Method and system for vacuum bagging

A method of vacuum bagging a fiber-reinforced polymer component of an aircraft or spacecraft, comprising:

• arranging a component to be molded in a vacuum bagging assembly for molding the component;
• pre-forming a vacuum bagging film or membrane to a shape or an external geometry of the component to be molded;
• and
• arranging or laying the vacuum bagging film or membrane on or over the component to be molded in the vacuum bagging assembly such that the film or membrane form-fittingly covers the component during molding;
• wherein pre-forming the vacuum bagging film or membrane to the shape or external geometry of the component comprises applying positive pressure to an upper surface of the film or membrane via a blower device for directing a heated air stream onto the film or membrane or via a pressure applicator device for contacting the film or membrane to press same locally against the external geometry of the component.