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Vega main engine test in Kourou
Date:12/5/2007

instead of the steel outer structure used for the Ariane boosters, the P80 has a lightweight, filament-wound composite casing. It also incorporates a new, simplified design of igniter with a carbon fibre structure.

A new, steerable nozzle fabricated from composite material has been developed, with a simplified architecture made up of fewer elements, to reduce production costs. It also includes complex-formed cast metal parts and a new thermal insulation material. The nozzle joint is more flexible than on previous engines, allowing thrust vector control by means of electromechanical actuators. This is an additional technological improvement on a motor of this size, which usually needs to employ a more complex hydraulic system.

The first data received show that the pressure curve is following perfectly the prediction. It is an outstanding result, said Caroline Cros, the ESA team member responsible for P80 development and I congratulate the industrial team, as well as our CNES and ASI partners, for this achievement.

Today's test was performed on the solid booster test stand (Btiment d'Essai d'Acclrateur Poudre - BEAP) in Kourou, the same facility used for firing tests on Ariane 5's solid-propellant motors. The P80 will now be disassembled for detailed inspection. Some of its components will be returned to Europe for examination and analysis.

The qualification of the P80 motor is a cornerstone. It is the biggest mono-segment, filament-wound-case solid-fuel rocket motor ever developed and this takes us a step closer to the Vega maiden flight, said Stefano Bianchi, ESA's Head of the Vega programme. The programme has a tight schedule for the maiden flight. We can proceed - as from today - with increased confidence. Let's make sure we will meet the next major milestones as scheduled.

About P80 and Vega

The P80 is being developed both as Vega's first stage and as a technology demonstrator. The development is
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Contact: Stefano Bianchi
sfefano.bianchi@esa.int
39-069-418-0800
European Space Agency
Source:Eurekalert

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