Two environments, one discipline. Aerospace engineering covers anything that flies, from a light aircraft to a deep-space probe. The work splits into aeronautics, which stays within the atmosphere, and astronautics, which operates beyond it.

Practitioners rarely work alone. A single aircraft programme pulls together structures specialists, propulsion engineers, avionics teams, materials scientists, and human factors experts. The integration problems are often harder than the individual components.

Main subdisciplines

• Aerodynamics and fluid dynamics
• Propulsion and thermodynamics
• Structures and materials
• Guidance, navigation, and control

Weight drives everything. Every kilogram added to an aircraft costs fuel for its entire service life. Every kilogram added to a rocket costs payload capacity directly. That pressure shapes how aerospace engineers think about design.