Simviation Forums

i have some problems when i am going to land with a plane like the 737, bae146-200... how many flaps must i open and how must i use the spoilers? thanks

spoilers to be deployed on touchdown
flaps need to be lowered to full in stages, at certain speeds. read the kneepad of each plane to see what they are

Okay, flaps are used to disrupt the airflow of a wing and increase the lifting area (Fowler type anyways), so use minimal flaps on an approach for a landing (between 1 and 5% depending on the aircraft).
Spoilers disrupt the airflow and help to reduce speed, so you should use those on the approach to get the airspeed down ready for landing.
Once on the ground give both the max and you should stop in next to no-time

Ozzy

I thought that you should retract flaps on landing?  The theory being that by deploying full flaps you increase your lift and thus reduce the grip your wheels have on the runway and therefore making breaking less effective and increasing roll out.

But then I'm probably wrong LOL.

Will

Flaps are designed so that at landing speed when they are fully deployed, they are creating a lot of drag as well as some lift (although obviously not as much as they are when deployed for take off), and as the approach speed is not that much above the stall speed, the lift generated once the a/c is on the ground is soon less than the weight of the a/c (no danger of taking off again then). Combined this with spoilers, to "dump" the lift, and Bob is you Uncle very quickly indeed...

Charlie

Gotcha.  Thought I would end up wrong, I usually do!

I've flown with guys (only light aircraft) that would retract the flaps after touchdown. IMO during the time that it takes for the cycle to occur (flap retraction), the a/c loses enough speed for the wing to become mostly innaffective. Some, if not all, Hawkers have a flap setting(I believe either 70* or 80* ), that is initiated AFTER touchdown. Remember, a flap produces more lift but it also produces more drag.

Flaps are designed so that at landing speed when they are fully deployed, they are creating a lot of drag as well as some lift (although obviously not as much as they are when deployed for take off),
Charlie

  Oops! Is there an echo in here? Sorry! Attention to detail is not always my strong skill.

..........and hopefully you mean to say "not as much" DRAG.

On the 737, flaps 30 is the normal config.
Use full flaps (40) only on wet, short runways where a lower stall speed would be preferable (although we're only dealing with some 3-5 knots here)

Glad to see your enthusiasm of learning real life procedures esbolico. That will definetely help you in Flight sim