Water turbine like a true turbine. Fausto Veranzio in his book "Machinae Novae" (1595) described a vertical axis mill with a rotor similar to that of a Francis turbine. Johann Segner developed a reactive water turbine (Segner wheel) in the mid-18th century in Kingdom of Hungary. It had a horizontal axis and was a precursor to modern water turbines. It is a very simple machine that is still produced today for use in small hydro sites. Segner worked with Euler on some of the early mathematical theories of turbine design. In the 18th century, a Dr. Robert Barker invented a similar reaction
Turbine-electric transmission generator is operated when the gas turbine engine is running and also when the motor's battery needs charging. The aircraft gas turbine engine system, patent number 5,867,979, is a gas turbine engine that is mounted on an aircraft, which the system generates and utilizes electrical and other power. The gas engine turbine system’s core is made up of a compressor, a three shaft propulsive gas turbine engine, which has three electrical generators. Each generator is connected to one segment of the shaft, which is part of the engine. Then a propulsive fan is driven by the compressor and the generators.