Altitude Simulation Bench for VINCI Engine

Kurzfassung

Up to now altitude tests on upper stage engines and satellite systems are indispensable. The need to develop, qualify and accept propulsion systems under actual operating conditions with fully expanded nozzle defines the essential criteria for the test requirements. For the ARIANE 5 launcher evolution the new VINCI upper stage engine will be developed and tested under vacuum conditions. The existing altitude test Bench P4 at the DLR test centre Lampoldshausen will be adapted to the new test conditions. The modifictions, specially the new altitude simulation are designed and the work is nearly finished. VINCI is an Expander cycle-type engine. The Expander cycle design provides high performance and reliability at low cost, while also giving the new upper stage multiple restart capability. An extendable nozzle will give VINCI a specific impulse of 464 sec. in vacuum.