DRONE Russian patent published in 2014 - IPC B64C29/02 B64C39/02 

FIELD: transport.

SUBSTANCE: invention relates to aircraft engineering, particularly, to VTOL drones. This drone consists of ring-like wing, blower-type propulsor and at least four independent aerodynamic fins. Wing inner surface comprises cylindrical section with diameter D_id and length L_cyl=(0.45÷0.55)D_id, wing chord making b_rw=(1.1÷1.25)D_id, wing profile maximum depth h_max=(0.145÷0.18)D_id, while distance from extreme front point to the beginning of cylindrical section makes L_front=(0.145÷0.165)h_max. Said blower-type propulsor is arranged inside said cylindrical section. Said blower-type propulsor consists of inlet guide vane, impeller and straightener. Said inlet guide vane consists of radial aerodynamic elements connecting said ring-type wing with central body. Said elements feature symmetric profile with constant chord. Impeller vanes and those of straightener feature complex aerodynamic surface.

EFFECT: better aerodynamics, higher efficiency.

7 cl, 12 dwg