Final answer:
A Fuel Jettison System is a safety mechanism used in aerospace engineering to discard excess fuel from an aircraft or spacecraft. The system must have a security system to prevent accidental activation or unauthorized use.
Step-by-step explanation:
In aerospace engineering, a fuel jettison system is a safety measure. When an aircraft or spacecraft has excess fuel, it can be safely disposed of in accordance with mission requirements or during emergencies. A security mechanism is required for the system to avoid unintentional activation or unauthorized use. In order to make sure that the fuel jettison happens only when intended, this security system usually entails several safety checks and procedures.