Do you know what progress has been made through computer programs?

After extensive investigation and comparative analysis of the system performance, accuracy, volume and weight, and considering the special needs and future development of submarine-to-surface missiles, it is decided to adopt a computer scheme, that is, a research platform hosted by Chen Deren. The missile aiming system should not only adapt to the constant change of submarine orientation, but also meet the operational needs of launching multiple missiles. After demonstration, an all-optical collimator scheme proposed by Tang Jiuhua of Changchun Institute of Optics and Mechanics and developed by Wang Jiali was adopted to compensate the hull deformation. In addition, a lot of demonstration work has been done on the control, telemetry, safety, missile structure, ground equipment and other subsystem schemes. 1968 determined the backup system scheme, and carried out the corresponding design and test.

1in March, 1967, the National Defense Science and Technology Commission clarified the division of tasks for the development of missile and nuclear submarine weapon systems, and required the development units to complete the overall and sub-system design work on schedule.

In the same year 10, the navy approved the overall plan of submarines and missiles, and determined the main tactical and technical indicators. 1968, the overall unit put forward technical design requirements for each subsystem, and missile development entered the stage of technical research and subsystem development and test.

1970 1 month 1 day, Zhou Enlai approved the Fourth Hospital and the Fourth Hospital to move back to Beijing and be placed under the organizational system of the First Hospital of the Seventh Machinery Department. The First Hospital transferred dozens of technical cadres to four departments, and appointed Huang Weilu, a control system expert, as the chief designer of the submarine missile, which strengthened the research and development of the submarine missile. The scientific and technical personnel responsible for the development of submarine-to-surface missiles have done a lot of theoretical analysis, calculation and test work by analyzing the underwater motion characteristics of missiles. Starting from different test purposes such as underwater fluid dynamics, underwater trajectory and underwater load, they make full use of existing test facilities such as flume and wind tunnel to determine the scale model test scheme; The scale model ejection test was carried out by using the test tanks of the Sixth Machinery Department, the Seventh Academy and the Second Academy, which provided the design basis for the development of Roddy missile and accumulated valuable data for the analysis of underwater launch technology. Hundreds of research tests and launch tests have been carried out on the first batch of missile scale models, and some interference factors such as water depth, velocity and exit velocity have been simulated, and a large number of data have been measured, forming a relatively complete set of underwater trajectory research methods. In order to study the motion state of submarine-to-surface missiles under water, it is necessary to measure the underwater trajectory. However, it is very difficult to photograph and measure missiles launched from mobile submarines and moving at high speed in seawater.

1984, Zhai, a submarine-launched missile test site in southern Liaoning, proposed a scheme of underwater trajectory measurement using low-light-level television technology. With the support of the Ministry of Public Security and the efforts of the research group, an experimental underwater low-light-level television system was assembled in 1985, which solved the measurement problem of underwater launched missiles and laid the foundation for underwater trajectory measurement.

At the same time, the four departments carried out experimental research on underwater load environment. After three different scale model tests, all kinds of loads during the underwater launch test are measured, the maximum force of the missile is obtained, and the parameters of the load environment of the underwater launch missile are obtained, which provides the strength calculation basis for the structural design of the whole missile. In addition, Liu Huaizhong, the North China Missile Test Base, made many improvements to the speedometer, which increased the success rate of measuring parameters such as missile exit velocity from 10% to 100%, and ensured the measurement accuracy, which provided a basis for testing the correctness of the design scheme of launch power supply system. In order to study the underwater launching technology under real conditions, 508 research institutes of No.4 Department, No.5 Hospital, No.1 Hospital, No.210 Factory,10/Institute and Shanghai Boiler Factory cooperated to design and manufacture the recoverable full-scale model bombs.

In order to find out the structural strength of the model shell falling into the sea from a height of tens of meters, and whether it may affect the safety of the ship, Huang Weilu organized the testers of the No.7 Machinery Department to use the newly-built Nanjing Yangtze River Bridge to throw the model shell off the bridge deck and conduct a water impact test. Under the exposure of the sun, the temperature of the missile wall rose to about 60 degrees Celsius. Installing instruments, debugging equipment and cleaning dirt in the bomb bay will soon make you sweat all over. However, they are not afraid of hardship and fatigue. 1in August, 970, they successfully completed the missile impact test, measured the missile load, penetration depth and other parameters under different launch attitudes, and obtained valuable information.