What device is used to measure angular acceleration around the pitch, roll, and yaw axes of an aircraft?

The device specifically designed to measure angular acceleration around the pitch, roll, and yaw axes of an aircraft is indeed a gyroscope. A gyroscope works by maintaining its orientation based on the principles of angular momentum, allowing it to detect changes in orientation. This capability is crucial for stabilizing aircraft and for navigation systems that require precise tracking of an aircraft's attitude.

In contrast, an accelerometer is primarily used to measure linear acceleration, not angular motion. While it can provide information about changes in speed or direction, it does not specifically measure the rotational aspects like pitch, roll, or yaw. A magnetometer is used to measure magnetic fields and can assist with navigation by determining the orientation related to the Earth's magnetic field, but it does not provide information about angular acceleration. Lastly, a barometer measures atmospheric pressure and is typically used for altitude determination, unrelated to measuring angular movements. Thus, the role of a gyroscope in measuring angular acceleration is well established and critical for the functioning of various aerospace applications.