Which acceleration occurs during aerobatic maneuvers when speed and direction change?

Which acceleration occurs during aerobatic maneuvers when speed and direction change?

• A. Radial Acceleration
• B. Linear Acceleration
• C. Positive G Force
• D. Angular Acceleration

Answer: (D)

When an airplane performs aerobatics, its orientation and rotation about its axes change rapidly. Angular acceleration is the rate at which that rotation rate itself changes over time. So, if the roll, pitch, or yaw rate is increasing or decreasing during the maneuver, the aircraft is experiencing angular acceleration. Radial (centripetal) acceleration describes the inward pull needed to keep the aircraft moving along a curved path, which is about changing the direction of travel, not the rate of rotation itself. Linear acceleration covers changes in speed along the path, but the question is focused on how quickly the aircraft’s rotation rate is changing, which is angular acceleration. Positive G force is a measure of the resultant force on the pilot, not a type of acceleration.

When an airplane performs aerobatics, its orientation and rotation about its axes change rapidly. Angular acceleration is the rate at which that rotation rate itself changes over time. So, if the roll, pitch, or yaw rate is increasing or decreasing during the maneuver, the aircraft is experiencing angular acceleration.

Radial (centripetal) acceleration describes the inward pull needed to keep the aircraft moving along a curved path, which is about changing the direction of travel, not the rate of rotation itself. Linear acceleration covers changes in speed along the path, but the question is focused on how quickly the aircraft’s rotation rate is changing, which is angular acceleration. Positive G force is a measure of the resultant force on the pilot, not a type of acceleration.