What is the primary function of differential spoilers during a roll command?

The primary function of differential spoilers during a roll command is to enhance the aircraft's maneuverability and control during turns. When the pilot initiates a roll to the left or right, differential spoilers come into play by extending further on one side while retracting on the other. This creates a difference in drag and lift between the two wings, which facilitates a more effective and responsive roll in the desired direction.

This design helps to minimize adverse yaw, a phenomenon where the aircraft tends to yaw in the opposite direction of the turn due to the differing aerodynamic forces on the wings. By adjusting the position of the spoilers in this way, the aircraft's response is more controlled and synchronized with the pilot's inputs, allowing for smoother and safer turns during flight.

The other options do not accurately describe the function of differential spoilers during a roll command. For example, if both spoilers were to extend equally or if they did not change position at all, the aircraft would experience less maneuverability and control, making it difficult to manage turns effectively.