Which part of the aircraft controls flap deployment speed during operation?

The flap control unit is responsible for managing the deployment of the flaps during flight operations. This component plays a critical role in ensuring that the flaps are deployed and retracted at the appropriate speeds. By monitoring various inputs such as airspeed and aircraft configuration, the flap control unit can determine when to initiate flap deployment. This functionality is vital for maintaining optimal aerodynamic performance and safety during different phases of flight, such as takeoff and landing.

While the other components like the flap motor and flight control computers contribute to the overall operation of the flap system, they do not specifically control the speed of flap deployment. The flap motor physically moves the flaps, but the speed at which they are deployed is governed by the commands and logic provided by the flap control unit. The dynamic flap controller may assist in certain situations but is not typically designated for controlling deployment speed in the same way.

Thus, the flap control unit is the primary component that directly oversees flap deployment speed, making it the correct choice for this question.