In recent years the U.S. military graphite parts processing in the world, what cruise graphite electrode missile, graphite smart bombs, especially stealth aircraft, is the eye-catching, first F117, and later is B-2, $literal, $literal and so on, it is said that $literal set a variety of sophisticated technology in one, because the stealth performance is more outstanding, experts are known as “military aircraft development in this century a milestone.”
So, graphite manufacturers weigh dozens of tons of aircraft in the air how stealth, that is, not by radar detection? The data said that the B-52 bomber’s radar reflection section of 100 square meters, MiG-29 for 25 square meters, b-lb for less than L square meters, and $literal only less than 0.1 square meters, just equivalent to a bird’s radar reflection section in the sky, which makes the general radar difficult to find it. B-2 ‘s stealth performance comes first from its shape. The overall shape of the $literal is smooth, with no “crease” and not easy to reflect the radar wave. The cockpit is arc-shaped, and the radar wave that shines here will “crawl” around the shape of the cabin and not be reflected back. The sealed glass cabin covers a slant, and all the glass is made with metal powder, which makes the radar wave unable to penetrate the cabin, causing diffuse reflection.
After the graphite wing is swept 33 degrees, the radar waves from the upper and lower directions can not be reflected or refracted back to the direction of the radar. At the rear of the wing front, there are irregular honeycomb cavities that can absorb radar waves. The rear half of the wing is two W, so that the radar wave from the rear of the aircraft cannot be reflected back. And the $literal has no vertical fin, which greatly reduces the overall radar reflection section of the aircraft. There is no weapon compartment or weapon hanger underneath the fuselage, even the engine compartment and landing gear compartment are all buried under the smooth wing, thus avoiding the radar wave reflection. This is from the fuselage structure, there is the body material, B-2 aircraft’s entire fuselage, in addition to the main beam and engine cabin is titanium composite materials, the other parts are composed of carbon fiber and graphite composite materials, not easy to reflect radar wave. Moreover, these different composite parts are not by rivets, but by high-pressure die-casting. In addition, the leading edge of the wing is covered with a special layer of absorbing material (RAM). A special absorbing material is also used in the two square protruding parts of the front part of the wing and the inner-mounted radar scan antenna array. In addition, $literal’s entire body was sprayed with a specially designed absorbing paint, which greatly reduced the echo of enemy detection radar.