GPS III-01 - Falcon 9 - Canaveral SLC-40 - 23.12.2018 13:51 UTC

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12/18/2018 17:17 Stephen Clark

T-minus 18 minutes. Here are some statistics on today's launch:

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• 66th launch of a Falcon 9 rocket since 2010
• 72nd launch of Falcon rocket family since 2006
• 53rd Falcon 9 launch from Cape Canaveral
• 39th Falcon 9 launch from pad 40
• 3rd Falcon 9 launch for the US Air Force
• 1st Falcon 9 launch on an Air Force EELV-class mission
• 1st Lockheed Martin-built satellite launched by SpaceX
• 20th Falcon 9 launch of 2018
• 21st launch by SpaceX in 2018
• 20th launch overall from Cape Canaveral in 2018
• 10th flight of a Falcon 9 Block 5 first stage
• 13th flight of a Falcon 9 Block 5 second stage
  

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Chris G - NSF‏ @ChrisG_NSF 29 сек. назад

HOLD. #SpaceX #Falcon9 #GPSIII #AirForce

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Chris G - NSF‏ @ChrisG_NSF 20 сек. назад

SCRUB. #SpaceX #Falcon9 #GPSIII #AirForce

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Chris G - NSF‏ @ChrisG_NSF 52 сек. назад

First stage LOX (Liquid Oxygen) thermal limit constraints reaching safety limits. #SpaceX #Falcon9 #GPSIII #AirForce

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12/18/2018 17:29 Stephen Clark

The countdown stopped at T-minus 7 minutes, 1 second, due to a thermal constraint on the first stage liquid oxygen system.

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Chris B - NSF‏ @NASASpaceflight 10 сек. назад

SCRUB official, not enough time remaining in the window. 24 hour recycle. #ScrubTuesday

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Технический канал

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Ведущий трансляции попрощался со зрителями до завтра

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12/18/2018 17:34 Stephen Clark

SpaceX has officially declared a scrub for today. There's not enough time left in the launch window to recycle and resume the countdown for another try.

The Falcon 9 launch director has instructed the team to target a 24-hour turnaround, with another launch attempt possible Wednesday at 9:07 a.m. EST (1407 GMT).

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Chris G - NSF‏ @ChrisG_NSF 8 мин. назад

24hr recycle confirmed for #SpaceX #Falcon9 with #GPSIII for the #AirForce

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SpaceX‏Подлинная учетная запись @SpaceX 7 мин. назад

SpaceX team called a hold due to an out of family reading on first stage sensors. Vehicle and payload remain healthy; next launch attempt is tomorrow at 9:07 EST, 14:07 UTC.

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Chris G - NSF‏ @ChrisG_NSF 14 мин. назад

To look to tomorrow for #Falcon9, Upper Level Winds are expected to be marginal again. Chance of thicker clouds, too. Overall 80% (just for clouds, not including Upper Level Winds) chance of good weather.

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Прогноз погоды L-1 на новую дату пуска (19 декабря)

Falcon 9 GPS III-2 L-1 Launch Forecast

80% GO

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https://spaceflightnow.com/2018/12/18/falcon-9-launch-timeline-with-the-gps-3-sv01-navigation-satellite/

Falcon 9 launch timeline with the GPS 3 SV01 navigation satellite
December 18, 2018 | Stephen Clark

SpaceX's Falcon 9 rocket is set for liftoff from Cape Canaveral on Tuesday carrying the U.S. Air Force's first GPS 3-series navigation satellite destined for an orbit more than 12,000 miles above Earth.

Спойлер

...
The Lockheed Martin-built GPS 3 SV01 satellite mounted atop the rocket is the first member of an upgraded generation of GPS navigation spacecraft, featuring higher-power signals that are more resilient to jamming, and additional broadcast frequencies to make the GPS network more interoperable with other navigation satellite fleets.

The Falcon 9 rocket's first stage booster will not be recovered on this launch due to the performance required to place the GPS satellite into its intended orbit, while allowing for a fuel reserve to de-orbit the Falcon 9's upper stage at the end of the mission.

The timeline below outlines the launch sequence for the Falcon 9 flight with the GPS 3 SV01 spacecraft.

Data source: SpaceX

T-0:00:00: Liftoff


After the rocket's nine Merlin engines pass an automated health check, hold-down clamps will release the Falcon 9 booster for liftoff from pad 40.

T+0:01:04: Max Q


The Falcon 9 rocket reaches Max Q, the point of maximum aerodynamic pressure, a few seconds after surpassing the speed of sound.

T+0:02:44: MECO


The Falcon 9's nine Merlin 1D engines shut down.

T+0:02:48: Stage 1 Separation


The Falcon 9's first stage separates from the second stage moments after MECO.

T+0:02:50: First Ignition of Second Stage


The second stage Merlin 1D vacuum engine ignites for a five-and-a-half-minute burn to put the rocket and GPS 3 SV01 into a preliminary parking orbit.

T+0:03:22: Fairing Jettison


The 5.2-meter (17.1-foot) diameter payload fairing jettisons once the Falcon 9 rocket ascends through the dense lower atmosphere. The 43-foot-tall fairing is made of two clamshell-like halves composed of carbon fiber with an aluminum honeycomb core.

T+0:08:16: SECO 1


The second stage of the Falcon 9 rocket shuts down after reaching a preliminary orbit. The upper stage and GPS 3 SV01 begin a coast phase scheduled to about one hour before the second stage Merlin vacuum engine reignites.

T+1:08:51: Second Ignition of Second Stage


The Falcon 9's second stage Merlin engine restarts to propel the GPS 3 SV01 navigation satellite into an elliptical transfer orbit with an inclination of 55 degrees.

T+1:09:37: SECO 2


The Merlin engine shuts down after a planned 46-second burn to put the GPS 3 SV01 satellite in the proper orbit for deployment.

T+1:56:17: GPS 3 SV01 Separation


The GPS 3 SV01 satellite separates from the Falcon 9 rocket in an elliptical transfer orbit with an apogee, or high point, near the altitude of the GPS fleet, located around 12,550 miles (22,200 kilometers) above Earth.

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Трансляция пуска (вторая попытка)

на сайте SpaceX

spacex.com/webcast

или

на ТыТрубе

youtube.com/watch?v=aVIrgayWlI0

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https://www.spacex.com/webcast

SpaceX is targeting Wednesday, December 19 for launch of the United States Air Force's first Global Positioning System III space vehicle (SV) from Space Launch Complex 40 (SLC-40) at Cape Canaveral Air Force Station, Florida. The 26-minute launch window opens at 9:07 a.m. EST, or 14:07 UTC. The satellite will be deployed to medium Earth orbit approximately 1 hour and 56 minutes after liftoff.

Due to mission requirements, SpaceX will not attempt to land Falcon 9's first stage after launch.

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Отбой. Новая дата пуска будет объявлена позже...   

SpaceX‏Подлинная учетная запись @SpaceX 3:32 - 19 дек. 2018 г.

Standing down from today's launch attempt of GPS III SV01 to further evaluate out of family reading on first stage sensors; will confirm a new launch date once complete.