| General > General Technical Chat |
| Spacex Starship IFT-2 launch today |
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| wraper:
--- Quote from: AndyBeez on November 19, 2023, 01:17:08 pm ---On a side note, I recently heard the Nasa versus SpaceX dynamic being described as, "it's rocket scientists versus space cowboys." Yee har... --- End quote --- This year "space cowboys" put 4x more mass to the orbit (1000 tons) than the rest of the world combined. Also they are the only US launch provider that can currently deliver astronauts to ISS (for NASA you just mentioned). |
| wraper:
Not to say since 2017 they had about 245 successful launches in a row which is absolutely unmatched reliability, F9 B5 (introduced in 2018) and Falcon Heavy had zero launch failures. |
| Stray Electron:
--- Quote from: Psi on November 19, 2023, 10:19:14 am ---Speculation is that the relight of the booster engines happened without stable acceleration to keep the fuel from floating/sloshing around in the tanks and many engines inhaled air and exploded. Resulting in an inability to continue the booster return and water landing mission, which triggered FTS. --- End quote --- That shouldn't have been a problem. Ullage engines have been used for MANY years to provide a slight amount of acceleration so that the fuel and oxidizer are pushed to the bottom of the tanks so that they will be properly picked up for engine re-ignitions. |
| iMo:
Fantastic launch! All engines of the booster worked fine, the switching off sequence was impressive (look at the slowmo sequence).. A significant achievement, imho.. :clap: |
| tom66:
--- Quote from: Psi on November 19, 2023, 10:19:14 am ---Speculation is that the relight of the booster engines happened without stable acceleration to keep the fuel from floating/sloshing around in the tanks and many engines inhaled air and exploded. Resulting in an inability to continue the booster return and water landing mission, which triggered FTS. --- End quote --- I think this could be a factor. If you look at the stream on Twitter, you can see that the engine 'diagram' shows many engines failing before the RUD. Also, you can see debris coming off the top of the rocket. It's possible that a few engines failing next to each other damaged critical hydraulics or avionics and loss of control occurred leading to FTS. Not sure if FTS is done by Range Officer or is fully automated on SpaceX rockets. |
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