Originally Posted by
physicus
DaveReidUK the profile you posted looks like a perfectly normal takeoff profile including acceleration phase. or am I missing something?
Yes, you're missing the fact that the first part of the profile (to around 02:42:34) is pure fiction. The aircraft was on the runway until that point; the BBC would have us believe that it climbed steadily from SL to the airfield altitude (3300').
Why they didn't simply truncate the graph so that it started at the point of rotation, I don't know.