yee@trident.arc.nasa.gov (Peter E. Yee) (06/29/89)
KSC SPACE SHUTTLE PROCESSING REPORT - WEDNESDAY, JUNE 28, 1989
STS-28 - COLUMBIA (OV 102) - OPF BAY 1
Last night, technicians removed an electronic box for the
pilot's heads-up-display because of an intermittent lighting
problem. The new electronic box is being installed today in the
middeck and retesting will be required.
Preparations are underway today to replace another
electronic box, called a motor control assembly (MCA). This
particular MCA sends commands to the orbiter's vent doors,
external tank doors and orbital maneuvering system crossfeed
valves. In addition, the MCA relays information about the
position of those systems to the orbiter's cockpit. Engineers
discovered that the MCA experienced an internal blown fuse link.
A positive pressure structural leak test of the aft
compartment and midbody was completed last night. Preparations
are continuing for a frequency response test of the orbiter's
aerosurfaces this week.
Technicians are continuing to bond tiles, install gap
fillers and fit and install thermal blankets on the payload bay
doors.
The target date for transferring Columbia to the Vehicle
Assembly Building is no earlier than 12 noon Saturday, July 1.
While in the VAB, Columbia will be bolted to the huge external
tank.
STS-34 - ATLANTIS (OV 104) - OPF BAY 2
Preparations are underway to install tires on the main
landing gear this week. Work scheduled today includes leak and
functional testing of the auxiliary power units, checkout of the
main propulsion system liquid oxygen system and preparations for
a radar test of the Ku-band antenna. Testing of the right orbital
maneuvering system pod is scheduled. Coolant lines were recently
installed for the radioisotope thermoelectric generators (RTGs),
used to power the Galileo spacecraft, and leak checks are planned
this week.
STS-33 - DISCOVERY (OV 103) - OMRF
Power down work and modifications continue this week in the
forward, mid and aft sections of the orbiter. Discovery will be
transferred to bay 1 shortly after Columbia is moved to the VAB.
STS-28 SOLID ROCKET BOOSTERS - VAB
Closeouts of the boosters and tank are underway in
preparation for mating with the orbiter Columbia.
STS-34 SOLID ROCKET BOOSTERS - VAB/RPSF
Technicians are calibrating instrumentation between the
right aft skirt and the mobile launcher platform. The right aft
center segment is scheduled to be transferred to the VAB transfer
aisle tonight.
Meanwhile, the last two right hand segments are being
readied for stacking in the Rotation Processing and Surge
Facility.