Aerospace engineering is concerned with the design, manufacture and operation of aircraft, launch vehicles, satellites, spacecraft and ground support facilities. It is a particularly challenging discipline because of the need for light-weight but highly reliable aircraft and spacecraft. Cutting-edge technology and design are key in this field. Aerospace engineering projects tend to be multidisciplinary in nature because of the scientific content of many of the payloads and the complex thermo-physical aspects of hypervelocity atmospheric flight. All workers in this field must be adept at incorporating technology from outside their immediate specialty.