What is one feature of a combination fuel system?

A combination fuel system is designed to utilize both gravity feed and fuel pumps to supply fuel to the aircraft’s engine. This feature enhances the reliability and efficiency of the fuel delivery process. The gravity feed aspect allows fuel to flow naturally due to gravity from the fuel tanks to the engine, which can be advantageous during certain conditions, such as when the aircraft is operating at a lower altitude. The use of fuel pumps provides an additional method of ensuring adequate fuel delivery, which is particularly important during climb and high-power situations where the engine may require a greater fuel flow than gravity alone can supply.

This design helps to mitigate issues that might arise if one method fails, thus improving the overall safety and operational capabilities of the aircraft. By incorporating both systems, a combination fuel system can effectively manage fuel delivery under various flight conditions, ensuring the engine receives the necessary fuel for optimal performance.