**2. Out-of-autoclave (OOA) composites hydroforming approaches**

#### **2.1. Out of autoclave sheet composites forming methods**

#### *2.1.1. Globe machine manufacturing*

The Globe Company (**Figure 1**) now produces a pressurized air driven bladder technology that is used to form body panels for the Chevy Corvette. This process uses 300 psi of air with a 0.5 mm silicone sheet bladder to pressure bag form parts. They are currently supporting volumes of 34,000 vehicles a year [10, 11].

**Figure 1.** Cross sections of processes: (A) globe manufacturing (left); (B) quickstep composites (middle); (C) hydrothermal hydroforming (right).
