Ground handling

Date:         01 Feb 99 02:37:29 
From: (Bill Urban)
Organization: Onward Inc.
Followups:    1 2 3 4
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Hello all,

I have some questions about ground handling of large a/c.

I know that the nosewheel tiller, the rudder, and the brakes may all be
used to control direction on the ground at various speeds.  But I still
wonder about some of the particulars:

* Does the nosewheel caster, so that the tiller returns to center when
released?  Does it lock on center so you don't have to worry about the
tiller being off-center when you land?

* On rollout, what combination of rudder and asymmetric braking is used
to steer, and when does nosewheel steering take over?

* Finally, what is the physical arrangement that (I think) lets you use
the same pedals to control the rudder and the two sides' brakes? It seems
at least that the sense is correct on this user interface, i.e. left
rudder pedal -> left turn and asymmetric left brake -> left turn as well.

Thanks for any input,

Bill Urban