Pneumatic high lift device suitable for stealth aircraft

The invention belongs to the technical field of stealth aircraft structure design and pneumatic layout design, and relates to a pneumatic high lift device suitable for a stealth aircraft, which comprises a front wing and a driving device, before the aircraft takes off, the front wings and the covering cap are in a sealing fit state, and the external shape of the central body is kept unchanged; after the flight control system receives a corresponding signal and judges that the aircraft is in a take-off state, a control instruction of front wing screwing-out is sent to the driving device, and the telescopic mechanism is controlled to work firstly, so that the front wing opening cover stretches out by a certain distance; after the front wing extends to a designated position, the telescopic mechanism is controlled to keep unchanged, then the rotary retracting mechanism is controlled to work, the front wing is driven to be screwed out from the upper portion of the covering cap to one side of the central body and r