A stator vane for a gas turbine engine section comprising: a stator vane having an airfoil (122, 140) extending between a leading edge (124, 146) and a trailing edge (138, 152), said airfoil (122, 140) having a suction side (126, 144) and a pressure side (128, 142), and there being at least one piezoelectric actuator (130, 134, 148, 150) for changing a shape of at least one of said leading edge (124, 146) and said trailing edge (138, 152); characterised in that: at least one piezoelectric actuator (130, 134, 148, 150) is mounted on each of said suction and pressure sides (126, 144, 128, 142), with one of said piezoelectric actuators (130, 134, 148, 150) on one said side (126, 144, 128, 142) being controlled to contract and one of said piezoelectric actuators (130, 134, 148, 150) on another of said sides (126, 144, 128, 142) being controlled to expand to change the position of said leading edge (124, 146) relative to said trailing edge (138, 152); and one or both of said piezoelectric actuators (130, 134) are operable to change a position of said leading edge about a virtual hinge axis while changing the position of the trailing edge to a lesser extent; and said piezoelectric actuators (148, 150) are operable to change a position of said trailing edge about a virtual hinge axis while changing the position of the leading edge to a lesser extent. a stator vane having an airfoil (122, 140) extending between a leading edge (124, 146) and a trailing edge (138, 152), said airfoil (122, 140) having a suction side (126, 144) and a pressure side (128, 142), and there being at least one piezoelectric actuator (130, 134, 148, 150) for changing a shape of at least one of said leading edge (124, 146) and said trailing edge (138, 152); characterised in that: at least one piezoelectric actuator (130, 134, 148, 150) is mounted on each of said suction and pressure sides (126, 144, 128, 142), with one of said piezoelectric actuators (130, 134, 148, 150) on one said side (126, 144, 128, 142) being controlled to contract and one of said piezoelectric actuators (130, 134, 148, 150) on another of said sides (126, 144, 128, 142) being controlled to expand to change the position of said leading edge (124, 146) relative to said trailing edge (138, 152); and one or both of said piezoelectric actuators (130, 134) are operable to change a position of said leading edge about a virtual hinge axis while changing the position of the trailing edge to a lesser extent; and said piezoelectric actuators (148, 150) are operable to change a position of said trailing edge about a virtual hinge axis while changing the position of the leading edge to a lesser extent. at least one piezoelectric actuator (130, 134, 148, 150) is mounted on each of said suction and pressure sides (126, 144, 128, 142), with one of said piezoelectric actuators (130, 134, 148, 150) on one said side (126, 144, 128, 142) being controlled to contract and one of said piezoelectric actuators (130, 134, 148, 150) on another of said sides (126, 144, 128, 142) being controlled to expand to change the position of said leading edge (124, 146) relative to said trailing edge (138, 152); and one or both of said piezoelectric actuators (130, 134) are operable to change a position of said leading edge about a virtual hinge axis while changing the position of the trailing edge to a lesser extent; and said piezoelectric actuators (148, 150) are operable to change a position of said trailing edge about a virtual hinge axis while changing the position of the leading edge to a lesser extent.