STS-85 Day 11 Highlights
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- On Sunday August 17, 1997, 6:00 a.m. CDT, STS-85 MCC Status Report # 22
- Discovery is ready for its conversion from spacecraft to airplane in
preparation for tomorrow's planned landing at the Kennedy Space Center
in Florida, with touchdown set for 6:14 a.m. Weather forecasters
predict favorable conditions for the end of mission following 11 days
- Two small Orbital Maneuvering System burns are scheduled for about
7:15 and 8 a.m. to lower Discovery's altitude from 160 to 138 nautical
miles in order to place the vehicle in the proper orbit for the
desired trajectory needed for reentry and landing.
- While Commander Curt Brown, Pilot Kent Rominger and Flight Engineer
Bob Curbeam tested the orbiter's flight control systems to ensure they
are in good shape to support reentry into Earth's atmosphere, Payload
Commander Jan Davis and Mission Specialist Steve Robinson practiced
techniques that will be used in the assembly of the International
- With the CRISTA-SPAS satellite's Earth atmospheric observations
completed, the spacecraft became a simulator for the Functional Cargo
Block - the first element of the ISS. Davis maneuvered the satellite
into exact positions that will be seen on STS-88 for the FGB 's
attachment to the U.S.-built Node 1 as part of the second assembly
mission next year. Next, the satellite was maneuvered as elements
will be on another station assembly flight to attach part of the ISS
- These tests provide in-flight verification of ISS assembly concepts
while evaluating the usefulness of various visual cues for the crew.
The Space Vision System, the robotic arm situational awareness
displays and the automatic targeting computer vision system will
assist crew members that may not always have the benefit of direct
viewing of robotic arm operations during space station assembly tasks.
- Canadian Payload Specialist Bjarni Tryggvason, today, finished his
work with the Microgravity Vibration Isolation Mount. He is the sixth
Canadian to fly on the space shuttle.
- The crew was awakened at 10:45 last night to Lyle Lovett's."You're
Not from Texas," to begin the final day of on orbit operations,
including cleaning up the vehicle for the return home. One final
sleep adjustment for the astronauts has them going to sleep at about
two this afternoon and waking up just after 10 p.m. tonight to begin
entry and landing preparations.
- On Sunday August 17, 1997, 5:00 p.m. CDT, STS-85 MCC Status Report # 23
- Commander Curt Brown and Pilot Kent Rominger will fire Discovery's
orbital maneuvering system engines at 5:13 a.m. CDT Monday to initiate
the shuttle's return to Earth after 11 days of atmospheric research
and space station technology tests.
- Brown will guide the shuttle to a 6:14 a.m. CDT landing on runway 33
at the Kennedy Space Center. Forecasters are predicting favorable
conditions for Discovery's return to the Space Coast, but are watching
carefully the possibility of fog developing at the last
minute. Shuttle managers plan to shoot for a Tuesday landing in
Florida if Monday's landing there is not feasible.
- The crew's final day on orbit will begin with a wake-up call at
10:11 p.m. Sunday. About 1:30 a.m., the crew will finish packing up
the last of the loose items in the crew cabin, and about 2:30 a.m. the
shuttle's payload bay doors will be closed. Once the deorbit burn has
been completed, Discovery will begin falling back to Earth and feel
contact with the atmosphere at an altitude of 395,000 feet.
- Flight Engineer Robert Curbeam and Mission Specialist Steve
Robinson, both making their first shuttle flight, will join the
commander and pilot on the flight deck for landing. Payload Commander
Jan Davis and Payload Specialist Bjarni Tryggvason will be below on
- Returning to Earth with the astronauts will be the German-built
Cryogenic Infrared Spectrometers and Telescopes for the
Atmosphere-Shuttle Pallet Satellite-2 (CRISTA-SPAS-2), which spent
nine days flying in formation with Discovery and recording data about
the composition of the Earth's atmosphere, and the Technology
Applications and Science-1 (TAS-01) and International Extreme
Ultraviolet Hitchhiker-2 (IEH-02) instruments, which scanned the Earth
and the solar system from the payload bay. Also aboard will be the
Japanese-built Manipulator Flight Demonstration (MFD) experiment,
which tested a small robotic arm destined for use on the future
International Space Station.
- The STS-85 astronauts are scheduled to return home to the Houston
area and a ceremony at Ellington Field's Hangar 990 about 4:45
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