1.12.08

Προσγειώθηκε στη Καλιφόρνια το διαστημικό λεωφορείο Εndeavour τερματίζοντας την αποστολή STS-126

Τελευταία ενημέρωση 30/11/08 23:37

Με ασφάλεια προσγειώθηκε, χθές Κυριακή 30/11/2008, στην Καλιφόρνια αντί της Φλόριντας όπως είχε αρχικά προγραμματιστεί το διαστημικό λεωφορείο Endeavour, τερματίζοντας τη μακρά παραμονή του στο Διεθνή Διαστημικό Σταθμό (ΙSS). Οι ελεγκτές ακύρωσαν δύο φορές μέσα στην ημέρα τη διαδικασία καθόδου και προσεδάφισης στη Φλόριντα καθώς οι καιρικές συνθήκες ήταν κακές. Η προσγείωση προγραμματιζόταν αρχικά για το απόγευμα της Κυριακής (ώρα Ελλάδος).

Η NASA δήλωνε ότι εξέταζε, στην περίπτωση αδυναμίας προσέγγισης στη Φλόριντα το Endeavour να προσγειωθεί στην στρατιωτική βάση Εντουάρτς στην Καλιφόρνια, όπου οι καιρικές συνθήκες ήταν πολύ καλές.

Το Endeavour μετέφερε επτά αστροναύτες. Παρέμεινε στο διάστημα 16 ημέρες.

in.gr

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Cape Canaveral, Florida (AFP) Nov 30, 2008

The US space shuttle Endeavour and its crew of seven landed safely Sunday at a California air base to conclude a 16-day mission to double living capacity at the International Space Station.

NASA's shuttle descended through a clear blue sky over the Mojave Desert to touch down at 1:25 pm local time (2125 GMT) at Edwards Air Force Base, hours after bad weather forced US space agency officials to switch the landing venue from the traditional site of Kennedy Space Center at Cape Canaveral, Florida.

"Welcome back, it's a fantastic finish to a fantastic flight," Alan Poindexter, an official at NASA's control center in Houston, Texas, told Endeavour's crew moments after it touched down and rolled to a stop at 1:25 pm (2125 GMT) at Edwards Air Force Base in the Mojave Desert 160 kilometers (100 miles) northwest of Los Angeles.

"We are happy to be here in California," shuttle commander Chris Ferguson replied.

Poindexter had earlier told the crew that forecasts for conditions at Cape Canaveral were not expected to improve significantly over the next day, prompting the change of landing venue.

Endeavour needed to land by Tuesday, by which point it would have nearly exhausted its supplies of oxygen and water as well as its hydrogen batteries, which supply electricity.

NASA does not wait until the last minute to bring a shuttle back to Earth.

During the shuttle's 63-minute dive towards the California desert, approaching from the Pacific Ocean, temperatures soared to nearly 1,500 degrees Celsius on Endeavour's thermal tile-protected wings, nose and belly as it raced through the denser layers of the atmosphere from about 130 kilometers (81 miles) above Earth.

Two of the shuttle's small motors were turned on for just under three minutes at 2019 GMT in order to slow Endeavour down to 328 kilometers (204 miles) per hour from its previous speed of 28,000 kilometers (17,000 miles) per hour as it orbited the Earth.

The arrival of the shuttle was heralded by a double sonic boom, while shortly after touchdown Endeavour deployed a red and white parachute to slow the craft to a halt, live images from NASA Television showed.

Endeavour spent 12 days docked at the International Space Station (ISS) where its crew delivered 14.5 tonnes of equipment on a mission billed as an "extreme home improvement" to double the station's crew capacity from three to six.

The Endeavour crew delivered, among other facilities, two new sleeping quarters, two ovens and a refrigerator to the ISS.

Just after the Endeavour undocked Friday from the ISS, a final inspection of its nose cap and wing leading edge panels was conducted by camera and laser device.

NASA's Mission Management Team then cleared Endeavour's thermal shield for a safe entry and landing, said the team's chairman, LeRoy Cain.

Endeavour spent 16 days in orbit, 12 of them docked at the ISS, and traveled a total of 10.6 million kilometers (6.6 million miles).

During their mission, Endeavour astronauts took four space walks to successfully repair a jammed joint on one of three rotating solar panels that harvest energy for the orbiting station.

Technical problems with a new piece of equipment that recycles waste water caused NASA to extend the mission by a day.

The 250-million-dollar device was an essential part of the shuttle mission to double the station's accommodation capacity.

Crew members ran three successful cycles on the unit, designed to process urine, perspiration and bath water into drinkable water.

Once up and running, the unit will be able to recycle the station's 6.8 tons of waste water produced each year, eliminating the need to regularly ferry vast quantities of water to the space station.

Samples of the drinking water produced by the machine were brought back to Earth for analysis.

The Endeavour mission is the last by a US space shuttle in 2008. The next shuttle flight is scheduled for February, with another mission to continue building the space station.

The ISS should be completed in 2010, also the target date for the retirement of the US fleet of three space shuttles.

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