Consider the aerofoil shown in Figure Q.5, with a mass m=4 kg, moment of inertia about the elastic axis lo=0.8 kg m. The aerofoil is supported by a linear spring of stiffness kh= 15 N/m and a rotational spring of stiffness ka = 6 N.m/rad. The location of the centre-of-mass is c.m.=0.3c from the leading edge and the lift slope is 5. h 444 Kn e Figure Q.5 b) Describe the mode shapes of the system 0.3c. c.m. a) What are the likely implications for the flutter and divergence speeds if: i. the shear centre is located at 0.3c from the leading edge, ii. the shear centre is located at 0.65c from the leading edge. Show all supporting calculations. [15 marks] the ear centre is located at