Largest Ever Solid Rocket Motor Set for First Hot Fire

P120C awaits first hot firing. (Credit: ESA)

KOUROU, French Guiana – 9 July 2018 (ESA PR) — This week, the largest solid rocket motor ever built in one piece will be test fired at Europe’s Spaceport in French Guiana for the first time.

This important milestone validates the booster for use on Vega-C next year and on Ariane 6 from 2020.

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ESA Council Approves Completion of Ariane 6, Transition from Ariane 5

Ariane 6 variants (Credit: ESA–David Ducros,)

PARIS — 14 June 2018 (ESA PR) — The ESA Council met today in Paris to discuss the path towards the future exploitation of Ariane 6.

In view of the progress made in the Ariane 6 programme, Participating States have decided on the completion of the development up to full operational capability and agreed to fund industrial incentives associated with the development of Ariane 6 and P120C solid rocket motor.

Participating States also committed to start with the first step of the Ariane 6 and P120C Transition Programme. This programme supports the evolution from Europe’s Ariane 5 to full operational capability of Ariane 6.

Ariane 6 is Europe’s new-generation launcher, designed to secure guaranteed access to space for Europe at an affordable price for European institutional users. It will operate in two configurations: Ariane 62 is fitted with two P120C strap-on boosters while Ariane 64 has four. Ariane 6’s maiden flight is planned for mid-2020.

P120C is the largest carbon-fibre solid propellant booster ever built in one segment at almost 13.5 m long and about 3.4 m in diameter. Two boosters will be used on Ariane 6’s maiden flight in 2020.

Avio Tests New PC120C Solid Rocket Motor Booster Casing

P-120C solid rocket motor booster casing. (Credit: Avio)

Avio reports it has completed operational tests for the first P120C sold rocket motor booster casing, which will be used on the new Ariane 6 and Vega C launch vehicles.

“The mechanical tests were carried out using a platform specifically designed and built to simulate the actual conditions of a space launch: pressurization inside the combustion chamber, engine thrust and mechanical loads resulting from the launcher’s operational phases,” the Italian company said in a press release.

“The technological casing, equipped and complete with instrumentation, was subjected to a test cycle up to the maximum engine operating pressure as well as a series of axial load cycles, which demonstrated that the prototype fully corresponded to engineering predictions for its mechanical behaviour,” the company added.

Vega C is set for its first launch in 2019. Ariane 6 is scheduled for the following year.

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