To minimize its radar cross-section (RCS), the X-2's body is designed to have even surfaces and eliminate seam joints. The radiation-absorbent material (RAM) used on the body is reportedly a composite material consisting of ceramic and silicon carbide and is developed by Ube Industries, while the cockpit windshield is coated with a special tin alloy. The aircraft incorporates a serpentine shaped air intake duct to further suppress radar reflection. According to Hideaki Miwa of the Defense Ministry's procurement agency, the X-2's RCS is "no bigger than a giant beetle viewed from tens of kilometers away".