[sarex] Mastracchio, Williams Install New Station CMG
azrowe80 at verizon.net
Mon Aug 13 13:08:43 PDT 2007
SUBMITTED BY ARTHUR N1ORC - AMSAT A/C #31468
> *Mastracchio, Williams Install New Station CMG *
> Rick Mastracchio removes failed CMGImage above: Astronaut Rick
> Mastracchio holds the failed control moment gyro shortly after its
> removal from the Z1 truss. Image: NASA TV
TO VIEW IMAGE GO
> STS-118 spacewalkers Dave Williams and Rick Mastracchio installed a
> new control moment gyroscope (CMG) into the International Space
> Station’s Z1 truss. They will secure the faulty CMG and equipment
> before wrapping up the excursion.
> The new CMG replaced a faulty gyroscope, which was removed during the
> first half of the spacewalk. The failed gyro will remain at its
> temporary stowage location on the station’s exterior before it is
> returned to Earth on a later shuttle mission. The new gyroscope is one
> of four CMGs that are used to control the station’s attitude in orbit.
> The excursion began 11:32 a.m. EDT. Mission Specialist Tracy Caldwell
> is serving as the spacewalk coordinator, and STS-118 Pilot Charles
> Hobaugh and Expedition 15 Flight Engineer Clay Anderson are operating
> the station’s robotic arm. The spacewalk is scheduled to wrap up about
> 6 p.m.
> Meanwhile, crew members are transferring cargo between Endeavour and
> the station. Experts on the ground continue to analyze imagery
> collected Sunday during the STS-118 crew’s focused inspection of five
> areas of concern on the Endeavour’s heat shield.
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