Dynamic Stability On Lateral Directional Of An Aircraft Using Aileron

Hew, Khai Sheng (2018) Dynamic Stability On Lateral Directional Of An Aircraft Using Aileron. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

The dynamic stability analysis of the aircraft can be evaluated in two dimensional modes:longitudinal stability analysis and lateral directional stability analysis.This present work focuses on the second mode which is lateral directional.The dynamic stability analysis is carried out by evaluating the behavior of three flight parameter due to aileron deflection.These three flight parameters are sideslip angle ß,roll angle Ø and yaw angle ψ.These three flight parameters describe the behavior of the aircraft in lateral directional and it can be obtained by solving the governing equation of lateral directional.In this present work,a computer code is developed in MATLAB software to solve the governing equation of flight motion using Laplace transformation.The validation was carried out by comparing the results for the lateral directional of aircraft model Learjet 24 with the results provided by Marcello R.Napolitano (2012).After that,the developed computer code in MATLAB is applied to all three types of aircraft models for flight dynamic analysis.These three types of aircraft models are Cessna 182,Cessna 310,and Cessna 620.The developed computer code in MATLAB provides four types of aileron deflection,namely single doublet impulse,multiple doublet impulse,single doublet and multiple doublet.The results show that each aircraft has different response due to the deflection of aileron and the developed computer code represents a useful tool for flight dynamic analysis.

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