Radome
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A radome is a structural, weatherproof enclosure that protects a radar antenna. The radome is constructed of material transparent to radio waves. Radomes protect the antenna from weather and conceal antenna electronic equipment from view. They also protect nearby personnel from being accidentally struck by quickly rotating antennas.
Geodesic radomes at the Misawa Security Operations Center, Misawa, Japan
Spherical radome mounted atop the mainmast of a Type 45 destroyer
A Boeing E-3 Sentry, showing its rotodome mounted above the fuselage
One of the first radomes. The radome (top) covers the H2S radar system rotating antenna (bottom) on a Halifax bomber
Fiberglass
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Fiberglass or fibreglass is a common type of fiber-reinforced plastic using glass fiber. The fibers may be randomly arranged, flattened into a sheet called a chopped strand mat, or woven into glass cloth. The plastic matrix may be a thermoset polymer matrix—most often based on thermosetting polymers such as epoxy, polyester resin, or vinyl ester resin—or a thermoplastic.
Glass reinforcements used for fiberglass are supplied in different physical forms: microspheres, chopped or woven glass cloth.
A cryostat made of fiberglass
Several large fiberglass tanks at an airport
A fiberglass dome house in Davis, California