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Posted by Jorge R. Frank on September 13, 2006, 11:43 pm
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> Jorge R. Frank wrote:
>> Most of the control authority is provided by the SRB gimbals, though the
>> SSME gimbals are also used.
>
> The SSME's must work okay for roll control since they must do the 180
> to heads up long after the SRB's are gone (or are OMS and RCS used for
> that?).
The former; roll to heads up is performed by the SSMEs.
--
JRF
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> or are the main engines gimballed? Do SRB nozzles move too?