A 5-kip satellite is 7.2 ft high and has octagonal bases of sides 3.6 ft. The coordinate

Question:

A 5-kip satellite is 7.2 ft high and has octagonal bases of sides 3.6 ft. The coordinate axes shown are the principal centroidal axes of inertia of the satellite, and its radii of gyration are kx = kz = 2.7 ft and ky = 2.94 ft. The satellite is equipped with a main 125-lb thruster E and four 5-lb thrusters A, B, C, and D, which can expel fuel in the positive y direction. The satellite is spinning at the rate of 36rev/h about its axis of symmetry Gy, which maintains a fixed direction in space, when thrusters A and B are activated for 2s. Determines

(a) The precession axis of the satellite,

(b) Its rate of precession,