Glide-slope controller for an elastic aircraft

Dong Chan Lee, Ramesh K. Agarwal

Research output: Contribution to conferencePaperpeer-review


A glide-slope controller for an elastic aircraft is studied in this paper. The glide-slope controller is a part of an automatic landing system to guide an aircraft down to a predetermined flight path to the end of a runway. Currently in most control problems associated with the glide-slope capture, rigid body equations of motion are employed to design the control law. This approach is suitable when the airplane has enough stiffness. However, when structural flexibility is dominant, the controller designed for rigid body dynamics is not suitable. In this paper the elastic behavior of the structure is coupled with rigid body equations of motion in the design of the control law to guide the airplane along a predetermined glide path. The full state feedback gain is determined employing conventional Linear Quadratic Regulator (LQR) technique. Simulated time histories of control show the validity of the proposed approach for the design of control law.

Original languageEnglish
StatePublished - 2001
Event39th Aerospace Sciences Meeting and Exhibit 2001 - Reno, NV, United States
Duration: Jan 8 2001Jan 11 2001


Conference39th Aerospace Sciences Meeting and Exhibit 2001
Country/TerritoryUnited States
CityReno, NV


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