GPS IIF-2 = Delta IV-M+(4,2)- 16.07.11 10:41 ЛМВ -Canaveral

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http://msdb.gsfc.nasa.gov/launches.php

7/14/2011,0651-0710Z   GPS 2F-5      Delta IV

[Salo]

http://space.skyrocket.de/doc_sdat/navstar-2f.htm

Navstar-2F (GPS-2F)[/size]
 

Navstar-2F [Boeing]

Navstar-2F (Navigation System using Timing And Ranging) or GPS-2F satellites are the fourth evolution stage of the second generation of the Navstar GPS satellites. Improvements included an extended design life of 12 years, faster processors with more memory, and a new civil signal on a third frequency. The first Block-IIF satellite is scheduled to launch in 2006

Boeing was contracted with options for up to 33 Block-IIF satellites in 1996, but in 2001 the contract was reduced 12 Block-IIF satellites. In July 2006, satellites 10, 11 and 12 were contracted.

The Navstar-2F satellites do not need to carry an apogee kick motor, in contrast to the earlier generations, as the launch vehicles provide direct insertion into the GPS orbit. Originally the Delta-4M version was to be used for the Delta launches, but a mass growth of the satellites required a switch to the more powerful Delta-4M+(4,2) version. For Atlas launches, the Atlas-5(401) version is used.
Nation:    USA
Type / Application:    Navigation
Operator:    USAF
Contractors:    Boeing
Equipment:    ?
Configuration:    3-Axis stabilized, 2 solar arrays
Propulsion:    ?
Lifetime:    15 years
Mass:    1630 kg
Orbit:    20200 km x 20200 km, 55.0°

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http://www.spaceflightnow.com/tracking/index.html

July 14     Delta 4  •  GPS 2F-2
Launch window: 0649-0708 GMT (2:49-3:08 a.m. EDT)
Launch site: SLC-37B, Cape Canaveral Air Force Station, Florida

The United Launch Alliance Delta 4 rocket will deploy the Air Force's second Block 2F navigation satellite for the Global Positioning System. The rocket will fly in the Medium+ (4,2) configuration with two solid rocket boosters. Delayed from June 23. [June 26]

http://www.ulalaunch.com/site/pages/Launch.shtml#/19/

[Salo]

http://www.spaceflightnow.com/delta/d355/110627payload.html

Next GPS satellite moves to Cape Canaveral launch pad[/size]
BY JUSTIN RAY
SPACEFLIGHT NOW
Posted: June 27, 2011

A Global Positioning System satellite has been loaded aboard its ride to space, arriving Monday at Cape Canaveral's Complex 37 for mounting atop the United Launch Alliance Delta 4 rocket.


File image shows satellite payload pulling up to Delta's pad. Credit: NASA
 
Liftoff of the GPS 2F-2 spacecraft is scheduled for July 14 during a 19-minute window extending from 2:49 to 3:08 a.m. EDT (0649-0708 GMT).

The launch is timed to deliver the satellite into the GPS constellation to replace a 20-year craft that has long exceeded its expected lifespan.

GPS satellites fly about 11,000 miles above the planet and emit continuous navigation signals that allow users to find their precise position in latitude, longitude and altitude and determine time. Originally built for the U.S. military, the GPS service has spread across the world as an indispensable commercial utility.

The Air Force is in the midst of further upgrading the GPS network by deploying a new breed of satellite that features improved accuracy, enhanced internal atomic clocks, better anti-jam resistance, a civil signal for commercial aviation, a longer design life and reprogrammable onboard processors to evolve with future needs.


The GPS 2F-2 satellite is pictured here at the El Segundo satellite integration and test complex earlier this year. Credit: The Boeing Company
 
A dozen of these new satellites in the Block 2F series are being built by The Boeing Company. The first was successfully launched from the Cape on May 27, 2010.

GPS 2F-2 was shipped April 19 from Boeing's manufacturing facility in El Segundo, Calif., to the Florida spaceport in a C-17 Globemaster III airlifter. After arriving at the Skid Strip, it was taken to Area 59 were GPS spacecraft undergo their pre-flight preps.

Launch base testing, the filling of maneuvering propellants and encapsulation within the two-piece rocket nose cone were among the activities accomplished at the satellite's cleanroom hangar.

A motorized trailer then carried the 3,400-pound satellite up the road to Complex 37 early Monday. It was positioned on the oceanside of the mobile service gantry and hoisted into the pad tower for bolting to the rocket's second stage.


A file image shows satellite payload ready for lifting into the Delta 4 rocket's launch pad. Credit: NASA
 
Today's GPS constellation is comprised of 31 operational satellites, including 11 Block 2A's made by Boeing, 12 Block 2R's and seven 2R-Modernized spacecraft built by Lockheed Martin, and Boeing's first Block 2F.

Ground controllers expect to have the GPS 2F-2 satellite checked out and ready for use about 30 days after launch, the Air Force says.

The new spacecraft will occupy the Plane D, Slot 2A location of the navigation network, which is divided into six orbital groupings with multiple satellites flying in each.

The craft takes over the position held by the GPS 2A-11 satellite, which was launched by a Delta 2 rocket from Cape Canaveral on July 3, 1991.

Remarkably, that aging bird continues to function despite the loss of some redundant systems and far outlasting its design life. It will be relocated within the same orbital plane as a reinforcement while living out its remaining usefulness.

The Air Force recently completed an 18-month shuffling of six GPS satellites in the constellation to achieve "the most optimal geometry in its 42-year history," according to the service. The effort will boost signal reception to users in difficult terrains and the system's overall accuracy worldwide.[/size]

[Salo]

http://www.aviationweek.com/aw/generic/story_channel.jsp?channel=space&id=news/asd/2011/07/07/07.xml&headline=Next%20GPS%20Satellite%20Poised%20For%20Launch

Next GPS Satellite Poised For Launch[/size]

Jul 8, 2011
 
By Amy Butler

U.S. Air Force officials are preparing to launch the second Boeing GPS IIF satellite on July 14.

The launch window opens at 2:49 a.m. EDT at Cape Canaveral, says Col. Christopher Warack, space systems program manager at the Space and Missile Systems Center near Los Angeles.

The satellite, SVN-63, will be boosted by a Delta IV using two solid-rocket motor strap-on boosters as well as a 4-meter payload faring. The GPS IIF satellite, made by Boeing, will be lifted 11,000 mi. into a circular orbit after three upper-stage burns, says Jim Sponnick, vice president of mission operations at United Launch Alliance.

The first GPS IIF satellite was launched in May 2010 and is providing "excellent atomic clock performance," Warack says. It is one of 31 GPS satellites of various configurations transmitting precision timing and location signals to users today.

Though the first GPS IIF satellite is operational, its M-code (strong, military-specific), L2C and L5 signals are still being worked on and the M-code signal is now switched off, according to Warack. "There is no question whether the satellite will meet its requirements," Warack said during a teleconference with reporters July 5. The issue has been continuing to explore the amount of margin in the power level for the M-code signal, he says.

The receivers needed to use the new M-code have not yet been fielded, and the capability will not be added until elements of the new Raytheon-built GPS operational control segment are fielded in 2016.

Warack says the Air Force is experimenting with different power levels for the M-code signals to "make sure we are operating the satellites optimally."

The government notified users in April that the M-code would be switched off.

An industry official says Boeing has developed optimized transmitter settings to address the signal issue.

The second GPS IIF was built by Boeing at a loss owing to manufacturing problems. The Air Force is expected to buy a total of 12 satellites, and Boeing has established a pulse production line to more efficiently build the spacecraft.

Meanwhile, Lockheed Martin has completed its systems design review for the GPS IIIB program, the second increment of next-generation satellites in the constellation. Lockheed is developing the GPS III family, with the first IIIA slated for launch in 2014[/size].

[Sharicoff]

Перенос на 15 июля.

[Salo]

http://www.spaceflightnow.com/delta/d355/status.html

TUESDAY, JULY 12, 2011
The Delta 4 rocket launch carrying the next Global Positioning System satellite into orbit from Cape Canaveral has been delayed by 24 hours.

Originally planned for liftoff Thursday, the mission has been postponed to Friday morning at 2:45 a.m. EDT (0645 GMT). A reason for the rescheduling was not immediately announced.[/size]

[instml]

July 16     Delta 4   GPS 2F-2

Launch window: 0641-0700 GMT (2:41-3:00 a.m. EDT)
Launch site: SLC-37B, Cape Canaveral Air Force Station, Florida

The United Launch Alliance Delta 4 rocket will deploy the Air Force's second Block 2F navigation satellite for the Global Positioning System. The rocket will fly in the Medium+ (4,2) configuration with two solid rocket boosters. Delayed from June 23 and July 14. Scrubbed from July 15 due to weather. See our Mission Status Center.

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Трансляция:
http://www.ulalaunch.com/site/pages/ConferenceRoom_Webcast.shtml

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http://www.spaceflightnow.com/delta/d355/payload/

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http://www.spaceflightnow.com/delta/d355/110714/







http://www.spaceflightnow.com/delta/d355/mst/

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http://www.spaceflightnow.com/delta/d355/status.html

0123 GMT (9:23 p.m. EDT Fri.)
The first stage liquid oxygen chilldown is complete. "Slow-fill" mode is beginning to load a small percentage of the tank. The process then speeds up to the "fast-fill" mode until the tank is nearly full.

0115 GMT (9:15 p.m. EDT Fri.)
First stage liquid hydrogen tanking operation is switching from "slow-fill" to "fast-fill" mode.

0100 GMT (9:00 p.m. EDT Fri.)
And now the chilldown of Delta's first stage liquid oxygen system is starting. This preps the tank and pumping to guard against shock when the supercold oxidizer begins flowing into the rocket a short time from now.

0059 GMT (8:59 p.m. EDT Fri.)
Liquid hydrogen flow to the first stage is confirmed. Some 110,000 gallons of LH2 will fill the rocket's tank.

0055 GMT (8:55 p.m. EDT Fri.)
The cold gas chilldown conditioning of the liquid hydrogen system has been accomplished. Liquid hydrogen propellant will begin to flow into the first stage in "slow-fill" mode. That is sped up to "fast-fill" after a small portion of the tank is loaded.

Chilled to Minus-423 degrees Fahrenheit, the liquid hydrogen will be consumed by the RS-68 main engine along with liquid oxygen during the first four minutes of the launch.

0029 GMT (8:29 p.m. EDT Fri.)
And fueling officially has begun. The hydrogen system's cold gas chilldown conditioning is underway.

0027 GMT (8:27 p.m. EDT Fri.)
A "go" has been given to start the cold gas chilldown conditioning of the first stage liquid hydrogen system. This is the precursor to actually filling the vehicle with propellant.

0011 GMT (8:11 p.m. EDT Fri.)
T-minus 6 hours, 15 minutes and counting! The Terminal Countdown begins now for tonight's flight of the United Launch Alliance Delta 4 rocket with the Global Positioning System 2F-2 satellite.

The count has a planned built-in hold at T-minus 5 minutes lasting some 15 minutes, leading to liftoff at 2:41 a.m. EDT (0641 GMT).

Technicians have finished all hands-on work at the launch pad and Complex 37 has been cleared of personnel in advance of fueling the rocket's two stages this evening. Pad systems and equipment stand ready for fueling activities, which should kick off shortly.

0005 GMT (8:05 p.m. EDT)
No technical issues are being worked in the countdown and the current weather conditions are acceptable for fueling to start on schedule around 8:30 p.m.

FRIDAY, JULY 15, 2011
2357 GMT (7:57 p.m. EDT)
The launch team has been polled to verify all consoles are manned and ready to begin the Terminal Countdown when this hold ends at 8:11 p.m. Officials are pressing onward with optimism the weather will improve over the next few hours.

2347 GMT (7:47 p.m. EDT)
Stormy weather is blanketing Central Florida tonight, bringing rain, thunder and lightning to the Space Coast. At the present time, a few of the launch commit criteria weather rules are "red" due to the cloud cover and electrical potential. But for the overnight launch time at 2:41 a.m. EDT, forecasters still predict a 60 percent chance of acceptable conditions then.

2311 GMT (7:11 p.m. EDT)
T-minus 6 hours, 15 minutes and holding. The countdown has entered a planned 60-minute built-in hold, a pre-planned pause designed to give the team time to catch up on any work that could be running behind schedule. Once the clocks resume ticking at 8:11 p.m. EDT, the Terminal Countdown phase of tonight's launch operation will begin.

2245 GMT (6:45 p.m. EDT)
Check out today's gantry rollback photo gallery taken by ULA's Pat Corkery.

1640 GMT (12:40 p.m. EDT)
The 330-foot tall mobile service tower has been retracted from the Delta 4 rocket at Cape Canaveral's pad 37B for tonight's launch that will place the GPS 2F-2 satellite into Earth orbit.

The wheeled structure just moved along rail tracks to its launch position about the length of a football field away from the rocket. The 9-million pound tower shielded the Delta from the elements during the its stay on the pad, provided workers 360-degree access to the various areas on the vehicle and was used to attach the strap-on solid motors and the payload during the launch campaign. The tower is 90-feet wide and 40-feet deep.

Crews will spend the next couple of hours securing the complex for launch before leaving the danger area around the pad. All workers must be clear of the area for the start of hazardous operations in the countdown, which include fueling the vehicle later tonight.

The Terminal Countdown will begin ticking at 8:11 p.m. EDT, leading to the multi-hour process of loading the Delta 4's Common Booster Core first stage and the second stage with supercold liquid oxygen and liquid hydrogen propellants.

Testing of communications links between the rocket and Air Force Eastern Range will occur after fueling is accomplished. Steering checks of the first stage RS-68 engine and second stage RL10 powerplant are on tap in the last hour of the count.

A 15-minute build-in hold is slated for T-minus 5 minutes, during which time teams will go through final polling to grant clearance to launch. The Delta 4 will transition to internal power as the count resumes, ordnance will be armed and the propellant tanks pressurized as clocks target the main engine ignition time at T-minus 5.5 seconds.

Liftoff remains scheduled for 2:41 a.m. EDT, the opening of a 19-minute window that extends to 3:00 a.m. EDT (0641-0700 GMT). [/size]

[Salo]

http://www.spaceflightnow.com/delta/d355/status.html

0640 GMT (2:40 a.m. EDT)
T-minus 12 seconds. Ignitors are armed and the residual hydrogen burnoff sparklers have fired beneath the main engine.

0640 GMT (2:40 a.m. EDT)
T-minus 22 seconds. The steering system for the twin solid rocket motor nozzles has been activated.

0640 GMT (2:40 a.m. EDT)
T-minus 30 seconds. Green board. All systems remain "go" for launch.

0640 GMT (2:40 a.m. EDT)
T-minus 35 seconds. Upper stage liquid hydrogen tank is confirmed at flight level.

0640 GMT (2:40 a.m. EDT)
T-minus 1 minute and counting. The ignition conditions for the RS-68 main engine are "go." The terminal countdown sequencer will take control at T-minus 8.5 seconds. Ignition of the RS-68 powerplant will follow at T-minus 5.5 seconds. The engine powers up to the 102 percent level of thrust for a computer-controlled checkout before liftoff.

0639 GMT (2:39 a.m. EDT)
T-minus 70 seconds. The Air Force-controlled Eastern Range has given its "go" for launch.

0639 GMT (2:39 a.m. EDT)
T-minus 75 seconds. Upper stage liquid oxygen tank has been secured at flight level.

0639 GMT (2:39 a.m. EDT)
T-minus 80 seconds. The liquid hydrogen fuel tank on the upper stage is being secured for launch.

0639 GMT (2:39 a.m. EDT)
T-minus 1 minute, 40 seconds. The first stage liquid hydrogen tank has reached flight level and pressure.

0639 GMT (2:39 a.m. EDT)
T-minus 2 minutes. The rocket's upper stage liquid oxygen tank is being secured.

0638 GMT (2:38 a.m. EDT)
T-minus 2 minutes, 35 seconds. The liquid oxygen tank in the first stage is confirmed at the proper level and pressure for flight.

0637 GMT (2:37 a.m. EDT)
T-minus 3 minutes, 15 seconds. Replenishment of liquid hydrogen and liquid oxygen to the Common Booster Core first stage is being secured in preparation to pressurize the tanks for launch.

0637 GMT (2:37 a.m. EDT)
T-minus 4 minutes and counting. Ordnance devices aboard the vehicle are being armed.

0636 GMT (2:36 a.m. EDT)
T-minus 4 minutes, 10 seconds. The systems of the first and upper stages of the Delta 4 rocket have switched from ground-fed power to internal batteries for launch.

0636 GMT (2:36 a.m. EDT)
T-minus 5 minutes and counting! The final phase of today's countdown has commenced for launch of the Delta 4 rocket carrying the GPS 2F-2 navigation satellite. Liftoff is set to occur at 2:41 a.m. EDT from pad 37B at Cape Canaveral Air Force Station.

0635 GMT (2:35 a.m. EDT)
The launch director has given permission to resume the count for liftoff at 2:41 a.m. EDT.

0634 GMT (2:34 a.m. EDT)
The GPS 2F-2 spacecraft atop the Delta 4 has switched from ground-fed power to its internal batteries for launch.

0633 GMT (2:33 a.m. EDT)
The launch pad swing arm retraction system pins are being pulled. The three arms will be rotated away from the Delta 4 rocket at liftoff.

0631 GMT (2:31 a.m. EDT)
The final readiness polls of the launch team and mission managers have been completed. No technical problems are being worked and all rocket, spacecraft and ground systems appear are "go" for liftoff at 2:41 a.m. EDT.

0629 GMT (2:29 a.m. EDT)
Standing by for the launch team readiness check for continuing the countdown.

0623 GMT (2:23 a.m. EDT)
A load relief file based on the upper level winds is being transmitted to the Delta 4 rocket's flight computer. This program informs the rocket on the wind conditions it can expect to see during ascent.

0621 GMT (2:21 a.m. EDT)
T-minus 5 minutes and holding. The countdown has entered a planned 15-minute hold. This pause is designed to give the launch team the opportunity to catch up on any work running behind schedule and verify all is in readiness for the final moments of the count. A series of management polls will be conducted during the hold to give approval to proceed with the launch.

A reminder that if you will be away from your computer but would like to receive occasional countdown updates, sign up for our Twitter feed to get text message updates on your cellphone. U.S. readers can also sign up from their phone by texting "follow spaceflightnow" to 40404. (Standard text messaging charges apply.)

0611 GMT (2:11 a.m. EDT)
About three-and-a-half hours after launch, the Delta 4 rocket will deliver its satellite payload directly to the GPS constellation's altitude 11,000 nautical miles high. Ground controllers expect to have the new bird checked out and ready for use in about 30 days, the Air Force says. The new GPS 2F-2 spacecraft will take over the Plane D, Slot 2A location of the network, replacing a satellite that just celebrated its 20th birthday.

0603 GMT (2:03 a.m. EDT)
The Air Force launch weather officer has given his final planned briefing to mission managers in the countdown. The chance of isolated showers has been removed from the forecast and the odds of acceptable launch conditions have improved to 90 percent.

0556 GMT (1:56 a.m. EDT)
T-minus 30 minutes and counting. The countdown is headed to the T-minus 5 minute point where a 15-minute hold is planned. Liftoff is targeted for 2:41 a.m., which is the opening of today's 19-minute launch window to reach the desired location within the GPS constellation for replacing an aging satellite.

0545 GMT (1:45 a.m. EDT)
The latest tweaks to the launch weather forecast now calls for a few clouds at 2,500 feet, scattered at 15,000 feet and a broken deck at 22,000 feet, isolated showers in the vicinity, north-northwesterly winds of 5 to 10 knots and a temperature of 77 degrees F.

The odds of acceptable launch weather remain at 80 percent.

0541 GMT (1:41 a.m. EDT)
The ULA launch team and management are guiding the countdown from the Delta Operations Center, located about 9,200 feet from the pad. The engineers overseeing the rocket and ground systems are located on the third floor and the Mission Directors Center room is on the fourth floor. Both rooms have a view of pad 37B and the Delta 4 rocket out their windows. Other rooms are also set up for engineering support.

The DOC was formerly built to support the Titan-Centaur program but was refurbished to support Delta 4.

0536 GMT (1:36 a.m. EDT)
The RS-68 first stage main engine spin start pressurization operation is starting.

0530 GMT (1:30 a.m. EDT)
No issues are being worked in the countdown and the weather continues to look good for launch at 2:41 a.m.

0520 GMT (1:20 a.m. EDT)
The safety system checks are underway at this point in the countdown.

0511 GMT (1:11 a.m. EDT)
The countdown is entering the final 90 minutes until the Delta 4 rocket launch from Cape Canaveral at 2:41 a.m. EDT. Here's a look at some stats about today's mission. This will be:

    The 355th Delta rocket launch since 1960
    The 17th Delta 4 rocket mission since 2002
    The 14th Delta 4 rocket launch from Cape Canaveral
    The 8th Medium+ 4,2 configuration to fly
    The 10th Delta 4 under the ULA banner
    The 3rd Delta 4 launch this year
    The 62nd GPS satellite to launch
    The 51st GPS launch on a Delta rocket
    The 2nd GPS Block 2F satellite

0509 GMT (1:09 a.m. EDT)
The RF checks are complete.

0503 GMT (1:03 a.m. EDT)
Radio frequency link checks between tracking facilities at the Cape and the launch vehicle are underway.

0500 GMT (1:00 a.m. EDT)
The flight slews and commanding tests for the vehicle steering systems are complete and satisfactory.

0457 GMT (12:57 a.m. EDT)
Now confirmation that propellant conditioning has been completed on the first stage as well. The Delta 4 rocket is fueled up and ready for today's launch.

0450 GMT (12:50 a.m. EDT)
Both cryo tanks on the upper stage have completed their pre-flight conditioning and remain in topping.

0445 GMT (12:45 a.m. EDT)
The launch team is kicking off the steering checks for the RS-68 main engine and RL10 upper stage engine, plus commanding tests with the solid rocket motors.

0440 GMT (12:40 a.m. EDT)
Check out this photo gallery showing the GPS 2F-2 satellite being encapsulated in the rocket's nose cone last month.

0436 GMT (12:36 a.m. EDT)
The thermal insulation inspections have been completed following fueling and there were no problems reported tonight.

0415 GMT (12:15 a.m. EDT)
The first stage liquid hydrogen tank has entered the topping phase after the post-fueling tests were accomplished. That puts all four cryogenic fuel tanks aboard the Delta 4 rocket in topping mode.

0412 GMT (12:12 a.m. EDT)
The newly revised weather forecast for the 2:41 a.m. EDT launch time now calls for a few low clouds, scattered mid-level clouds and a broken deck of high clouds, isolated showers in the vicinity, west-southwesterly winds of 5 to 10 knots and a temperature of 77 degrees F.

The odds of favorable weather have jumped to 80 percent.

0409 GMT (12:09 a.m. EDT)
Weather is "go" for launch! The evening storms have cleared away, current conditions are within limits for liftoff and the forecast is looking very positive now.

0408 GMT (12:08 a.m. EDT)
Engineers are conducting the standard evaluation of the Delta 4 rocket's thermal insulation following the loading of supercold propellants into the vehicle.

0403 GMT (12:03 a.m. EDT)
Upper stage liquid oxygen topping is beginning.

0401 GMT (12:01 a.m. EDT)
All is quiet at this point in the countdown with fueling operations nearly complete. The countdown remains on target for a liftoff at 2:41 a.m. EDT.

0344 GMT (11:44 p.m. EDT Fri.)
And the upper stage liquid oxygen filling has been completed, now heading into post-loading tests.

0343 GMT (11:43 p.m. EDT Fri.)
The first stage liquid oxygen system is conditioned for flight.

0341 GMT (11:41 p.m. EDT Fri.)
A reminder that if you will be away from your computer but would like to receive occasional countdown updates, sign up for our Twitter feed to get text message updates on your cellphone. U.S. readers can also sign up from their phone by texting "follow spaceflightnow" to 40404. (Standard text messaging charges apply.)

0325 GMT (11:25 p.m. EDT Fri.)
Weather forecasters believe the constraint for anvil clouds will be cleared perhaps in the next half-hour and that the conditions should be favorable for the remainder of the countdown to launch.

0304 GMT (11:04 p.m. EDT Fri.)
The topping mode is starting for the upper stage's liquid hydrogen tank.

0252 GMT (10:52 p.m. EDT Fri.)
The chilldown of the upper stage liquid oxygen system is reported complete, clearing the way for loading the rocket's tank with 4,500 gallons. This is the last of the rocket's four cryogenic supplies to be filled in today's countdown to launch.

0246 GMT (10:46 p.m. EDT Fri.)
Post-filling tests on the first stage liquid oxygen system are complete. The tank is now entering topping mode.

0242 GMT (10:42 p.m. EDT Fri.)
Fast-fill loading of the upper stage liquid hydrogen tank has been accomplished as fueling proceeds very smoothly this evening at Complex 37.

0238 GMT (10:38 p.m. EDT Fri.)
The "go" has been given for the upper stage liquid oxygen chilldown in advance of filling that tank.

0230 GMT (10:30 p.m. EDT Fri.)
Fast-filling of the first stage liquid hydrogen reservoir, the latest of the tanks to be loaded today, is wrapping up. After post-filling checks and valve tests, the tank will be placed in topping mode.

0222 GMT (10:22 p.m. EDT Fri.)
The first stage liquid oxygen loading just finished. The tank has been loaded with its supercold oxidizer that is chilled to Minus-298 degrees F. Topping will be completed as the count rolls on.

0220 GMT (10:20 p.m. EDT Fri.)
One of the two weather rules that had been "red" just went "green" as conditions get better. The field mills that measure the lightning potential were out of limits throughout the evening, but those readings are "go" for launch now.

0218 GMT (10:18 p.m. EDT Fri.)
The launch team is actively loading the upper stage's liquid hydrogen tank with 10,000 gallons of propellant for the RL10 engine.

0211 GMT (10:11 p.m. EDT Fri.)
Now four-and-a-half hours till launch. The Delta 4 rocket's Common Booster Core first stage and upper stage are being loaded with supercold liquid oxygen and liquid hydrogen.

Complex 37 has two giant sphere-shaped fuel tanks to store the cryogenic liquid oxygen and liquid hydrogen. The LOX tank holds 250,000 gallons and LH2 sphere about 850,000 gallons.

The cryogenics are fed from the storage tanks through pipelines to the pad. For the Common Booster Core, the propellants are routed up to the launch table upon which the rocket sits. Tail service masts, the large box-like structures at the base of the vehicle, feed the oxygen and hydrogen to the booster via separate umbilicals.

The upper stage receives its cryos from the middle swing arm that extends from the Fixed Umbilical Tower to the front-side of the rocket.

0203 GMT (10:03 p.m. EDT Fri.)
The chilldown of the upper stage liquid hydrogen system is reported complete, clearing the way for loading the rocket's tank.

0155 GMT (9:55 p.m. EDT Fri.)
A current check of the weather shows two rules -- anvil clouds and the electrical potential in the air -- remain "red" at this time. But the lightning advisory that's been in effect all evening will be allowed to expire at 10 p.m. as conditions gradually improve.

0140 GMT (9:40 p.m. EDT Fri.)
First stage liquid oxygen tanking operation is switching from "slow-fill" to "fast-fill" mode. The rocket will be loaded with 40,000 gallons of supercold LOX.

0133 GMT (9:33 p.m. EDT Fri.)
As tonight's countdown continuing to go very smoothly, the launch team is preparing to start fueling the Delta 4 rocket's upper stage. The "go" has been given to start the chilldown conditioning of the upper stage liquid hydrogen system. [/size]

[Salo]

Трансляция идёт:

http://www.ulalaunch.com/site/pages/ConferenceRoom_Webcast.shtml
http://www.spaceflightnow.com/delta/d355/status.html

[Salo]

Трёхминутная готовность.

Патч миссии:

[Salo]

Улетела! :wink:

[Salo]

Есть отделение ТТУ.

[Salo]

Есть отделение первой ступени.

[Salo]

Есть сброс ГО и включение МД второй ступени.

[Salo]

Отключение МД второй ступени.