Although no British designer would ever admit to it, the Spear class of Aerolyth platform is clearly influenced by the American AC-1 in both form and function. Like the AC-1, the Spear is based on two Aerolyth panels, with a large primary weapon. It was designed for low altitude operation, with its Aerolyth panels only capable of reaching 12,000 feet. The official tactical doctrine is for the Spear to operate at higher altitudes than the AC-1 (10s or 100s of feet from the ground, instead of only a few feet), so it has a heavier mass of armor facing down and only a light armor covering on top. To support its heavier overall armor structure, it uses non-standard Aerolyth panels. To reduce weight, the Spear does not carry a generator, instead using batteries to charge its Aerolyth panels.