A common misconception is that the speed of aircraft is primarily limited by engine performance capabilities. In reality, the key limiting factor is the lack of materials capable of withstanding the extreme temperatures generated by air friction at high speeds. For instance, temperatures on the nose cone, ailerons, and control surfaces can soar to approximately 700 degrees Celsius when flying at speeds exceeding Mach 5. At such elevated temperatures, traditional materials like aluminum tend to melt, CFRP (Carbon Fiber Reinforced Polymer) disintegrates, and even titanium starts to lose its mechanical properties. This is where Carbon/Carbon (C/C) composites come into play. 

As the name implies, Carbon/Carbon (C/C) composites consist of both the matrix and reinforcement made entirely of carbon, endowing the composite with the ability to withstand temperatures exceeding 2000 degrees Celsius. The conventional manufacturing method for C/C composites is not only time-consuming but also entails high production costs and high man hours requirements. Through our innovative approach, we anticipate producing a similar composite with comparable mechanical properties at a 60% faster rate while reducing the required manpower and overall costs. Furthermore, we've explored the use of coal as a reinforcement material, which is significantly more cost-effective, slashing the manufacturing expenses associated with C/C composites by 90%.