2results about How to "Solving Manufacturing Challenges" patented technology

This application relates to the field of solid rocket motor technology, and particularly to a method for integrated preparation and protection of solid rocket motor propellant grains based on a functional sacrificial core mold. The method includes: designing a high-burning-rate core mold assembly and an electrothermal heating assembly according to the propellant grain structural parameters; when the propellant grain length does not exceed a preset length threshold, the core mold is integrally formed using a mold method; otherwise, it is prepared in segments and connected via flanges; the electrothermal heating assembly is attached to the outer surface of the core mold using a high-temperature resistant adhesive, and a temperature sensor is fixed thereon, then the entire assembly is installed into the combustion chamber shell; an aluminum foil gasbag is placed inside the core mold cavity and filled with inert gas to ensure it adheres to the inner wall of the core mold; fluid propellant is injected into the cavity between the core mold and the shell through an injection port, followed by electrothermal heating to achieve isothermal curing; during storage and transportation, heating is continuously controlled to maintain the propellant grain temperature and prevent performance degradation. This method achieves integrated propellant grain forming and temperature-controlled protection, effectively improving process accuracy and storage reliability.

This utility model discloses a socket, including a housing, an inner bracket disposed within the housing, and neutral wire conductive plates, ground wire conductive plates, live wire conductive plates, and terminals disposed within the inner bracket. The inner bracket includes a lower bracket cover, a middle bracket, and an upper bracket cover. The middle bracket is disposed between the lower bracket cover and the upper bracket cover. The neutral wire conductive plate is located between the lower bracket cover and the middle bracket. The ground wire conductive plate is located between the lower bracket cover and the upper bracket cover and on one side of the middle bracket. The live wire conductive plate is located between the upper bracket cover and the middle bracket. The terminals are disposed on the lower bracket cover. The unique layered design of the inner bracket, combined with the layout of the conductive plates, effectively separates the conductive components. The addition of a protective door assembly greatly improves electrical safety. The inclined terminal block design not only ensures the stability of the electrical connection but also optimizes the wiring operation process, making it particularly suitable for installation scenarios with limited space or special angles.