Development of equations for longitudinal static stability and control calculus adapted to all-flying tail

This paper presents the development of equations needed to longitudinal stability and control calculus for all-flying tail aircrafts. All-flying tails, although unusual, have been used in some aircrafts since the beginnings of aviation. Nevertheless, don’t have in the literature any specific text showing the equations for longitudinal stability and control calculus adapted to this kind of tail. The development in this paper follows a classic approach adapted to the present case furnishing the expressions needed to determinate the neutral points and maneuver points, as well the equilibrium tail-angle and force curves for longitudinal horizontal flight and maneuvers.