@Bobman
re: SAMs
Even missiles from 1961 only had a warm up time of 30 seconds.
V-755U 20DSU (Guideline Mod.3) surface to air missile
AP-755 autopilot, steering fins.
Time to spin up gyroscopes before launch: 30 second
Time to keep gyroscopes spinning without overheating: 5 minutes
This gives a 777 at cruise speed of 900km/h time to move less than 1km which is nothing when you've got detection and missile ranges of 45km to 75km and a target that can't detect, let alone manoeuvre or deploy countermeasures to avoid you.
All this info based on the SA-2E SAM system. For more details check out the "
SAM Simulator" and read the supplied documentation then give it a go. You'll be achieving 80% kill rates against similar targets (I use the B52 target drone) in no time at all. You'll see exactly how hard it is to identify different targets from radar scope, but how easy it is to detect, track, lock and fire on a target.