"John Doe" wrote in message:

At the time the speed brakes are deployed, is the nosewheel already on the
ground ? Would an asymetric speed brake veer the shuttle into an aligator
swamp, or could it maintain its course on the runway ?

The speed brakes are used long before landing, with control being
provided between Mach 10 to 5. The rudder is still functional when the
speedbrake is deployed.

--
Sent to you by Ken at
Replace "who?" with "b2" to reply by e-mail.