Influência da posição do cg na estabilidade e desempenho de uma aeronave

Abstract

This work purposes a study about how changes in longitudinal position of aircraft’s center of gravity affect characteristics of static longitudinal stability and performance. Along with changes in velocity and flight altitude, it has been verified its influence on the aforementioned characteristics. Moreover, it was also performed an analysis during a Pull up maneuver with the objective to understand the impact of these variations. After evaluating the analyses, the system has presented a chain reaction, i.e., the C.G. translation affected the stability coefficients, which implies in different trimming conditions for the aircraft and, consequently, an adjustment on the drag polar curve, which the performance indicators come from. Furthermore, the comparison of the analyses showed that the C.G. longitudinal translation affected as much stability as performance of the aircraft; however, with different intensities on each parameter evaluated.