What type of tank is primarily responsible for supplying fuel to its related engine?

The main tanks are specifically designed to hold and supply fuel to the aircraft's engines. They play a crucial role in the overall fuel system, ensuring that the engines receive the necessary amount of fuel for optimal performance. Main tanks are typically integrated into the aircraft's structure and are filled first during refueling. Their primary function is to provide the engine with a steady and reliable flow of fuel, which is essential for maintaining thrust and supporting flight operations.

Auxiliary tanks, while they can increase the overall fuel capacity, are not primarily responsible for direct engine supply as they often serve to extend the aircraft's range. A sump box is primarily used as part of the drainage system to collect fuel and debris, and bladder tanks are flexible tanks that can be used in various locations but do not specifically relate to main engine operation. Understanding the specific roles of these different types of tanks helps clarify why the main tanks are critical for engine fuel supply.