Flight Testing refers to the process of evaluating the performance, safety, and reliability of aircraft and aerospace systems through controlled flight operations. This skill encompasses the planning, execution, and analysis of test flights to gather data on various parameters such as flight dynamics, system functionality, and compliance with design specifications. Knowledge of Flight Testing is used to identify potential issues, validate design changes, and ensure that aircraft meet regulatory standards before entering service.

Flying Qualities refer to the characteristics and performance attributes of an aircraft that influence its handling, stability, and overall flight behavior. This skill encompasses the understanding of aerodynamic principles, control surfaces, and flight dynamics that enable effective maneuvering and safe operation of aircraft. Knowledge of Flying Qualities is used to assess and enhance aircraft design, ensuring optimal performance in various flight conditions and improving pilot control and safety.

Inertial Navigation Systems (INS) are navigation systems that utilize inertial sensors to determine the position, orientation, and velocity of a moving object without the need for external references such as GPS. INS works by continuously measuring and integrating the accelerations and angular rates experienced by the object to calculate its trajectory. These systems are commonly used in aircraft, spacecraft, ships, submarines, and vehicles to provide autonomous navigation capabilities in environments where GPS signals may be unavailable or unreliable.

Radar is the use of electromagnetic waves to detect and locate objects, often used in navigation and military applications. It requires specialized knowledge in the use and interpretation of radar equipment, as well as an understanding of radio waves and their properties.

Unmanned Underwater Vehicles refer to robotic systems designed for underwater exploration and operations without a human operator on board. This skill involves the design, deployment, and control of these vehicles for various applications, including marine research, environmental monitoring, and underwater inspections. Knowledge of Unmanned Underwater Vehicles enables the user to gather data, conduct surveys, and perform tasks in challenging underwater environments, enhancing capabilities in oceanography and underwater engineering.