Inflatable control surface of large aerostat

The invention discloses an inflatable control surface of a large aerostat. The control surface uses an inflatable structure, and consists of an inflating part and a rigid framework; the inflating part is a sealed airbag which is formed by connecting a dividing sheet and a cover sheet and has a certain appearance after being inflated; the rigid framework comprises a control surface connecting rod, a rotating shaft, a connecting piece of a driving device and the like; and the rigid framework is fixedly buckled on the outer surface of the inflating part through a wire. The inflatable control surface provided by the invention provides the control surface structure which is suitable for a tail fin of the large aerostat, and has the characteristics of light weight, convenience in transportation and the like.