jet tip

The pressure between the jet tip and the target can reach one terapascal.

She heard metallic banging on the cargo shell as the trim jets tipped their craft around, aligning the main jet downwards.

Fairey Rotodyne - a gyrodyne (jet tipped rotor driven at take off and landing only)

The penetration depth is proportional to the maximum length of the jet, which is a product of the jet tip velocity and time to particulation.

The jet tip velocity depends on bulk sound velocity in the liner material, the time to particulation is dependent on the ductility of the material.