FIELD: aircraft engineering.
SUBSTANCE: power supply device of the multi-rotorcraft comprises a towed external power source with positive buoyancy in the water and controlled buoyancy in the air, electric power cable, battery pack, located inside a sealed waterproof case, a charging level controller with an indication, a charger socket.
EFFECT: increase in the time and range of flight is ensured.
1 cl, 4 dwg
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