Overview of unmanned aircraft systems -- Unmanned aircraft categories -- Initial unmanned-aircraft sizing -- Unmanned-aircraft geometry and configurations -- Aerodynamics -- Mass properties -- Structures -- Propulsion systems -- Flight performance -- Avionics, flight software, and subsystems -- Launch and recovery -- Communication systems -- Physics of remote sensing and in situ measurement -- Missions and payloads -- Mission systems integration -- Command, control, tasking, processing, exploitation, and dissemination -- Reliability, maintainability, supportability, and transportability -- System synthesis and mission effectiveness -- Cost analysis -- Product definition and requirements development.