A conical nozzle is a type of nozzle that has a tapered shape, resembling a cone. It is commonly used in various applications, such as in rocket engines and spray systems, to control the flow of fluids or gases. The design allows for a smooth transition of the fluid, which helps to increase velocity and improve efficiency. These nozzles work by converting pressure energy into kinetic energy as the fluid passes through the narrowing section. This process enhances the speed of the fluid exiting the nozzle, making conical nozzles effective for tasks like fuel injection and aerosol dispersion.