What is the primary function of the pitot-static system in an aircraft?

The primary function of the pitot-static system in an aircraft is to determine airspeed, altitude, and vertical speed. This system plays a crucial role in providing the pilot with essential information about the aircraft's performance and position during flight.

The pitot-static system consists of various components that measure different aspects of air pressure. The pitot tube measures dynamic pressure, which is the difference between static air pressure and total pressure, and it allows for the calculation of airspeed through the airspeed indicator. The static port measures static air pressure, which is used by both the altimeter and the vertical speed indicator to provide information on altitude and the rate of climb or descent, respectively.

This system is fundamental for maintaining adequate situational awareness during flight, especially in conditions where visual references may not be available. Understanding these measurements enables pilots to make informed decisions about aircraft performance and safety in various phases of flight.