Clunk

Clunk Tank
A fuel tank where the fuel pickup (the 'clunk') is at the end of a flexible tube. Gravity ensures that the 'clunk' is always at the bottom, enabling fuel to be collected whatever the orientation of the fuel tank. more......
Cockpit ...

Clunk Term used to describe the weighted end of the fuel pickup line in the fuel tank. The purpose of this is to ensure that the fuel pickup is always in the fuel supply, even when inverted ...