초록

In a NOTARTM(No tail rotor) system for a helicopter, the addition of vortex generators in the longitudinal slots or nozzles which produce the circulation control portion of the system which combines with a jet thruster and fluid resource to replace the tail rotor.

대표청구항 ▼

An anti-torque and yaw control system for a helicopter having a tail boom generally oriented perpendicular to the down wash of the helicopter main rotor when in the hovering mode, comprising: at least one linear nozzle having an opening extending longitudinally in said tail boom and disposed to disc

An anti-torque and yaw control system for a helicopter having a tail boom generally oriented perpendicular to the down wash of the helicopter main rotor when in the hovering mode, comprising: at least one linear nozzle having an opening extending longitudinally in said tail boom and disposed to discharge a jet of fluid tangentially to the surface of said tail boom so as to produce a thin layer of fluid flow; at least one means to produce at least one vortex intermediate the ends of said jet discharge from said at least one linear nozzle so as to intercept said fluid flow at said at least one vortex; a jet thruster located in the distal end of said tail boom and capable of directing fluid to opposite sides of said tail boom so as to produce variable side forces on said tail boom; and means to supply fluid to both said at least one linear nozzle and said jet thruster.