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Originally Posted By Cobalt135: https://i.imgur.com/3sCJI9V.jpeg |
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I assume this method helps keep the logistics simpler. No separate process to re-pressurize a COPV, either its accompanying complications and mission risks. A COPV is what caused at least one high profile pad blowup for Falcon, IIRC. At least, that’s what I theorize. They’re smart people. I presume they’ve done the math and determined figuring out this issue in this way gets them further, faster, than retaining all the necessary plumbing and logistics for the other. *my* point is more that you can’t look at or evaluate Starship as individual launches of an isolated vehicle going to space. You have to evaluate it as an entire system, which includes the ground equipment. … of course, each launch feeds data back in to that equation. So… |
Falcon 9 stuff, but they just flew fairing half SN155 for the 40th time this past launch.
 Also, gotta love Gwen. She takes a shot every now and then. Everyone following remembers her reply to Tory Bruno about the "incomplete" Raptor 3 picture a while ago. Now that the Falcon 9 launches will start winding down she was questioned about it at an even last week.  Gwynne Shotwell Roasts Boeing’s Starliner | “We’re Just Gonna Let Them Have Some Business |
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Has there been any articles or videos on the fairing recovery operation? I recall them talking about the first recovery experiments, but now *poof* they're flying 40 times? ETA: I can read occasionally. from that tweet comments grok: After separation, fairing halves use cold-gas thrusters for attitude control during atmospheric reentry. A drogue chute then deploys, followed by a steerable parafoil that slows and guides them to a soft ocean splashdown. Recovery ships like Bob or Doug locate the floating halves, use small boats and deck cranes to lift them aboard, and return them to port for cleaning and reuse. Some have now flown 40 times. |
I would like to remind everyone that disorganized violence is never the answer. - John Carter
Decadence is no longer morally acceptable.
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Originally Posted By Cobalt135: Falcon 9 stuff, but they just flew fairing half SN155 for the 40th time this past launch.
https://images.openai.com/static-rsc-4/RlKvfw0Paq0saudUM-1JVDGVoOlVvDORtdbPCtOlH8ff9oPey0Q1Mmcxu2o7TvK2XRt-HVVeZeiXbmJufynkEkgpSRxfTFIYqS_lD_6iPLqicsK2j0VYXOQ9q3xXNcokGPxWlzJCkyHPrlRHmYC9HuXWVf_BVO5rh0Adfq8WfDcgl8lWldWExCM0-RaGA-8l?purpose=fullsize Also, gotta love Gwen. She takes a shot every now and then. Everyone following remembers her reply to Tory Bruno about the "incomplete" Raptor 3 picture a while ago. Now that the Falcon 9 launches will start winding down she was questioned about it at an even last week.  https://www.youtube.com/watch?v=Bl5g7hxSwz8“Let them have some business.” Not needing to mention the fact that they had to rescue 2 astronauts from that… business. |
Exaggerate the essential, leave the obvious vague.
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Originally Posted By Hesperus: “Let them have some business.” Not needing to mention the fact that they had to rescue 2 astronauts from that… business. Originally Posted By Hesperus: Originally Posted By Cobalt135: Falcon 9 stuff, but they just flew fairing half SN155 for the 40th time this past launch.
https://images.openai.com/static-rsc-4/RlKvfw0Paq0saudUM-1JVDGVoOlVvDORtdbPCtOlH8ff9oPey0Q1Mmcxu2o7TvK2XRt-HVVeZeiXbmJufynkEkgpSRxfTFIYqS_lD_6iPLqicsK2j0VYXOQ9q3xXNcokGPxWlzJCkyHPrlRHmYC9HuXWVf_BVO5rh0Adfq8WfDcgl8lWldWExCM0-RaGA-8l?purpose=fullsize Also, gotta love Gwen. She takes a shot every now and then. Everyone following remembers her reply to Tory Bruno about the "incomplete" Raptor 3 picture a while ago. Now that the Falcon 9 launches will start winding down she was questioned about it at an even last week. https://www.youtube.com/watch?v=Bl5g7hxSwz8“Let them have some business.” Not needing to mention the fact that they had to rescue 2 astronauts from that… business. "I sense some spiciness in that response"  |
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Originally Posted By Cobalt135: New, video 3
https://www.youtube.com/watch?v=EthkNLasUa8 |
For a people who are free, and who mean to remain so, a well-organized and armed militia is their best security.
Thomas Jefferson
"He didnt punch anybody. He punched an idea." DrFrige
Thomas Jefferson
"He didnt punch anybody. He punched an idea." DrFrige
Temu Raptor, I'm sure it'll burn engine rich
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Originally Posted By Cobradriver: "I sense some spiciness in that response" Originally Posted By Cobradriver: Originally Posted By Hesperus: Originally Posted By Cobalt135: Falcon 9 stuff, but they just flew fairing half SN155 for the 40th time this past launch.
https://images.openai.com/static-rsc-4/RlKvfw0Paq0saudUM-1JVDGVoOlVvDORtdbPCtOlH8ff9oPey0Q1Mmcxu2o7TvK2XRt-HVVeZeiXbmJufynkEkgpSRxfTFIYqS_lD_6iPLqicsK2j0VYXOQ9q3xXNcokGPxWlzJCkyHPrlRHmYC9HuXWVf_BVO5rh0Adfq8WfDcgl8lWldWExCM0-RaGA-8l?purpose=fullsize Also, gotta love Gwen. She takes a shot every now and then. Everyone following remembers her reply to Tory Bruno about the "incomplete" Raptor 3 picture a while ago. Now that the Falcon 9 launches will start winding down she was questioned about it at an even last week. https://www.youtube.com/watch?v=Bl5g7hxSwz8"Let them have some business." Not needing to mention the fact that they had to rescue 2 astronauts from that business. "I sense some spiciness in that response" It splashed down 2 years ago from that mission with much commentary "see, it splashed down just fine." Yet 9 months ago its first actual mission, (Starliner 1) was changed to an uncrewed resupply mission to ISS instead, allowing in-flight validation of the system upgrades implemented on Stayliner where they felt a crew mission would not be appropriate. It was scheduled for this last quarter of 2026.... unlikely, with no real date for its return to flight. |
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Originally Posted By DarkGray: Temu Raptor, I'm sure it'll burn engine rich
https://www.ar15.com/media/mediaFiles/78606/27352_jpg-3830440.JPG https://www.ar15.com/media/mediaFiles/78606/27351_jpg-3830441.JPG That bright green flame color looks so good...... 🤣😎 Note: The green flame leaving a Methalox engine means it is engine-rich combustion, which means the engine melting and destroying itself. |
 Salvaging Starship 40: What SpaceX's New Footage Reveals |
 
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Originally Posted By Cobalt135: The primary issue with the booster is ice clogging the LOX feedlines to the engines during boostback and landing burns causing engines failing to light due to supply issues. This is due to tapping off some of the hot gasses from the Raptor combustion to maintain positive pressurization within the propellant tank. They chose this route to reduce weight of carrying COPV tanks to keep positive pressure on the propellant tank as it is depleted during the launch. If B-21 overcomes the internal LOX tank icing issues and clogging of the feed lines caused by the high temp autogenous gas pressurization of the tank by the Raptor combustion byproducts, CO2 and H2O, reacting to the the -290 degree LOX supply, then it can move on to catch attempt possibilities in the future. The main corrective action has been to install strainers in the LOX tank to keep that ice formation from blocking the propellant flow the engines need to perform successful boostback and landing burns. Until they can be confident that they have that issue under control there is no expectation that the booster will return for a catch. On this launch, the ship will demonstrate the ability to remain in an actual orbit for an extended time period (nearly 10 hours vs under 2 hours so far) and can still perform a successful deorbit burn and splash down where they intended. (off the coast of Chile) That should give the FAA the confidence to allow catch attempts of ships back at Starbase. I'd like a source for this explanation. I don't believe for a second they are routing turbo pump gas generator exhaust back to the LOX tank. |
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Originally Posted By RiverSwine45: I'd like a source for this explanation. I don't believe for a second they are routing turbo pump gas generator exhaust back to the LOX tank.  First Look Inside SpaceX's Starfactory w/ Elon Musk Around 27:55 Musk describes exhaust gas coming off lox pre-burner used for pressurization and the ice problems it creates. |
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Originally Posted By Cobalt135: It splashed down 2 years ago from that mission with much commentary "see, it splashed down just fine." Yet 9 months ago its first actual mission, (Starliner 1) was changed to an uncrewed resupply mission to ISS instead, allowing in-flight validation of the system upgrades implemented on Stayliner where they felt a crew mission would not be appropriate. It was scheduled for this last quarter of 2026.... unlikely, with no real date for its return to flight. Stayliner. If it's a typo, it's a good one. |
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Originally Posted By DarkGray: https://www.youtube.com/watch?v=aFqjoCbZ4ikAround 27:55 Musk describes exhaust gas coming off lox pre-burner used for pressurization and the ice problems it creates. Originally Posted By DarkGray: Originally Posted By RiverSwine45: I'd like a source for this explanation. I don't believe for a second they are routing turbo pump gas generator exhaust back to the LOX tank. https://www.youtube.com/watch?v=aFqjoCbZ4ikAround 27:55 Musk describes exhaust gas coming off lox pre-burner used for pressurization and the ice problems it creates. Thanks. He's hard to follow but he confirmed the interviewers guess at the preburner is the source for boosting ullage pressure. Hard to believe they are creating liquid air in the tank on purpose. |
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Originally Posted By voyager3: Stayliner. If it's a typo, it's a good one. Originally Posted By voyager3: Originally Posted By Cobalt135: It splashed down 2 years ago from that mission with much commentary "see, it splashed down just fine." Yet 9 months ago its first actual mission, (Starliner 1) was changed to an uncrewed resupply mission to ISS instead, allowing in-flight validation of the system upgrades implemented on Stayliner where they felt a crew mission would not be appropriate. It was scheduled for this last quarter of 2026.... unlikely, with no real date for its return to flight. Stayliner. If it's a typo, it's a good one. sounds like a woman's sanitary product |
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