Thrust vectoring nozzle based on coanda effect

The utility model discloses a thrust vectoring nozzle based on the coanda effect, and belongs to the technical field of fluid propulsion. The device comprises a hollow pipe body which is provided with an inner wall and an outer wall; a gap is preset between the inner wall and the outer wall to form a closed cavity, and the cavity is axially divided into a plurality of secondary flow cavities; the plurality of air inlets are formed in the outer wall, and the plurality of air inlets are communicated with the plurality of secondary flow cavities in a one-to-one correspondence manner; a plurality of air outlets are formed in the corresponding inner wall of each secondary flow cavity, and the air outlets are located in the side away from the air inlet; the control part is arranged on the outer wall, corresponds to the air inlet and is used for adjusting the air inflow of the air inlet; on one side close to the air outlet, the joint of the inner wall and the outer wall is a Coanda curved surface. According to the u