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A description of a full electric propulsion system demonstrator with an energy source based on a battery pack for an ultralight manned Sigma-4 aircraft is presented. The main characteristics and functionality of the main units and devices of the electric propulsion system and its control system are presented.

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This paper provides a description of a hybrid electric propulsion system demonstrator developed at CIAM. The key element of the demonstrator is an electric motor based on the principles of high-temperature superconductivity. Bench tests of several demonstrator units and devices have been successfully carried out. After their completion, bench tests of a full demonstrator were carried out in a high-altitude-climatic chamber.