US Patent 11993373 Unmanned aerial vehicle

An unmanned aerial vehicle, having a main body comprising at least an elongate backbone with a forward end piece and a rearward end piece. The end pieces are wider than the backbone and comprise coupling facilities for respective rotor arms, each said rotor arm configured for supporting motor and propeller assemblies. The unmanned aerial vehicle further comprises a pair of elongated batteries. The end pieces and at least a portion of the backbone form receptacles on both sides of the backbone for releasably receiving respective electric batteries, wherein the batteries, backbone and end pieces form an elongate and substantially rectangular body assembly.