What is most effective in countering induced roll when wingspan and ailerons extend beyond the vortex?

Induced roll occurs when an aircraft experiences a rolling motion due to the effects of wingtip vortices, which can be exacerbated by its wingspan and control surfaces. The most effective method to counter induced roll when the wingspan and ailerons extend beyond the vortex involves using counter roll control.

Counter roll control specifically refers to the use of control surfaces to counteract the rolling moment induced by lateral asymmetries in lift caused by the vortex. This can be achieved through appropriate inputs to the ailerons or other lateral control surfaces. By applying control inputs in the opposite direction of the induced roll, the pilot can effectively stabilize the aircraft and maintain level flight.

Other options may address flight dynamics but are not as effective specifically for countering induced roll. Speed adjustments could influence lift and drag, stabilizer control relates to pitch stability, and elevator adjustments are primarily used for controlling pitch rather than lateral stability. Therefore, counter roll control is the most direct and effective response to combat the effects of induced roll in this scenario.