Analysis of OH-6A Helicopter Flight Test Data Using Lissajous Figures

Abstract

This paper demonstrates that a new application of Lissajous gures to ight test data gives different capabilities to identify both the commensurateness and the relative phase between measured quantities. These are not available from either conventional time or frequency domain ight test data analysis. Fig. 1 Lissajous gures. Frequency ratios of 1:1 and 4:1 with initial phase differences of 0, 45, 90, 135, and 180 deg.