What is the purpose of the header tank in the MQ-9 fuel system?

The primary purpose of the header tank in the MQ-9 fuel system is to feed the engine. The header tank plays a crucial role in the aircraft's fuel management by ensuring a consistent and reliable supply of fuel to the engines. Its design allows for the collection and distribution of fuel, which is essential for maintaining optimal engine performance. By feeding the engine directly, the header tank helps prevent issues related to fuel starvation, particularly during maneuvers or changes in aircraft attitude where fuel flow dynamics can be affected. This function is vital for the safe and efficient operation of the MQ-9 during its various missions.

While other components of the fuel system may also play roles in storage, regulation, or monitoring, the header tank's specific function focuses on feeding fuel to the engine.