Turbopump Vinci - Avio.com
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Turbopump Vinci


As for the Ariane 5 launcher, Avio participate in the Ariane 6 program also for the liquid propulsion. For the Ariane 6 program Avio has the responsibility to develop two turbopumps:

  • The liquid oxygen turbopump for the main cryogenic motor Vulcain 2, as for the Ariane 5 program;
  • The development of the liquid oxygen turbopump for the Vinci motor, that will be the cryogenic upper stage of this new European launcher.

Turbopumps are one of the main components in liquid propellant engines for aerospace use. These machines offer extreme performance, as they are designed to feed the combustion chamber with propellants drawn from tanks that are pressurized to hundreds of bars.

They have enormous power density (such as 6500 HP in a mass of 250 Kg), are exposed to extreme environments (at temperatures ranging from cryogenic to over 1000°C), highly aggressive liquids such as liquid oxygen, and astounding speeds of rotation.

Because of Avio’s lengthy history and broad experience in the design and construction of turbo-machines, the European Space Agency (ESA) entrusted Avio with the task of developing the turbopump Vinci.


The Vinci liquid oxygen turbopump has a lower flow rate and outlet pressure than the Vulcain 2 (first stage). Avio developed and tested numerous key technologies for the unit, including a new, more compact type of Dynamic Seal Package (DSP) which acts as the physical separation between the hot gasses that feed the turbine (+600°C) and the liquid oxygen on the pump side (-180°C).
Avio uses various facilities and dedicated test benches for the development of its liquid oxygen turbopumps and works jointly with the University of Liege in Belgium.


Main Characteristic:

  • Inlet pressure: 2,5 bar
  • Inlet temperature: 91 K
  • Flow rate: 33 kg/s
  • Outlet pressure: 80 bar
  • Rotor speed: 18.000 rpm
  • Power: 0,5 MW
  • Weight: 50 kg


  • Length: 400 mm
  • Diameter: 250 mm


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