B744 take off performance
Hi, hope you can help. This has puzzled me for a while now.
A couple of years ago, I flew from Heathrow to Brisbane via Kuala Lumpur. I can't remember why, but I timed the take off rolls.
LHR to KLIA 14 hr flight - 55 seconds.
KLIA to BNE 8 hr flight - 65 seconds.
I was just wondering why the take off roll at LHR was less, despite carrying more fuel for the longer leg. The a/c was full of pax on both legs. The r/w at KLIA is about 3000' longer than at LHR. Is it just that less engine power is used/reqired to reach Vr due to that extra 3000' ?
Cant say for sure, but I think surface winds at both aerodromes were calm.
Thanks in advance,
AV8