propulsion plant

  • Rolls-Royce EVTOL concept aircraft with M250 hybrid engines

    Rolls-Royce Revs Hybrid Engine

    Vertiflite May/June 2019

    Rolls-Royce announced on March 14 that the company had conducted successful ground tests of a hybrid system using the company’s ubiquitous M250 gas turbine. The company said that it successfully tested the hybrid version of the M250 gas turbine in a ground demonstration setting in three operating modes: series hybrid, parallel hybrid and...