Originally Posted by
condor17
Most short haul 2 engine jets that I've flown get to Vr at about the 30 secs mark . So TLAR [ that looks about right ] . Seem to remember the rotation rate that I was taught was about 2 1/2 degrees per sec [ 6 secs to 15 degrees pitch ] .Therefore lift off is a few seconds later that rotate .
Longhaul , 2 or 4 eng ; Vr at about 45-50 secs . Very longhaul or hot 'n high , Vr at about 60 secs or more !
rgds condor .
(Writing solely as a passenger: I am not an airline pilot)
If you've ever been on a 747 taking off from Johannesburg to Europe, a 60+ second take-off roll was standard. But then it's at 5,500' altitude and flying distance to London is 5,600 miles/9,000km. Runway 03L in JHB is 4,400 metres/14,000 ft long.