The curvature of airplane shape was more heteromorphosis

and complex and convex curvature skin was largely applied with the improvement of the airplane aerodynamic and stealth performance requirement

then the traditional forming method has not completely met the configuration requirements of new generation fighter. The basic principle and key technology of sheet hydroforming was introduced and the key parameters

such as chamber pressure

thickness reduction ratio

sheet instability and curation tolerance were analyzed and optimized by using finite element simulation method during sheet forming process based on the background of complex hyperbolic skin production of a certain type airplane. The industrial production was guided by the results of numerical simulation. The hydroforming technology provided a new method of industrial manufacture for large complex concave and convex curvature skin parts and met the requirements of the concave and convex curvature shape skin for the new generation of airplane

which had proved through theoretical analysis and industrial procetice.