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Starship Flight 7

(www.spacex.com)
649 points chinathrow | 9 comments | 16 Jan 25 21:25 UTC | HN request time: 0.211s | source | bottom
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victorbojica ◴[16 Jan 25 22:55 UTC] No.42731957[source]▶
What happens if the ship has exploded? Is there any kind of danger?
replies(1): >>42731990 #
wongarsu ◴[16 Jan 25 22:58 UTC] No.42731990[source]▶
The flight paths are planned specifically so any potential debris has a high chance of landing in the ocean.

If it actually exploded (either on its own or because the flight-termination system kicked in) most of it should burn up on reentry though.

replies(1): >>42732010 #
1. victorbojica ◴[16 Jan 25 23:00 UTC] No.42732010[source]▶
What happens if it doesn't explode and they just lost control over it? I'm mostly curios of the risks at that altitude.
replies(5): >>42732050 #>>42732073 #>>42732107 #>>42732212 #>>42732252 #
2. marssaxman ◴[16 Jan 25 23:04 UTC] No.42732050[source]▶
The launch license requires them to build in a "flight termination system" which makes it explode if they lose control over it.
replies(1): >>42732859 #
3. Polizeiposaune ◴[16 Jan 25 23:07 UTC] No.42732073[source]▶
There's an autonomous flight termination system which triggers if it strays outside the planned flight corridor; any debris that survives reentry should then land in the advertised safety zone.
4. wongarsu ◴[16 Jan 25 23:10 UTC] No.42732107[source]▶
If it doesn't explode it might be light enough to survive reentry, after sailing on for a short while. In that case a large chunk of metal will come down either off the coast of South Africa or if continues on in its orbit potentially off the coast of Australia.

[1] has the planned flight path, as well as the impact zones.

1: https://flightclub.io/result/3d?llId=c5566f6e-606e-4250-b8f4...

5. inglor_cz ◴[16 Jan 25 23:20 UTC] No.42732212[source]▶
They have a bunch of explosives strapped on the rocket and can give a radio command to blow the ship up. It can even decide to explode itself if the readings go haywire.

It is called the Flight Termination System and it is very common on non-manned flights now.

replies(2): >>42732269 #>>42735274 #
6. walrus01 ◴[16 Jan 25 23:26 UTC] No.42732252[source]▶
the onboard control system and flight termination system are programmed to explode if it deviates from a specific and allowed path of trajectory/speed/functional engine thrust. The last thing anyone wants is a partially broken starship going into an uncontrolled suborbital velocity that lands on a city in Africa.
7. walrus01 ◴[16 Jan 25 23:28 UTC] No.42732269[source]▶
It could be noted that manually operated flight termination systems have been used even on manned spaceflight, each and every space shuttle flight had a termination system under human ground control.
8. ceejayoz ◴[17 Jan 25 00:55 UTC] No.42732859[source]▶
That system didn’t work on the first big test flight, when it went spinning end over end. Part of the reason there was an FAA investigation.
9. dr_kiszonka ◴[17 Jan 25 08:29 UTC] No.42735274[source]▶
If that system fails, can the rocket be shot down in time?