Abstract: There is disclosed in one example an inner loop controller for an aircraft flight computer, including: a stall protection circuit to compute, for an attitude angle ?, an attitude limit ?max as a function of a flight path angle (?) and an angle of attack limit (?max); a transfer function circuit to convert ? to an attitude rate {dot over (?)}, wherein {dot over (?)} is a time derivative of ?; and a load protector circuit to compute a limit on {dot over (?)} ({dot over (?)}max) as a function of a load factor limit (Nz,max) and a true airspeed (v).

Abstract: Embodiments are directed to systems and methods for utilizing a two-degree-of-freedom model-following control law within an architecture of nested loop functions. This allows for the separation of command and feedback path requirements and enables the restrictions of the inner loops to be applied to the outer loop feedbacks. This method of restriction allows a better allocation of coordinated authority between the loops.

Abstract: There is disclosed in one example an inner loop controller for an aircraft flight computer, including: a stall protection circuit to compute, for an attitude angle ?, an attitude limit ?max as a function of a flight path angle (?) and an angle of attack limit (?max); a transfer function circuit to convert ? to an attitude rate {dot over (?)}, wherein {dot over (?)} is a time derivative of ?; and a load protector circuit to compute a limit on {dot over (?)} ({dot over (?)}max) as a function of a load factor limit (Nz,max) and a true airspeed (v).