Definition
Lightweight, hexagonal-shaped structures used in sandwich panels.
Materials
Can be made from aluminum, Nomex, Kevlar, or thermoplastics.
Advantages
- High strength-to-weight ratio.
- Excellent energy absorption.
- Good thermal insulation.
Applications
Used in aircraft floors, doors, and control surfaces.
Types of Honeycombs for Aircraft
1. Aluminum Honeycomb
Characteristics
High strength, lightweight, good corrosion resistance.
Applications
Aircraft flooring, panels, and control surfaces.
2. Nomex Honeycomb
Characteristics
Lightweight, good thermal and fire resistance, made from aramid paper.
Applications
Interior panels, flooring, and secondary structures.
3. Kevlar Honeycomb
Characteristics
High strength, lightweight, excellent impact resistance.
Applications
Radomes, fairings, and other components requiring high impact resistance.
4. Thermoplastic Honeycom
Characteristics
Lightweight, good impact resistance, and moisture resistance.
Applications
Aircraft interiors and partitions.
5. Fiberglass Honeycomb
Characteristics
Good thermal and electrical insulation, lightweight.
Applications
Aircraft interiors, electrical enclosures.
Prepreg
Definition
Fibers pre-impregnated with resin, ready for use.
Components
- Fibers: Carbon, glass, aramid.
- Resin: Epoxy, phenolic.
Advantages
- Consistent resin distribution.
- Reduced voids.
- Improved properties.
Storage
Often refrigerated.
Usage
High-performance aircraft structures.
