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Launches secured for five Sentinel satellites
by Staff Writers
Paris (ESA) Dec 08, 2022

ESA is working with industry towards the first flight of Europe's new Vega-C launch vehicle for more launches, with increased performance, reaching multiple orbits at a similar cost to Vega. This new vehicle will replace Vega at Europe's Spaceport in Kourou, French Guiana. Vega-C is a single body rocket about 35 m high with a mass at liftoff of 210 tonnes. It is able to place about 2200 kg in a reference 700 km polar orbit. This will meet the needs of European institutions and industry.

Using a range of payload carriers, Vega-C will be able to accommodate cargo of different shapes and sizes ranging from multiple small satellites as small as one kilogram up to a single large payload.Vega-C will offer better access to space with new developments extending this to include in-orbit operations and return from space using the fully integrated Space Rider reentry vehicle.

A contract signed between ESA and Arianespace has ensured rides into orbit for five Copernicus Sentinels: Sentinel-1D, Sentinel-2C, Sentinel-3C, and the Copernicus Anthropogenic Carbon Dioxide-A and -B satellites. All the satellites will be launched on Vega-C rockets from Europe's Spaceport in French Guiana and are scheduled to take place between 2024 and 2026.

The contract not only marks an important milestone in the continuity of the Sentinel missions and the European Union's Copernicus programme, but also Europe's autonomous access to space.

It follows the European Union's Framework Contract for Launch Services with Arianespace, signed on 29 November 2022.

ESA signed [today's] contract with Arianespace in the name of and on behalf of the European Union, represented by the European Commission.

Copernicus is the largest provider of Earth observation data in the world - and key to the success of the programme is the suite of Sentinel satellite missions developed by ESA.

The first three Sentinel missions were each designed to operate as a pair of identical satellites, orbiting 180 degrees apart for optimal repeat observations of the planet and data delivery.

Each mission carries different instruments to deliver a wealth of data to feed a range of environmental services offered through the Copernicus programme, which helps address some of today's toughest environmental challenges such as food security, rising sea levels, diminishing ice, natural disasters, and the overarching issue of the climate crisis.

To ensure continuity of data, the Sentinel-1, Sentinel-2 and Sentinel-3 missions were each conceived as four-satellite missions; first the A and B satellites working in tandem and subsequently replaced by the C and D satellites.

Copernicus Sentinel-1A has been in orbit since 2014, followed by Sentinel-1B which was launched in 2016. However, Sentinel-1B came to an end this year owing to a technical issue so will be replaced by Sentinel-1C, which will be launched in the first half of 2023 on a Vega-C rocket.

This new contract covers the launch of Sentinel-1D in the second half of 2024.

Carrying advanced radar technology to provide an all-weather, day-and-night supply of imagery of Earth's surface, the Sentinel-1 mission delivers essential data to monitor sea ice, track icebergs and glaciers, subsidence, oil spills and much more.

The contract also covers the launch of Sentinel-2C in mid-2024.

Sentinel-2A was launched in 2015 and Sentinel-2B was launched in 2017.

The satellites each carry an innovative wide swath high-resolution multispectral imager with 13 spectral bands to help monitor land cover change and planet growth, for example.

The launch of Sentinel-3C, also included in the contract, is envisaged to take place in 2024-2025.

Sentinel-3A was launched in 2016 and Sentinel-3B was launched in 2018.

The satellites each carry a suite of cutting-edge instruments that measure Earth's oceans, land, ice and atmosphere to monitor and understand large-scale global dynamics.

The mission provides essential information in near-real time for ocean and weather forecasting.

ESA is also developing six Copernicus Sentinel Expansion missions to address European Union policies and gaps in Copernicus user needs, expanding the current capabilities of the Copernicus programme.

The contract also includes the launch of the first Copernicus Sentinel Expansion mission: the Copernicus Anthropogenic Carbon Dioxide Monitoring (CO2M) mission.

The CO2M satellites will each carry a near-infrared and shortwave-infrared spectrometer to measure atmospheric carbon dioxide produced by human activity.

This will provide a unique and independent source of information to assess the effectiveness of policy measures, and to track their impact towards decarbonising Europe and meeting national emission reduction targets. CO2M-A and CO2M-B are scheduled to be launched in 2025-2026.

The precise launch periods for the five satellites will be reviewed by Arianespace, ESA and the European Commission, based on the Arianespace launch manifest and the priorities for the Copernicus Programme.

ESA's Director of Earth Observation Programmes, Simonetta Cheli, said, "ESA is thrilled to continue its collaboration with this trusted European launch service, which has been safely placing Europe's precious Copernicus Sentinels in orbit for several years now. Beyond the reliability of the service, we warmly welcome Arianespace's cooperative approach to assisting us with the busy Sentinel launch schedule.

"This new contract to launch five Copernicus Sentinel satellites on the new Vega-C rockets is an important step in not only ensuring continuity of the Sentinel-1, -2, and -3 missions and the data they provide for applications and science, but also for the new CO2M mission.

Arianespace's Chief Executive Officer, Stephane Israel, said, "One week after the signature of the Framework Contract with the European Commission (DG DEFIS), I am thrilled to ink, today, this specific contract with ESA's Director of Earth Observation Programmes, for five new Vega C launches."

"It underlines the ability of Vega-C to answer the needs of the Copernicus programme as well as Arianespace's will to be up to its mission, to guarantee, together with ESA and the European Union, sovereign access to space for Europe."

Succeeding the Vega rockets, ESA's Vega-C deliver increased performance, greater payload volume and improved competitiveness.

Operating from Europe's Spaceport in French Guiana, this rocket extends Europe's autonomy in space by supporting new mission possibilities, including return-to-Earth operations with ESA's reusable Space Rider re-entry vehicle. Vega-C features major enhancements from Vega: two new solid propulsion stages, an uprated upper stage and new fairing, and new ground infrastructure.

Vega-C is a single body rocket nearly 35 m high with a mass at liftoff of 210 tonnes. It can place about 2300 kg in a reference 700 km-polar orbit. Using a new range of payload carriers, Vega-C can accommodate a mix of cargo shapes and sizes, ranging from CubeSats as small as one kilogram up to a single large payload such as a Sentinel satellite.

ESA's Director of Space Transportation, Daniel Neuenschwander, noted that Vega-C complements a new family of launch services together with today's Ariane 5 and later Ariane 6 programmes to ensure Europe maintains flexible, competitive, and autonomous access to space.

"The successful inauguration flight paved the way for Vega-C to win the confidence of European institutions and commercial customers. All the work done by ESA and our partners to realise this new and versatile launch system is delivering an optimal solution for a fast-changing market, starting with Earth Observation."

Related Links
Copernicus at ESA
Rocket Science News at Space-Travel.Com

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New rocket successfully takes to outer space
Beijing (XNA) Dec 08, 2022
Kuaizhou 11, the newest model of carrier rocket developed by China Aerospace Science and Industry Corp, carried out its first successful flight on Wednesday morning, lifting an experimental satellite into space, according to the company. The rocket blasted off at 9:15 am at the Jiuquan Satellite Launch Center in northwestern China's Gobi Desert and soon deployed the Xingyun Transport VDES Experimental Satellite, which is tasked with demonstrating very-high-frequency data exchange system technology ... read more

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