SGDC 1, Koreasat-7 (Mugungwa 7) – Ariane 5 ECA – Куру ELA-3 – 04.05.2017 21:50 UTC

[tnt22]

05/04/2017 23:16
The countdown is expected to hold at Minus-7 minutes if the issue is not resolved in time.

[tnt22]

Spaceflight101 LIVE‏ @S101_Live 1 мин назад

#Ariane5 will not enter the Synchronized Sequence & the count will hold at T-7 minutes due to a ground systems issue. Window until 23:19UTC

[tnt22]

05/04/2017 23:19
The launch time is now expected at 2055 GMT (4:55 p.m. EDT; 5:55 p.m. French Guiana time) after a delay in fueling the Ariane 5 rocket earlier today. The delays are believed to have been caused by stormy weather and lightning over the space base this morning.

[tnt22]

Spaceflight101 LIVE‏ @S101_Live 2 мин. назад

.@arianespaceceo confirms T-0 is slipping to 21:55 UTC due to a shift in propellant loading timeline.

Spaceflight101 LIVE‏ @S101_Live 1 мин. назад

В ответ @S101_Live и @arianespaceceo
 
Correction 20:55 UTC is the current T-0 target. #Ariane5

[tnt22]

05/04/2017 23:22
The countdown continues ticking toward Minus-7 minutes, when the synchronized sequence is due to begin. The clock will hold there until 2048 GMT (4:48 p.m. EDT).

[tnt22]

05/04/2017 23:24
Minus-7 minutes and holding. The countdown has stopped as expected as the launch team aims for a delayed liftoff at 2055 GMT (4:55pm EDT).

[tnt22]

DutchSpace‏ @DutchSpace 3 мин. назад

Countdown clock currently red probably due to fueling timeline shift #VA236

[tnt22]

DutchSpace‏ @DutchSpace 2 мин. назад

While we wait, nice shot of #Ariane5 #VA236 sitting on the pad in the jungle #CSG

[Дмитрий Ильин]

Слышно, как поют птички в джунглях.

[tnt22]

[tnt22]

DutchSpace‏ @DutchSpace 3 мин. назад

Great shot of the umbilical mast at #ELA3 #Ariane5 #VA236 #CSG

[tnt22]

Chris B - NSF‏ @NASASpaceflight 13 мин. назад

T-0 now 55 mins past the hour. PS Where there are Brazilians, there is always a Brazilian flag.

[tnt22]

05/04/2017 23:33
Today's launch will deliver the SGDC and Koreasat 7 communications satellites to an orbit targeting a planned high point of 22,323 miles, a targeted low point of 155 miles and an inclination of 4 degrees.

Спойлер

Both satellites were built by Thales Alenia Space and will use their on-board engines to raise their orbits to maintain altitude nearly 22,300 miles over the equator.

The 12,643-pound SGDC satellite, occupying the upper position in the Ariane 5's dual-payload stack, will beam broadband connectivity across Brazil, focusing on remote regions out of reach of terrestrial networks. The craft, owned by government-based Telebras, will also provide secure communications services to the Brazilian military.

SGDC will separate from the Ariane 5's second stage at T+plus 28 minutes, 11 seconds.

A Sylda 5 adapter will be discarded a few minutes later, revealing the 8,113-pound Koreasat 7 spacecraft, the mission's other satellite passenger.

Koreasat 7 is designed to support video, data broadband and direct-to-home broadcasting services over South Korea, Indonesia, Indochina and India for Seoul-based KTsat. Separation of the Koreasat 7 spacecraft from the Ariane 5 rocket is scheduled at T+plus 36 minutes, 46 seconds.

The payloads have a combined mass of approximately 22,683 pounds, or 10,289 kilograms, including the barrel-shaped Sylda dual-payload adapter.

Sign up to follow us on Twitter for the latest launch updates and space news.

[свернуть]

[Дмитрий Ильин]

[tnt22]

05/04/2017 23:37
During the last few minutes, the Synchronized Sequence has been prepped for activation. This computer-run sequence assumes control of the countdown at the Minus-7 minute mark to perform the final tasks to place the rocket and pad systems in launch configuration.

At Minus-4 seconds, the rocket's onboard computer will take over control of main engine start, health checks of the powerplant and solid rocket booster ignition commanding for liftoff.

[tnt22]

05/04/2017 23:44
The countdown should resume in three minutes if Arianespace still targets liftoff at 2055 GMT (4:55 p.m. EDT).

[Дмитрий Ильин]

[tnt22]

[tnt22]

Spaceflight101 LIVE‏ @S101_Live 3 мин. назад
 
The board is GREEN again, expecting the Synchronized Sequence to begin in one minute. #ariane5

[tnt22]

DutchSpace‏ @DutchSpace 1 мин. назад

again red for launch pad #VA236