Well done BA - good stuff. Supersonic record and now subsonic record - no mean feat (wind up the jacksy is often uncomfortable and can cause mayhem in the galley)
Originally Posted by
double_barrel
How accurately can aircraft predict the best altitude and route for their journey to take advantage of high altitude winds ?
How are winds aloft measured? With what frequency and resolution ? Is it trial and error, or reports from 'company' or is there a way of 'crowd sourcing' the information? If there was an automated system for all aircraft to continually share the windspeed and direction they were encountering, that should build-up a nice picture?
So many questions....
Start here Brother...
https://en.wikipedia.org/wiki/North_Atlantic_Tracks