What is a radome usually made of?

A radome is typically constructed from materials that provide durability while allowing electromagnetic signals to pass with minimal interference. Fiberglass is commonly used because it has excellent strength-to-weight properties, is weather-resistant, and can be molded into complex shapes that are essential for maintaining aerodynamic properties in various environments. This characteristic makes fiberglass particularly suitable for radomes, as it effectively protects the radar components housed inside while preserving signal clarity and integrity.

Other materials like aluminum, while durable, can interfere with radar signals due to their conductive properties. Plastic, depending on its type, may not offer the necessary durability and weather resistance that fiberglass provides. Wood, on the other hand, is generally too heavy and can swell or warp due to moisture exposure, which can affect performance negatively. Thus, fiberglass remains the preferred choice for constructing radomes in radar systems.