What is a key factor affecting wake turbulence strength?

• A. The aircraft's wingspan
• B. The aircraft's speed and configuration
• C. The aircraft's altitude
• D. The aircraft's flight path

Answer: (B)

A key factor affecting wake turbulence strength is the aircraft's speed and configuration. Wake turbulence is primarily generated by the lift produced by an aircraft's wings, which is influenced by various factors, including how fast the aircraft is moving (its speed) and its configuration at the time (such as flaps extended or retracted).

When an aircraft is flying at a higher speed, it creates a stronger lift, thereby generating more turbulent vortices. Additionally, the configuration of the aircraft—such as whether the flaps are deployed for takeoff or landing—can also affect the amount of lift produced. If the aircraft is in a configuration that enhances lift, it will consequently produce more significant wake turbulence.

The wingspan, altitude, and flight path certainly play roles in the overall dynamics of flight and turbulence, but it is the combination of speed and configuration that has the most direct and significant impact on the strength of the wake turbulence generated by an aircraft. Thus, understanding these factors is essential for air traffic controllers when managing spacing and separation between aircraft during takeoff and landing phases.