4 results about "Chamber pressure" patented technology

The invention relates to an inner ballistic trajectory design method for a floating series double-chamber balance gun. The inner ballistic trajectory design method comprises the steps of dividing an inner ballistic trajectory process period, establishing a gunpowder combustion model in a main chamber and an auxiliary chamber, establishing a projectile motion model, establishing a balance body motion model, establishing an auxiliary chamber motion model and establishing an inner ballistic trajectory energy conservation model. Based on a novel floating series-connection double-chamber structure for a balance gun, construction of an inner ballistic model is completed, and optimization design is conducted on the chamber structure and charging parameters. The problem that a large-diameter barrel weapon generates high bore pressure under the high initial speed index can be effectively solved. On the premise that the maximum chamber pressure is not increased, secondary acceleration of the projectile is achieved, and the outlet speed and the flight performance of the projectile are remarkably improved. According to the method, an important theoretical reference and a practical technical method are provided for design and development of the high-initial-speed large-caliber balance gun in the future, and the method has wide application prospects and great military value.

The invention discloses a structure for launching steel balls in multiple directions, which realizes large-range space strike on coming unmanned aerial vehicles by optimizing a projectile launching mode. During launching, gunpowder gas is generated in the front combustion chamber and pushes the ejector rod, the ejector rod drives the gas closing block, and a bullet passing hole of the gas closing block and a bullet inlet hole in the bullet storage pipe are staggered, so that the bullet inlet hole is closed; after launching, the chamber pressure disappears, the return spring pushes the air closing block to return, the bullet passing hole of the air closing block is aligned with the bullet inlet hole in the bullet storage pipe, the bullet inlet hole is communicated with the bullet supply pipe, and the bullet supply spring pushes the bullet in the bullet supply pipe to enter the bullet storage pipe to wait for next-time launching.

This utility model discloses a 40mm tear gas smoke-generating riot control round for riot guns, relating to the field of riot control ammunition technology. The utility model includes a projectile assembly with a launching component at its bottom, and the projectile assembly includes an upper projectile body. By employing a high-low pressure chamber staged pressurization structure, the high-pressure chamber first accumulates energy during propellant combustion, then releases it to the low-pressure chamber through a pressure relief hole, propelling the projectile assembly to embed in the rifling and fly at high speed, increasing the range to ≥200m, with a maximum of 400m. This solves the problems of insufficient chamber pressure and limited range caused by the single high-pressure chamber design in existing technologies, meeting the needs of long-range law enforcement. It uses CS instead of CN as the irritant; CS is chemically stable, non-carcinogenic after combustion, has low skin irritation, and degrades quickly, resulting in minimal environmental impact. This solves the problems of toxic residues and health hazards associated with CN irritants in existing technologies, improving the safety of weapon use.