Abstract: According to various embodiments, there is provided a grinding module including a base; a cylinder mounted to the base with a longitudinal axis of the cylinder arranged at least substantially perpendicular to a surface of the base, wherein the cylinder is rotatable about the longitudinal axis of the cylinder, and wherein a cylindrical surface of the cylinder is adapted to receive a grinding belt; a linear actuator mounted to the base with a centreline of linear motion of the linear actuator arranged to intersect the longitudinal axis of the cylinder; and a holder connected to the linear actuator, the holder adapted to hold a workpiece with a surface of the workpiece facing the cylindrical surface of the cylinder, wherein the linear actuator is adapted to move the holder relative to the cylinder along the centreline of linear motion of the linear actuator, and wherein the cylindrical surface of the cylinder is adapted to define a curved profile so that the grinding belt is adapted to grind and shape the surfac

Abstract: According to various embodiments, there is provided a grinding module including a base; a cylinder mounted to the base with a longitudinal axis of the cylinder arranged at least substantially perpendicular to a surface of the base, wherein the cylinder is rotatable about the longitudinal axis of the cylinder, and wherein a cylindrical surface of the cylinder is adapted to receive a grinding belt; a linear actuator mounted to the base with a centreline of linear motion of the linear actuator arranged to intersect the longitudinal axis of the cylinder; and a holder connected to the linear actuator, the holder adapted to hold a workpiece with a surface of the workpiece facing the cylindrical surface of the cylinder, wherein the linear actuator is adapted to move the holder relative to the cylinder along the centreline of linear motion of the linear actuator, and wherein the cylindrical surface of the cylinder is adapted to define a curved profile so that the grinding belt is adapted to grind and shape the surfac

Abstract: Disclosed herein is a collapsible wing assembly of an unmanned aerial vehicle (UAV) and a method of locking and unlocking the collapsible wing assembly of an unmanned aerial vehicle (UAV). The collapsible wing assembly comprising a center wing adapted to be attached to the fuselage; and a pair of outboard wings, wherein each of the outboard edges of the center wing comprises a first attachment structure, and each of the inboard edges of the outboard wings comprises a second attachment structure, wherein the first attachment structure is operable to engage with the second attachment structure and displace the second attachment structure to a captive position towards the trailing edge of the center wing.