What are the two main methods of fueling aircraft?
What are the two main methods of fueling aircraft? Ground refuelling can be done either through gravity refuelling or pressure refuelling. Gravity refuelling is mostly used for smaller aircraft, while pressure refuelling is used for larger aircraft.
How do aircraft dump fuel before landing?
This can be as easy as the flip of a switch in the cockpit. The system consists of pumps and valves designed to let fuel jettison from nozzles on the wings of the aircraft. Such a system can eject thousands of pounds of fuel per minute, and it looks like a contrail when it's released [source: Scott].