The internal pyrotechnic load in a shell designed to break or burst the shell at a predetermined time and height, igniting and spreading the contents of the shell.

a quantity of explosive to be set off at one time; "this cartridge has a powder charge of 50 grains"

The charge in a shell or rocket which is ignited by the lifting charge at the top of its ascent, exploding the firework and igniting the stars or other effects.

The center of an aerial shell or other shell type device. This breaks the outer casing of the device and lights the stars that are inside of it. Flash powder is used in salute shells and professional display shells. Black powder is used in consumer shells, and effect shells.

The force of an explosive that breaks the casing of a projectile to produce a demolition, fragmentation, or chemical action.