KoreaSat 5A (Mugungwha 5A) - Falcon 9 (B1042) - Kennedy LC-39A - 30.10.2017, 19:34 UTC

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О трансляции.

SpaceX будет вести трансляцию по адресам:

spacex.com/webcast

youtube.com/watch?v=RUjH14vhLxA

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[Чебурашка]

Какая масса спутника? Что-то в пресс-релизе не нашёл

[Astro Cat]

И че там? Где пуск? Отменили?

[Зловредный]

До пуска ещё несколько часов.

Тот, кто создавал веб-трансляцию, неправильно указал время, наверное.

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Chris B - NSF‏ @NASASpaceflight 11 мин. назад

FEATURE ARTICLE: Falcon 9 tasked with Koreasat 5A mission as NASA approves flown boosters - https://www.nasaspaceflight.com/2017/10/falcon-9-koreasat-5a-nasa-approves-flown-boosters/ ... - by William Graham. Another Falcon 9 launch - plus news (to be expanded on later) that NASA has approved the use of flight-proven boosters, starting with CRS-13.

Спойлер

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Falcon 9 tasked with Koreasat 5A mission as NASA approves flown boosters

[che wi]

Robin Seemangal‏ @nova_road · 1h

Brisk morning here at #SpaceX LC-39A! Liftoff of the Falcon 9 from Kennedy Space Center with Koreasat-5A is at 3:34PM ET. OCISLY landing!

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Прогноз погоды L-0

Falcon 9 L-0 Launch Forecast

90% GO

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10/30/2017 19:08

Countdown preparations are progressing today ahead of the start of an automatic sequencer at T-minus 70 minutes.

A poll of the SpaceX launch team at T-minus 73 minutes will give approval to proceed with filling of the two-stage Falcon 9 launcher with RP-1 kerosene and liquid oxygen propellants.

Other steps leading up to the start of fueling include verifying the readiness of SpaceX's drone ship for recovery of the first stage booster, final checkouts of the Falcon 9, and evacuation of personnel from pad 39A.

Liftoff remains set for 3:34 p.m. EDT (1934 GMT) at the opening of a 144-minute launch window.

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10/30/2017 19:10

The final prelaunch weather forecast issued this morning continues to show a more than 90 percent chance of favorable conditions at launch time. The only slight concern is with ground winds.

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https://spaceflightnow.com/2017/10/30/falcon-9-launch-timeline-with-koreasat-5a/

Falcon 9 launch timeline with Koreasat 5A
October 30, 2017 Stephen Clark

SpaceX's Falcon 9 rocket is set for liftoff from Cape Canaveral on Monday, heading due east over the Atlantic Ocean to deliver the Koreasat 5A communications satellite into orbit around 36 minutes later.

Спойлер

The 229-foot-tall (70-meter) rocket is poised for launch from pad 39A at NASA's Kennedy Space Center in Florida at 3:34 p.m. EDT (1934 GMT) Monday at the opening of a 144-minute launch window.

Perched atop the rocket is the Koreasat 5A communications satellite, a spacecraft made by Thales Alenia Space for KTsat, a South Korean company which will us the new telecom relay station to broadcast television, provide Internet connectivity and support maritime services over the Middle East, the Indian Ocean, and broad swaths of Asia, including Korea and Japan.

The timeline below outlines the launch sequence for the Falcon 9 flight with Koreasat 5A.

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 39A.
 
T+0:01:10: Mach 1


The Falcon 9 rocket reaches Mach 1, the speed of sound, as the nine Merlin 1D engines provide more than 1.7 million pounds of thrust.

T+0:01:16: Max Q


The Falcon 9 rocket reaches Max Q, the point of maximum aerodynamic pressure.

T+0:02:33: MECO


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

T+0:02:36: Stage 1 Separation


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

T+0:02:38: First Ignition of Second Stage


The second stage Merlin 1D vacuum engine ignites for a six-minute burn to put the rocket and Koreasat 5A into a preliminary parking orbit.

T+0:03:40: 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+0:06:22: Stage 1 Entry Burn


A subset of the first stage's Merlin 1D engines ignite for an entry burn to slow down for landing. A final landing burn will occur just before touchdown.

T+0:08:32: SECO 1


The second stage of the Falcon 9 rocket shuts down after reaching a preliminary low-altitude orbit. The upper stage and Koreasat 5A begin a coast phase scheduled to last more than 18 minutes before the second stage Merlin vacuum engine reignites.

T+0:08:35: Stage 1 Landing


The Falcon 9 rocket's first stage booster touches down on SpaceX's drone ship in the Atlantic Ocean.

T+0:26:45: Second Ignition of Second Stage


The Falcon 9's second stage Merlin engine restarts to propel the Koreasat 5A communications satellite into a supersynchronous transfer orbit.

T+0:27:52: SECO 2


The Merlin engine shuts down after a short burn to put the Koreasat 5A satellite in the proper orbit for deployment.

T+0:35:38: Koreasat 5A Separation


The Koreasat 5A satellite separates from the Falcon 9 rocket in a supersynchronous transfer orbit.

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Spaceflight101 LIVE‏ @S101_Live 2 мин. назад

Overview of #KoreaSat5A, set for the seventh #Falcon9 GTO delivery of the year - http://bit.ly/2yf1all

KoreaSat 5A

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Spaceflight101 LIVE‏ @S101_Live 30 сек. назад

Two hours to the opening of today's #Falcon9 launch window. Launch Hazard Area is going into effect.

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10/30/2017 20:34

T-minus 2 hours. No problems have been reported in the countdown, and clocks are ticking toward liftoff of the Falcon 9 rocket at 3:34 p.m. EDT (1934 GMT).

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Spaceflight101 LIVE‏ @S101_Live 33 сек. назад

A repetition of RF link checks and Flight Termination System testing should be in work at this time ahead of the tanking polls. #Falcon9

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Chris G - NSF‏ @CwG_NSF 2 мин. назад

The launch team is beginning a technical poll of the Falcon 9 team ahead of propellant loading. #SpaceX #Falcon9 #KoreaSat5A

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Chris G - NSF‏ @CwG_NSF 54 сек. назад

T-90mins and counting. All is proceeding well at this time toward the start of fueling at T-70mins. #SpaceX #Falcon9 #KoreaSat5A

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James Dean‏Подлинная учетная запись @flatoday_jdean 1 ч назад

Breezy at KSC, but "very slight risk" strong winds will linger into #Falcon9 window opening at 3:34pm ET. #KoreaSat5A

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10/30/2017 21:16

Critical milestones coming in the next few minutes include a poll by the SpaceX launch conductor to begin fueling the booster with super-chilled kerosene and liquid oxygen propellants.

The readiness poll is scheduled for 2:21 p.m. EDT (1821 GMT), followed by the start of RP-1 kerosene loading around three minutes later. Super-cold liquid oxygen will flow into the two-stage rocket beginning at 2:59 p.m. EDT (1859 GMT).

The Falcon 9 rocket will deliver the Koreasat 5A communications satellite into an elliptical supersynchronous transfer orbit about a half-hour after liftoff.

Спойлер

Owned by South Korea-based KTsat, the spacercaft's communications payload includes 36 Ku-band transponders to provide television, Internet and maritime services over a broad swath of the Middle East, the Indian Ocean and Asia.

Today's launch will be the 44th flight of a Falcon 9 rocket since it debuted in June 2010, and the 16th Falcon 9 mission so far in 2017.

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