Re: ICBM warheads
From: Ian Stirling (root_at_mauve.demon.co.uk)
Date: 11/19/04
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To: sci-military-moderated@moderators.isc.org Date: 19 Nov 2004 13:24:07 GMT
Dirk Bruere at Neopax <dirk@neopax.com> wrote:
> How are the warheads of ICBMs triggered for an air burst?
> Presumably they are coming in at several thousand mph and are plasma sheathed so
> radar won't work.
Inertial navigation.
Basically just measuring the accellerations that the warhead undergoes, and
working out the position from these accellerations.
Because of the short time that the warhead is in the atmosphere,
(10-20 seconds?) this bit of guidance does not need to be very accurate.
I suspect even a $2 car airbag type sensor (50G +-0.5G) might do, with a
LEP of around 1Km.
That's probably a bit much, but you're only looking at maybe an order and
a half of magnitude better than that, nothing challenging compared to the
navigational accuracy needed for the bus.
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