* Posts by rszasz

1 publicly visible post • joined 26 Jul 2019

Airbus A350 software bug forces airlines to turn planes off and on every 149 hours

rszasz

Re: Echoes of the Patriot missiles in Gulf War 1.0 ..

To keep tracking an object with radar, you set a "gate" and try and acquire the target again in the next period within the updated gate. The underlying problem was that different bits of the software calculated the time slightly differently leading to the gate being about .3 of a second out of sync after 100 hours. (counting upward with fixed point or floating point numbers is not as simple as people expect)