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A comment on “I worked at Boeing for about 1.5 years in the 2008-9 time period”. Parent comment

Re:“I worked at Boeing for about 1.5 years in the 2008-9 tim... by gdy on Tuesday April 16, 2019 @06:10AM (#19672381)
"SpaceX has ballistic missiles with a CEP significantly smaller than a drone ship"

It goes quite slowly compared to a real ICBM and relies on GPS that will be jammed in a real war.

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Re:“I worked at Boeing for about 1.5 years in the 2008-9 tim... by mariuolo on Tuesday April 16, 2019 @05:20PM (#19677438)
Also they run on kerosene. By the time they are fueled and prepped the other side will have taken out the facility.
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Re:“I worked at Boeing for about 1.5 years in the 2008-9 tim... by dfox on Tuesday April 16, 2019 @02:49PM (#19676209)
IIRC also the drone ship has active role in the guidance loop. ICBM targets usually don't do that.
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Re:“I worked at Boeing for about 1.5 years in the 2008-9 tim... by Rebelgecko on Tuesday April 16, 2019 @01:41PM (#19675647)
F9 has multiple IMUs. Won't be accurate enough to fly a cruise missile through someone's window, but if you're sending a big enough bomb it doesn't matter if you're a few hundred meters off.
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Re:“I worked at Boeing for about 1.5 years in the 2008-9 tim... by gdy on Wednesday April 17, 2019 @01:09PM (#19684391)
A single bomb is not as good as lots of MIRVs
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Re:“I worked at Boeing for about 1.5 years in the 2008-9 tim... by jacobush on Tuesday April 16, 2019 @08:29AM (#19673037)
Don't you think they could easily replace the GPS with some other navigation module?
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Re:“I worked at Boeing for about 1.5 years in the 2008-9 tim... by vonmoltke on Tuesday April 16, 2019 @10:16AM (#19673795)
I don't. The most accurate navigation system that doesn't require an off-platform signal is inertial (INS). INS units drift badly (relatively speaking), with errors measured in tens or hundreds of meters after only an hour. I have personally seen data from a unit that was off by kilometers after a couple days without GPS correction.
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Re:“I worked at Boeing for about 1.5 years in the 2008-9 tim... by gdy on Wednesday April 17, 2019 @01:07PM (#19684385)
INS drifts a lot, not sure how precise is stellar
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