yee@ames.arc.nasa.gov (Peter E. Yee) (09/20/88)
KSC SPACE SHUTTLE PROCESSING REPORT FOR - Mon. Sept. 19, 1988
STS-26 - DISCOVERY (OV 103) - PAD 39-B
Over the weekend, workers successfully completed the helium
signature leak test of the main propulsion system and three main
engines. After careful analysis of the data collected concerning
the small leak in the liquid hydrogen system, engineers
determined that it is within the allowable specifications.
Saturday night, during a countdown simulation of Inertial
Upper Stage (IUS) - 7, one of five internal gyros in a Redundant
Inertial Measurement Unit (RIMU) drifted beyond acceptable
limits. The unit is part of the IUS guidance system. Based on
analysis, a decision was made to change out the RIMU. The
changeout operation is now underway and there will be no impact
to the launch date.
Today, workers are scheduled to install and check out the
extravehicular mobility units (EMUs), or space suits. Although
there are no plans for a space walk during the STS-26 mission,
EMUs are always stowed onboard in case an unplanned space walk
becomes necessary.
Other activities planned today include preparing the
hydraulics system for the frequency response test of the valves
in the main engines and checkout of the orbiter's aerosurfaces.
The test is planned for early tomorrow.
Orbiter aft closeouts and inspections and thermal protection
system operations are active today. The power reactant storage
and distribution system will be purged on Wednesday and later
this week, ordnance devices on the vehicle will be tested for
flight.
On Wednesday, technicians will begin preparations for
picking up the launch countdown on Mon. Sept. 26 at 12:01 a.m.
EDT. The count will pick up at the T-43 hour mark and will
proceed down to the planned T-zero, currently targeted for 9:59
a.m. Thurs., Sept. 29.
STS-27 - ATLANTIS (0V 104) - OPF BAY 2
The third and last main engine, number 2030, was installed
in the number two slot on Friday, and today electrical
connections will be tested. Activities planned today include
installation of heat shields, leak checks of the main propulsion
system, work on the new gaseous oxygen manifold and thermal
protection system operations. All the flight tires have been
installed on the vehicle. Atlantis is scheduled to be transferred
to the VAB next month for mating with the tank and boosters.
STS-28 - COLUMBIA (OV 102) - OPF BAY 1
Technicians are preparing the freon coolant loops and water
coolant loops for power up operations. Power up is planned for
Friday at 10 a.m. The freon and water loops are needed to keep
various systems at required temperatures during power up
operations. Orbiter modifications and inspections are continuing.
STS-27 SOLID ROCKET BOOSTERS - VAB
Closeouts of the solid rocket booster joints are almost
completed. The external tank is being loaded on its transporter
today in preparation for mating to the boosters tomorrow.
STS-29 SOLID ROCKET BOOSTERS - RPSF
Technicians are preparing to mate the nozzle to the left aft
skirt in the Rotation Processing and Surge Facility.sw@whuts.UUCP (WARMINK) (09/20/88)
In article <15140@ames.arc.nasa.gov>, yee@ames.arc.nasa.gov (Peter E. Yee) writes: > KSC SPACE SHUTTLE PROCESSING REPORT FOR - Mon. Sept. 19, 1988 > STS-26 - DISCOVERY (OV 103) - PAD 39-B > and distribution system will be purged on Wednesday and later > this week, ordnance devices on the vehicle will be tested for > flight. How does on test an ordnance device *before* the flight???? Just a little puzzled about what is meant... -- ------------------------------------------------------------------------------ If all statisticians were laid end to end | Stuart Warmink, NAPC across the Atlantic, 99% would drown :-) | <att>!whuts!sw Whippany NJ USA -----------> My opinions are not necessarily those of my employer <-----------
dave@viper.Lynx.MN.Org (David Messer) (09/21/88)
In article <4787@whuts.UUCP> sw@whuts.UUCP (WARMINK) writes: >In article <15140@ames.arc.nasa.gov>, yee@ames.arc.nasa.gov (Peter E. Yee) writes: >> this week, ordnance devices on the vehicle will be tested for >> flight. > >How does on test an ordnance device *before* the flight???? >Just a little puzzled about what is meant... How about checking the igniters for electrical conductivity? Of course you don't want to check them too hard... :-) -- If you can't convince | David Messer - (dave@Lynx.MN.Org) them, confuse them. | Lynx Data Systems -- Harry S Truman | | amdahl --!bungia!viper!dave | hpda / Copyright 1988 David Messer -- All Rights Reserved This work may be freely copied. Any restrictions on redistribution of this work are prohibited.