noun
aeronautical engineering
Technical field covering the design and development of aircraft and spacecraft.
彼は大学で航空工学を専攻している。
He is majoring in aeronautical engineering at university.
航空宇宙工学 explicitly includes astronautical (space) engineering, while 航空工学 traditionally focuses on atmospheric flight.
Compound of 航空 (aviation) and 工学 (engineering).