Definition
A propeller whose blades are manufactured from layered composite materials such as carbon fiber or fiberglass bonded with resin, often around a structural core, instead of being machined from solid aluminum or wood.
Plain English
A propeller made from layers of strong, lightweight man-made materials bonded together, rather than carved from wood or shaped from metal.
Context Anchor
You may see this term during preflight inspections and in discussions of parts outside the airplane, especially when checking the propeller’s condition.
Derivation
Composite comes from the Latin componere, meaning 'to put together.' A composite material is literally several materials put together to get properties none of them have alone — here, the lightness of plastic with the strength of fibers.
Why Pilots Care
Composite propellers reduce aircraft weight, improve fuel efficiency, resist corrosion, and allow more complex blade shapes than metal propellers.
Intuition Check
Composite does not mean a propeller casually made from random parts. Here it means a propeller built from strong engineered layers that are bonded together.
Example Sentence 1
The new trainer came with a composite propeller, so the instructor briefed the student on the manufacturer's specific inspection requirements.
Example Sentence 2
After a bird strike the mechanic inspected the composite propeller blades for any delamination or cracks.