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LIVE! Arianespace Launch Ariane 5

Arainespace will be attempting to Launch their Heaviest Ariane 5 rocket with the heaviest payload ever flown. This will be the last launch before JWST is put on board ariane 5.

Arianespace’s eleventh launch of 2021 with the second Ariane 5 of the year will place its satellite passengers into geostationary transfer orbit. The launcher will be carrying a total payload of approximately 11,210 kg.

The launch will be performed in Kourou, French Guiana.

For its 11th launch of 2021 with the second Ariane 5 of the year, scheduled for October 22, Arianespace will orbit two geostationary satellites: SES-17, a high throughput satellite operated by SES and SYRACUSE 4A, a telecommunications satellite developed for the French Ministry of Armed Forces.

This 111th Ariane 5 mission will mark three new milestones for the heavy-lift European launcher: it will carry an overall performance of approximately 11.2 metric tons, the combined mass of its two payloads will be 10.263 metric tons and the launcher will be precisely 1.5 m taller than usual.

The Ariane launch vehicle and spacecraft SES-17 and SYRACUSE 4A are in stable and safe conditions on the launch pad.

The investigations on the ground equipment being completed and the anomaly having been identified and corrected, the new launch window for Ariane Flight VA255:
Between 09:01 p.m. and 11:30 p.m. Washington, D.C. time, on October 23;
Between 10:01 p.m. and 00:30 a.m. Kourou time, on October 23; Between 01:01 a.m. and 03:30 a.m. Universal time (UTC), on October 24;
Between 03:01 a.m. and 05:30 a.m. Paris time, October 24; Between 10:01 a.m. and 12:30 p.m. Tokyo time, October 24.

SES-17 High Throughput telecommunication satellite provides excellent coverage over the Americas, the Caribbean and the Atlantic Ocean and has been designed to transform the aviation connectivity landscape, address data demands across maritime, government and enterprise segments, as well as to accelerate digital inclusion initiatives. It features almost 200 spot beams, the power of which can be dynamically adjusted in step with customers’ changing requirements. It is also the first SES satellite to have a totally digital payload, powered by an advanced digital transparent processor (DTP), enabling far greater flexibility and efficiency than previously available. The satellite will form a multi-orbit network adaptable to varying bandwidth and latency requirements, operating with SES’s next generation non-geosynchronous satellite system, O3b mPOWER.

SYRACUSE 4A military communications satellite, commissioned by the Armament General Directorate DGA, will allow to connect the armed forces together when deployed. At sea, in the air or on the ground, militaries need secured and powerful communication means in order to be able to exchange information with the command center. Thanks to its state-of-the-art equipment (anti-jamming antenna and digital transparent processor on board), SYRACUSE 4A will guarantee a high resistance to extreme jamming methods. At the service of France’s sovereignty, the satellite will also support NATO and European-led operations.

Ariane 5 is a European heavy-lift space launch vehicle developed and operated by Arianespace for the European Space Agency (ESA). It is launched from the Centre Spatial Guyanais in French Guiana. It has been used to deliver payloads into geostationary transfer orbit (GTO) or low Earth orbit (LEO).

Ariane 5’s cryogenic H173 main stage consists of a large tank 30.5 metres high with two compartments, one for liquid oxygen and one for liquid hydrogen, and a Vulcain 2 engine at the base with a vacuum thrust of 1,390 kN (310,000 lbf). Ariane 5 utilizes two solid boosters, each standing more than 30 meters tall with 237.8 metric tons of propellant. The boosters are ignited on the launch pad once the main cryogenic stage’s Vulcain engine has stabilized its thrust output.

The Ariane 5 ECA launcher version utilizes the ESC-A cryogenic upper stage, which is powered by an HM7B engine. This reliable engine – which also served in the upper stage on Arianespace’s legendary Ariane 4 family of launchers – develops 67 kN maximum thrust in vacuum, and is turbopump-fed and regeneratively cooled. Its thrust chamber is fed by two pumps (liquid hydrogen and liquid oxygen) driven by a gas generator, a common turbine and a gearbox.

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