FIELD: engines and pumps.
SUBSTANCE: propulsion engine has rotor with at least one rotary blade and drive engaged with said blade to turn it. Drive (1) comprises at least one electric power source (2, 2'), electric drive (3) to turn aforesaid blade and power supply circuit (4, 4') connecting said electric power source (2, 2') with said drive (3). Said drive incorporates extra inertial device connected with said power supply circuit (4, 4'). Said inertial device (5) is designed to convert electric power supplied from said circuit (4, 4') into mechanical energy, to store the latter and to convert it into electric power for said electric power supply circuit (4, 4').
EFFECT: higher efficiency of blade drive.
9 cl, 2 dwg
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