CCarbon fiber reinforced composites are not only lightweight and high-strength structural materials, but also have important stealth functions, such as CF/PEEK or CF/PPS have excellent broad-peak absorption properties and can effectively absorb radar waves. The United States has been used to build the latest stealth bomber.
The main structure of the American Pmur22 supersonic aircraft is the use of medium modulus carbon fiber reinforced special engineering plastics. Mirage III's decelerated parachute cover and ejection device are also made of this material. It has been successfully used to absorb radar waves such as ribs, skins and some connectors and fasteners of aircraft. The shell of Tomahawk cruise missile, the fuselage base material of BMI-2 stealth bomber and the local part of F117A stealth aircraft also use carbon fiber modified polymer wave-absorbing material.
In the use of fuselage materials, traditional aluminum alloy is only 10%, composite materials and titanium alloy materials each account for 45%. The light weight of the new composite materials greatly reduces the overall weight of the fighter, the latest Chinese "crane" type air fighter FF-2A uses only 10% of the fuselage materials, while composite materials and titanium alloy materials each account for 45%.
Carbon fiber composites are widely used in the manufacture of new fighter planes because of their light weight and high strength. Chinese LMY 15 "Falcon" trainers have adopted a large number of carbon fiber composite materials to make parts of the fuselage of the Chinese J-10 fighter plane to reduce the weight.
Carbon fiber composites are mainly used in the structural components of missile warheads, projectile bodies and engine shells. Carbon / carbon and carbon / phenolic are important heat-resistant materials such as warhead end, engine nozzle throat lining and ablation-resistant parts. it has been widely used in American dwarf, militia, Trident and other strategic missiles.