yee@trident.arc.nasa.gov (Peter E. Yee) (04/21/89)
KSC SPACE SHUTTLE PROCESSING REPORT - FRIDAY, APRIL 21, 1989
STS-30 - ATLANTIS (0V 104) - PAD 39-B
The power reactant storage and distribution system dewars at
the pad were loaded with liquid hydrogen and liquid oxygen
reactants early this morning. Today, the external tank is
scheduled to be purged with helium to bring the dew point to
required specifications for loading and for launch.
Workers are continuing with closing out the orbiter's aft
compartment. Closing out the aft includes installing thermal
blankets, closing out the main engines, performing inspections,
removing platforms and removing protective covers. Launch
countdown preparations have begun.
A payload simulated launch countdown was conducted
yesterday, scheduled with a mock T-zero at 2:24 p.m. yesterday.
Both the Inertial Upper Stage and Magellan payload were powered
up for the test.
Final ordnance operations are scheduled for Saturday. The
pad will be closed during these activities which involve testing
the paths used in activating ordnance devices and removing safe
and arm pins for flight.
Launch of mission STS-30 is scheduled for April 28 at 2:24
p.m. (EDT) with a window of 23 minutes. The countdown is
scheduled to begin at 8 a.m. Tuesday, April 25, and the five-
member flight crew will arrive that afternoon.
STS-28 - COLUMBIA (OV 102) - OPF BAY 1
Columbia's Ku-band antenna was stowed and the payload bay
doors were closed last night to allow tile activities on the
hinge line. Orbiter systems testing is continuing this week,
including check out of the main propulsion system, water spray
boilers, air revitalization system and waste containment system.
Workers are installing the gaseous oxygen flow control valves
this week. Thermal protection system operations are continuing.
Work is underway to prepare the two orbital maneuvering system
pods for installation on the orbiter. The main engines are
scheduled to be installed next week.
STS-33 DISCOVERY (OV 103) - OPF BAY 2
Structural post-flight inspections and window polishing are
continuing this week. The vendor is removing the 4 and 2-inch
valves for analysis. Engineers want to determine the cause of
marks discovered on the umbilical area during post-flight
inspections. Preparations are underway to remove the left orbital
manuevering system pod. One of the jobs planned for the left pod
is to repair the "clamshell" fix made prior to STS-26.
STS-28 SOLID ROCKET BOOSTERS - VAB/RPSF
Yesterday, technicians mated the left forward segment to the
left booster. Joint closeouts are active on the left booster.
The right aft center segment is scheduled to be transferred to
the VAB on Monday in preparation for stacking.
At the RPSF, technicians are preparing the right hand STS-28
segments, and other segments for the next set of boosters, for
stacking.