Plain English Meaning
A panel filling shaped like a bee's honeycomb, with lots of small open cells that make the part very stiff but very light. Two thin outer sheets are bonded to the top and bottom of this filling to form the finished part.
Full Definition
A lightweight structural material made of thin walls arranged in a pattern of six-sided cells, sandwiched between two outer skins to form a stiff, low-weight composite panel. It is widely used in aircraft control surfaces, floor panels, and fairings to provide strength with minimal weight.
Context Anchor
Seen when studying composite aircraft structures, especially inspections and repairs after impact, crushing, or moisture damage.