Title :
An approach of flight trim for wing-damaged asymmetric aircraft
Author :
Pengfei Cheng ; Chengfu Wu ; Xiaojun Duan ; Yue Guo
Author_Institution :
Sci. & Technol. on UAV Lab., Northwestern Polytech. Univ., Xi´an, China
Abstract :
Fault tolerant flight control (FTFC) technology has been researched for several decades. The purpose on developing and applying the technology in aviation is to improve the security and viability of aircraft. This paper mainly presents the flight trim analysis of wing-damaged asymmetric aircraft. In order to analyze the speciality of flight trim, the properties of aerodynamics and mass of damaged aircraft are introduced firstly. Then the establishment and simplification for equations of motion and flight trim are analyzed. Next the special numerical method of multidimensional Newton iteration for flight trim and its global convergences are analyzed. The end of this paper gives the simulation results of one small electric-powered UAV (SEPUAV) with 40% area moment of its left wing loss, and the ideal center region of trim points is obtained. This general trim method has been programmed and verified in the simulation environment preliminarily where the damage tolerant flight control (DTFC) technology will be validated ultimately.
Keywords :
Newton method; aerodynamics; aircraft control; autonomous aerial vehicles; convergence of numerical methods; fault tolerance; mobile robots; robot dynamics; telerobotics; vehicle dynamics; DTFC technology; FTFC technology; SEPUAV; aerodynamics; autonomous aerial vehicles; damage tolerant flight control; damaged aircraft mass; fault tolerant flight control; flight trim analysis; flight trim equations; global convergences; left wing loss; motion equations; multidimensional Newton iteration; numerical method; small electric-powered UAV; trim points ideal center region; wing-damaged asymmetric aircraft; Aircraft; Convergence; Force; Mathematical model; Nonlinear equations; Vectors; equations for trim; equations of motion; flight trim; multidimensional Newton iteration; wing-damaged asymmetric aircraft;
Conference_Titel :
Control Conference (CCC), 2013 32nd Chinese
Conference_Location :
Xi´an
