Two-dimensional supersonic inlet of enclosed variable structure

The invention discloses a two-dimensional supersonic inlet of an enclosed variable structure. The two-dimensional supersonic inlet comprises a machine body, an inlet and a combustor upper panel actuating device, wherein the machine body and a fixed compression plate are of an integral structure; a sector plate is connected with the fixed compression plate through a rotating shaft, and rotates, adjoining the side wall of the machine body, in a sector groove; a movable compression plate moves in a groove and is connected with a combustor upper panel through a rotating shaft; and the combustor upper panel actuating device drives the combustor upper panel to move up and down along a front chute and a rear chute which are formed in the inside wall of the machine body in the vertical direction. By adoption of the two-dimensional supersonic inlet, under the condition of ensuring that the inlet is sealed, the quality of airflow entering a combustor can be directly adjusted through changing the size of a compression a