**2.2. Inflator mechanism**

In case of failure and sinking of AUVs underwater, we designed an airbag system to increase the buoyancy and reduce the overall density of the AUVs. AIRS is installed on top of AUV, an airbag inflated in a fault condition to force the AUVs to surface up. In this section, we are going to introduce how to manufacture an inflator mechanism of the AIRS for the AUV, including the specification analysis and the mechanism design.
