AEHF-5 - Atlas V 551 (AV-084) - CCAFS SLC-41 - 08.08.2019, 10:13 UTC

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Aug 07, 2019 15:49
Atlas RP-1 load completed

The Atlas V's first stage has been loaded with RP-1 fuel that will power the main engine during the initial phase of Thursday's AEHF-5 launch. Cryogenic fueling of the rocket with liquid oxygen and liquid hydrogen occurs during the final two hours of the countdown tomorrow.

Launch of the Atlas V to deploy the AEHF-5 spacecraft for the U.S. Air Force Space and Missile Systems Center remains scheduled for Thursday morning from Cape Canaveral. The two-hour launch window opens at 5:44 a.m. EDT (0944 UTC).

The official launch weather forecast continues to project an 80 percent chance of favorable conditions, calling for scattered clouds, light southwesterly winds and a temperature near 78 degrees F. The only concern will be anvil clouds drifting in from distant thunderstorms in west-central Florida.

[tnt22]

Прогноз погоды L-1 на 8 августа

AV-083 AEHF-5 L-1 Forecast 8 Aug Launch
 
Пусковой день (8.08) - = 80 % GO
Резервный день (9.08) - = 90 % GO

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45-е космокрыло извещает об открытии полигона для проведения работ с РН Atlas V по пуску КА AEHF-5

 

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Опубликована

Airspace Closure Area

 

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Объявлена

Launch Hazard Area

 

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 ULA‏ Подлинная учетная запись @ulalaunch 23 мин. назад
ULA's Live Launch Blog will provide official and timely information. Live reports begin at 10:45pmEDT (0345 UTC) tonight. Liftoff is targeted for 5:44amEDT (0944 UTC) Aug. 8, at the opening of the 120-min window. http://bit.ly/av_aehf5 

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https://www.losangeles.af.mil/News/Article-Display/Article/1927224/aehf-5-ready-for-launch/

AEHF-5 Ready for Launch
SMC Public Affairs / Published August 06, 2019

CAPE CANAVERAL AIR FORCE STATION, Fla --
The Air Force's fifth Advanced Extremely High Frequency (AEHF) satellite, the culmination of a prominent acquisition effort championed by the nation's launch and satellite procurer of choice, the USAF Space and Missile Systems Center (SMC), completed it's roll out to Space Launch Complex-41 launch pad at 10:49 a.m. EDT today, here.

Launch of the AEHF-5 satellite aboard a United Launch Alliance Atlas V launch vehicle is set for Aug. 8, 2019, with the launch window opening at 05:44 a.m. EDT. A live broadcast will begin 20 minutes before launch and webcast is available to be viewed at www.ulalaunch.com.

To maximize satellite on-orbit capability, SMC ordered the Atlas V 551 for this mission, the most powerful Atlas rocket available.  This lift-off will mark the 10th Atlas V 551 launch and 80th Atlas V launch.

The SMC-procured AEHF is a joint-service satellite communications system providing survivable, global, secure, protected and jam-resistant communications for high-priority military ground, sea and air assets. AEHF also provides protected satellite communications to our international partners Canada, United Kingdom, Netherlands and Australia. The AEHF system is the follow-on to the Milstar system, augmenting, improving and expanding the DOD's Military Satellite Communications (MILSATCOM) architecture.

The Production Corps, SMC's Agile capabilities delivery arm, leads the AEHF team, and Air Force Space Command operates the AEHF system. Lockheed Martin Space Systems Company is the AEHF prime contractor, and Northrop Grumman Aerospace Systems is the payload developer and manufacturer.

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 Chris G - NSF‏ @ChrisG_NSF 7 мин. назад
Major thanks to @ulalaunch for waiting out a 3 hour weather delay for remote can set up! #AtlasV #AEHF5

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NOTMAR

NAVAREA IV 691/2019 (11,25,26)

WESTERN NORTH ATLANTIC.
FLORIDA.
1. HAZARDOUS OPERATIONS, ROCKET LAUNCHING
   080944Z TO 081214Z AUG, ALTERNATE
   090940Z TO 091210Z AUG IN AREAS BOUND BY:
   A. 28-38-59N 080-37-41W, 28-38-00N 080-01-00W,
     28-37-00N 079-45-00W, 28-35-00N 078-57-00W,
    28-27-00N 078-57-00W, 28-29-10N 080-32-24W.
   B. 27-54-00N 071-38-00W, 28-09-00N 071-35-00W,
    27-39-00N 067-11-00W, 27-26-00N 067-14-00W.
   C. 24-01-00N 049-46-00W, 24-15-00N 049-38-00W,
    23-35-00N 047-22-00W, 23-21-00N 047-27-00W.
2. CANCEL THIS MSG 091310Z AUG 19.

( 070913Z AUG 2019 )

Зоны B и C идентичны зонам C и D A1207/19 (#58) соответственно.

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Локальное извещение мореплавателям, стр. 5

 

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08/08/2019 01:10 Stephen Clark

United Launch Alliance teams at Cape Canaveral are readying an Atlas 5 rocket for launch at 5:44 a.m. EDT (0944 GMT) Thursday with the U.S. Air Force's fifth Advanced Extremely High Frequency communications satellite.

Built by Lockheed Martin, the AEHF 5 satellite will join a network of geostationary relay stations providing secure, jam-resistant video, voice and data links for the U.S. military.

Teams at Cape Canaveral's Complex 41 launch pad loaded RP-1 kerosene fuel into the Atlas 5's first stage this morning. The first stage's Russian-built RD-180 engine will consume the kerosene in combination with super-cold liquid oxygen, which the launch team will load into the rocket in the final hours of the countdown early Thursday.

The Atlas 5's Centaur upper stage will also be filled with liquid oxygen and liquid hydrogen during the countdown.

Cryogenic tanking is scheduled to commence soon after 3:30 a.m. EDT (0730 GMT).

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 ULA‏ Подлинная учетная запись @ulalaunch 12 мин. назад
Wondering when and where you may see the #AtlasV #AEHF5 launch in and around Florida? This visibility map shows when and where your best chances are to see the rocket! Launch is scheduled for Thursday at 5:44amEDT from @45thspacewing at Cape Canaveral Air Force Station.

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 Julia‏ @julia_bergeron 37 мин. назад
The Mighty Atlas #AEHF5 fairing art. That fairing holds quite the bus sized satellite.

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08/08/2019 03:29 Stephen Clark

Clouds are thinning over Cape Canaveral after sunset evening after another rainy summertime afternoon on the Space Coast.

Forecasters expect an 80 percent chance of favorable conditions during the Atlas 5's two-hour launch window, which opens at 5:44 a.m. EDT (0944 GMT) Thursday.

The only slight weather concern is the possibility of anvil clouds violating launch weather criteria.

The most recent forecast issued by the U.S. Air Force's 45th Weather Squadron earlier today calls for partly cloudy skies, west-southwest winds of about 10 knots, and a temperature of 77 to 79 degrees Fahrenheit during the launch window.

[tnt22]

Закрываемые зоны

по NAVAREA IV 691/2019


по NAVAREA IV 691/2019, A1207/19, A1208/19 

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Для справки

 Jon Van Horne :f09f90b4: :f09f93b7: :f09f8cb4: @ #ULASocial‏ @therealjonvh 2 ч. назад
FUN FACT:


Jan 1988 - May 2019


626 Countdowns


231 Scrubs - 111 to Weather, 120 Other


395 Launch - 273 On Time, 122 Delay < 37 to Weather, 85 Other


#ULASocial #AtlasV #AEHF5

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Aug 08, 2019 05:46

From the Atlas Spaceflight Operations Center at Cape Canaveral Air Force Station in Florida, this is Atlas Launch Control at T-minus 6 hours, 20 minutes and holding.

We are about to begin the countdown for the United Launch Alliance Atlas V rocket to deploy the U.S. Air Force Space and Missile System Center's fifth Advanced Extremely High Frequency (AEHF-5) spacecraft, one of the most sophisticated communications satellites ever built to relay protected transmissions to strategic, nuclear and tactical forces.

Activities are on schedule for liftoff from Space Launch Complex-41 at 5:44 a.m. EDT (0944 UTC). The launch window extends to 7:44 a.m. EDT (1144 UTC), a duration of exactly two hours.

We will be starting the countdown at 10:54 p.m.

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Aug 08, 2019 05:54
Countdown begins

T-minus 6 hours, 20 minutes (L-6 hours, 50 minutes) and counting!

The countdown has been initiated for liftoff of the 80th Atlas V rocket before dawn from Cape Canaveral.

There are two pre-planned, built-in holds, each lasting 15 minutes, scheduled in the count. One pause is reserved prior to fueling at T-minus 2 hours, the other occurs prior to the terminal count at T-minus 4 minutes.

The Atlas V rocket, designated AV-083, will launch AEHF-5 into a customized high-perigee, low-inclination geosynchronous transfer orbit. This orbit benefits the satellite by requiring less fuel to reach its final circular geosynchronous altitude 22,300 miles above the Earth.

It will take five hours and 41 minutes to perform this Atlas V mission, from liftoff until deployment of the AEHF-5 spacecraft, and the Centaur upper stage will perform three burns to haul the heavy payload to the optimized orbit.

Our rocket variant being flown in the morning is the Atlas V 551 configuration that is distinguished by the five-meter-wide composite payload fairing, five solid rocket boosters that are side-mounted to the first stage and a single RL10C-1 engine on the Centaur upper stage. It stands 197 feet tall.

[tnt22]

Aug 08, 2019 06:09
Power up

This is Atlas Launch Control and T-minus 6 hours, 5 minutes (L-6 hours, 35 minutes) and counting.

The application of power to the Atlas and Centaur stages is underway at the start of today's countdown procedures. The stages are being powered up to begin launch day testing and final preparations for fueling operations.

Over the next few hours, final preps for the liquid oxygen and liquid hydrogen systems will be performed, along with a test of the rocket's guidance system and the first stage propulsion and hydraulic preps, internal battery checks and testing of the GPS metric tracking system used to follow the rocket as it flies downrange, plus a test of the S-band telemetry relay system