1. The world`s most powerful integral solid rocket engine was successfully tested in Xi`an
On the morning of October 19, the ground thermal test run of the integral solid rocket motor with the largest thrust in the world, independently developed by the Fourth Academy of China Aerospace Science and Technology Corporation, achieved a complete success in Xi'an.
The engine has a diameter of 3.5 meters and a thrust of 500 tons. It adopts a high-performance fiber composite material shell, a high-loading integrally cast-formed combustion chamber, and a large-size nozzle. The comprehensive performance of the engine has reached the world's leading level. The success of the test marks a substantial increase in my country's solid carrying capacity, provides more power options for the development of my country's launch vehicle type spectrum, and is of great significance to the promotion of the development of large and heavy launch vehicle technology in the future.
2. The world's first grade 19.8 ultra-high-strength fastener was successfully developed
On November 28, the high-performance steel materials team led by Professor Dong Han from the School of Materials Science and Engineering of Shanghai University, Hebei Longfengshan Casting Co., Ltd., Qifeng Precision Technology Co., Ltd., Zhoushan 7412 Factory, Jiangsu Institute of Metallurgical Technology, Shanghai University (Zhejiang) High-end Equipment Basic Parts and Materials Research Institute, Shangda New Materials (Taizhou) Research Institute and other seven units after more than a year of joint research, developed the world's first 19.8-level ultra-high-strength fasteners, becoming the world's highest strength Grade fasteners. Public information shows that the highest strength level of fasteners of current superior companies in foreign countries has reached 17.8. According to the international development status of my coun