yee@trident.arc.nasa.gov (Peter E. Yee) (07/25/89)
KSC SPACE SHUTTLE PROCESSING REPORT - MONDAY, JULY 24, 1989
STS-28 - COLUMBIA (OV 102) - LAUNCH PAD 39-B
This weekend, workers finished loading hypergolic
propellants into Columbia's onboard storage tanks.
Monomethylhydrazine and nitrogen tetroxide were loaded into the
tanks for the reaction control system and the orbital maneuvering
system pods. In addition, hydrazine was loaded into the orbiter's
auxiliary power units and the boosters' hydraulic power units.
A hot fire of the orbiter's auxiliary power units and
boosters' hydraulic power units has been conducted. Engineers are
troubleshooting an isolation valve on auxiliary power unit (APU)
number 2 that is indicating it is stuck open when it should be
closed. The valve is one of two between the hydrazine fuel tank
and the APU.
The Rotating Service Structure (RSS) was moved back around
the vehicle this morning and workers plan to gain access to the
aft compartment. Once in the aft compartment, workers will complete
work in the main propulsion system to rid engine one's helium system
of any contamination. A new line will be brazed in, and a filter and
valve will be replaced.
The Flight Readiness Review will be held July 25-26 here at
KSC, after which an official launch date will be announced.
STS-34 - ATLANTIS (OV 104) - OPF BAY 2
Filling and bleeding of the orbiter's hydraulic system was
completed this past weekend. The nose wheel steering test was
completed and a brake anti-skid test is underway. Technicians
installed heat shields around the three main engines. The left
hand orbital maneuvering system pod is being prepared for flight
at the Hypergolic Maintenance Facility and is scheduled to be
shipped to the Orbiter Processing Facility the end of this week.
STS-33 - DISCOVERY (OV 103) - OPF BAY 1
Power up operations and systems testing are planned today.
Modified washers are being installed for the liquid oxygen and
hydrogen two-inch disconnect valves in the 17-inch disconnect
cavity. A functional check of the forward reaction control system
is underway today. Thermal blankets behind the radiators are
being inspected this week. Modifications and tile work are
underway. The Ku-band drive assembly has been replaced.
STS-34 SOLID ROCKET BOOSTERS - VAB/RPSF
Joint closeouts are active on all booster field joints.
Stacking of the right forward assembly was completed this past
weekend. Mating of the external tank to the boosters is scheduled
to start on Friday.