What type of sensor is typically used for measuring airspeed in aircraft?

The correct answer is a pitot tube, which is specifically designed to measure the dynamic pressure of the air as the aircraft moves through it. This dynamic pressure is a critical component in determining airspeed. By converting the pressure difference between the stagnation pressure (measured by the pitot tube opening) and the static pressure (from a separate static port), the pitot tube provides an accurate and real-time measurement of the aircraft's airspeed.

In contrast, gyroscopes are used to measure orientation and angular velocity, magnetometers are used to determine magnetic heading or orientation with respect to the Earth's magnetic field, and accelerometers are used to measure acceleration forces. While these devices are essential in various contexts for flight instruments and navigation, they do not serve the purpose of measuring airspeed directly like the pitot tube does.