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<title>TDRSK Launch Updates</title>
<link>http://www.nasa.gov/mission_pages/tdrsk/main/index.html</link>
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<title><![CDATA[Live Coverage Concludes]]></title>
<description><![CDATA[A new generation of NASA's Tracking and Data Relay Satellites began tonight at Cape Canaveral Air Force Station in Florida with the successful flight of an Atlas V rocket carrying the TDRS-K spacecraft. <br/><br/>"We have a successful spacecraft separation; we've just confirmed that by telemetry," said NASA Launch Manager Tim Dunn. "There are a lot of happy folks out there and a customer that's quite thrilled right now to have a healthy satellite on orbit."<br/><br/>This concludes live coverage on NASA's Launch Blog, but for further updates regarding the spacecraft's state of health and mission status, visit the TDRS website by copying the following address into your browser: http://www.nasa.gov/tdrs.]]></description>
<pubDate>Thu, 31 Jan 2013 03:44:56 GMT</pubDate>
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<title><![CDATA[TDRS-K Released!]]></title>
<description><![CDATA[Spacecraft separation! One hour and 46 minutes after a spectacular launch from Cape Canaveral Air Force Station in Florida, the TDRS-K spacecraft is flying solo after its release from the Centaur upper stage.]]></description>
<pubDate>Thu, 31 Jan 2013 03:34:22 GMT</pubDate>
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<title><![CDATA[Engine Cutoff]]></title>
<description><![CDATA[The Centaur has completed its final burn and is positioning for release of the TDRS-K spacecraft.]]></description>
<pubDate>Thu, 31 Jan 2013 03:30:36 GMT</pubDate>
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<title><![CDATA[Centaur Begins Second Burn]]></title>
<description><![CDATA[The Centaur's RL10 engine is burning now in one final push to deliver TDRS-K to its place in orbit. This is a brief burn, scheduled to last just under a minute.]]></description>
<pubDate>Thu, 31 Jan 2013 03:28:36 GMT</pubDate>
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<title><![CDATA[Three Minutes Left in Coast Phase]]></title>
<description><![CDATA[There are three minutes remaining in the coast phase. The Centaur is reorienting prior to its second, and final, burn.]]></description>
<pubDate>Thu, 31 Jan 2013 03:25:57 GMT</pubDate>
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<title><![CDATA[Centaur, TDRS-K Remain in Coast Phase]]></title>
<description><![CDATA[NASA and United Launch Alliance personnel are monitoring the progress of the TDRS-K spacecraft still joined to the Centaur upper stage as the pair continues a one-hour, 22-minute coast phase. The Centaur's RL10 engine will then restart for one last, short burn to position TDRS-K for release.]]></description>
<pubDate>Thu, 31 Jan 2013 03:16:25 GMT</pubDate>
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<title><![CDATA[Blog to Take a Short Break]]></title>
<description><![CDATA[With the coast phase under way, NASA's Launch Blog will take a break from live coverage. We'll be back before the end of the coast phase, or earlier, if conditions warrant.]]></description>
<pubDate>Thu, 31 Jan 2013 02:13:27 GMT</pubDate>
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<title><![CDATA[Centaur First Main Engine Cutoff]]></title>
<description><![CDATA[A successful first burn for the Centaur stage ended on time with engine cutoff. Centaur and TDRS-K are in a highly elliptical, 113-by-13,402-mile orbit for this one-hour, 22-minute coast phase. The coast phase ends with the final burn of the Centaur engine to deploy TDRS-K.<br/><br/>The TDRS-K spacecraft will be released from the Centaur into a transfer orbit; it will take another 10 days to reach its proper orbit. It will take another three months, approximately, to test and calibrate the spacecraft. Once it passes an acceptance review, it's ready to move to its preferred location.]]></description>
<pubDate>Thu, 31 Jan 2013 02:06:53 GMT</pubDate>
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<title><![CDATA[Centaur First Burn Continues]]></title>
<description><![CDATA[Now 13 minutes into flight, the Centaur upper stage's RL10 engine continues its burn. Five minutes remaining in this burn, the first of two for the Centaur. Engine performance still is looking good.]]></description>
<pubDate>Thu, 31 Jan 2013 02:02:01 GMT</pubDate>
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<title><![CDATA[Flight Continues Smoothly]]></title>
<description><![CDATA[The Centaur upper stage propelling the TDRS-K spacecraft has passed 161 miles in altitude, 1,012 miles downrange from the launch site, traveling 12,644 miles per hour.]]></description>
<pubDate>Thu, 31 Jan 2013 01:57:12 GMT</pubDate>
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<title><![CDATA[Payload Fairing Jettisoned]]></title>
<description><![CDATA[The payload fairing enclosing the TDRS-K spacecraft jettisoned on time. Meanwhile, the Centaur's engine continues its burn, scheduled to last nearly 14 minutes. This is the first of two burns for the Centaur engine during tonight's ascent.]]></description>
<pubDate>Thu, 31 Jan 2013 01:52:50 GMT</pubDate>
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<title><![CDATA[Booster Engine Cutoff and Separation; Centaur Takes Over]]></title>
<description><![CDATA[The Atlas V main engine ended its burn right on time, followed by separation of the booster stage. The Centaur's RL10 engine is now burning.]]></description>
<pubDate>Thu, 31 Jan 2013 01:52:27 GMT</pubDate>
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<title><![CDATA[Atlas V Performing Well]]></title>
<description><![CDATA[The Atlas V is tracking right down the middle of the range. Booster performance is nominal. Now three minutes into flight.]]></description>
<pubDate>Thu, 31 Jan 2013 01:51:20 GMT</pubDate>
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<title><![CDATA[Atlas V Reaches Max Q]]></title>
<description><![CDATA[The Atlas V is flying through the area of peak aerodynamic pressure known as max Q.]]></description>
<pubDate>Thu, 31 Jan 2013 01:49:18 GMT</pubDate>
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<title><![CDATA[Liftoff!]]></title>
<description><![CDATA[Ignition and liftoff of the United Launch Alliance Atlas V rocket carrying the TDRS-K spacecraft on a mission to join the Tracking and Data Relay Satellite System! The vehicle is speeding up and away from Space Launch Complex 41, lighting the darkened skies across Cape Canaveral Air Force Station and nearby Kennedy Space Center. The avionics system on board the Centaur upper stage is guiding the rocket's flight.]]></description>
<pubDate>Thu, 31 Jan 2013 01:48:06 GMT</pubDate>
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<title><![CDATA[T-2 Minutes and Counting]]></title>
<description><![CDATA[Two minutes until launch. The vehicle is on internal power.]]></description>
<pubDate>Thu, 31 Jan 2013 01:46:17 GMT</pubDate>
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<title><![CDATA[T-4 Minutes and Counting]]></title>
<description><![CDATA[We're four minutes away from liftoff of the Atlas V rocket with NASA's TDRS-K spacecraft.]]></description>
<pubDate>Thu, 31 Jan 2013 01:44:04 GMT</pubDate>
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<title><![CDATA[Launch Conductor 'Go' for Launch]]></title>
<description><![CDATA[Launch Conductor Ed Kitta just performed his poll and has given the go-ahead for launch.<br/><br/>The TDRS-K spacecraft is on internal power.]]></description>
<pubDate>Thu, 31 Jan 2013 01:42:51 GMT</pubDate>
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<title><![CDATA[NASA Team 'Go' For Launch]]></title>
<description><![CDATA[NASA Launch Manager Tim Dunn has polled his team of controllers and given the "go" for liftoff at 8:48 p.m.]]></description>
<pubDate>Thu, 31 Jan 2013 01:37:14 GMT</pubDate>
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<title><![CDATA[Weather Remains Favorable; Centaur Liquid Hydrogen Loading Complete]]></title>
<description><![CDATA[Launch Weather Officer Clay Flinn just briefed the launch team on tonight's weather status. Weather is now 90 percent "go" and the team is pressing on toward liftoff at 8:48 p.m. Centaur liquid hydrogen loading is complete.]]></description>
<pubDate>Thu, 31 Jan 2013 01:25:49 GMT</pubDate>
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<title><![CDATA[T-4 min and holding]]></title>
<description><![CDATA[The countdown has entered a built-in hold at T-4 minutes. This is the final planned hold in tonight's countdown and is scheduled to last 25 minutes. Stay tuned for NASA Launch Manager Tim Dunn and Launch Conductor Ed Kitta of United Launch Alliance to perform their final launch readiness polls later in the hold.<br/><br/>Tanking operations are complete at Space Launch Complex 41. The Atlas booster is filled with 48,860 gallons of liquid oxygen and 25,540 gallons of RP-1 fuel. The Centaur upper stage is loaded with 4,150 gallons of liquid oxygen and 12,680 gallons of liquid hydrogen.<br/><br/>Launch remains targeted for 8:48 p.m.]]></description>
<pubDate>Thu, 31 Jan 2013 01:19:10 GMT</pubDate>
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<title><![CDATA[Atlas Liquid Oxygen Nears Flight Level]]></title>
<description><![CDATA[Atlas liquid oxygen has reached 99.6 percent. On the Centaur upper stage, liquid oxygen remains at flight level and liquid hydrogen topping continues.]]></description>
<pubDate>Thu, 31 Jan 2013 01:07:30 GMT</pubDate>
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<title><![CDATA[Atlas Tanking Update]]></title>
<description><![CDATA[Liquid oxygen continues to flow into the Atlas booster rocket and both liquid oxygen and liquid hydrogen have been loaded into the Centaur upper stage. All systems remain "go" for liftoff of the United Launch Alliance Atlas V and NASA's TDRS-K spacecraft at 8:48 p.m. EST. When countdown clocks reach the T-4 minute mark, they will pause for a 25-minute built-in hold.]]></description>
<pubDate>Thu, 31 Jan 2013 01:00:29 GMT</pubDate>
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<title><![CDATA[Launch Window Opens in One Hour]]></title>
<description><![CDATA[One hour remains until the 8:48 p.m. opening of the 40-minute launch window.]]></description>
<pubDate>Thu, 31 Jan 2013 00:48:47 GMT</pubDate>
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<title><![CDATA[Flight Termination System Check]]></title>
<description><![CDATA[The Eastern Range is testing the communications loop between the Atlas V rocket and range antennas. This system would allow the range to destroy the vehicle if it strayed off course.<br/><br/>Meanwhile, the Centaur's liquid hydrogen tank has been filled to 97 percent and will now be topped off.]]></description>
<pubDate>Thu, 31 Jan 2013 00:45:14 GMT</pubDate>
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<title><![CDATA[Weather Still Favorable; Centaur Liquid Hydrogen at 80 Percent]]></title>
<description><![CDATA[Weather remains 70 percent favorable for launch during a 40-minute window that opens at 8:48 p.m. EST. A frontal boundary is expected to stay to the north of the pad throughout the countdown and be near Jacksonville at the time of liftoff. There is no significant threat of lightning or rain showers. The main concern is for winds at the launch pad exceeding the limit. Weather currently is "green."<br/><br/>Centaur liquid hydrogen loading just passed 80 percent of its total, 12,680 gallons.]]></description>
<pubDate>Thu, 31 Jan 2013 00:40:41 GMT</pubDate>
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<title><![CDATA[Atlas/Centaur Tanking Update]]></title>
<description><![CDATA[Both the Atlas V liquid oxygen level and the Centaur liquid hydrogen level have passed the 30 percent mark as fueling continues.]]></description>
<pubDate>Thu, 31 Jan 2013 00:34:56 GMT</pubDate>
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<title><![CDATA[About the Atlas V]]></title>
<description><![CDATA[The 192-foot-tall Atlas V 401 rocket that will boost TDRS-K into space rolled from Space Launch Complex 41's Vertical Integration Facility to the launch pad Tuesday morning. The booster stage's RD-180 main engine ignites at liftoff. Above the booster stage is the Centaur upper stage with its RL10 engine that will burn twice during tonight's launch in order to place the TDRS-K spacecraft into its orbit. The rocket is topped by a 14-foot diameter extended payload fairing, or EPF, which protects the TDRS-K spacecraft through the first minutes of ascent.]]></description>
<pubDate>Thu, 31 Jan 2013 00:28:45 GMT</pubDate>
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<title><![CDATA[Atlas Tanking Update]]></title>
<description><![CDATA[Liquid oxygen is flowing into the Atlas V booster stage. In addition to liquid oxygen, the rocket's main engine uses 25,540 gallons of RP-1, a refined kerosene loaded Tuesday. Managers and controllers in the Atlas Spaceflight Operations Center a few miles south of the launch pad have cleared a potential issue that was noted when liquid oxygen began loading into the Atlas rocket. There was an indication that two fill and drain valves failed to close, but the issue has been resoloved and the tanking is proceeding normally.]]></description>
<pubDate>Thu, 31 Jan 2013 00:16:22 GMT</pubDate>
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<title><![CDATA[The TDRS System: NASA's Space Network]]></title>
<description><![CDATA[Since 1983, NASA's Tracking and Data Relay Satellite System -- also known as the Space Network -- has provided continuous, high-bandwidth, reliable communications to some of the agency's most well-known missions, including the International Space Station, the Hubble Space Telescope and a variety of science satellites. From their vantage points in geosynchronous Earth orbit, TDRS satellites stay in contact with primary ground facilities at the White Sands Complex in New Mexico and an additional station in Guam. <br/><br/>The first satellite in the TDRS constellation launched in 1983 aboard space shuttle Challenger. A total of nine TDRS spacecraft have been deployed, with seven still operating. The addition of the TDRS-K spacecraft will help ensure the continuity of this mission-critical network.]]></description>
<pubDate>Thu, 31 Jan 2013 00:08:24 GMT</pubDate>
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<title><![CDATA[TDRS-K Spacecraft in Launch Configuration]]></title>
<description><![CDATA[The TDRS-K spacecraft is in launch configuration now as Atlas V fueling operations continue. Thirty percent of the Centaur's complement of liquid oxygen is on board and the team is preparing to load 48,860 gallons of liquid oxygen into the Atlas booster stage.]]></description>
<pubDate>Wed, 30 Jan 2013 23:50:02 GMT</pubDate>
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<title><![CDATA[Centaur Liquid Oxygen Loading Begins]]></title>
<description><![CDATA[At Space Launch Complex 41, operations are under way to load 4,150 gallons of liquid oxygen into the Centaur upper stage.<br/><br/>The countdown is going well and launch remains scheduled for 8:48 p.m. at the start of a 40-minute window.]]></description>
<pubDate>Wed, 30 Jan 2013 23:42:54 GMT</pubDate>
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<title><![CDATA[TDRS-K: Beginning a New Generation]]></title>
<description><![CDATA[Built by Boeing Space Systems in El Segundo, Calif., the nearly 4,000-pound TDRS-K spacecraft is the first of three in the next generation of satellites in the Tracking and Data Relay Satellite System. The next two, TDRS-L and -M, will be built on the same type of spacecraft bus as TDRS-K. The bus supports two high-performance solar array wings that will stretch more than 65 feet when deployed. On board each spacecraft are a range of antennas capable of communicating with current and future spacecraft.<br/><br/>The TDRS-K satellite is destined for a slot in geosynchronous orbit 22,300 miles above the Earth's surface.]]></description>
<pubDate>Wed, 30 Jan 2013 23:32:45 GMT</pubDate>
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<title><![CDATA[T-2 Hours and Counting]]></title>
<description><![CDATA[The countdown has resumed at the T-2 hour mark and preparations are beginning for fueling procedures, or "tanking," starting with chilldown of the transfer lines to adjust the hardware to the cold propellant temperatures.]]></description>
<pubDate>Wed, 30 Jan 2013 23:27:06 GMT</pubDate>
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<title><![CDATA[TDRS-K Spacecraft Awaiting Liftoff Aboard Atlas V Rocket]]></title>
<description><![CDATA[The countdown is on at Cape Canaveral Air Force Station in Florida, where NASA's Tracking and Data Relay Satellite-K awaits liftoff on the first mission of its kind in more than a decade. Better known as TDRS-K, the spacecraft is the latest addition to NASA's Tracking and Data Relay Satellite System, a critically important network providing communications between Earth and many of the agency's assets in orbit, including the International Space Station. <br/><br/>Tonight's 40-minute window opens at 8:48 p.m. The two-stage United Launch Alliance Atlas V 401 rocket that will carry TDRS-K into orbit is nearly ready for fueling at Space Launch Complex 41. Countdown clocks are holding at T-2 hours. <br/><br/>Launch Weather Officer Clay Flinn of the U.S. Air Force's 45th Weather Squadron predicts a 70 percent chance of acceptable conditions for launch tonight. Launch personnel are closely monitoring winds at the launch site.<br/><br/>Launch managers and controllers are conducting tonight's countdown from the Atlas Spaceflight Operations Center, a few miles south of Space Launch Complex 41. The blog originates from the Launch Vehicle Data Center in Hangar AE, also at Cape Canaveral Air Force Station. Stay with us for updates as the countdown continues.]]></description>
<pubDate>Wed, 30 Jan 2013 23:16:56 GMT</pubDate>
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<title><![CDATA[Join us for Live Countdown Coverage]]></title>
<description><![CDATA[Return to this page on launch day for updates from Cape Canaveral Air Force Station in Florida. Live countdown coverage begins Jan. 30 at 6:15 p.m. EST.]]></description>
<pubDate>Wed, 23 Jan 2013 20:05:45 GMT</pubDate>
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