Sure, the air hitting the sail would impart a force on the craft, but there is also a force from the fan? I guess I think of reversers as redirecting the jet b

Sure, the air hitting the sail would impart a force on the craft, but there is also a force from the fan? I guess I think of reversers as redirecting the jet blast in a controlled manner, I guess I don't think of the sail as redirecting the wind in a controlled manner.