Describe the function of the pitot-static system?

The pitot-static system is essential for providing key flight data to the pilot. Its primary function is to measure airspeed, altitude, and vertical speed through the use of a combination of sensors and tubes. The system includes the pitot tube, which measures dynamic pressure to evaluate airspeed, and static ports that measure ambient air pressure to determine altitude and vertical speed.

As the aircraft moves, the pitot tube captures the airflow, allowing the airspeed indicator to function accurately by comparing the dynamic pressure from the airspeed with static pressure. The altimeter uses static pressure readings from the static ports to inform the pilot of the aircraft's altitude relative to sea level. Additionally, the vertical speed indicator, which also relies on static pressure changes over time, allows the pilot to monitor how quickly the aircraft is climbing or descending. Together, these functions are crucial for safe and effective aircraft operation, making the pitot-static system a cornerstone of flight instrumentation.

The other choices do not accurately describe the role of the pitot-static system. It does not provide navigation data, control heading, or monitor environmental conditions, which shows the distinct responsibilities of different instruments in an aircraft's flight systems.