Novel two-dimensional adjustable contracting nozzle

The invention relates to a novel two-dimensional adjustable contracting nozzle and belongs to the field of aero-engine nozzles. The nozzle comprises a round-to-square barrel (1), a fixed runner plate (2), side walls (3), actuators (4), link mechanisms (5), a contracting adjustment plate (6), a nozzle enclosure (7) and a shield guide plate (8), wherein the round-to-square barrel (1) serves as a support member of the whole nozzle, the actuators (4), the link mechanisms (5) and the contracting adjustment plate (6) serve as a main carrying capacity adjustment mechanism to achieve outlet area adjustment and vector deflection, and the shield guide plate (8) is used for shielding a hot end member at the front end of the nozzle and guiding exhaust gas at the same time. The nozzle has the advantages that an adjusting range of a throat area of the conventional two-dimensional nozzle is ensured, and the nozzle has good invisibility, a defect of the conventional two-dimensional adjustable contracting nozzle in an invisibility function is overcome, and the nozzle has the advantages of small overall dimension, light weight, simple structure and high reliability.