https://missilethreat.csis.org/missile/brimstone/
Brimstone
The legacy Brimstone entered service in 2005, and has since been used by the RAF in Afghanistan, Iraq, and Libya. The missile measures 1.8 m in length and 0.18 m in diameter. Typically loaded on a triple-launching pylon, the missile weighs approximately 50 kg, including its 6.3 kg armor penetrating warhead.8 Because of the missile’s relatively light weight, 12 or more may be carried by a single aircraft.9
The baseline Brimstone can be launched in two distinct targeting modes: indirect and direct. An indirect targeting fire-and-forget mode is used when targets are beyond the aircraft’s line of sight. The missile is pre-programmed to search a specific area to identify, track, and strike vehicles within a designated “kill box.”10 These autonomous capabilities are made possible by the missile’s millimetric Wave (mmW) terminal seeker. The seeker captures images at 94 Ghz (near optical wavelengths), producing high resolution images for the system’s target recognition algorithms to evaluate