https://twitter.com/csi_starbase/status/1589099001575804928QuoteStabilizer pins have been added onto the brand new booster transport stand. As far as we know, B9 and up will not use this same mechanism. So this transport stand is likely being prepared for B7 to be taken back off of the OLM soon. B7's transport stand was donated to B9📸:S0Z
Stabilizer pins have been added onto the brand new booster transport stand. As far as we know, B9 and up will not use this same mechanism. So this transport stand is likely being prepared for B7 to be taken back off of the OLM soon. B7's transport stand was donated to B9📸:S0Z
I have looked for this question/answer but I can't seem to find it.Can SH fire all 33 engines without a full load of propellant or some added weight during a static fire? That's a lot of up thrust on the clamps with a relatively light stage if not. Just curious.
For a full 33 engine static fire I think Starship will need to be on top and loaded with at least nitrogen close to capacity.
Why is everyone assuming that they have to run all the engines at 100% throttle to prove they work?Don't Raptor 2s throttle all the way down to 40%? I don't know if thrust/throttle is linear, but a back of napkin assumption is the 7500t thrust at 100% would be around 3000t thrust at 40% which wouldn't require any hold down at all.I think I remember something about the outer 20 not throttling, I know they don't gimbal, but I can't find it.
Quote from: ulm_atms on 11/29/2022 03:58 pmI have looked for this question/answer but I can't seem to find it.Can SH fire all 33 engines without a full load of propellant or some added weight during a static fire? That's a lot of up thrust on the clamps with a relatively light stage if not. Just curious.I think insider on reddit says it doesn't need Starship on top to do the 33 engines static fire, probably needs a full load of lox at least. Also there's an animation somewhere showing temporary struts can be added to each hold down clamp to strengthen them so that they can take more force during static fire, so it's likely SpaceX has thought about this and designed accordingly.
Who says you have to static fire all the engines at once? If they do half and then the other half, if everything looks good then launch.
Quote from: Grandpa to Two on 11/30/2022 07:45 pmWho says you have to static fire all the engines at once? If they do half and then the other half, if everything looks good then launch.Static fires are for testing the system, not the individual engines or even the individual propellant flow paths. In the abstract some full-system anomalies may not show up in partial-system tests.
Quote from: DanClemmensen on 11/30/2022 09:22 pmQuote from: Grandpa to Two on 11/30/2022 07:45 pmWho says you have to static fire all the engines at once? If they do half and then the other half, if everything looks good then launch.Static fires are for testing the system, not the individual engines or even the individual propellant flow paths. In the abstract some full-system anomalies may not show up in partial-system tests.You make it sound like a binary thing: test everything together, or not. I don't think it is as simple as that.As a trivial example, they presumably won't test all the engines at the same time as testing the hold-down clamp release mechanisms, because that would result in an actual launch. They will test the things that can they can practically test, and take a risk on the rest.The best test would be all 33 engines to 100% thrust, with a Starship stacked on top of the booster. And if that test is looking good, why not just release the hold-down clamps and let it go to orbit?
The best test would be all 33 engines to 100% thrust, with a Starship stacked on top of the booster. And if that test is looking good, why not just release the hold-down clamps and let it go to orbit?
Hey #StarshipAddicts, I hope yal are ready for Part 2!If you are wondering what the REAL reason is behind the most significant delay to the 1st Starship Orbital Test Flight, then you don't want to miss this!Premier starts at 7:30pm (CST) 🔗:
Warning: This episode contains an extreme level of speculation. Nearly 100%If anything I've covered here is proven to be incorrect, I will address it in a follow up investigation. This is an important topic to get right. These conclusions should NOT be considered as fact.
Why would anyone watch something that is advertised as almost 100% speculation?