Автор Salo, 13.01.2010 18:22:22
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ЦитатаFeb. 9 Atlas 5 • SDOLaunch window: 1530-1630 GMT (10:30-11:30 a.m. EST)Launch site: SLC-41, Cape Canaveral Air Force Station, FloridaThe United Launch Alliance Atlas 5 rocket will launch NASA's Solar Dynamics Observatory. SDO will be the first mission for the space agency's Living With a Star Program. The rocket will fly in the 401 vehicle configuration with a four-meter fairing, no solid rocket boosters and a single-engine Centaur upper stage. Delayed from December 2008. Moved up from Jan. 26, 2010 to take former Mars Science Laboratory launch slot. Delayed from October, Dec. 4 and Feb. 3. [Jan. 8]
ЦитатаИнтересна орбита SDO: квазистационарная (102°W) с наклонением 28.5°.
ЦитатаThursday, January 21, 2010SDO placed in fairing, on track for February launch NASA's Solar Dynamics Observatory spacecraft is being covered for flight today in Titusville, and officials believe the mission is still on track for a Feb. 9 launch.United Launch Alliance is analyzing the Russian-built RD-180 engine on its Atlas V rocket after a Russian rocket experienced problems that prompted a review. NASA spokesman George Diller said no problems have been found with the Atlas V scheduled to blast off with the SDO spacecraft at 10:30 a.m. Feb. 9 from Cape Canaveral Air Force Station's Launch Complex 41. But a process is underway to determine if the RD-180 engine powering the rocket's first stage has a common parts with the other Russian engine, and if so that they are cleared of any concerns. "It's a standard procedure you have to go through," said Diller. "We've got enough confidence to go ahead and encapsulate the spacecraft and prepare to go to the launch pad." "We're still on track," he said. Today, the payload fairing is being fitted around the SDO spacecraft at the Astrotech Space Operations facility in Titusville. SDO is scheduled to be delivered to the launch pad Jan. 26, and a flight readiness review is planned Feb. 3. NASA and ULA on Wednesday completed a successful wet dress rehearsal, fueling the rocket's core booster and Centaur upper stage and running through a mock countdown. The rocket will be rolled back to its Vertical Integration Facility hangar this afternoon. The SDO mission -- planned two days after the launch of shuttle Endeavour from Kennedy Space Center -- will be the Cape's first flight this year.
ЦитатаFeb. 10 Atlas 5 • SDOLaunch window: 1526-1626 GMT (10:26-11:26 a.m. EST)Launch site: SLC-41, Cape Canaveral Air Force Station, FloridaThe United Launch Alliance Atlas 5 rocket will launch NASA's Solar Dynamics Observatory. SDO will be the first mission for the space agency's Living With a Star Program. The rocket will fly in the 401 vehicle configuration with a four-meter fairing, no solid rocket boosters and a single-engine Centaur upper stage. Delayed from December 2008. Moved up from Jan. 26, 2010 to take former Mars Science Laboratory launch slot. Delayed from October, Dec. 4, Feb. 3 and Feb. 9. [Feb. 7]
Цитата1412 GMT (9:12 a.m. EST)The chilldown conditioning of liquid hydrogen propellant lines at Complex 41 is starting to prepare the plumbing for transferring the Minus-423 degree F fuel into the rocket. The Centaur holds about 13,000 gallons of the cryogenic propellant.1411 GMT (9:11 a.m. EST)The Centaur liquid oxygen tank is 75 percent full now.1410 GMT (9:10 a.m. EST)The Centaur engine chilldown sequence is being initiated.1407 GMT (9:07 a.m. EST)Half of the Centaur liquid oxygen tank has been filled so far.
Цитата1512 GMT (10:12 a.m. EST)T-minus 4 minutes and holding. The countdown has entered the planned 10-minute hold to give the launch team a chance to review all systems before pressing ahead with liftoff.But the ground winds at Complex 41 remain out of limits. So the clocks will stay stopped at this point in the countdown until the weather improves.Today's launch opportunity stretches from 10:26 to 11:26 a.m. EST. There is hope the winds would ease later in the window, but it remains to be seen if that will happen.1511 GMT (10:11 a.m. EST)T-minus 5 minutes. Standing by to go into the final built-in hold.1507 GMT (10:07 a.m. EST)A peak wind of 32 knots was just recorded at the launch pad. The limit is the low 20s, the exact constraint depends on the specific direction.
Цитата1529 GMT (10:29 a.m. EST)An additional 10 minutes have been added to the hold. That puts launch time no earlier than 10:46 a.m. But the winds remain "no go."1520 GMT (10:20 a.m. EST)HOLD EXTENDED. Officially, launch has been delayed at least 10 minutes due to the winds.
Цитата1531 GMT (10:31 a.m. EST)NEW LAUNCH TIME. Liftoff now pushed back to 10:56 a.m., if the winds subside.