Imitate the wings of insects, making the rocket parts two times lighter

  Currently, the development of low-cost rockets has become a trend. The most effective way to reduce the cost of a rocket is to reduce the structural quality of the rocket and improve its effective carrying capacity. In order to achieve this goal, the designers have their own magical powers. No, some designers have turned their attention to animals.
  After hundreds of millions of years of evolution, animal bodies have many lightweight and stable structures, which have important reference significance for the design of launch vehicles and future new space vehicles. Since the concept of bionics was formally proposed in the middle of the 20th century, scholars from various countries have conducted extensive and in-depth research on bionic structural materials, and invested a lot of manpower and material resources in the development of bionic products.
  For example, in the 1930s abroad, aluminum foil was used to make hexagonal aluminum honeycomb cores. The method is to imitate the structure of the dragonfly’s rear wing. This kind of structural material is used in airplanes, which can effectively reduce the weight of airplanes.
  Later, some scholars designed a lightweight and high-strength shell structure by imitating the skull of a bird, which was used to reduce the weight of the new aircraft structure, and achieved good practical results.
  Others have discovered that although the toucans’ beaks are very light, they have high specific stiffness and specific strength. After observing its cross-sectional structure, it is found that it is a typical “sandwich structure”. The outside is composed of stratum corneum and a closed fiber network. The stratum corneum has high strength and elastic modulus. This is a pair of bionic lightweight structure design. Has important meaning.
  In recent years, domestic aerospace colleges and universities have also begun to make efforts in the research of bionic structures.
  Some universities have carried out research on the microstructure and topological distribution of beetle elytra biomaterials, and found that the beetle elytra is a kind of lightweight structure connected in a “pier” shape. The distribution has a topological distribution law, which has a strong reference significance for the design of new lightweight and high-strength structures.
  At present, the R&D Center of China Academy of Launch Vehicle Technology is also using 3D printing technology and bionic structure technology to develop prototypes of spacecraft structures. Through experiments, it is found that when the load tolerable is the same, the new part designed by imitating the beetle elytra has a structural quality that is more than 20% lighter than the traditional structure, and the manufacturing speed is far faster than the traditional technology, and the processing shape is also very free.
  It is believed that in the near future, the bionic structure technology will be formally applied to my country’s rockets, contributing to the development of low-cost commercial launches.