Take-Off Performance
 

I was looking at some charts (field length vs. still air range) regarding the Avro RJ's take-off performance (but I guess it would also apply to other aircraft) and it looks to me like the take-off length needed has quite a significant impact on range. Is this a correct interpretation of the charts?

If so, I'm assuming that it's because you burn a lot of fuel when you do a steep take off? I guess this makes sense but I wasn't expecting to see such a drastic reduction in range.

Can anyone shed a bit of light on this?

Thanks!

G'day

I'm no pilot, I be a ATC bloke, but take of run available has a significant impact on range as the shorter the possible run, the lighter the aircraft has to be, so the less payload (pax / freight and FUEL) the aircraft can safely carry. Less fuel, lower range.

F=Ma and all that. If the F of the engines remains the same, the higher the M, the lower the acceleration. Slower acceleration needs more runway to reach the same speed.

Also as the lift created is a function of the speed, to lift a heavier mass you need greater lift and therefore speed. So it's a compounded issue. Higher mass, slower acceleration but a higher speed needed for lift off!

Try looking at the charts differently, enter with the runway length available, that will give you the takeoff weight which in turn will give you the payload /range.

Mutt

Short Runway = Limited Takeoff Weight = Reduced Fuel and/or Payload = Reduced Range.

Nothing to do with "you burn a lot of fuel when you do a steep take off".

Regards,

Old Smokey

Thanks everyone!