1. a main structural beam or girder that runs lengthwise in an aircraft fuselage or wing
Usage: aviation

Examples

• The aircraft’s longeron was damaged during the hard landing.
• Engineers reinforced the wing longerons to handle increased stress.
• The fuselage longeron provides structural support for the entire frame.
• Mechanics inspected each longeron for signs of metal fatigue.
• The longeron connects the nose to the tail of the aircraft.
• Carbon fiber longerons are lighter than traditional aluminum ones.