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Second stage - Zefiro 23 Essentially a Z23 SRM Zefiro 23, the engine powering the second stage of the Vega, was entirely designed and manufactured with Italian technologies developed at the Avio plant in Colleferro (Rome). This is another solid-fuel engine using Filament Winding technology. 7.5 m tall, it has a diameter of ca 2 m and weighs 26 tons, 24 of which is accounted for by the liquid fuel. Zefiro 23 has been designed to step into action after 107 seconds of lift-off and to take the launcher from 44 to 100 km from the earth in 80 seconds. This engine passed its first test at the static bench in mid 2006 and passed its qualification test on 27 March 2008. Both tests were carried out at the Interforce Firing Range of Salto di Quirra in Sardinia. |
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Length: 8.451 m Max diameter: 1.910 m Mass at Lift-off: 26 563 kg Burn time: 77.7 s Total Impulse: 67 126 KN s Structural Ratio: 7.50% |
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