JCSat-17, GEO-KOMPSAT-2B (GK2B, Chollian-2B) - Ariane 5 ECA (VA252) - Kourou ELA-3 - ~19.02.2020, TBD

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Arianespace Flight VA252 - Launch Campaign          
                          arianespace
3:33
Опубликовано: 17 февр. 2020 г.

Спойлер

For its third flight of 2020, Arianespace will orbit two telecommunications satellites using an Ariane 5 launch vehicle from the Guiana Space Center: JCSAT 17 for the Japanese operator SKY Perfect JSAT Corporation; and GEO KOMPSAT-2B for Korea Aerospace Research Institute (KARI).
With this mission dedicated to space applications for telecommunications and environment monitoring, Arianespace once again contributes to the improvement of life on Earth.
Flight VA252 will be performed from Ariane Launch Complex No. 3 (ELA 3) in Kourou, French Guiana.
Liftoff is planned on Tuesday, February 18, 2020, as early as possible within the following launch window:
- Between 5:18 p.m. and 6:20 p.m. Washington, D.C. time,
- Between 7:18 p.m. and 8:20 p.m. Kourou, French Guiana time,
- Between 22:18 and 23:20 Universal time (UTC),
- Between 11:18 p.m. and 12:20 a.m. Paris time, in the night of February 18 to 19,
- Between 07:18 a.m. and 08:20 a.m. Japan time, in the morning of February 19,
- Between 07:18 a.m. and 08:20 a.m. Korea time, in the morning of February 19.

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Stéphane Israël‏ @arianespaceceo 26 мин. назад

Rollout completed: the Spaceport's ELA-3 launch zone today welcomed the #Ariane5 for #Arianespace's upcoming flight – which will orbit satellites for SKY Perfect JSAT Corporation and @kari2030. #VA252

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https://www.arianespace.com/mission-update/va252-ariane-5-rollout/

Ariane 5 | February 17, 2020
Ariane 5 is in the launch zone for Arianespace's liftoff with JCSAT-17 and GEO-KOMPSAT-2B tomorrow⁠

Arianespace has delivered another Ariane 5 to the launch zone at Europe's Spaceport in French Guiana, clearing the way for its February 18 mission with two satellite payloads: SKY Perfect JSAT Corporation's JCSAT-17 and GEO-KOMPSAT-2B for the Korea Aerospace Research Institute (KARI).


The Ariane 5 that will lift off on Arianespace's Flight VA252 nears completion of its transfer fr om the Spaceport's Final Assembly Building to the ELA-3 launch zone.

Riding atop a mobile launch table, Ariane 5 was transferred from the Spaceport's Final Assembly Building – wh ere payload integration occurred – to the dedicated ELA-3 launch complex. The heavy-lift vehicle is delivered to Arianespace by ArianeGroup as production prime contractor.

With this rollout completed, the final countdown will begin for a February 18 liftoff at the start of a 1-hr., 2-min. launch window opening at 7:18 p.m. local time in French Guiana.

Tomorrow's mission is designated Flight VA252, and has an estimated payload performance of 10,109 kg. – a total that factors in the liftoff mass of its JCSAT-17 and GEO-KOMPSAT-2B spacecraft passengers, plus the dual-satellite dispenser system and integration hardware. Both passengers are to be deployed into geostationary transfer orbit during a 31-min. flight sequence.

Riding in Ariane 5's upper passenger position is SKY Perfect JSAT Corporation's JCSAT-17, built by Lockheed Martin Space. This relay platform is designed to deliver flexible, high-bandwidth communications for users in Japan and the surrounding region from an orbital position at 136 deg. East.

GEO-KOMPSAT-2B, which is located below JCSAT-17 in the launcher payload arrangement, was developed by the Korea Aerospace Research Institute (KARI). It will conduct Earth environment monitoring and ocean monitoring missions and is to be stationed at the 128.2 deg. East orbital location

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• Larger versions of the photos above are available for downloading in the Gallery.
  

Launch window for Flight VA252:

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French Guiana

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UTC

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Washington, D.C.

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Paris

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Japan

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Korea

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Between 7:18 p.m. and 8:20 p.m. on Feb. 18

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Between 22:18 and 23:20 on Feb. 18

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Between 5:18 p.m. and 6:20 p.m. on Feb. 18

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Between 11:18 p.m. and 12:20 a.m. on Feb. 18/19

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Between 07:18 a.m. and 08:20 a.m. on Feb. 19

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Between 07:18 a.m. and 08:20 a.m. on Feb. 19

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 Geoff Barrett  :f09f9a80:‏ @GeoffdBarrett 6 ч. назад

В ответ @ArianeGroup

Of course!

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 한국항공우주연구원‏ @kari2030 43 мин. назад

#천리안위성2B호 발사준비 완료!

모든 준비를 마치고 #Ariane5 ECA 발사체에 실린 천리안위성 2B호는 19일 오전 7시 18분에 발사될 예정입니다.

Спутник Chollian-2B готов к пуску!

После всех подготовительных мероприятий спутник Chollian-2B, установленный на ракете Ariane5 ECA, планируется запустить в 7:18 утра 19-го числа (февраля) по корейскому времени.

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Трансляция пуска

на сайте Arianespace

https://www.arianespace.com/mission/ariane-flight-va252/

или

на ТыТрубе (En)

youtube.com/watch?v=BahLOxxHhNg

или

на ТыТрубе (Fr)

youtube.com/watch?v=UMF7FPLt6tA

Начало трансляции: ориентировочно за 20 мин до пуска

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Lockheed Martin‏ @LockheedMartin 4 ч. назад

Clean Room Launch Pad
It's launch day for JCSAT-17.
Tune in https://lmt.co/38LSu4d
: @Arianespace during encapsulation

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Association des amis de l'activité spatiale dans le monde
3 ч. · 

ARIANE 5 ECA VOL 252 - JCSAT 17 et GEO KOMPSAT-2B

Д-1 - вывоз РН на СК

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Association des amis de l'activité spatiale dans le monde
4 ч. · 

ARIANE 5 ECA VOL 252 - JCSAT 17 et GEO KOMPSAT-2B

Д-0 - ракета на стартовом столе

Спойлер

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https://spaceflightnow.com/2020/02/18/ariane-5-va-252-mission-status-center/

02/18/2020 22:17 Stephen Clark

A European-built Ariane 5 rocket is poised for launch Tuesday with a U.S.-made communications satellite for Tokyo-based Sky Perfect JSAT and a South Korean environmental observatory.

The heavy-lift Ariane 5 launcher is scheduled to take off fr om the Guiana Space Center in Kourou, French Guiana, during a 62-minute launch window opening at 5:18 p.m. EST (2218 GMT; 6:18 p.m. French Guiana time).

The Ariane 5 rolled out of its final assembly building for a 1.7-mile (2.7-kilometer) journey to the ELA-3 launch zone at the European-run spaceport Monday.

After arriving on the pad, teams configured the nearly 180-foot-tall (54.8-meter) rocket for Tuesday's countdown.

The Ariane 5 will loft the JCSAT 17 and GEO-Kompsat 2B satellites on a half-hour mission into geostationary transfer orbit, an elliptical, or oval-shaped, trajectory around Earth ranging in altitude between 155 miles (250 kilometers) and 22,236 miles (35,786 kilometers), with an inclination of 6 degrees to the equator.

The satellites will use their own engines to reach a circular geostationary orbit over the equator, wh ere their speeds will match the rate of Earth's rotation, giving the spacecraft fixed geographic coverage zones over the Asia-Pacific.

The JCSAT 17 spacecraft was built by Lockheed Martin and weighs 12,912 pounds (5,857 kilograms) fully fueled for launch.

Designed for a 15-year mission, JCSAT 17 is owned by Sky Perfect JSAT, a Tokyo-based company. Once in orbit, the new satellite will unfurl a 59-foot-diameter (18-meter) S-band mesh communications antenna made by L3Harris Technologies, formerly known as Harris Corp., of Melbourne, Florida.

JCSAT 17 carries S-band, C-band and Ku-band transponders to provide data connectivity and broadcast services over Japan and other parts of the Asia-Pacific region.

The S-band and C-band payloads on JCSAT 17 will be used by NTT Docomo, a Japanese mobile phone company, to provide mobile connectivity across Japan and surrounding regions, according to Sky Perfect JSAT.

JCSAT 17 will ride in the upper position in the Ariane 5's dual-payload fairing. The smaller GEO-Kompsat 2B oceanography satellite for South Korea is awaiting launch in the lower berth.

The 7,449-pound (3,379-kilogram) GEO-Kompsat 2B spacecraft, built and owned by the Korea Aerospace Research Institute, carries instruments to monitor the environment and oceans across the Asia-Pacific region.

The South Korean-built spacecraft hosts two sensors -- a European-built ocean color imager and a U.S.-made spectrometer -- to collect environmental data.

The GEO-Kompsat 2B satellite is designed to operate at least 10 years, collecting information on marine environments around the Korean Peninsula, fishery ecosystems, aerosol transport in the atmosphere, and air quality over Korea.

The GEO-Kompsat 2B mission follows the launch of GEO-Kompsat 2A on an Ariane 5 rocket in 2018. While GEO-Kompsat 2B is focused on observing the oceans and environment, the GEO-Kompsat 2A spacecraft is a dedicated weather satellite providing information to South Korean forecasters.

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Arianespace‏ @Arianespace 15 мин. назад

#VA252 payload profile: to be operated by #SKYPerfectJSAT, JCSAT-17 will deliver flexible, high-bandwidth communications to users in #Japan and the surrounding region. The satellite was produced by @LockheedMartin and will be deployed first in #Ariane5's launch sequence.




14 мин. назад

As the second satellite to be launched for South Korea's GEO-KOMPSAT-2 program, GEO-KOMPSAT-2B will be used primarily for Earth environment monitoring and ocean monitoring missions. Its deployment 31 minutes after liftoff will complete today's #Ariane5 mission. #VA252

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02/18/2020 23:23 Stephen Clark

The countdown officially commenced at 1055 GMT (5:55 a.m. EST), with clocks at the Guiana Space Center timed for a targeted liftoff at 2218 GMT (5:18 p.m. EST; 7:18 p.m. French Guiana time). The launch window extends for 62 minutes.

Electrical systems checks on the Ariane 5 began at 1145 GMT (6:45 a.m. EST).

Workers also put finishing touches on the launch pad, including the closure of doors, removal of safety barriers and configuring fluid lines for fueling. The flight program for today's launch was also be loaded into the rocket's computer.

After a weather status report, the launch team began the process to fuel the rocket shortly with super-cold liquid hydrogen and liquid oxygen propellants around 1740 GMT (12:40 p.m. EST). First, ground reservoirs and the rocket's helium tank were pressurized, then the fuel lines were chilled down to condition the plumbing for the flow of super-cold liquid hydrogen and liquid oxygen, which are stored at approximately minus 423 degrees Fahrenheit and minus 298 degrees Fahrenheit, respectively.

It was expected to take approximately two hours to fill the Ariane 5 core stage tanks.

A similar procedure for the Ariane 5's cryogenic upper stage commenced at 1850 GMT (1:50 p.m. EST).

Chilldown conditioning of the Vulcain 2 first stage engine began at 1900 GMT (2 p.m. EST), and a communications check between the rocket and ground telemetry, tracking and command systems is planned at 2103 GMT (4:03 p.m. EST).

A final weather briefing will come at T-minus 10 minues, and then the computer-controlled synchronized countdown sequence will begin seven minutes before launch to pressurize propellant tanks, switch to on-board power and take the rocket's guidance system to flight mode.

The Vulcain 2 engine will ignite as the countdown clock reaches zero, followed by a health check and ignition of the Ariane 5's solid rocket boosters seven seconds later to send the 1.7 million-pound launcher skyward.

Five seconds after blastoff, the rocket will begin pitching east from the ELA-3 launch pad, surpassing the speed of sound less than a minute into the mission. The Ariane 5's twin solid rocket boosters will jettison nearly two-and-a-half minutes after liftoff.

Once above the dense atmosphere, the launcher's payload fairing will fall away at an altitude of more than 70 miles — about 112 kilometers -- at Plus+3 minutes, 21 seconds. The Ariane 5's first stage will shut down 8 minutes, 39 seconds, after liftoff, followed moments later by stage separation and ignition of the hydrogen-fueled cryogenic HM7B upper stage engine.

The rocket's upper stage will fire more than 16 minutes, accelerating to a velocity of 21,000 mph, or more than 9.3 kilometers per second, to reach an orbit with a planned high point of 35,786 kilometers (22,236 miles), a targeted low point of 250 kilometers (155 miles) and an inclination of 6 degrees.

The release of the JCSAT 17 satellite will come first at Plus+27 minutes, 40 seconds.

Once JCSAT 17 is deployed, the Ariane 5 rocket's barrel-shaped Sylda 5 dual-payload adapter will be jettisoned at Plus+29 minutes, 21 seconds.

GEO-Kompsat 2B will separate from the lower portion of the payload stack at 31 minutes, 9 seconds.

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 Arianespace‏ @Arianespace 3 мин. назад

Reminder: the launch broadcast for #Ariane5 Flight #VA252 will begin at 7:03 PM local time in French Guiana (22:03 UTC). You can follow along on http://Arianespace.com and #YouTube.

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02/19/2020 00:22 Stephen Clark

Minus-56 minutes. Some statistics on today's flight:

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• 252nd launch of an Ariane rocket since 1979
  
• 317th Arianespace mission
  
• 108th launch of an Ariane 5 rocket since 1996
  
• 21st Sky Perfect JSAT satellite launched by Arianespace
  
• 47th Lockheed Martin-built satellite launched by Arianespace
  
• 8th South Korean satellite launched by Arianespace
  
• 75th launch of an Ariane 5 ECA rocket since 2002
  
• 83rd flight of a Vulcain 2 engine
  
• 107th flight of an HM7B engine
  
• 93rd Ariane 5 launch targeting GTO
  
• 2nd launch from the Guiana Space Center in 2020
  
• 2nd Ariane 5 launch in 2020⁠
  

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https://www.militarynews.ru/story.asp?rid=1&nid=527453&lang=RU

Ракета Ariane 5 стартует на орбиту с японским и южнокорейским спутниками
19.02.2020 00:00:00

Вашингтон. 19 февраля. ИНТЕРФАКС - Ракета-носитель Ariane 5 тяжелого класса Европейского космического агентства в среду должна стартовать на орбиту с японским и южнокорейским спутниками, сообщает французская компания-оператор Arianespace.

Запуск ракеты-носителя Ariane 5 планируется осуществить с космодрома Куру во французской Гвиане в Южной Америке в 01:18 мск.

В рамках миссии на геостационарную орбиту будут выведены японский спутник связи JCSAT 17 и южнокорейский океанографический спутник GEO-KOMPSAT-2B с перигеем 250 км и апогеем 35786 км.

Это уже третий коммерческий запуск компании Arianespace с начала года.

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02/19/2020 00:38 Stephen Clark

Minus-40 minutes. The Ariane 5's first and second stages are fully loaded loaded with cryogenic liquid hydrogen and liquid oxygen propellants.

The 17.7-foot-diameter first stage's Vulcain 2 engine burns 149.5 metric tons, or about 329,000 pounds, of liquid oxygen and 25 metric tons, or about 55,000 pounds, of liquid hydrogen. The cryogenic upper stage's HM7B engine consumes about 14.7 metric tons, or more than 32,000 pounds, of oxygen and hydrogen.

The fluids are stored at super-cold temperatures and naturally boil off in the warm tropical atmosphere in French Guiana. More propellant is slowly pumped into the rocket for most of the countdown to replenish the cryogenic fuel.

The topping sequence ends in the final few minutes of the countdown as the fuel tanks are pressurized and the fueling system is secured.

Built by a consortium of European contractors led by Ariane Group's facility in Vernon, France, the Vulcain 2 engine generates up to 300,000 pounds of thrust during its 9-minute firing. It burns about 320 kilograms, or 705 pounds, of liquid oxygen and liquid hydrogen propellant per second.

The engine's nozzle has an exit diameter of 2.1 meters, or about 6.9 feet. It weighs more than 4,600 pounds and its liquid oxygen and liquid hydrogen turbopumps spin at 12,300 rpm and 35,800 rpm, respectively.

The Vulcain 2 replaced the Vulcain engine used on the initial version of the Ariane 5. The newer engine produces 20 percent more thrust.

The Ariane 5's upper stage is powered by an HM7B engine, a modified version of the HM7 engine used on the upper stage of the Ariane 4 rocket. The 364-pound HM7B engine is manufactured by Ariane Group in Ottobrunn, Germany.

The HM7B engine produces more than 14,500 pounds of thrust in vacuum.

The Ariane 5 configuration with a Vulcain 2 engine and HM7B-powered cryogenic upper stage is known as the Ariane 5 ECA.

The Ariane 5's twin solid rocket boosters are packed with propellant near the launch site in French Guiana before they are assembled and positioned on each side of the cryogenic core stage.

With the rocket now fully fueled for launch, the vehicle weighs 1.7 million pounds. At liftoff, the rocket produces 2.9 million pounds of thrust.

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