovery) | Atlantic Ocean Support ship | GO Ms. Chief (Fairing recovery) | Atlantic Ocean<em>Core data source: Core wiki by r/SpaceX</em><em>Ship data source: SpaceXFleet by u/Gavalar_</em>Live updates<a href="/#%20MC%20//%20section%20events">TimelineTimeUpdate<a href="/#%20MC%20//%20row%200"> T-2 dayStarlink-1 launch live updates and discussion thread went live.<a href="/#%20MC%20//%20row%201"> T-7 daysStatic fire has been completed<a href="/#%20MC%20//%20section%20viewing">Mission's state✅ Currently GO for the launch attempt.Launch site, DownrangePlaceLocationCoordinates 🌐Time zone ⌚Launch siteCCAFS, Florida28.562° N, 80.5772° WUTC-5 (EST)Landing siteAtlantic Ocean (Downrange)32°32' N, 75°55' WUTC-5 (EST)Payload's destinationBurnOrbit typeApogee ⬆️Perigee ⬇️Inclination 📐Orbital period 🔄1. or 1. + 2.Low Earth Orbit (LEO) 🌍~280 km~280 km~53°no dataWeather - Merritt Island, FloridaStarlink TLE (Prediction)by <a href="/u/TheVehicleDestroyer">u/TheVehicleDestroyerSTARLINK MISSION 21 00000U 19001A 19315.64775462 -.00000000 00000-0 -00000-0 0 172 00000 51.1348 168.5259…
Twitter
SpaceX
Static fire test of Falcon 9 complete—targeting 11/11 for launch of 60 Starlink satellites from Pad 40 in Florida
Starlink 1 Press Kit
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Submitted November 10, 2019 at 04:11PM by Straumli_Blight
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https://ift.tt/34RxpCZ
Submitted November 10, 2019 at 04:11PM by Straumli_Blight
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Team is go for launch of 60 Starlink sats tomorrow—heaviest payload to date, first re-flight of a fairing, and first Falcon 9 to fly a fourth mission. Watching 1 sat that may not orbit raise; if not, 100% of its components will quickly burn up in Earth’s atmosphere
https://twitter.com/spacex/status/1193687615528042496?s=21
Submitted November 11, 2019 at 01:33AM by Playdohpants
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https://twitter.com/spacex/status/1193687615528042496?s=21
Submitted November 11, 2019 at 01:33AM by Playdohpants
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Twitter
SpaceX
Team is go for launch of 60 Starlink sats tomorrow—heaviest payload to date, first re-flight of a fairing, and first Falcon 9 to fly a fourth mission. Watching 1 sat that may not orbit raise; if not, 100% of its components will quickly burn up in Earth’s…
Falcon 9 and Starlink are vertical on Pad 40 ahead of tomorrow’s launch opportunity at 9:56 a.m. EST. Weather is 80% favorable.
https://twitter.com/SpaceX/status/1193679129184362496
Submitted November 11, 2019 at 12:59AM by 675longtail
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https://twitter.com/SpaceX/status/1193679129184362496
Submitted November 11, 2019 at 12:59AM by 675longtail
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Twitter
SpaceX
Falcon 9 and Starlink are vertical on Pad 40 ahead of tomorrow’s launch opportunity at 9:56 a.m. EST, 14:56 UTC. Weather is 80% favorable → https://t.co/gtC39uBC7z
r/SpaceX Starlink 1 Media Thread [Videos, Images, GIFs, Articles go here!]
It's that time again, as per usual, we like to keep things as tight as possible, so if you have content you created to share, whether that be images of the launch, videos, GIF's, etc, they go here.As usual, our standard media thread rules apply:All top level comments must consist of an image, video, GIF, tweet or article.If you're an amateur photographer, submit your content here. Professional photographers with subreddit accreditation can continue to submit to the front page, we also make exceptions for outstanding amateur content!Those in the aerospace industry (with subreddit accreditation) can likewise continue to post content on the front page.Mainstream media articles should be submitted here. Quality articles from dedicated spaceflight outlets may be submitted to the front page.Direct all questions to the live launch thread.
Submitted November 11, 2019 at 01:47PM by Ambiwlans
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It's that time again, as per usual, we like to keep things as tight as possible, so if you have content you created to share, whether that be images of the launch, videos, GIF's, etc, they go here.As usual, our standard media thread rules apply:All top level comments must consist of an image, video, GIF, tweet or article.If you're an amateur photographer, submit your content here. Professional photographers with subreddit accreditation can continue to submit to the front page, we also make exceptions for outstanding amateur content!Those in the aerospace industry (with subreddit accreditation) can likewise continue to post content on the front page.Mainstream media articles should be submitted here. Quality articles from dedicated spaceflight outlets may be submitted to the front page.Direct all questions to the live launch thread.
Submitted November 11, 2019 at 01:47PM by Ambiwlans
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reddit
r/SpaceX Starlink 1 Media Thread [Videos, Images, GIFs, Articles...
It's that time again, as per usual, we like to keep things as tight as possible, so if you have content you created to share, whether that be...
SpaceX on Twitter: Successful deployment of 60 Starlink satellites confirmed!
https://twitter.com/SpaceX/status/1193921194707128320
Submitted November 11, 2019 at 05:19PM by hitura-nobad
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https://twitter.com/SpaceX/status/1193921194707128320
Submitted November 11, 2019 at 05:19PM by hitura-nobad
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Twitter
SpaceX
Successful deployment of 60 Starlink satellites confirmed! https://t.co/bpBqO9oYR3
SpaceX launch from 50 miles away in Downtown Orlando (IG: @stevenmadow)
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Submitted November 11, 2019 at 05:52PM by stevenmadow
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Submitted November 11, 2019 at 05:52PM by stevenmadow
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Today's Falcon 9 launch from Oviedo, FL
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Submitted November 11, 2019 at 10:19PM by Ryan6163
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https://ift.tt/2X8Kc1g
Submitted November 11, 2019 at 10:19PM by Ryan6163
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Falcon 9 delivers 60 Starlink satellites to orbit
https://twitter.com/SpaceX/status/1194026177901596672
Submitted November 12, 2019 at 02:05AM by vinodjetley
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https://twitter.com/SpaceX/status/1194026177901596672
Submitted November 12, 2019 at 02:05AM by vinodjetley
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Twitter
SpaceX
Falcon 9 delivers 60 Starlink satellites to orbit
Full gallery of photo and video I captured at the Falcon 9 / Starlink-1 mission
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Submitted November 12, 2019 at 01:59PM by johnkphotos
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Submitted November 12, 2019 at 01:59PM by johnkphotos
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Johnkrausphotos
Falcon 9: Starlink 1 - John Kraus Photos
Spaceflight photographer capturing Earth's out-of-this-world moments.
Photo-bombing a Falcon's Flame (Feel free to identify the bird for me)
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Submitted November 12, 2019 at 03:34PM by Space_Coast_Steve
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Submitted November 12, 2019 at 03:34PM by Space_Coast_Steve
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One of my favorite Starlink photos from our remote cameras
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Submitted November 12, 2019 at 05:35PM by learntimelapse
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Submitted November 12, 2019 at 05:35PM by learntimelapse
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Crew Dragon Static Fire now scheduled for Wednesday, November 13th
https://twitter.com/nextspaceflight/status/1194318382264455169
Submitted November 12, 2019 at 07:42PM by 675longtail
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https://twitter.com/nextspaceflight/status/1194318382264455169
Submitted November 12, 2019 at 07:42PM by 675longtail
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Twitter
Michael Baylor
A static fire of Crew Dragon's eight SuperDraco engines is now scheduled for tomorrow during daylight hours from SpaceX's test stand near Landing Zone 1 at Cape Canaveral. #SpaceX
SpaceX appears to have test-fired thrusters on its Crew Dragon capsule at Cape Canaveral.
https://twitter.com/SpaceflightNow/status/1194710233593065472?s=20
Submitted November 13, 2019 at 09:19PM by Aakarsh_K
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https://twitter.com/SpaceflightNow/status/1194710233593065472?s=20
Submitted November 13, 2019 at 09:19PM by Aakarsh_K
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Twitter
Spaceflight Now
SpaceX appears to have test-fired thrusters on its Crew Dragon capsule at Cape Canaveral, a major test that paves the way for a high-altitude launch abort test as soon as mid-December. EARLIER STORY: https://t.co/mJKujDVeNU
<b>Potential for Fueling Starship with Food Waste</b>
As a fan of SpaceX and a waste management professional, I was excited to hear about Starship being Methane fueled and became interested in estimating the potential of using Food Waste (FW) as a feedstock for an Anaerobic Digestion (AD) to produce the Methane (CH4) needed to launch Superheavy + Starship to orbit and beyond. The benefit of using FW as a fuel source may lower the cost per launch to SpaceX while providing a direct environmental benefit by reducing the global warming potential of the FW by diverting it from landfill (where the methane mostly escapes and traps heat in the atmosphere) to an AD feedstock for CH4 rocket fuel production.As I'm located in California and am most familiar with the regulatory situation here, as well as having access to good numbers for waste generation and composition here, I will use the City of Los Angeles as an example. Although I realize there are no current plans to launch Starship from Vandenburg, I think it's an interesting mental exercise and helps exemplify the sheer quantity of food waste and it's gas potential from a large city.<em>In short, there is enough FW generated in LA alone that is legally mandated to be diverted from landfill, but has no planned destination or processing capacity on the horizion, to power 65 Superheavy + Starship launches per year. That's one max propellant launch worth of CH4 every 5.6 days.</em>​WHY FOOD WASTE?Legal requirements for State to divert from landfillsReducing the amount of organic material sent to landfills is part of the AB 32 (California Global Warming Solutions Act of 2006) Scoping Plan, is fundamental to ARB’s Short Lived Climate Pollutant strategy and is one of California’s strategies for reaching the statewide 75 percent recycling goal. Collecting and processing organic materials, particularly food, is also the focus of AB 1826, which mandates such efforts beginning April 1, 2016. <a href="https://www.calrecycle.ca.gov/Organics/">https://www.calrecycle.ca.gov/Organics/</a>The waste sector aspects of SB 1383 ultimately require California to reduce the disposal of organic waste by 75 percent, and to recover 20 percent of edible food currently disposed, by 2025. The organics disposal reduction targets will require a significant expansion of recycling infrastructure and capacity.CalRecycle’s perspective is that this will require more coordinated, regional infrastructure planning than has occurred to date.LOS ANGELES<a href="https://dpw.lacounty.gov/epd/swims/ShowDoc.aspx?id=8691&hp=yes&type=PDF">Countywide Organic Waste Management Plan March 2018</a>Scenario analyses conducted shows that the County will not have enough organic waste recycling capacity. Only a small portion of the in-County organic waste processing facilities are authorized to accept food waste. This represents only 30,576 TPY available capacity to process 1.6 million TPY of Food Waste. Based on information provided by facility operators in surveys, there is only 98 tons per day (TPD) of current food waste recycling capacity within the County and 5,128 TPD of estimated food waste disposed in the County during the 2014 base year. In-County current FW recycling infrastructure is shown to be significantly more inadequate for meeting FW recycling demand during the planning period.Over 5000 TPD of available food waste in LA county currently - 1.6m TPY Food Waste, half unplanned for, available = 840,445 TPY (~2600TPD) over next 15 year period.Current tipping fees for greenwaste around LA are $39/ton. At 840,455 TPY, one could estimate a minimum of $32.7m in annual revenue from tipping fees for accepting this material.METHANE POTENTIAL OF FOOD WASTEFood Waste has high biogas production potential when compared to other feedstocks. This same gas potential is Global Warming Potential when material is landfilled.2600 TPD of food waste is roughly equivalent to 6500 ft3/min of methane (or 3,350,000 MMBtu/yr of energy). If processed…
As a fan of SpaceX and a waste management professional, I was excited to hear about Starship being Methane fueled and became interested in estimating the potential of using Food Waste (FW) as a feedstock for an Anaerobic Digestion (AD) to produce the Methane (CH4) needed to launch Superheavy + Starship to orbit and beyond. The benefit of using FW as a fuel source may lower the cost per launch to SpaceX while providing a direct environmental benefit by reducing the global warming potential of the FW by diverting it from landfill (where the methane mostly escapes and traps heat in the atmosphere) to an AD feedstock for CH4 rocket fuel production.As I'm located in California and am most familiar with the regulatory situation here, as well as having access to good numbers for waste generation and composition here, I will use the City of Los Angeles as an example. Although I realize there are no current plans to launch Starship from Vandenburg, I think it's an interesting mental exercise and helps exemplify the sheer quantity of food waste and it's gas potential from a large city.<em>In short, there is enough FW generated in LA alone that is legally mandated to be diverted from landfill, but has no planned destination or processing capacity on the horizion, to power 65 Superheavy + Starship launches per year. That's one max propellant launch worth of CH4 every 5.6 days.</em>​WHY FOOD WASTE?Legal requirements for State to divert from landfillsReducing the amount of organic material sent to landfills is part of the AB 32 (California Global Warming Solutions Act of 2006) Scoping Plan, is fundamental to ARB’s Short Lived Climate Pollutant strategy and is one of California’s strategies for reaching the statewide 75 percent recycling goal. Collecting and processing organic materials, particularly food, is also the focus of AB 1826, which mandates such efforts beginning April 1, 2016. <a href="https://www.calrecycle.ca.gov/Organics/">https://www.calrecycle.ca.gov/Organics/</a>The waste sector aspects of SB 1383 ultimately require California to reduce the disposal of organic waste by 75 percent, and to recover 20 percent of edible food currently disposed, by 2025. The organics disposal reduction targets will require a significant expansion of recycling infrastructure and capacity.CalRecycle’s perspective is that this will require more coordinated, regional infrastructure planning than has occurred to date.LOS ANGELES<a href="https://dpw.lacounty.gov/epd/swims/ShowDoc.aspx?id=8691&hp=yes&type=PDF">Countywide Organic Waste Management Plan March 2018</a>Scenario analyses conducted shows that the County will not have enough organic waste recycling capacity. Only a small portion of the in-County organic waste processing facilities are authorized to accept food waste. This represents only 30,576 TPY available capacity to process 1.6 million TPY of Food Waste. Based on information provided by facility operators in surveys, there is only 98 tons per day (TPD) of current food waste recycling capacity within the County and 5,128 TPD of estimated food waste disposed in the County during the 2014 base year. In-County current FW recycling infrastructure is shown to be significantly more inadequate for meeting FW recycling demand during the planning period.Over 5000 TPD of available food waste in LA county currently - 1.6m TPY Food Waste, half unplanned for, available = 840,445 TPY (~2600TPD) over next 15 year period.Current tipping fees for greenwaste around LA are $39/ton. At 840,455 TPY, one could estimate a minimum of $32.7m in annual revenue from tipping fees for accepting this material.METHANE POTENTIAL OF FOOD WASTEFood Waste has high biogas production potential when compared to other feedstocks. This same gas potential is Global Warming Potential when material is landfilled.2600 TPD of food waste is roughly equivalent to 6500 ft3/min of methane (or 3,350,000 MMBtu/yr of energy). If processed…
www.calrecycle.ca.gov
Organic Materials Management
Full duration static fire test of Crew Dragon’s launch escape system complete – SpaceX and NASA teams are now reviewing test data and working toward an in-flight demonstration of Crew Dragon’s launch escape capabilities
https://twitter.com/SpaceX/status/1194745251480498177
Submitted November 13, 2019 at 11:35PM by soldato_fantasma
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https://twitter.com/SpaceX/status/1194745251480498177
Submitted November 13, 2019 at 11:35PM by soldato_fantasma
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Twitter
SpaceX
Full duration static fire test of Crew Dragon’s launch escape system complete – SpaceX and NASA teams are now reviewing test data and working toward an in-flight demonstration of Crew Dragon’s launch escape capabilities
👍1
<b>Starship Structures - CSLM v0.3</b>
As always, a quick introduction before we get started. If you're new here or missed my previous posts, I'm a grad student studying Starship from a structural perspective. I have a relatively short background in this field, but enough to dive deeper. This project creates a "Loads Model" which is a very coarse model of an entire aircraft, used to determine the load distribution for detailed sizing in later phases of design. For more background info, see my previous posts linked at the bottom.(Also, I don't know the best way to embed pictures. My intent was to have them expandable with RES. Sometimes that seems to work, sometimes it doesn't...)​IntroductionWell it's taken longer than I would have liked, but I'm proud to say that I've completed most updates to the Community Starship Loads Model, and the it generally matches with everything we've seen in presentations and prototypes. First and foremost, some basic stats from this release:​AttributeValue (units vary)<strong>Dry Mass</strong>110t<strong>Length</strong>50m<strong>Diameter</strong>9m<strong>Number of Engines</strong>6 (3SL x 3Vac)<strong>Longitudinal CG</strong>33m<strong>Configuration</strong>Launch (All fins/flaps flat)<strong>Materials</strong>Isotropic 301 Stainless SteelOrthotropic 301 Stainless Steel Stiffened Panel (50%)<strong>Solve Time</strong>12.8s<strong>Loadcases</strong>100, "Launch Config, Full Prop, On Stack, No Crosswind"<strong>Results Quality</strong>Better than last time! Possibly Still questionable. Deformations look reasonable.<strong>Time Invested</strong>~60-80hrs (rough guess, I unfortunately didn't record any time tracking)MeshSo my last update was just prior to the big <a href="https://www.humanmars.net/2019/09/slides-from-spacex-starship-2019-update.html">Boca Chica Presentation</a>. Obviously there were a lot of changes to make! Let's take a look at the overall mesh for this release.<a href="https://imgur.com/BMPFOyx">Fig 1. FEM Top View</a>As you can see, we match the general profile and dimensions of the updated design. I've added internal structure for the tank domes, cargo bulkhead, thrust plate, and header tank (only 1 dome right now, perhaps the second one later). The header domes are something we haven't seen in the prototypes, but Elon mentioned moving it on twitter and in making it integral in Tim Dodd's interview (great job, Tim!). Also in Fig 1 you can see where the lateral CG falls (magenta line). The yellow lines represent beam elements (more on that later).Canards and fins have basic spars to close out the sides and split the planform (I think that's the word for it...?). They need more work to get some detail, but honestly it may not even be necessary now that landing loads go directly into the airframe.Speaking of which, I have no modeling of landing legs or attachments, but dat airframe doh...<a href="https://imgur.com/tkAHFg6">Fig 2. FEM Cross-Section View</a>In this shaded view you can see the internal structure again. If you look at the back, you can see a couple orange triangles. These are "lumped mass" elements representing the engines. Engines are layed out matching the 2019 Presentation slides (see link above). My Engine estimates are:​TypeMassX CG offsetSea Level (SL)2050kg0.5mVacuum (SL)2250kg0.625m​If you look closely, you can also see some struts I've created. These just help transfer that engine load more directly into the airframe. These are also beam elements, so mathematically they have a 2d cross-section, but model-wise they're just a line. This is advantageous because it allows more efficient computation with little loss of accuracy. I've used beam elements with varying cross-sections in places like the thrust bay and structural rings for the tanks. We can plot the cross-sections, <a href="https://imgur.com/p8qJULp">Fig 3. Methane Tank Rings</a>.​Let's take a closer look a the interstage and thrust structure. The dome is the Lower LOX dome.…
As always, a quick introduction before we get started. If you're new here or missed my previous posts, I'm a grad student studying Starship from a structural perspective. I have a relatively short background in this field, but enough to dive deeper. This project creates a "Loads Model" which is a very coarse model of an entire aircraft, used to determine the load distribution for detailed sizing in later phases of design. For more background info, see my previous posts linked at the bottom.(Also, I don't know the best way to embed pictures. My intent was to have them expandable with RES. Sometimes that seems to work, sometimes it doesn't...)​IntroductionWell it's taken longer than I would have liked, but I'm proud to say that I've completed most updates to the Community Starship Loads Model, and the it generally matches with everything we've seen in presentations and prototypes. First and foremost, some basic stats from this release:​AttributeValue (units vary)<strong>Dry Mass</strong>110t<strong>Length</strong>50m<strong>Diameter</strong>9m<strong>Number of Engines</strong>6 (3SL x 3Vac)<strong>Longitudinal CG</strong>33m<strong>Configuration</strong>Launch (All fins/flaps flat)<strong>Materials</strong>Isotropic 301 Stainless SteelOrthotropic 301 Stainless Steel Stiffened Panel (50%)<strong>Solve Time</strong>12.8s<strong>Loadcases</strong>100, "Launch Config, Full Prop, On Stack, No Crosswind"<strong>Results Quality</strong>Better than last time! Possibly Still questionable. Deformations look reasonable.<strong>Time Invested</strong>~60-80hrs (rough guess, I unfortunately didn't record any time tracking)MeshSo my last update was just prior to the big <a href="https://www.humanmars.net/2019/09/slides-from-spacex-starship-2019-update.html">Boca Chica Presentation</a>. Obviously there were a lot of changes to make! Let's take a look at the overall mesh for this release.<a href="https://imgur.com/BMPFOyx">Fig 1. FEM Top View</a>As you can see, we match the general profile and dimensions of the updated design. I've added internal structure for the tank domes, cargo bulkhead, thrust plate, and header tank (only 1 dome right now, perhaps the second one later). The header domes are something we haven't seen in the prototypes, but Elon mentioned moving it on twitter and in making it integral in Tim Dodd's interview (great job, Tim!). Also in Fig 1 you can see where the lateral CG falls (magenta line). The yellow lines represent beam elements (more on that later).Canards and fins have basic spars to close out the sides and split the planform (I think that's the word for it...?). They need more work to get some detail, but honestly it may not even be necessary now that landing loads go directly into the airframe.Speaking of which, I have no modeling of landing legs or attachments, but dat airframe doh...<a href="https://imgur.com/tkAHFg6">Fig 2. FEM Cross-Section View</a>In this shaded view you can see the internal structure again. If you look at the back, you can see a couple orange triangles. These are "lumped mass" elements representing the engines. Engines are layed out matching the 2019 Presentation slides (see link above). My Engine estimates are:​TypeMassX CG offsetSea Level (SL)2050kg0.5mVacuum (SL)2250kg0.625m​If you look closely, you can also see some struts I've created. These just help transfer that engine load more directly into the airframe. These are also beam elements, so mathematically they have a 2d cross-section, but model-wise they're just a line. This is advantageous because it allows more efficient computation with little loss of accuracy. I've used beam elements with varying cross-sections in places like the thrust bay and structural rings for the tanks. We can plot the cross-sections, <a href="https://imgur.com/p8qJULp">Fig 3. Methane Tank Rings</a>.​Let's take a closer look a the interstage and thrust structure. The dome is the Lower LOX dome.…
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Slides from SpaceX Starship 2019 update presentation by Elon Musk
Today SpaceX CEO and lead designer Elon Musk provided an update of SpaceX's Starship design. Here are slides and animations from his presentation.
As SpaceX Launches 60 Starlink Satellites, Scientists See Threat to ‘Astronomy Itself’
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Submitted November 14, 2019 at 05:35AM by topson322
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NY Times
As SpaceX Launches 60 Starlink Satellites, Scientists See Threat to ‘Astronomy Itself’
Various companies are pressing ahead with plans for internet service from space, which has prompted astronomers to voice concerns about the impact on research from telescopes on Earth.
How to spot the SpaceX Starlink satellite train overhead this week
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Submitted November 14, 2019 at 06:45AM by rettuhS
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Ars Technica
How to spot the SpaceX Starlink satellite train overhead this week
Ars’ resident rocket photographer shares three tools to track Starlink satellites above.
OIG report on NASA's Management of Crew Transportation to the International Space Station
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Submitted November 14, 2019 at 08:21PM by ethan829
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