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Old 2012-03-13, 01:11   Link #580
Vexx
Obey the Darkly Cute ...
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Join Date: Dec 2005
Location: On the whole, I'd rather be in Kyoto ...
Age: 66
Flight system avionics (for aircraft or missiles) go through some grueling QA/QC, V&V testing so that's why builders don't upgrade very often and try to get maximum efficiency out of every RAM bit and CPU cycle.

That's why AP-101 series are still used though the design is about 40+ years old. Most missile avionic gear is "unique" but is typically based on a MIL-STD 1553 bus architecture. Equipment details are usually classified.
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