WGS-10 - Delta IV-M+(5,4) [D-383] - CCAFS, SLC-37 - 16.03.2019, 00:26 UTC

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Mar 15, 2019 23:39
Weather no 90% go

Weather continues to look favorable for liftoff this evening. The weather officer has improved the odds of acceptable launch conditions to 90 percent.

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https://spaceflightnow.com/2019/03/15/photos-mobile-gantry-retracted-at-delta-4-launch-pad/

Photos: Mobile gantry retracted at Delta 4 launch pad
March 15, 2019 | Stephen Clark

These photos show the 330-foot-tall mobile service tower moving into position for liftoff of a Delta 4 rocket from Cape Canaveral's Complex 37B launch pad Friday.

The 218-foot-tall (66-meter) rocket is set for liftoff during a launch window opening at 6:56 p.m. EDT (2256 GMT) and extending to 9:05 p.m. EDT (0105 GMT). The mission's payload is the U.S. Air Force's tenth Wideband Global SATCOM spacecraft, valued at roughly $400 million, to extend the reach of the military's highest-capacity satellite communications network.

The Delta 4 rocket will be powered off the launch pad with an Aerojet Rocketdyne RS-68A main engine and four solid rocket boosters built by Northrop Grumman Innovation Systems. The hydrogen-fueled core stage and solid-fueled strap-on motors will combine to generate 1.8 million pounds of thrust at liftoff.

Спойлер

Credit: United Launch Alliance


Credit: United Launch Alliance


Credit: Alex Polimeni/Spaceflight Now


Credit: United Launch Alliance


Credit: United Launch Alliance


Credit: Walter Scriptunas II / Spaceflight Now


Credit: United Launch Alliance


Credit: United Launch Alliance


Credit: United Launch Alliance


Credit: Alex Polimeni/Spaceflight Now


Credit: Walter Scriptunas II / Spaceflight Now


Credit: Alex Polimeni/Spaceflight Now


Credit: Alex Polimeni/Spaceflight Now


Credit: Alex Polimeni/Spaceflight Now

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Mar 16, 2019 02:37

NEW LAUNCH TIME has been targeted for 7:52 p.m. EDT (2352 UTC).

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ULA‏Подлинная учетная запись @ulalaunch 8 ч. назад

The #WGS10 patch is emblazoned on the #DeltaIV rocket's payload fairing. Here's the story behind the art:

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Mar 16, 2019 03:14

NEW LAUNCH TIME has been targeted for 8:26 p.m. EDT (0026 UTC).

The TDRSS constraint has been cleared. The tracking asset is ready to support tonight's Delta IV launch.

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Опрос готовности

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Зажигание!

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Пуск!

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ULA‏Подлинная учетная запись @ulalaunch 5 ч. назад

LIFTOFF of the United Launch Alliance #DeltaIV rocket and #WGS10 for the U.S. military's Wideband Global SATCOM communications satellite constellation in space! @usairforce @AF_SMC @BoeingSpace https://www.ulalaunch.com/missions/delta-iv-wgs-10 ...


Chris B - NSF‏ @NASASpaceflight 5 ч. назад

LAUNCH! ULA Delta IV launches with WGS-10 - Follow Along Live: https://forum.nasaspaceflight.com/index.php?topic=46751.160 ...

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Отделение боковых ТТУ SRM

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Сброс ГО

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Отделение 1-й ст РН

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Успешный пуск РН Delta IV

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Mar 16, 2019 03:45
MECO 1

T+plus 19 minutes, 34 seconds. The first main engine cutoff (MECO 1) on the Delta Cryogenic Second Stage is confirmed, completing the first of two burns during today's launch sequence for the Air Force's Wideband Global SATCOM-10 communications satellite. The vehicle has reached a preliminary Earth orbit where it will coast above the equator for the next 10 minutes before the next burn begins.

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Mar 16, 2019 03:55
Main Engine Start 2

T+plus 29 minutes, 35 seconds. We have ignition! The Delta Cryogenic Second Stage's single RL10B-2 engine has re-ignited to propel WGS-10 into a super-synchronous transfer orbit around the Earth.

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2-е выкл ДУ DCSS (MECO2)

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Отделение КА!