Intelsat 37e, BSat-4a - Ariane 5 ECA (VA239) - Kourou ELA-3 - 29.09.2017, 21:56 UTC

Автор tnt22, 18.07.2017 22:09:16

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tnt22

На сайте Arianespace.com включены часы обратного отсчёта

tnt22

ЦитироватьArianespace Flight VA239 / Intelsat 37e and BSAT-4a

arianespace
 
Опубликовано: 31 авг. 2017 г.
https://www.youtube.com/watch?v=z_s8HVrw4Fkhttps://www.youtube.com/watch?v=z_s8HVrw4Fk (1:44)

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tnt22

Цитировать Stéphane Israël‏ @arianespaceceo 16 мин назад

We have a "green light" for Flight #VA239! This #Ariane5 mission was cleared for Sept. 5 liftoff following today's launch readiness review

tnt22

Arianespace выпустила VA239 Launch Readiness Review (VA239 La Revue d'Aptitude au Lancement)

En: VA239_RAL_EN.pdf - 104974 B, 2 стр, 2017-09-01 14:46:04 UTC

Fr: VA239_RAL_FR.pdf - 106923 B, 2 стр, 2017-09-01 14:46:41 UTC

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tnt22

ЦитироватьArianespace Flight VA239 / Intelsat 37e and BSAT-4a

arianespace

Опубликовано: 1 сент. 2017 г.
https://www.youtube.com/watch?v=vYkesHYSV2Yhttps://www.youtube.com/watch?v=vYkesHYSV2Y (2:46)

tnt22

http://www.arianespace.com/mission-update/va239-approved-for-launch/
ЦитироватьAriane 5 | September 1, 2017

Ariane 5 is cleared for launch on Arianespace's upcoming heavy-lift mission from French Guiana

Arianespace's fifth Ariane 5 mission of 2017 has been given the "green light" for liftoff on September 5 following today's successful launch readiness review, which was conducted at the Spaceport in French Guiana.
Спойлер
This milestone – held prior to each Arianespace flight – confirmed that the heavy-lift vehicle and its dual-satellite payload of Intelsat 37e and BSAT-4a are ready for launch, as well as the Spaceport's infrastructure and the network of downrange tracking stations.

With approval granted, Ariane 5 is cleared for its September 4 rollout from the Final Assembly Building to the ELA-3 launch zone. Liftoff will occur the following day during a 33-minute launch window that opens at 6:51 p.m. local time in French Guiana.

A heavy-lift delivery for Arianespace's Ariane 5
Total payload lift performance for next week's liftoff is approximately 10,838 kg., with the Intelsat 37e and BSAT-4a satellites being deployed to geostationary transfer orbit during a flight lasting 47 minutes. The mission is designated Flight VA239 in Arianespace's launcher family numbering system, signifying the 239th with an Ariane family vehicle.



Positioned in Ariane 5's upper passenger position and encapsulated by the launcher's ogive-shaped payload fairing, Intelsat 37e – produced by Boeing – is the next satellite in Intelsat's high-throughput EpicNG series for launch.

Weighing an estimated 6,440 kg. at liftoff, the spacecraft will provide capacity for wireless backhaul, enterprise VSAT and mobility networks, carrying out its mission from a 342-deg. East orbital slot.

BSAT-4a – Flight VA239's lower passenger, contained in Ariane 5's SYLDA dispenser system – is being launched by Arianespace as part of a turnkey contract between Japan's Broadcasting Satellite System Corporation (B-SAT) and U.S.-based satellite manufacturer SSL.

To be operated from an orbital position of 110 deg. East, this spacecraft will be used for Direct-To-Home (DTH) television relay in Japan, as well as to expand the availability of advanced television services (such as 4K/8K ultra-high definition TV). BSAT-4a will weight approximately 3,520 kg. at liftoff.
 
Launch window for Flight VA239:
[TH]
French Guiana[/TH][TH]Washington, D.C.[/TH][TH]Universal Time (UTC)[/TH][TH]Paris[/TH][/TR][TR][TD]
Between 6:51 p.m. and
 7:24 p.m. on Sept. 5
[/TD][TD]
Between 5:51 p.m. and
 6:24 p.m. on Sept. 5
[/TD][TD]
Between 21:51 and
 22:24 on Sept. 5
[/TD][TD]
Between 11:51 p.m. and
 00:24 a.m. on Sept. 5/6
[/TD][/TR][/TABLE]
[свернуть]

tnt22


tnt22

Цитировать( 290041Z AUG 2017 )

NAVAREA IV 734/2017 (24)

WESTERN NORTH ATLANTIC.
FRENCH GUIANA.
1. HAZARDOUS OPERATIONS, ROCKET LAUNCHING
2120Z TO 2359Z DAILY 05 SEP THRU 05 OCT
IN AREA BOUND BY
 05-18.00N 052-47.40W, 05-22.35N 052-33.83W,
 05-11.16N 052-24.63W, 05-09.00N 052-36.00W.
2. CANCEL THIS MSG 060059Z OCT 17.
Цитировать( 280730Z AUG 2017 )

HYDROLANT 2624/2017 (24)

WESTERN NORTH ATLANTIC.
BRAZIL-NORTH COAST.
DNC 01.
1. HAZARDOUS OPERATIONS, ROCKET LAUNCHING
2030Z TO 2359Z DAILY 05 SEP THRU 05 OCT
IN AREAS BOUND BY:
A. 05-15N 047-29W, 04-43N 047-31W,
 04-46N 048-29W, 05-18N 048-28W.
B. 05-02N 045-36W, 04-45N 045-37W,
 04-50N 047-20W, 05-07N 047-19W.
2. CANCEL THIS MSG 060059Z OCT 17.
Цитировать( 280358Z AUG 2017 )

HYDROLANT 2623/2017 (51,57)

EASTERN ATLANTIC.
DNC 01.
1. HAZARDOUS OPERATIONS, ROCKET LAUNCHING
2128Z TO 0044Z COMMENCING DAILY
05 SEP THRU 05 OCT IN AREA BOUND BY
 01-07N 001-12W, 00-40S 001-25W,
 01-00N 016-49W, 02-57N 016-36W.
2. CANCEL THIS MSG 060144Z OCT 17.

tnt22


tnt22

Цитировать Intelsat‏ @INTELSAT 3 ч назад

With just days until the #launch of #Intelsat 37e on Sept. 5, our mission team is working hard to ensure we're ready for liftoff. Go IS-37e!

tnt22

Цитировать SSL‏Подлинная учетная запись @sslmda 20 мин. назад

The BSAT-4a broadcast satellite, built for B-SAT by SSL, is scheduled to launch tomorrow on an @Arianespace rocket.

tnt22

ЦитироватьArianespace Flight VA239 / Intelsat 37e and BSAT-4a

arianespace

Опубликовано: 4 сент. 2017 г.
https://www.youtube.com/watch?v=M9wFMcU1Nd4https://www.youtube.com/watch?v=M9wFMcU1Nd4 (3:21)

tnt22

Цитировать Stéphane Israël‏ @arianespaceceo 30 мин. назад

Another day, another step closer to liftoff -- #Ariane5 has reached the launch zone for its #VA239 mission w/ #Intelsat 37e and #BSAT-4a

tnt22

http://www.arianespace.com/mission-update/ariane-5-reaches-the-launch-zone-for-tomorrows-dual-satellite-mission/
ЦитироватьAriane 5 | September 4, 2017

Ariane 5 reaches the launch zone for tomorrow's dual-satellite mission


The Ariane 5 launcher for Arianespace Flight VA239 – outfitted with the Intelsat 37e and BSAT-4a satellite passengers – approaches its launch zone at the Spaceport in French Guiana.
Arianespace has delivered another Ariane 5 to the launch zone at Europe's Spaceport in French Guiana, positioning the heavy-lift vehicle for its September 5 flight with two telecommunications satellites: Intelsat 37e and BSAT-4a.

Riding atop a mobile launch table, Ariane 5 was transferred to the ELA-3 launch zone fr om the Spaceport's Final Assembly Building – wh ere its two passengers had been integrated as part of pre-flight preparations.
Спойлер
With the rollout now completed, the final countdown will begin for a liftoff tomorrow at the start of a 33-min. launch window that opens at 6:51 p.m. local time in French Guiana.

For this 239th launch of an Ariane-series vehicle – designated Flight VA239 in Arianespace's numbering system – the payload lift performance to geostationary transfer orbit is an estimated 10,838 kg. The total factors in the mass of Intelsat 37e and BSAT-4a, plus the launch vehicle's dual-passenger dispenser system and satellite integration hardware.

Intelsat 37e is riding as the upper passenger in Ariane 5's payload arrangement, to be released 29 minutes into tomorrow's mission. The spacecraft, with a liftoff mass estimated at 6,438 kg., was built for Intelsat by Boeing using a 702MP platform, and will operate from an orbital position of 342 deg. East.

BSAT-4a – whose launch is part of a turnkey contract between Japan's Broadcasting Satellite System Corporation (B-SAT) and U.S.-based manufacturer SSL – will be deployed from Ariane 5's lower passenger position. Based on the SSL 1300 platform, this satellite's separation will occur 47 minutes after liftoff – completing Arianespace's September 5 mission. BSAT-4a has an estimated liftoff mass of 3,520 kg. and will operate from a 110 deg. East orbital slot.
    [/li]
  • Larger version of the photo above is available for downloading in the Gallery.
Launch window for Flight VA239:
[TH]
French Guiana[/TH][TH]Washington, D.C.[/TH][TH]Universal Time (UTC)[/TH][TH]Paris[/TH][/TR][TR][TD]
Between 6:51 p.m. and
 7:24 p.m. on Sept. 5
[/TD][TD]
Between 5:51 p.m. and
 6:24 p.m. on Sept. 5
[/TD][TD]
Between 21:51 and
 22:24 on Sept. 5
[/TD][TD]
Between 11:51 p.m. and
 00:24 a.m. on Sept. 5/6
[/TD][/TR][/TABLE]
[свернуть]

tnt22


tnt22

http://spaceflight101.com/ariane-5-targets-sunset-liftoff-with-heavy-communications-satellite-duo/
ЦитироватьAriane 5 Targets Sunset Liftoff with Heavy Communications Satellite Duo
September 5, 2017

Europe's Ariane 5 rocket stands ready for a sunset liftoff fr om French Guiana on its fifth mission of the year, targeting a launch window of 21:51 to 22:24 UTC on Tuesday to send two heavy communications satellites into Geostationary Transfer Orbit for Luxembourg's Intelsat and Japan's B-SAT.
Спойлер

Photo: Arianespace/ESA/CNES/Optique Video du CSG

Tuesday's mission follows up on four dual-satellite deliveries by Arianespace in 2017 in addition to a pair of Soyuz launches fr om the South American space center as well as two Vega missions. The VA239 mission is the last Ariane 5 flight to Geostationary Transfer Orbit planned this year with one more flight lined up for December using the Ariane 5 ES/Galileo variant to dispatch a group of four Galileo navigation satellites into Medium Earth Orbit. Additionally, Vega is set for its third flight of the year in November with an Earth-imaging satellite for Morocco.

Tuesday's Ariane 5 mission is carrying the 6,438-Kilogram Intelsat 37e satellite in the upper payload slot while the lighter, 3,520kg BSat-4a rides in the lower payload berth for separation 47 minutes and 15 seconds after liftoff.


Photo: Arianespace/ESA/CNES/Optique Video du CSG

The Boeing-built Intelsat 37e will join Intelsat's satellite fleet as the fifth in the company's Epic-NG satellite series designed to deliver flexible communications on a global scale through the use of the latest advances in satellite technology including multi-band communications packages, frequency re-use and different beam widths to cater to services needing focused coverage for data-intensive applications and large-coverage area broadcasting services.

Intelsat 37e hosts a tri-band communications payload with ninety 36-MHz-equivalent transponders in C-Band covering Europe, Africa, the Atlantic, South America and the Eastern U.S./Canada; 275 36-MHz equivalent Ku-Band transponders create 56 fixed Ku-Band beams over Europe, Africa and South America as well as portions of the Eastern U.S. plus a focused Ku-Band beam over Algeria and a steerable Ku-Band beam to direct additional coverage wh ere it is needed; a single Ka-Band spot beam offers high throughput services with a total data throughput of 45Gbit/s across the satellite.

As the fifth in the Epic-NG constellation, Intelsat 37e is the first in the series to use advanced power-sharing capabilities and interconnectivity between all its communication bands. The satellite will operate for at least 15 years, replacing the 16-year old Intelsat 901 satellite at a position of 18°W over the Atlantic Ocean.

>> Intelsat 37e Overview


Photo: Arianespace/ESA/CNES/Optique Video du CSG

BSat-4a, built by Space Systems/Loral for operation by the Broadcasting Satellite System Corporation, is an all-Ku-Band satellite for the sole purpose of Direct-to-Home television distribution to Japan and the Asia-Pacific Region.

Based on the popular SSL-1300 platform, BSat-4a will spiral up into a position at 110° East wh ere it will provide expansion and replacement coverage, eventually taking over from B-SAT's first third generation satellite that launched in 2007.

BSat-4a hosts 24 Ku-Band transponders for Direct-to-Home broadcasting in standard and high definition as well as 4K Ultra-HD and the advanced 8K resolution. The satellite was commissioned for a 2017 liftoff to provide the maximum margin between its liftoff and the 2020 Tokyo Olympics that are expected to the broadcast by the satellite in 4K and 8K resolution with B-SAT acquiring the necessary licenses for 4K/8K broadcasting in late 2015.

>> BSat-4a Satellite Overview

Preparations for this latest Ariane 5 launch campaign began in the second half of July when the MN Toucan, one of two sea-going vessels operated by Arianespace, arrived in French Guiana with the components of the Ariane 5 launch vehicle. Stacking of the vehicle was also in progress in July, starting with the installation of the 30.5-meter tall EPC Cryo Core on one of two operational launch tables followed by the attachment of the twin Solid Rocket Boosters that were assembled at a separate facility at the space base. Next was the installation of the ESC-A second stage, already integrated with the Vehicle Equipment Bay.


Photo: Arianespace/ESA/CNES/Optique Video du CSG

The two satellites arrived in Kourou in the first week of August to undergo the standard pre-launch processing flow comprising a series of stand-alone tests and fit checks before the two passengers were loaded with propellants for their trip into Geostationary Orbit and stationkeeping over their 15-year service life.

Combined with the adapters and the Sylda dual-payload dispenser, the two satellites create a total payload upmass of 10,838 Kilograms – a close second to Ariane 5's heaviest GTO delivery earlier this year with a payload of 10,865 Kilograms. The two satellites took their positions on the Ariane 5 by August 29 with the 7.9-meter tall Intelsat 37e sitting atop the Sylda and BSat-4a, standing 5.1m tall, fastened to the launcher's second stage and riding underneath the Sylda structure.

Ariane 5 received its launch clearance on September 1st via a clean Launch Readiness Review and final arming was completed over the weekend and on Monday. The 55-meter tall launcher emerged from its Final Assembly Building on Tuesday and was set down on the ELA-3 launch pad for final close outs and charging of the rocket's Helium pressurization system before entering an 11-hour and 23-minute countdown at 10:18 UTC on Tuesday with power-up of the launch vehicle expected at 10:58 UTC for an extensive checkout campaign.

Propellant loading is initiated five hours prior to T-0 with the chilldown of transfer lines and propellant tanks before supercold Liquid Oxygen stored at -183°C and Liquid Hydrogen at -253°C are pumped into the two stages of the rocket. The 5.4-meter diameter first stage will enter propellant loading first at T-4 hours and 38 minutes followed 70 minutes later by the second stage. Loading of the rocket with 184 metric tons of propellant will take approximately two hours and tanks will be kept at flight level throughout the rest of the countdown.



A repetition of telemetry checks occurs inside L-90 minutes ahead of the final set of preparatory steps to get Ariane 5 and all ground systems ready for the seven-minute Synchronized Sequence. Switching into fully computer-controlled mode, Ariane 5 will check off its final countdown milestones – notably the pressurization of tanks, the transfer to internal power, pyrotechnics activation and the handoff to Ariane's computers four seconds before ignition.

When clocks hit zero, the Vulcain 2 engine will ignite to soar to a launch thrust of 960 Kilonewtons with seven seconds of engine monitoring before the twin Solid Rocket Boosters are ignited – marking the point of no return.

Upon ignition of the boosters, Ariane 5 will jump off its launch pad with a thrust of 1,420 metric ton force – balancing in a vertical posture for less than ten seconds before initiating its pitch and roll programs to align itself with a due easterly departure path for a quick flight across the Atlantic Ocean.


Photo: Arianespace/ESA/CNES/Optique Video du CSG

The EAP boosters will deliver over 90% of the vehicle's total thrust, each burning through 237 metric tons of propellant to help accelerate Ariane 5 to a speed approaching two Kilometers per second. Ariane 5 will push through the speed of sound just 49 seconds into the flight and experience maximum dynamic pressure just after passing the T+1-minute mark.

The twin boosters will separate from the still-firing core stage at T+2 minutes and 22 seconds, using a pyrotechnic separation system to drop away from the rocket, headed toward a crash landing in the Ocean. With the boosters gone, it will be up to the Vulcain 2 engine to continue pushing Ariane 5 towards orbit with a vacuum thrust of 136 metric ton-force.

The protective payload fairing will be jettisoned three minutes and 23 seconds into the flight when Ariane 5 will have departed the discernible atmosphere. Shutdown of the core is expected at T+8 minutes and 56 seconds with separation of the spent rocket stage seven seconds later to clear the way for the critical second stage burn. Ignition of the HM-7B engine will come four seconds after staging on a burn of 16 minutes and 25 seconds to push the stack into a highly elliptical orbit with a thrust of over six metric tons.


Ariane 5 Launch Profile – Credit: Arianespace

The VA239 mission is targeting an orbit of 250 by 35,706 Kilometers, inclined 6.0 degrees with the upper stage aiming for an injection speed of 9.4 Kilometers per second. Powered flight will end at T+25 minutes and 31 seconds, marking the start of the complex ballistic phase to prepare for the separation of the satellites.

Intelsat 37e will depart the Ariane 5 rocket 29 minutes and 50 seconds into the mission with the second stage swiftly swinging around to set up for the jettisoning of the Sylda adapter just two minutes later. BSat-4 – riding shotgun on Tuesday – will remain attached for another 15 minutes while the second stage maneuvers into the proper position for the release of the smaller of the two passengers at just over T+47 minutes to conclude the 95th flight of the Ariane 5 rocket.
[свернуть]

tnt22


tnt22

Цитировать Chris B - NSF‏ @NASASpaceflight 12 мин. назад

You know what your Tuesday needs? A rocket launch, that's what! Ariane 5 ECA dual payload launch (21:51 UTC) Article and coverage incoming!