Sentinel-2B – Vega (VV09) – Куру ZLV – 07.03.2017 01:49 UTC

[tnt22]

(2:56)

[tnt22]

ЦУП в полной готовности...

ESA Operations‏Подлинная учетная запись @esaoperations 7 мин. назад
 
Mission control: Happy faces & thumbs up at #ESOC today for the 'dress rehearsal' for #Sentinel2Go launch 7 March #vega #VV09 #sentinel2

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Dress Rehearsal еще идет, до "отбоя пуска" еще почти 40 минут.

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ESA Operations‏Подлинная учетная запись @esaoperations 11 мин. назад
 
Why launch is at the uncivilised hour of 2:49CET - explained by the wizards who calculate where #Sentinel2Go must go http://blogs.esa.int/eolaunches/2017/03/02/sentinel-2b-flight-dynamics-green-for-launch/ ...
 

http://blogs.esa.int/eolaunches/2017/03/02/sentinel-2b-flight-dynamics-green-for-launch/

Posted on March 2, 2017 by Daniel

 Sentinel-2B flight dynamics: GREEN for launch!
 
Today's blog post was contributed by Francesco Affaitati, fr om the flight dynamics team at ESOC supoporting the Sentinel-2 mission.

The Sentinel-2B flight dynamics team are GREEN for launch!
 

Спойлер

Sentinel-2 is the medium spatial resolution optical mission of Europe's Copernicus programme. A pair of identical 1.1-metric-ton satellites will circle the Earth in a sun-synchronous, polar orbit at an altitude of 786 kilometres, fully covering the planet in just five days. The multi-spectral instrument (MSI) will generate optical images in 13 spectral channels in the visible and short-wave infrared range down to a resolution of 10 metres with an image swath of 290 kilometres. Credit: Airbus D&S

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After months of preparation, integration tests and operational simulations, the flight dynamics system is now configured to support the launch on 7 March 2017 at 01:49 UTC (02:49 CET).

On that day, the second satellite of the Sentinel-2 dual-spacecraft mission, Sentinel-2B, will be injected into orbit to complete the constellation and shift the misison into high gear.

The Sentinel-2 mission comprises a constellation of two identical polar-orbiting satellites following the same ground track, and separated by an argument of latitude difference of 180°. The Sentinel-2 orbit cross the equator at a specific time of day (10:30 local) so as to guarantee the best illumination conditions for the optical acquisitions of the main instrument, the MSI.
 
About that launch window...

To achieve this orbit and target the 10:30 local time (when the satellite cross the equator while on the 'downward' arc of its orbit), the Vega launcher can lift off at only one moment in the day.

Vega launches from Europe's Spaceport in Kourou, French Guiana, and is designed to be launched toward the north from Kourou, so as to facilitae recovery of the boosters over open ocean.

To calculate the lift-off time, various factors are taken into account, from the length of the ascending trajectory and the expected thrust performance of each Vega stage to the wind conditions. In case of any delay caused by a technical issue, even if it would only take a short time to fix, the next launch window opportunity will only come around 24 hours later.

The launch, of course, is just the start of operational activities for the flight dynamics team at ESA.

From the moment Vega lifts off, we will have to wait almost one hour until separation of the satellite from the Vega upper stage. At this point, we will begin conducting one of the most critical activities in any new mission: the first orbit determination, which will precisely identify the actual orbit of the satellite.
 

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First 'ODet'

In fact a spacecraft is never perfectly injected into its designed trajectory, as any imprecision in launcher performance will be reflected in the spacecraft's actual orbit. This is one reason why spacecraft are equipped with thrusters and propulsion systems, enabling them to be moved very precsiely into a final orbit.
 

Animation of the constellation orbits 180° apart at 00:18 in this video

Contrary to the Sentinel-2A launch in 2015, this time the satellite will be injected into an orbit 11 km below the final, desired orbit (to avoid any risk of collision with the already-in-orbit twin!). Therefore, on top of the (never so) standard activities to correct the launcher orbit injection errors, which will keep us and the mission control team busy for three days around the clock, we will have to plan for a 'raising manoeuvre sequence' in order to bring the satellite into its final orbit.

This is not a trivial activity, as, at the same time, we have to also ensure that the spacecraft can be properly tracked by the ground station antennas (i.e. that the antenna operators know exactly wh ere to point the antenna before each communication slot), cope with any uncertainties that a new spacecraft not-yet-fully commissioned may give, handle any uncertainties that the space environment throws at us and – last but not least – be ready to deal with space debris.

We are really looking forward to this launch, and to being part of the larger 'team of teams' working to complete the Sentinel-2 constellation. We are proud to support Copernicus and the European Commission!
 

Sentinel-2B FDyn Team - and they're great with Photoshop, too! Credit: ESA

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[tnt22]

Stéphane Israël‏ @arianespaceceo 29 мин. назад

#MadeInEurope: Next week #Vega aims to deliver success on Flight #VV09 for our long-time valued partners @ESA @EU_Commission
 
 

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http://www.esa.int/Our_Activities/Observing_the_Earth/Copernicus/Sentinel-2/Sentinel-2B_poised_for_liftoff

Sentinel-2B poised for liftoff
 
 
Sentinel-2B in launch tower
 
 2 March 2017
 
With liftoff just few days away, the next Sentinel satellite for the Copernicus environmental monitoring programme is positioned in the launch tower at Europe's Spaceport in Kourou, French Guiana.
 
Carrying a multispectral camera to image Earth's changing land and vegetation, Sentinel-2B is set for launch on 7 March at 01:49 GMT (02:49 CET; 22:49 local time on 6 March).
 
It will join its twin, Sentinel-2A, which has been in orbit since June 2015. With them circling on opposite sides of Earth and each providing 290 km-wide coverage, the time it takes to image the globe will be cut in half to five days, and to just three days over Europe.

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 The satellite was shipped to Kourou in early January, where it has been tested, fuelled, encapsulated in its Vega rocket fairing, rolled out to the launch pad and hoisted into the tower.

 The upper stage of the rocket has also been fuelled and the teams are now preparing for countdown.


Sentinel-2 global coverage
 
 Today, Arianespace, the Sentinel-2 team in Kourou and ESA's mission control in Darmstadt, Germany, are performing a full rehearsal.
 
 Paolo Laberinti, ESA's Sentinel-2 launch campaign manager, said, "It's been a very intense couple of months for the ESA and the Airbus Defences and Space team here in Kourou, but thoroughly checking and preparing the satellite for liftoff has gone very well and we are really looking forward to saying a fond farewell to our baby when it lifts off on Monday night."
 
 
Closing Sentinel-2B fairing
 
 Francois Spoto, ESA's Sentinel-2 project manager, added, "We're were very proud to see the Sentinel-2A launch two years ago and now it's almost time for Sentinel-2B to join its twin.
 
"The mission is not just down to us though, it is thanks to the close collaboration we have with the European Commission, an industrial consortium of about 60 companies led by Airbus Defence and Space, France's CNES space agency and the Copernicus service providers – and I'm sure everyone is as excited as we are."
 
As for all the Sentinel missions, Sentinel-2 has been built for the Copernicus programme, this time focusing largely on Earth's vegetation.
 
Ensuring land is used sustainably while meeting the food and wood demands of a growing global population is one of today's biggest challenges. The Copernicus land service provides information to help respond to global issues such as this, as well as local areas that are prone to specific challenges.
 
The state-of-the-art Sentinel-2 mission provides not only information to improve agricultural practices and map changes in land cover, but it also helps to monitor the world's forests and to detect pollution in lakes and coastal waters.
 
 
Chiapas forest land-cover map
 
 In addition, images of floods, volcanic eruptions and landslides can contribute to disaster mapping and help humanitarian relief efforts.
 
Many of these applications rely on satellite images that are repeated very quickly – especially in the growing season. Once Sentinel-2B has been commissioned, users will have images of all Earth's land surfaces, large islands, and inland and coastal waters between latitudes 84°S and 84°N every five days.
 
The Copernicus programme is led by the EU and the EC while ESA coordinates the Copernicus space component.

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[tnt22]

Прямая трансляция ESA на Livestream из Куру 2017-03-07 в 02:30 CET - 01:30 UTC, 04:30 ДМВ

https://livestream.com/ESA/Sentinel-2B-Launch

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http://www.esa.int/Our_Activities/Operations/Dressed_to_thrill

Dressed to thrill
 
 
Sentinel-2
 
 3 March 2017
 Mission teams on two continents completed a pre-launch 'dress rehearsal' yesterday, ensuring everything is ready for Sentinel-2B liftoff next week.
 
A full dress rehearsal yesterday at ESA's mission control centre in Darmstadt, Germany, and Europe's Spaceport in Kourou, French Guiana, enabled teams to practice one final time the complete countdown and launch sequence before the real thing on 7 March.
 
Sentinel-2B is set for liftoff next Tuesday at 01:49 GMT (02:49 CET) on a Vega rocket, which will deliver the sophisticated Earth-watching satellite into orbit about an hour later.
 

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In space, the new spacecraft will join its identical twin, launched in 2015, completing the two-ship constellation and effectively doubling the coverage provided by Europe's 'colour vision' mission.

 The two satellites will be placed in the same orbit, separated by 180° and, every five days, will jointly image land, large islands and inland and coastal waters, optimising global coverage and data delivery for numerous applications.
 
The two spacecraft are part of a new fleet of Sentinels that are delivering the data and images that are central to Europe's ambitious Copernicus programme.
 
 Final simulation training
 In yesterday's final 'sim', teams at ESA mission control worked with the joint ESA, Arianespace and industry launch team in Kourou to rehearse the launch sequence.
 
This included configuring the launcher and spacecraft for flight, stepping through the pre-launch countdown and then following the (simulated) flight of the Vega rocket and Sentinel-2B through to the receipt of first signals fr om the satellite and deployment of the solar array.
 
 
When mission controllers take over
 
 For ESA's mission controllers, the dress rehearsal was the last in an intensive series spanning the past several months. During the rehearsal, engineers at ESOC received live signals from the satellite via an umbilical connection that will be disconnected shortly before launch.
 
 Critical days
 On Tuesday, the Vega rocket will provide Sentinel-2B with a spectacular ride into orbit, aiming to reach just below the final target of about 786 km altitude, wh ere its twin is already flying.
 
The satellite will later use its propulsion thrusters to be nudged up to match Sentinel-2A's altitude, with the two flying in a carefully planned constellation.
 
 
Team training
 
 Mission controllers expect to receive the satellite's first signals around 60 minutes after lift off.
 
Receipt of signals will mark the start of intense activity that will see teams working 24 hours a day to shepherd the new satellite through its first few critical days in orbit.
 
Engineers must ensure that the solar array has deployed so as to provide power, that the spacecraft is stable and properly oriented and that all systems are working as expected.
 
 Teamwork
 Yesterday's rehearsal involved an extended 'team of teams' − satellite engineers, specialists working on tracking stations and on the sophisticated hardware and software used to control the satellite and distribute its data as well as experts working in areas like flight dynamics and training.
 
By next Friday, teams expect to have the craft configured for normal flight in its target orbit and to revert to normal work hours for the subsequent three-month satellite commissioning phase including the main imaging instrument (MSI) in-orbit verification.

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Commentary from Arianespace Launch Site Operations Manager Frédéric Facchin (2:10)

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tnt22 пишет:
Mission controllers expect to receive the satellite's first signals around 60 minutes after lift off.

Разделение + 48 секунд это самое раннее, когда можно ожидать первый фрейм телеметрии.

[Pirat5]

Похоже, что и все остальные Часовые (Sentinel) рано или поздно переползут с Рокота на Вегу.

http://space.skyrocket.de/doc_lau_det/rokot-km.htm
Planned:
Rokot-KM xx.11.2017 Pl LC-133/3 Sentinel 3B
Rokot-KM xx.xx.2017 Pl LC-133/3 Sentinel 5p

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Склеил с средним сыном творение наших баллистиков. Наглядно. 

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Pirat5 пишет:
Похоже, что и все остальные Часовые (Sentinel) рано или поздно переползут с Рокота на Вегу.

5p точно на Рокоте, на той неделе дату зафиксировали (снова    ), 3B тоже, если не будет "динамо" от известно кого. Надеюсь, не будет.
А Сентинелы C/D на Веге и Союзе (или Веге C)

[tnt22]

(2:14)

[tnt22]

К пуску ГОТОВЫ! Ждём RAL...

Copernicus EU‏ @CopernicusEU 1 ч. назад

2B PR not 2B: teams, systems & ground facilities GREEN for #Sentinel2 launch! #Sentinel2Go
 

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Дали RAL

ESA‏Подлинная учетная запись @esa 4 мин. назад
 
Update from Kourou: #VV09 with #Sentinel2 B Launch Readiness Review has authorised start of countdown for launch 7 March at 02:49 CET.

Upd.

ESA Operations‏Подлинная учетная запись @esaoperations 2 мин. назад
 
Mission control teams at ESOC to conduct their final pre-launch briefing tomorrow - making sure we're ready to take over #Sentinel2Go #VV09

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tnt22 пишет:
Mission control teams at ESOC to conduct their final pre-launch briefing tomorrow

С Сентинелом-2А была ровно та же засада - предпусковой брифинг в воскресенье, епрст.

[Salo]

 Stéphane Israël‏ @arianespaceceo  6 мин.6 минут назад
#Copernicus, #Sentinel-2B will join you soon! The launch readiness review clears #Vega for Monday's Flight #VV09
 

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Соб-сно, сам RAL

Arianespace‏ @Arianespace 2 мин. назад

#Vega is cleared for flight by launch readiness review. For more #VV09 info, check out the latest Mission Upd ate

http://www.arianespace.com/mission-update/vega-vv09-launch-readiness-review/

Vega                                                          March 4, 2017
 
Vega is cleared for Arianespace's March 6 liftoff with Sentinel-2B

Arianespace's third flight of 2017 has been approved for its March 6 evening liftoff from French Guiana following today's Launch Readiness Review for the lightweight Vega mission to Sun-synchronous orbit with Europe's Sentinel-2B Earth observation satellite.



The review, performed at the Spaceport in French Guiana, confirmed the "go" status of the four-stage Vega and its 1,130-kg. Sentinel-2B payload, along with the Spaceport's launch site infrastructure and the network of trajectory-following tracking stations.

All is now se t for a liftoff at precisely 10:49:24 p.m. local time in French Guiana (1:49:24, Universal Time – UTC on March 7) for a mission lasting 57 minutes, 57 seconds.

Спойлер

Designated Flight VV09 in Arianespace's launcher family numbering system, this will be the ninth with Vega since its Spaceport introduction in February 2012, and is one of up to 12 missions planned by the launch services company during 2017. Previous flights this year were a heavy-lift launch with Ariane 5 on February 14, which placed the SKY Brasil-1 and Telkom 3S relay satellites into geostationary transfer orbit (GTO); and a medium-lift Soyuz launch on January 27 that delivered Europe's first "SmallGEO" relay platform, Hispasat 36W-1, into GTO.

 

Vega's mission to Sun-synchronous orbit

After its deployment by Vega on Flight VV09, Sentinel-2B will operate at an altitude of approximately 786 km., with a design lifetime of seven-plus years. The spacecraft is equipped with a multispectral, wide-swath, high-resolution optical imaging instrument, with the primary goal of monitoring land masses and coastal zones around the world. Data collected by Sentinel-2B is to be used for applications involving the monitoring of vegetation, soil types and habitats.



Sentinel-2B is the fourth Copernicus program satellite to be orbited by Arianespace, following the successful launch of Sentinel-1A on a Soyuz in April 2014, the lofting of Sentinel-2A aboard a Vega in June 2015, and the deployment of Sentinel-1B by a Soyuz in April 2016.

The development of Sentinel-2B results from a close collaboration involving the European Space Agency, the European Commission, service providers and data users. A consortium of companies led by Airbus designed the mission and built the spacecraft, supported by the French CNES space agency and the DLR German Aerospace Center.

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RAL в PDF

VV09_RAL_EN.pdf - 63242 B
VV09_RAL_FR.pdf - 62873 B