Merah Putih - Falcon 9 - CCAFS SLC-40 - 07.08.2018

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Chris B - NSF‏ @NASASpaceflight 2 ч. назад

FEATURE ARTICLE: SpaceX Falcon 9 set to launch Merah Putih for first Block 5 reflight -

https://www.nasaspaceflight.com/2018/08/spacex-falcon-9-merah-putih-block-5-reflight/ ...

- By William Graham #SootyBlock5

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Прогноз погоды L-1 (на 2018-08-07)

Falcon 9 Telkom L-1 Forecast

80% GO

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https://spaceflightnow.com/2018/08/05/spacex-set-to-re-fly-first-falcon-9-block-5-booster-tuesday/

SpaceX set to re-fly first Falcon 9 Block 5 booster Tuesday
August 5, 2018 | Stephen Clark


The first stage of a Falcon 9 rocket descends to a landing on SpaceX's drone ship "Of Course I Still Love You" on May 11 after launch from Cape Canaveral. It was the first upgraded Falcon 9 Block 5 booster, and the same vehicle is set to re-launch Tuesday. Credit: SpaceX

Forecasters expect good weather on Florida's Space Coast for liftoff of a Falcon 9 rocket early Tuesday with an Indonesian communications satellite.

The two-hour launch window opens at 1:18 a.m. EDT (0518 GMT) Tuesday, and SpaceX ground crews plan to raise the 229-foot-tall (70-meter) Falcon 9 rocket vertical at Cape Canaveral's Complex 40 launch pad Monday for final countdown preparations.

The payload for Tuesday's mission is named Merah Putih, representing the red and white of the Indonesian flag. Previously known as Telkom 4, the Merah Putih satellite is owned by Telkom Indonesia and is heading for a perch in geostationary orbit more than 22,000 miles (nearly 36,000 kilometers) over the equator.

SpaceX test-fired the rocket Thursday in a customary pre-launch static fire test, and the company has confirmed the launch Tuesday will reuse the first stage booster first flown May 11 on the maiden flight of the upgraded Falcon 9 Block 5 rocket.

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The improved version of the Falcon 9 has now launched three times with upgraded first and second stages together on the same flight, but Tuesday's mission will be the first time a Block 5 first stage booster has been re-launched.

SpaceX recovered the first stage from the May 11 flight, which deployed Bangladesh's first communications satellite named Bangabandhu 1 into orbit, aboard a drone ship in the Atlantic Ocean.

The upgrades to the Falcon 9 Block 5 include a beefed up heat shield, retractable landing legs and other modifications to make the first stage simpler to reuse, reducing the refurbishment needed between missions.

SpaceX intends to recover the reused stage again after Tuesday's launch. The company's drone ship "Of Course I Still Love You" is en route to a position a few hundred miles east of Cape Canaveral in the Atlantic Ocean, the targeted touchdown point for the first stage.

SpaceX was expected to conduct more invasive and time-consuming inspections on the first returned Block 5 booster, and three months after its first launch, the stage is ready to go again.

"We are going to be very rigourous in taking this rocket apart and confirming our design assumptions to be confident that it is indeed able to be reused without being taken apart," said Elon Musk, SpaceX's founder and CEO, during a conference call with reporters, referring to the first Block 5 booster. "Ironically, we need to take it apart to confirm that it does not need to be taken apart. So this rocket probably won't re-fly for a couple of months."

He said the Block 5's first stage booster is designed to fly 10 times "with no scheduled refurbishment." With "moderate scheduled maintenance," Block 5 first stages could be capable of 100 missions, Musk said.


The Merah Putih mission patch. Credit: SpaceX

Such reuse goals are crucial to SpaceX's long-term mission of reducing the cost of space transportation, with an aim to eventually launch a Falcon 9 rocket, recover the booster, and re-launch it within 24 hours, according to Musk, who said in May that could be accomplished as soon as next year.

Between 30 and 50 boosters for Falcon 9 Block 5 vehicles could be manufactured to meet customer demand, each flying multiple times, he said.

The turnaround between the Bangabandhu 1 and Merah Putih missions will not set a record for the shortest time between flights of the same Falcon 9 first stage. That distinction goes to an older-generation Block 4 booster, which launched April 18 and then again June 29 from Cape Canaveral, before SpaceX intentionally disposed of the rocket.

Block 4-generation Falcon 9 boosters could only be reused once.

After Thursday's static fire test, workers lowered the Falcon 9 rocket and rolled it back inside a nearby hangar for attachment of the Merah Putih satellite.

Merah Putih will provide C-band telecommunications services over Indonesia and India. The new telecom craft was built by SSL in Palo Alto, California.

SSL completed construction of the Merah Putih satellite ahead of schedule, according to Telkom Indonesia, also known as PT Telkom. The new satellite will replace Telkom 1, which failed in a mysterious debris-shedding event in geostationary orbit last year.


The Merah Putih spacecraft. Credit: SSL

Officials from Telkom Indonesia expected the Telkom 1 satellite, which launched in 1999, to remain operational until Merah Putih's launch. But Telkom 1's failure last year forced the operator to re-route communications traffic through other satellites.

The Merah Putih satellite is designed for a 16-year life, its owner said in a statement. The spacecraft will be positioned in geostationary orbit more than 22,000 miles (nearly 36,000 kilometers) over the equator at 108 degrees east longitude.

"Satellite plays a vital role in our telecommunications infrastructure," said Zulhelfi Abidin, chief technology officer of Telkom Indonesia, in a press release earlier this year. "SSL has been an excellent spacecraft supplier and has completed the satellite construction ahead of schedule. We look forward to traveling to Florida to see the satellite launch later this summer."

Based on SSL's 1300-series satellite platform, Merah Putih carries 60 C-band transponders with coverage across the Indonesian archipelago, and other parts of South and Southeast Asia. The satellite will provide Internet, telephone and cellular backhaul services, according to SSL.

Forecasters from the U.S. Air Force's 45th Weather Squadron predict an 80 percent probability of acceptable weather during Tuesday's two-hour window.

Clear skies are expected in the overnight hours, and remnants of sea breeze thunderstorms should be west of the Space Coast at launch time.

"Monday night into early Tuesday morning, winds will remain easterly at the surface and northeasterly aloft," forecasters wrote in an outlook issued Sunday.

"Low to mid-levels will be relatively dry with minimal instability. These conditions paired with the lack of diurnal heating will contribute to primarily clear skies over the area," the forecast said. "The primary weather concerns will be any residual cumulus clouds or isolated showers pushing over the area from the Atlantic, and anvil clouds from convective activity near the Gulf Stream."

The forecast calls for a few clouds at 2,500 feet and a few clouds at 30,000 feet, light easterly winds at 8 to 10 mph, and a temperature of 77 degrees Fahrenheit at launch time.

If the launch gets delayed to Wednesday, there is a 70 percent probability of good weather as more moisture arrives in the area, raising the chances of thick clouds.

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Stephen C. Smith‏ @WordsmithFL 28 мин. назад

The @SpaceX Falcon 9 just went vertical at LC-40.

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https://spaceflightnow.com/2018/08/06/falcon-9-merah-putih-mission-status-center/

Live coverage: Falcon 9 rocket poised for launch from Cape Canaveral
August 6, 2018 | Stephen Clark

08/06/2018 19:49 Stephen Clark

SpaceX's Falcon 9 has been raised vertical at Cape Canaveral's Complex 40 launch pad in advance of an early morning launch window Tuesday.

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https://spaceflightnow.com/2018/08/06/falcon-9-launch-timeline-with-merah-putih/

Falcon 9 launch timeline with Merah Putih
August 6, 2018 | Stephen Clark

SpaceX's Falcon 9 rocket is set for liftoff from Cape Canaveral on Tuesday, heading due east over the Atlantic Ocean to deliver the Merah Putih communications satellite into orbit around 32 minutes later.

The 229-foot-tall (70-meter) rocket is poised for launch from pad 40 at Cape Canaveral Air Force Station in Florida at 1:18 a.m. EDT (0518 GMT) Tuesday at the opening of a two-hour launch window.

Спойлер

The Falcon 9 rocket set for launch Tuesday is the first to re-fly an upgraded Block 5 configuration first stage. The same booster first flew on the maiden Falcon 9 Block 5 mission in May.

Perched atop the rocket is the Merah Putih communications satellite, a spacecraft manufactured by SSL — formerly known as Space Systems/Loral — and owned by Telkom Indonesia.

The U.S.-built, Indonesian-owned satellite will provide C-band telecommunications services over Indonesia and India, along with other parts of South and Southeast Asia.

SSL completed construction of the Merah Putih satellite ahead of schedule, according to Telkom Indonesia. The new satellite will replace Telkom 1, which failed in a mysterious debris-shedding event in geostationary orbit last year.

Officials from Telkom Indonesia expected the Telkom 1 satellite, which launched in 1999, to remain operational until Merah Putih's launch. But Telkom 1's failure last year forced the operator to re-route communications traffic through other satellites.

The Merah Putih satellite is designed for a 16-year life, its owner said in a statement. The spacecraft will be positioned in geostationary orbit more than 22,000 miles (nearly 36,000 kilometers) over the equator at 108 degrees east longitude.

Based on SSL's 1300-series satellite platform, Merah Putih carries 60 C-band transponders with coverage across the Indonesian archipelago, and other parts of South and Southeast Asia. The satellite will provide Internet, telephone and cellular backhaul services, according to SSL.

The timeline below outlines the launch sequence for the Falcon 9 flight with Merah Putih, including the descent of its first stage back to SpaceX's drone ship "Of Course I Still Love You" in the Atlantic Ocean east of Cape Canaveral.

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+0:01:09: 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+0:01:19: Max Q


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

T+0:02:30: MECO


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

T+0:02:34: Stage 1 Separation


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

T+0:02:36: First Ignition of Second Stage


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

T+0:03:28: 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+0:06:13: 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+0:08:06: SECO 1


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

T+0:08:08: Stage 1 Landing


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

T+0:26:15: Second Ignition of Second Stage


The Falcon 9's second stage Merlin engine restarts to propel the Merah Putih communications satellite into a geostationary transfer orbit.

T+0:27:13: SECO 2


The Merlin engine shuts down after a short burn to put the Merah Putih satellite in the proper orbit for deployment.

T+0:32:40: Merah Putih Separation


The Merah Putih satellite separates from the Falcon 9 rocket in a geostationary transfer orbit.

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Ken Kremer‏ @ken_kremer 20 мин. назад

#Falcon9 just went vertical at about 1225 pm ET today Aug 6 as speedboats and birds fling by. #SpaceX targeting #MerahPutih launch 118 AM ET Aug 7. @ken_kremer http://spaecupclose.com 

Спойлер

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SpaceX‏Подлинная учетная запись @SpaceX 13 мин. назад

Falcon 9 and Merah Putih are vertical on Pad 40 in Florida. Weather is 80% favorable for the two-hour launch window, which opens Tuesday, August 7 at 1:18 a.m. EST, 5:18 a.m. UTC. http://spacex.com/webcast 

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Chris B - NSF‏ @NASASpaceflight 16 мин. назад

And yes, the internet is now busily trying to work out what secret message the booster has written in her soot..... Perhaps some sort of QR Code that Tesla owners can scan for a free car wash?

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08/07/2018 04:21 Spaceflight Now

The Sun set on launch complex 40 earlier this evening as the news media set up their remote cameras. As darkness fell the red planet Mars rose in the sky. These pictures are from Ken Kremer of Space Up Close.

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TomCross‏ @_TomCross_ 1 ч. назад

We are about 3 hours from launch of Merah Putih! A little while ago SpaceX gave us an opportunity to setup launch pad cameras just before sunset and the Sun cast an orange glow on the rocket. Best photoshoot ever. SpaceX lights up the sky tonight at 1:18am #spacex @Teslarati

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Robin Seemangal‏Подлинная учетная запись @nova_road 55 мин. назад

I can't get over the alien hieroglyphics

Can you translate @elonmusk

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08/07/2018 05:43 Stephen Clark

T-minus 2 hours, 35 minutes. Final countdown preparations are underway at Cape Canaveral as teams prepare a Falcon 9 rocket for liftoff at 1:18 a.m. EDT (0518 GMT).

Fueling of the Falcon 9 rocket will begin at 12:43 a.m. EDT (0443 GMT), three minutes after the SpaceX launch team will be electronically polled for their "go" to proceed into the final countdown.

Super-chilled, densified kerosene and liquid oxygen will be simultaneously pumped into the Falcon 9's first stage beginning at T-minus 35 minutes. Liquid oxygen will begin flowing into the second stage at T-minus 16 minutes.

In the final 10 minutes of the countdown, an automatic sequencer will command the Falcon 9's first stage engines to be chilled in preparation for ignition, the rocket's navigation computer will be configured for flight, its upper stage engine will run through a steering profile, and the launch pad's strongback will be retracted around 1.5 degrees away from the rocket.

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Ken Kremer‏ @ken_kremer 1 мин. назад

Up close view of the #MerahPutih logo on @SpaceX recycled #Block5 #Falcon9 nose cone awaiting launch at 118 AM ET Aug 7 from #pad40 #CCAFS. @ken_kremer http://spaceupclose.com 

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08/07/2018 05:50 Spaceflight Now

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Ken Kremer‏ @ken_kremer 2 мин. назад

Up close view of @SpaceX reused #Block5 #Falcon9 landing legs awaiting launch of #MerahPutih comsat at 118 AM ET Aug 7 from #pad40 #CCAFS.
@ken_kremer http://spaceupclose.com