The invention relates to an actuator system for a projectile having a
first and second pair of opposing steering fins disposed in a transverse
plane of the projectile. The first pair of opposing steering fins
includes a first fin and second fin. The second pair of opposing steering
fins includes a third fin and a fourth fin. The actuator system comprises
a first motor assembly configured to control the position of the first
pair of opposing steering fins, and a second motor assembly configured to
control the position of the second pair of opposing steering fins. The
first motor assembly and second motor assembly are mounted axially along
an axis of the projectile such that a first portion of the first motor
assembly is telescopically received within a second portion of the second
motor assembly.