Re: Shuttle Aerodynamics

Jim in Houston wrote:
On Thu, 20 Sep 2007 08:24:10 -0500, "Jorge R. Frank"
<jrfrank@xxxxxxxxxxx> wrote:

Jim in Houston wrote:
Ignorance confession time. I wonder, as I watch the shuttle lift off, which aero surfaces or
engine gimbals are responsible for what movements?
The SRB and SSME gimbals do all the flying.

The aerosurfaces are moved during ascent, but only for load relief, not flight control.
Thanks Jorge for the prompt reply. One more question, when the SSME's
move do they move independently or together? Thanks again.

More of a Danny question. I believe they move together during first stage and for pitch/yaw control during second stage, and independently for roll control during second stage. But I could be wrong.
.