SpaceX Starship Flight 13 News and Updates

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**SPEAKER_4** (1:26)
SpaceX is launching the 13th flight of Starship, sending up the V3 vehicles with 20 next-generation Starlink satellites that are designed to completely burn up in the atmosphere shortly after deployment.

**SPEAKER_5** (1:38)
The deliberate destruction of that hardware is an engineering paradox. You have highly advanced communication hardware, satellites equipped with laser interconnects and complex deployment mechanisms, and the entire flight plan dictates intentionally dropping them back into the atmosphere for incineration after just a brief window of operation.

**SPEAKER_4** (1:59)
Right, because when you think about spending millions on advanced satellites, you assume the goal is to keep them in orbit for a decade. So how does a company justify the expense of building and launching 20 advanced satellites just to gather a few moments of data before they turn to ash?

**SPEAKER_5** (2:14)
Well, to answer that, you have to look at the overall flight profile. This follows the previous flight, which debuted the Starship and Super Heavy V3 vehicles, and this mission continues testing that specific architecture.
The plan is launch, stage separation, the booster returning to the Gulf of America, and the upper stage flying a suborbital trajectory toward the Indian Ocean.

**SPEAKER_4** (2:35)
That booster return is where things immediately get complicated. The booster's primary objectives are getting through launch, ascent, stage separation, the boost back burn, and the landing burn. On the previous flight, they had specific issues. At stage separation, slight differences in engine startup timing caused the booster to flip off axis by approximately 90 degrees.

**SPEAKER_5** (2:55)
I kind of have to push back on the mechanics of that. I mean, how does a minor timing discrepancy in starting up engines cause a rocket the size of a skyscraper to violently rotate sideways?

**SPEAKER_4** (3:05)
It comes down to thrust vectoring and the extreme sensitivity of the hot staging process.
Hot staging is when the upper stage engines ignite while the vehicles are still attached. So, the booster engines shut down, or mostly shut down, and the upper stage lights up. You are basically lighting a firecracker inside a tin can while holding it.

**SPEAKER_5** (3:26)
Right. The forces there are immense.

**SPEAKER_4** (3:28)
Exactly. If the startup timing of the engines on the upper stage isn't perfectly symmetrical, the thrust doesn't just push the vehicle forward, it pushes it sideways. So, the startup sequence has been modified to handle that timing variability more robustly.
The goal is to ensure the vehicle reliably flips in the desired direction, which gets the booster pointed back toward the launch site faster.

**SPEAKER_5** (3:50)
Which really highlights the reality of multi-engine rockets.
The margins of error are practically non-existent. If you have 33 engines on the bottom of a booster, the software coordinating the ignition has to be flawless. If it isn't, the unbalanced thrust acts like a giant lever against the vehicle.

**SPEAKER_4** (4:06)
Yeah. The further off-center the thrust is, the more torque you apply to the entire structure. And surviving that off-axis flip was only half the problem. The booster then had to fire engines to head back home.
During the boost back burn on the last flight, five of the 33 engines experienced issues and failed to relight. That ended the burn prematurely.

**SPEAKER_5** (4:28)
Five engines failing sounds catastrophic on paper. It does, yeah. Yet the vehicle survived the maneuver. The resilience of the system relies entirely on redundancy.