I was studying Principles of Flight, I came across a sentence which is my question.
_ the aileron is known as a rate control since a given aileron angle of deflection determines a rate of roll, not a roll displacement.
My 1st question is what is the difference between rate of roll and roll displacement? What is roll displacement?
My 2nd question is, I know rate of roll is the rate at which an aircraft executes a turn expressed in degrees per second, can we say that rate of roll is the rate of change of heading as the aircraft rolls about its longitudinal axis?