INFLUENCE OF AERODYNAMIC FORCES IN ICE SHEDDING

Stresses in accreted ice on a typical airfoil impact ice caused by aer odynamic forces have been studied using finite element analyses. The o bjective of this study is to determine the significance of these stres ses relative to values needed to cause ice shedding. In the case studi ed, stresses are not significant (<10%) when compared to the fracture value for airspeeds below a Mach number of 0.45. Above this velocity, the influence of aerodynamic forces on impact ice stresses should be c onsidered in the analyses of ice shedding.