The first use for the material came in 1962 when Lockheed produced a 32-inch-diameter radome for that Apollo spacecraft; it was made from a filament-wound shell and a light-weight layer of inside insulation Forged from limited silica fibers. Even so the Apollo structure altered, along with the radome never flew.1 https://www.quora.com/profile/Trevor-Flatcher-2/Silicon-Carbide-in-wind-power-equipment-applications-Silicon-Carbide-in-Wind-Power-Equipment-Applications-Silicon-Carb