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

Автор tnt22, 03.10.2017 03:36:57

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Цитировать William Harwood‏ @cbs_spacenews 52 сек назад

F9/Koreasat5: Gorgeous day for a hotfire test! Wind out of the north, blows exhaust cloud back past vehicle

tnt22

Цитировать SpaceX‏Подлинная учетная запись @SpaceX 5 сек. назад

Static fire test of Falcon 9 complete—targeting October 30 launch of Koreasat-5A from Pad 39A in Florida.


tnt22

https://spaceflightnow.com/2017/10/26/falcon-9-rocket-engines-test-fired-in-advance-of-monday-launch/
ЦитироватьFalcon 9 rocket engines test-fired in advance of Monday launch
October 26, 2017 Stephen Clark


A plume of exhaust and steam appears fr om the base of the Falcon 9 rocket Thursday during a hold-down engine firing. Credit: Steven Young/Spaceflight Now

Moving closer toward launch Monday with a South Korean communications satellite, a SpaceX Falcon 9 rocket fired its nine Merlin main engines Thursday on a launch pad in Florida in a key preflight readiness test.
Спойлер
The Merlin 1D engines fired at 12 p.m. EDT (1600 GMT) Thursday as hold-down restraints kept the two-stage Falcon 9 rocket anchored at pad 39A. Once engineers complete a data review, ground crews will roll the Falcon 9 back to its hangar to meet the Koreasat 5A communications satellite.

The rocket was moved to pad 39A fr om SpaceX's integration hangar about a quarter-mile to the south, wh ere technicians assembled the newly-built two-stage launcher. The Falcon 9 was without its payload for Thursday's hotfire test, a change in practice instituted last year after a rocket exploded minutes before a similar hold-down firing, destroying an Israeli communications satellite on-board.

Once the Falcon 9 is back in the hangar near pad 39A, workers will attach the rocket's payload shroud containing the Koreasat 5A satellite.

It will be rolled back out to pad 39A, a seaside launch complex formerly used by Saturn 5 moon rockets and the space shuttle, over the weekend for a liftoff currently scheduled for Monday afternoon.

Monday's launch window opens at 3:34 p.m. EDT (1934 GMT) and extends to 5:58 p.m. EDT (2158 GMT).

The Koreasat 5A launch will mark SpaceX's 16th mission of the year, and the 44th Falcon 9 flight overall since June 2010.

Built by Thales Alenia Space, Koreasat 5A will provide direct-to-home television broadcasting and other communications services in Korea, Japan, the Philippines, Guam, and Southeast Asia. Other coverage zones will include the Middle East and East Africa, wh ere Koreasat 5A will support maritime communications.

The Falcon 9 rocket will deploy Koreasat 5A into an elliptical, egg-shaped transfer orbit on the way to an eventual operating position in geostationary orbit 22,300 miles (35,800 kilometers) over the equator.

Owned by KTsat of South Korea, the new satellite will replace Koreasat 5 launched in 2006.

The Falcon 9's first stage will aim for landing on SpaceX's drone ship floating several hundred miles downrange in the Atlantic Ocean for recovery and reuse.
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Benny

#24
.

tnt22

Цитироватьdfln пишет:
Что—то нигде его вес не упоминается
здесь #23 (или напрямую - https://www.nasaspaceflight.com/2017/10/spacex-static-fire-falcon-9-koreasat-5a/) упоминаемые Вами 3500 кг
ЦитироватьThis booster will be tasked with lofting the 3,500 kg satellite into a Geostationary Transfer Orbit.
Производитель приводит более высокое значение
https://www.thalesgroup.com/en/worldwide/space/news/koreasat-5a-arrives-cape-canaveral-launch
ЦитироватьBased on Thales Alenia Space's new-generation Spacebus 4000B2 platform, the satellite is equipped with Ku-band transponders. It will weigh about 3,700 kg at launch

tnt22


tnt22


tnt22

https://www.thalesgroup.com/en/worldwide/space/news/just-three-days-launch-koreasat-5a
ЦитироватьJust three days to launch of KOREASAT-5A!
27.10.2017

The countdown has started for the KOREASAT-5A communications satellite, to be launched on October 30 by a SpaceX Falcon 9 from Cape Canaveral in Florida. Built by Thales Alenia Space for the South Korean satellite services operator KTSAT (a KT Corporation company), it will provide Internet access, multimedia, broadcast and fixed communications services.
Спойлер
Technical characteristics and coverage zone



Based on Thales Alenia Space's upgraded Spacebus 4000B2 platform, the satellite is equipped with 36 Ku-band transponders. It will weigh about 3,700 kg at launch. Positioned at 113° East, the satellite's coverage zone will include Korea, Indochina, Japan, the Philippines and the Middle East.

Thales Alenia Space's contribution  



As prime contractor, Thales Alenia Space was in charge of the design, production, testing and ground delivery of KOREASAT-5A. It is also responsible for the launch campaign, the launch and early orbital phase (LEOP) and in-orbit tests (IOT).

2017: happy launch year!



Following KOREASAT-5, KOREASAT-6 and KOREASAT-7 (launched in May this year), KOREASAT-5A is the fourth communications satellite built by Thales Alenia Space for KTSAT. KOREASAT-5A will also be the 35th built by Thales Alenia Space as prime contractor to be launched this year!

Copyrights:
Photos: © Thales Alenia Space/Imag[IN]
Artistic views: © Thales Alenia Space/Briot
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tnt22

ЦитироватьSpaceX Falcon 9 Static Test Fire for Koreasat 5A / Oct 26, 2017

AmericaSpace

Опубликовано: 26 окт. 2017 г.
(1:30)

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tnt22

Цитировать 45th Space Wing‏ @45thSpaceWing 5 ч. назад

T-1 Day: Falcon 9 • Koreasat 5A from Pad 39A --> Window opens at 3:34 pm ET.

tnt22

ЦитироватьChris G - NSF ретвитнул(а)

NASA Nate‏ @NASA_Nerd 2 ч. назад

SpaceX #Falcon9 sitting horizontal on Launch Complex 39A in preparation for tomorrow 3:34PM launch. – Launch Pad 39B (LC-39B)

tnt22

https://spaceflightnow.com/2017/10/29/korean-communications-craft-installed-on-spacexs-falcon-9-rocket/
ЦитироватьKorean communications craft installed on SpaceX's Falcon 9 rocket
October 29, 2017 Stephen Clark


The Koreasat 5A satellite pictured at Thales Alenia Space's manufacturing facility in Cannes, France. Credit: Thales Alenia Space

A multipurpose communications satellite owned by a South Korean telecom company is set for liftoff Monday fr om Florida's Space Coast aboard a SpaceX Falcon 9 booster, and forecasters predict near-ideal conditions for a rocket launch.

The Koreasat 5A spacecraft, manufactured in Cannes, France, by Thales Alenia Space, was being attached this weekend to SpaceX's Falcon 9 rocket inside the company's hangar near launch pad 39A at NASA's Kennedy Space Center in Florida.
Спойлер
Once technicians complete final closeouts, the Falcon 9 will be rolled up the ramp to the historic launch pad via rails aboard a transporter-erector, then raised vertical ahead of Monday's countdown.

The launch window Monday opens at 3:34 p.m. EDT (1934 GMT) and extends until 5:58 p.m. EDT (2158 GMT), and the official weather forecast issued by U.S. Air Force meteorologists suggests mostly clear skies and favorable conditions are on tap for Monday afternoon.

There is less than a 10 percent chance that weather will prohibit launch. The only minor concern is with brisk northerly winds expected Monday.

Tropical Storm Philippe moved northeast off Florida's East Coast early Sunday before dissipating into a remnant low pressure system, and a cold front has also passed over the launch base, leaving fair weather in its wake.

"Monday morning will be chilly on the spaceport with temperatures dipping below 50 degrees Fahrenheit and lighter northerly winds," forecasters from the Air Force's 45th Weather Squadron wrote in an outlook released Sunday. "There is a very slight risk for the stronger winds to linger into Monday's launch window."

Conditions are launch time should be mostly sunny with a few clouds possible at 2,500 feet, good visibility, northerly winds of 15 to 20 mph, and a temperature of 69 degrees Fahrenheit.

SpaceX's launch team will oversee an automated countdown sequence Monday, beginning with power-up of the rocket and tests of telemetry connections. A poll of the team by SpaceX's launch conductor is scheduled at 2:21 p.m. EDT (1821 GMT), followed by the start of propellant loading three minutes later.

Super-chilled RP-1 kerosene and liquid oxygen will flow into both stages of the Falcon 9, along with high-pressure helium, to power and pressurize the rocket's Merlin engines. The kerosene and oxygen will be cooled close to their freezing points, increasing the fluid's density and allowing more propellants to be loaded into the rocket, a performance-raising technique introduced by SpaceX in 2015.

RP-1 will be pumped into the rocket first, followed by the start of liquid oxygen loading at around 2:59 p.m. EDT (1859 GMT).

The tanks will be topped off in the final stages of the countdown, and the first stage's nine Merlin 1D engines will be conditioned for ignition by flowing some of the cryogenic propellant through their plumbing. The computer-controlled countdown sequencer will also command a final steering check of the rocket's upper stage engine, pressurization of the Falcon 9's propellant tanks, and the retraction of the strongback support structure into position for engine start.

The first stage's Merlin 1D engines will ignite at around T-minus 3 seconds, and hold-down clamps will open when the countdown clock reaches zero, after a last-second readiness check by the Falcon 9's on-board computer.

Heading east from the Kennedy Space Center, the 229-foot-tall (70-meter) Falcon 9 will surpass the speed of sound in about one minute and climb into the stratosphere atop 1.7 million pounds of thrust.

The first stage engines will switch off and the booster will fall away approximately two-and-a-half minutes after liftoff, then fire nitrogen cold gas thrusters in a flip maneuver to point its engines forward.

Four aerodynamic grid fins will deploy from the booster, and a subset of the first stage engines are programmed to ignite a few minutes later, combining to steer the rocket toward SpaceX's drone ship — "Of Course I Still Love You" — floating in the Atlantic Ocean a few hundred miles east of Cape Canaveral.

The first stage's center engine will ignite again as the rocket makes its final descent, and hydraulic actuators will extend four landing legs just before touchdown.

If all goes according to plan, the first stage will land on the recovery barge around eight minutes after liftoff, completing this booster's first trip into space and back.

While SpaceX's rocket landings have captured attention and are key to the company's strategy to reuse Falcon 9 boosters, the main goal of Monday's flight — like all of SpaceX's missions — is the deployment of its commercial payload in orbit.

That will require to firings of the second stage's single Merlin engine, first to place Koreasat 5A in a parking orbit, then to propel the spacecraft into an egg-shaped transfer orbit arcing more than 30,000 miles above Earth.

Deployment of the 4.1-ton (3.7-metric ton) spacecraft is scheduled about a half-hour into the mission, and Thales ground controllers in Europe will take control of the satellite once it contacts ground stations.

Koreasat 5A's on-board engine will conduct multiple burns to circularize its orbit around 22,300 miles (35,800 kilometers) over the equator a few weeks after launch. Once the satellite passes post-launch tests, Thales will hand over control of Koreasat 5A to KTsat, a subsidiary of South Korea's KT Corp. based in Seoul.

Designed for a 15-year mission, Koreasat 5A is based on Thales' Spacebus 4000B2 satellite bus and is destined to place Koreasat 5, a communications craft launched in 2006.

Koreasat 5A will be parked at 113 degrees east longitude, wh ere its orbital velocity will match the rotation of Earth, allowing the satellite to hover over a fixed location, and remain in the place in the sky in view of ground antennas.

The satellite's solar panels will generate about 6.5 kilowatts of power for its Ku-band communications transmitters and receivers. Koreasat 5A carries 36 Ku-band transponders, providing Internat access, television broadcast and other multimedia services in Korea, Japan, the Philippines, Guam, Southeast Asia, and South Asia.

Koreasat 5A will also offer coverage for maritime communications in the Middle East, the Indian Ocean and parts of the Asia-Pacific region.

Here are some statistics for Monday's launch:
    [/li]
  • 44th Falcon 9 launch since 2010
  • 16th Falcon 9 launch this year
  • 33rd Thales Alenia Space-built satellite launched by SpaceX
  • 1st KTsat satellite launched by SpaceX
  • 106th launch from pad 39A since 1967
  • 38th Falcon 9 launch from Cape Canaveral
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tnt22

Цитировать Spaceflight Now‏ @SpaceflightNow 3 ч. назад

SpaceX's Falcon 9 rocket was raised vertical at the Kennedy Space Center this evening ahead of launch tomorrow. https://spaceflightnow.com/2017/10/29/video-falcon-9-rocket-raised-vertical-at-pad-39a/ ...
ЦитироватьUpdated: 10/30/2017 03:08

On the eve of liftoff with a Korean communications satellite, SpaceX's Falcon 9 rocket was lifted upright this evening at launch pad 39A at NASA's Kennedy Space Center in Florida.

The lift operation began around 5:45 p.m. EDT (2145 GMT).

See a time lapse video of the rocket going vertical in preparation for liftoff.

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LRR

http://www.spacex.com/webcast
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KOREASAT-5A MISSION
SpaceX is targeting launch of Koreasat-5A from Launch Complex 39A (LC-39A) at NASA's Kennedy Space Center, Florida on Monday, October 30 at 3:34 p.m. EDT, or 19:34 UTC. A backup launch window opens on Tuesday, October 31 at 3:34 p.m. EDT, or 19:34 UTC. The satellite will be deployed approximately 36 minutes after liftoff.Following stage separation, Falcon 9's first stage will attempt a landing on the "Of Course I Still Love You" droneship, stationed in the Atlantic Ocean.

You can watch the launch live below and find more information about the mission in our press kit.

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