Introduction
The document discusses the Boeing 707-E3 AWACS, which utilizes a composite radome reinforced with S-2 Glass yarns. This radome is crucial for the radar systems on the aircraft, providing essential features such as low dielectric constant and high strength.

Specifications
The AWACS radome is constructed using a lightweight fabric in epoxy prepreg, provided by BGF Industries, Hexcel Composites, and The Boeing Company. The radome is a 30 ft. diameter structure supported by two 12 ft. high pegs and joined by a metal spine.

Material Benefits

• Radar Transparency: The low dielectric constant and loss tangent ensure excellent radar transparency from 1 MHz to over 10 GHz.
• Moisture Resistance: The material does not absorb moisture, maintaining transparency and mechanical performance even when saturated.
• Fire Resistance: The inorganic fiber provides excellent fire resistance, enhancing safety.
• Thermal Stability: S-2 Glass offers high-temperature performance, being more thermally stable than E-glass.
• Strength and Toughness: The material saves weight compared to quartz or D-glass while providing high strength and impact toughness.
• Cost Efficiency: The use of regular E-glass GRP composite processing technology reduces costs.
• Ease of Machining: No special cutting tools are needed, making the material easy to repair.

Disclaimer
The document includes a disclaimer stating that the data provided is for guidance only and does not guarantee applicability or assume liability. Users are responsible for testing the material's suitability for their applications.

Contact Information
For further information, contact details for AGY's world headquarters in the USA and their European office in France are provided.