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BY SPACEFLIGHT NOW Follow the Expedition 11 crew's undocking from the International Space Station and return to Earth aboard the Russian Soyuz TMA-6 spacecraft. Reload this page for the latest.
YIESDAY, OCTOBER 11, 2005 After traveling 75 million miles during six months on the international space station, Expedition 11 Commander Sergei Krikalev and Flight Engineer John Phillips safely returned to Earth today. American businessman Gregory Olsen accompanied them aboard a Russian Soyuz spacecraft. The Soyuz landed in north-central Kazakhstan, about 53 miles northeast of Arkalyk, at 9:09 p.m. EDT. Olsen spent eight days on the station under a commercial agreement with the Russian Federal Space Agency. The crew's families will greet them at Star City near Moscow early tomorrow. Krikalev and Phillips will remain in Star City for post-flight debriefings before returning to Houston later this month. Krikalev and Phillips launched from the Baikonur Cosmodrome, Kazakhstan on April 14. They spent 179 days, 23 minutes in space. During their mission, they welcomed the Space Shuttle Discovery's crew in July and set important milestones. In June, Phillips became the first American to give congressional testimony from space. He appeared by satellite before the U.S. House of Representatives Subcommittee on Space and Aeronautics. On Aug. 16, Krikalev set the human record for time in space. He surpassed Cosmonaut Sergei Avdeyev's record of 747 days, 14 hours and 14 minutes. Krikalev is a veteran of six spaceflights, including two to the Russian space station Mir, two shuttle flights and the first international space station expedition. He spent 803 days, 9 hours and 39 minutes in orbit. The new station crew, Expedition 12 Commander Bill McArthur and Flight Engineer Valery Tokarev, will have light duty for the next few days, as they rest from the handover. They will remain in orbit six months and perform at least two spacewalks, the first in early November.
0207 GMT (10:07 p.m. EDT Mon.) Post-landing plans call for the crew to be flown from the site in helicopters within two hours of landing. They will be taken to the city of Kustanai for an initial welcoming ceremony. Then a Russian military transport plane will fly the crew to the Gagarin Cosmonaut Training Center in Star City, Russia, where their families will meet them.
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0117 GMT (9:17 p.m. EDT Mon.) "Thanks for the great fireworks show. We had a wonderful view," the space station's new commander, Bill McArthur, just radioed Houston.
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0101 GMT (9:01 p.m. EDT Mon.) With the jettisoning of the capsule's heat shield, the Soyuz altimeter is exposed to the surface of the Earth. Using a reflector system, signals are bounced to the ground from the Soyuz and reflected back, providing the capsule's computers updated information on altitude and rate of descent.
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0057 GMT (8:57 p.m. EDT Mon.) Initially, the Descent Module will hang underneath the main parachute at a 30-degree angle with respect to the horizon for aerodynamic stability, but the bottommost harness will be severed a few minutes before landing, allowing the Descent Module to hang vertically through touchdown.
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0054 GMT (8:54 p.m. EDT Mon.) The parachute deployment creates a gentle spin for the Soyuz as it dangles underneath the drogue chute, assisting in the capsule's stability in the final minutes before touchdown.
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0046 GMT (8:46 p.m. EDT Mon.) The entry guidance by the spacecraft's onboard software package is scheduled to start in a couple of minutes.
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0039 GMT (8:39 p.m. EDT Mon.) Just above the first traces of the Earth's atmosphere, computers will command the separation of the three modules of the Soyuz vehicle. With the crew strapped in to the Descent Module, the forward Orbital Module containing the docking mechanism and rendezvous antennas and the rear Instrumentation/Propulsion Module, which houses the engines and avionics, will pyrotechnically separate and burn up in the atmosphere. The Descent Module's computers will orient the capsule with its ablative heat shield pointing forward to repel the buildup of heat as it plunges into the atmosphere. The crew will feel the first effects of gravity in six months at the point called Entry Interface, when the module is about 400,000 feet above the Earth, about three minutes after module separation.
0033 GMT (8:33 p.m. EDT Mon.) In about 10 minutes, computer commands will fire explosives to separate the three Soyuz modules for atmospheric entry. The crew is strapped inside the Descent Module.
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0019 GMT (8:19 p.m. EDT Mon.) The capsule is flying backward over the southern Atlantic Ocean, just east of South America, on a northeasterly trajectory bound for Africa and eventually Central Asia where landing is expected at 9:09 p.m. EDT in the heart of Kazakhstan.
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MONDAY, OCTOBER 10, 2005
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2149 GMT (5:49 p.m. EDT) The Russian capsule is bringing the Expedition 11 commander Sergei Krikalev and flight engineer John Phillips, along with space tourist Greg Olsen, back to Earth this evening. Expedition 11 spent six months living on the station, while Olsen visited for a week.
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2146 GMT (5:46 p.m. EDT) The station's steering jets are inhibited to prevent any movements during the undocking.
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1853 GMT (2:53 p.m. EDT) Commander Sergei Krikalev will be taking the center seat in the Soyuz, flanked by flight engineer John Phillips in the left seat and tourist Greg Olsen in the right seat. The undocking is coming up at 5:45 p.m. EDT.
SUNDAY, OCTOBER 9, 2005 Commander Sergei Krikalev and flight engineer John Phillips, along with space tourist Greg Olsen, will say their goodbyes to the station's new crew -- Expedition 12 commander Bill McArthur and flight engineer Valery Tokarev -- and then float into the Soyuz TMA-6 craft currently docked to the station's Zarya module. The homeward-bound men will work together over the next couple of hours to power up the Soyuz, active the craft's systems, remove docking clamps, depressurize the vestibule between the capsule and station and perform other work to ready for undocking. McArthur, Tokarev and Olsen launched to the station last week on Soyuz TMA-7. After the brief stay, Olsen is going home Monday while Expedition 12 is left behind for a half-year tour-of-duty on the outpost. The command to begin opening hooks and latches firmly holding Soyuz to its Earth-facing docking port will be sent at 5:42 p.m. EDT (2142 GMT). Physical separation between the two craft occurs three minutes later as the capsule backs away at just one-tenth of a meter per second. After moving about 20 meters from the station, the Soyuz engines will fire for eight seconds at 5:48 p.m. EDT (2148 GMT) to execute the so-called separation burn to propel the craft a substantial distance from the complex. About two-and-a-half hours later, Soyuz will be 19 kilometers from the station. The capsule's engines will ignite for the four-minute, 19-second deorbit burn to brake from space. The onboard computers will initiate an engine firing at 8:18:39 p.m. EDT (0018:39 GMT) that slows the ship by 115.2 meters/sec, just enough to slip out of orbit for the return to Earth. Just before reaching the top of the atmosphere, the Soyuz's three distinct modules will separate at 8:43:17 p.m. EDT (0043:17 GMT) under computer command. The crew will be located in the Descent Module, which is sandwiched between the forward Orbital Module containing the docking mechanism and the rear Instrumentation and Propulsion Module housing the engines and avionics. The Descent Module orients itself to point the ablative heat shield in the direction of travel to protect the craft and crew from the intense plunge back to Earth. At 8:46:13 p.m. EDT (0046:13 GMT), the moment of Entry Interface occurs as the capsule hits the upper fringes of the atmosphere for the fiery re-entry. During the fall to Earth, the Orbital Module and Instrumentation and Propulsion Module will burn up in the atmosphere. Six minutes after Entry Interface, the crew will experience the period of maximum G-loads during entry as they feel the tug of Earth's gravity for the first time since launch. At 8:54:40 p.m. EDT (0054:40 GMT), the onboard computers will start a commanded sequence for deployment of the capsule's parachutes at an altitude of about 10 kilometers. Two "pilot" parachutes are unfurled first, extracting a 24-square-meter drogue parachute. Within 16 seconds, the craft's fall will slow from 230 meters per second to about 80 m/s. The parachute deployment creates a gentle spin for the Soyuz as it dangles underneath the drogue chute, assisting in the capsule's stability in the final minutes before touchdown. The drogue chute will be jettisoned, allowing the main parachute to be deployed. It is connected to the Descent Module by two harnesses, covers an area of about 1,000 square meters and slows descent to 7.2 meters/second. Initially, the Descent Module will hang underneath the main parachute at a 30-degree angle with respect to the horizon for aerodynamic stability, but the bottommost harness will be severed a few minutes before landing, allowing the Descent Module to hang vertically through touchdown. At an altitude of just over 5 kilometers, the heat shield will be cast free. That is followed by dumping of any residual propellant from the Soyuz. Once the heat shield is gone, the Soyuz altimeter is exposed to the surface of the Earth. Using a reflector system, signals are bounced to the ground from the Soyuz and reflected back, providing the capsule's computers updated information on altitude and rate of descent. At an altitude of about 12 meters, cockpit displays will tell Krikalev to prepare for the soft landing engine firing. Just one meter above the surface, and just seconds before touchdown, the six solid propellant engines are fired in a final braking maneuver, enabling the Soyuz to land to complete its mission, settling down at a velocity of about 1.5 meters per second. Touchdown is expected at 9:09:40 p.m. EDT (0109:40 GMT) on the steppes of north-central Kazakhstan, about 37 minutes before sunrise at the landing site. Expedition 11 concludes with a duration of 179 days and 23 minutes. A group of Russian military helicopters carrying the recovery forces, including a U.S. flight surgeon and astronaut support personnel, should arrive soon after landing to help the crew exit the capsule. Each crew member will be placed in special reclining chairs near the capsule for initial medical tests and begin readapting to Earth's gravity. They will be transferred into a portable medical tent erected near the touchdown point where the three men can remove their spacesuits. Post-landing plans call for the crew to be flown from the site in helicopters within two hours of landing. They will be taken to the city of Kustanai for an initial welcoming ceremony. Then a Russian military transport plane will fly the crew to the Gagarin Cosmonaut Training Center in Star City, Russia, where their families will meet them. |
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