What is the primary purpose of a fuel flow meter in an aircraft?

The primary purpose of a fuel flow meter in an aircraft is to measure the quantity of fuel being delivered to the engine. This measurement is crucial for several reasons. First, it allows pilots and flight engineers to monitor fuel consumption accurately, which is vital for flight planning and ensuring the aircraft has enough fuel for the duration of the flight. Monitoring fuel flow helps in maintaining optimal engine performance by ensuring the engine receives the appropriate amount of fuel for combustion.

By providing real-time data on the fuel delivery rate, the fuel flow meter aids in adjusting power output and managing fuel efficiency effectively without needing to directly control engine output. This continuous flow measurement also contributes to safety, as it allows for early detection of potential fuel system issues, such as leaks or blockages.

In essence, the ability to accurately measure fuel flow is fundamental to the safe and efficient operation of an aircraft, making this function of the fuel flow meter integral to aviation.