Patent ID: 9304516
Filing Date: 2016-04-05
CPC Classification: G05D

Claim Text:
1. A flight control system for vertical flight path control of an aircraft having a sensor, the system comprising: a flight control computer having an algorithm, the algorithm having a stable decoupled model having a decoupled lateral equation of aircraft motion and a decoupled longitudinal equation of aircraft motion; and a feedback command loop operably associated with the stable decoupled model, the feedback command loop having: a switch in communication with both the vertical flight path angle control law and the altitude control law, the switch being configured to send data to the vertical speed control law; wherein the vertical flight path angle control law, the altitude control law, and the vertical speed control law utilize the lateral equation of aircraft motion and the longitudinal equation of aircraft motion; and wherein the vertical speed control law is operably associated with the altitude control law when an aircraft altitude hold device is activated.