yee@trident.arc.nasa.gov (Peter E. Yee) (08/28/90)
[Upgrade to C News induced posting delays. -PEY]
KSC SHUTTLE STATUS REPORT - TUESDAY, AUGUST 21 1990 10 A.M.
STS-35 - COLUMBIA (OV 102) - PAD 39-A
The main engine Flight Readiness Test is scheduled today
with the call-to-stations at 8 a.m. This test simulates engine
start in order to check engine valve opening and closing se-
quences and timing. Engine sensors and transducers are calibrated
during this test. Part of this test includes cycling the
orbiter's aerosurfaces.
Yesterday, technicians completed servicing the orbiter with
hypergolic propellants. Monomethylhydrazine and nitrogen
tetroxide propellants were loaded into the orbiter's onboard
storage tanks for the orbital maneuvering system pods and the
reaction control system. In addition, storage tanks for the
orbiter's auxiliary power units and the boosters' hydraulic power
units were filled with hydrazine.
Tomorrow, two space suits will be installed in the airlock
as a routine for in-flight contingency purposes.
Yesterday, the Flight Readiness Review concluded and shuttle
managers selected Sept. 1 as the target to launch Columbia and
the Astro-1 payload. The launch countdown will begin at midnight
Tuesday, Aug. 28 leading up to the planned liftoff at 1:17 a.m.
EDT on Saturday, Sept. 1.
STS-38 - ATLANTIS (OV 104) - OPF BAY 2
Sniff checks of the freon cooling system are underway today.
Checks of the reaction control system are also continuing. Tiles
around the windows are being inspected. Replacement of the
gaseous oxygen flow control valves is scheduled today.
STS-41 - DISCOVERY (OV 103) - OPF BAY 1
Tile operations around the main landing gear doors are con-
tinuing. One of the right windows is being replaced because of a
small impaired area. All areas of the vehicle are being closed
out for roll to the VAB now targeted for this weekend. The date
for rolling the vehicle over to the VAB is being evaluated. The
routine rollover review meeting is planned for Thursday.