yee@ames.arc.nasa.gov (Peter E. Yee) (09/21/88)
KSC SPACE SHUTTLE PROCESSING REPORT FOR - Tues. Sept. 20, 1988
STS-26 - DISCOVERY (OV 103) - PAD 39-B
Yesterday, the extravehicular mobility units (EMUs), or
space suits, were installed and checked out. The redundant
inertial measurement unit (RIMU), which is part of the Inertial
Upper Stage's guidance system, was replaced yesterday. Retest of
the RIMU is scheduled today.
Other jobs underway today include closeouts of the aft
compartment and installation of heat shields.
The frequency response test of main engine valves began
today. During the test, the pre-burner oxidizer valve actuator on
main engine number 3 failed. The actuator is scheduled to be
replaced overnight and is not expected to impact the launch
schedule.
Launch countdown preparations are scheduled to begin
tomorrow. The launch countdown is scheduled to begin at 12:01
a.m. Monday, Sept. 26. The count will begin at the T-43 hour mark
leading to a planned T-zero at 9:59 a.m. EDT Thursday, Sept. 29.
The STS-26 flight crew is scheduled to arrive at KSC Monday
afternoon for final pre-flight preparations.
STS-27 - ATLANTIS (0V 104) - OPF BAY 2
Operations scheduled today include servicing the water spray
boilers, installation of heat shields, waterproofing the tiles
and preparations for running the main engine frequency response
test on Wednesday. Structural leak checks of the orbiter are
planned for this weekend.
STS-28 - COLUMBIA (OV 102) - OPF BAY 1
Technicians are preparing the orbiter's freon coolant lines
and water lines for power up planned for Friday at 10 a.m. Work
will continue to implement return-to-flight modifications in
parallel with power up testing of orbiter electrical systems.
STS-27 SOLID ROCKET BOOSTERS/EXTERNAL TANK - VAB
The external tank was moved from its storage cell in the VAB
and is on the transporter in the transfer aisle being prepared
for lifting later today. The tank is scheduled to be mated to the
solid rocket boosters overnight.