Debris-free combustible aerial shell with improved pyrotechnic dispersion

A method of igniting and dispersing a pyrotechnic effect comprising:

• providing an aerial shell comprising at least one combustible layer of combustible material, the aerial shell comprising an outermost combustible layer surrounding the at least one combustible layer, the outermost combustible layer ignited to thereby subsequently ignite the at least one combustible layer on substantially an entire outer surface, the outermost combustible layer comprising a higher combustion rate than the at least one combustible layer;
• the at least one combustible layer comprising an innermost combustible layer surrounding and containing at least one pyrotechnic effect and a dispersive explosive charge;
• the at least one pyrotechnic effect is disposed in a predetermined pattern with respect to the innermost combustible layer, the predetermined pattern one of disposed immediately adjacent or integral with an inner surface of the innermost combustible layer and disposed spaced away from the inner surface of the innermost combustible layer;
• igniting the at least one combustible layer to burn substantially throughout the at least one combustible layer to thereby ignite the dispersive explosive charge to thereby disperse the at least one pyrotechnic effect.