Recently, the T800H grade carbon fiber provided by WHGW Composites Technology Group and the 3.35-meter-diameter carbon fiber composite liquid oxygen storage tank designed and developed by China Aerospace Design Institute has successfully completed the low-temperature mechanical test. This is the first time that China’s large-scale carbon fiber composite liquid oxygen storage tank has used domestic carbon fiber and has passed the engineering application level test verification. It indicates that China's carbon fiber composite liquid oxygen storage tank has preliminary engineering application capabilities and is expected to be used in China's new generation of launch vehicles. To achieve engineering applications.
The storage tank, which accounts for more than 60% of the rocket's structural weight, can be called the "big" part of the rocket. The lighter the storage tank means the more payload the rocket can carry, and the greater the carrying capacity of the rocket. Therefore, the weight of the storage tank has always been "calculated" by structural designers. In recent years, from traditional aluminum-copper alloys to high-strength aluminum-lithium alloy materials, the iteration of storage tank structural materials has continuously helped the rocket achieve the "small goal" of weight reduction, but for structural designers, this is far from enough. Since 2016, the R&D team of the China Aerospace Design Institute has focused on carbon fiber reinforced composite materials with higher mechanical properties, and has carried out relevant program demonstration work.
WHGW broke through the core technology of domestic T800 carbon fiber in 2013, and realized engineering production in the following year. In 2018, the commercial production capacity of T1000 grade carbon fiber will be held.
China Aerospace Design Institute and WHGW jointly developed two one-stop projects of "domestic T800H carbon fiber" and "high-strength high-modulus carbon fiber" in the national appraisal, and both won the first good results in the country. At present, the company has formed a series of high-strength, high-strength medium-mode, high-strength and high-mode carbon fiber product systems, and has built an advanced composite material research and development center to provide high-quality products for the development of China’s aerospace, aviation, weapons industry, large aircraft and other national defense and military industries. Performance carbon fiber, composite parts and other products.