STS-96 Day 8 Highlights
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- On Thursday, June 3, 1999, 7:30 a.m. CDT, STS-96 MCC Status Report # 16
reports:
- Discovery's astronauts closed the hatches leading into the
International Space Station early this morning and boosted the station
into a higher orbit to set the stage for a planned arrival of the
Russian-built Zvezda Service Module later this year.
- After moving the last items from Discovery into the station, the
crew closed the final hatch on the orbiting outpost at 3:44 a.m. CDT.
The astronauts spent a total of 79 hours, 30 minutes inside the
station during this flight. Combined with the 28 hours, 30 minutes the
STS-88 astronauts spent on board during the first ISS assembly flight
last December, the total human occupation time for the new station
stands at 108 hours.
- During four days of transfer work, the astronauts moved more than
4,500 pounds of equipment, hardware and supplies intended for the
station's first resident crew. Of that total weight, 3,567 pounds of
material, including 686 pounds of water, were transferred from
Discovery to the station; 18 items weighing 197 pounds were moved from
the station to Discovery for a return to Earth; and 662 pounds of
supplies were mounted to the station during a spacewalk by astronauts
Tammy Jernigan and Dan Barry.
- The crew began its carefully choreographed departure from the
station, first closing Zarya's Instrumentation Cargo Compartment hatch
at 1:40 a.m. Central time. The Pressurized Adapter Hatch was closed
at 2:12 a.m., and the final hatch closure on Unity was complete at
3:44 a.m.
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- Shortly after 4:30 this morning, Commander Kent Rominger and Pilot
Rick Husband commanded a series of 17 pulses of Discovery's reaction
control system jets to boost the station's orbit. When the reboost
was complete about 37 minutes later, the station and shuttle were in
an orbit of approximately 246 by 241 statute miles, within 57 feet of
the original target. Flight controllers estimate the station will be
at an altitude of 222 statute miles late this year when Zvezda is
scheduled to be launched from the Baikonur Cosmodrome in Kazakhstan.
- Discovery is scheduled to undock from the station at 5:39
p.m. Central time today and will perform a 2 ½ lap flyaround of the
station, before Husband fires Discovery's jets in a final burst to
move Discovery away from the station, concluding six days of docked
operations.
- The astronauts begin an eight-hour sleep period at 7:50 a.m. today,
and will awaken at 2:50 p.m.
- The next STS-96 mission status report will be issued at about 7
p.m. Thursday or as developments warrant.
- On Thursday, June 3, 1999, 8:00 p.m. CDT, STS-96 MCC Status Report # 17
reports:
- Discovery departed the International Space Station at 5:39
p.m. Central today as the two spacecraft flew 245 miles above
northwest Mongolia, leaving the new outpost stocked with more than two
tons of supplies and equipment for future crews.
- Pilot Rick Husband backed Discovery away after astronaut Tammy
Jernigan commanded the shuttle's docking mechanism to release the
station. Springs in the mechanism provided an initial push, and then
Husband fired Discovery's jets to move to a distance of about 400 feet
before beginning a two and a half-circle flyaround. Discovery spent 5
days, 18 hours and 17 minutes linked to the station.
- The crew awakened this afternoon to Lynyrd Skynyrd's "Free
Bird" in anticipation of Discovery's departure from the
International Space Station. Atlantis will be the next shuttle to
visit the station on a December supply mission, after the Russian
launch this fall of an unpiloted living quarters that will
automatically dock with the modules. The Service Module, now named
Zvezda, which is the Russian word for 'Star,' is undergoing its final
months of processing at the Baikonur Cosmodrome in Kazakhstan, prior
to launch atop a Proton rocket.
- After the flyaround, Husband fired Discovery's jets at about 7:53
p.m. Central to depart the station's vicinity. The engine firing sent
the Shuttle below and ahead of the station, separating at a rate of
about seven nautical miles with each orbit of Earth. Later this
evening the crew will transfer the spacesuits used earlier in the
flight to storage locations in the shuttle's airlock. Commander Kent
Rominger will repressurize Discovery's cabin to about 14.7 pounds per
square inch, a pressure identical to sea level on Earth. The cabin
was depressurized slightly yesterday as part of the normal procedure
for sealing hatches within the International Space Station. The crew
will have time off for the last half of its day.
- After Discovery has left the vicinity, station flight controllers
will maneuver the complex into the standard orientation for unpiloted
operations, a fuel-conserving slow spin with the Unity module pointed
toward Earth and Zarya toward space. Discovery's crew will begin an
eight-hour sleep period at 7:50 a.m. Central Friday and awaken at 3:50
p.m.
- The next STS-96 mission status report will be issued at about 7
a.m. Friday or as developments warrant.
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