What is the role of the pitot tube in an aircraft?

The role of the pitot tube in an aircraft is to capture dynamic pressure and calculate airspeed. The pitot tube is a crucial component of the airspeed measurement system, as it works by measuring the pressure of the air that is being forced into the tube by the aircraft's forward motion. This pressure, known as pitot pressure, is combined with static pressure from a static port to determine the difference between the two, allowing the aircraft's airspeed to be calculated using the Bernoulli principle.

This function is vital for pilots, as knowing the airspeed is essential for safe flight operations, including takeoffs, landings, and during maneuvering. Accurate airspeed data helps in maintaining control and stability of the aircraft.

Other options do not pertain to the primary function of a pitot tube; a pitot tube does not measure fuel efficiency, assess engine temperature, or monitor cabin pressure. Those functions are handled by different instruments in the aircraft's systems.