Combustor Design Guidelines

A conventional ramjet combustion chamber is simply a hollow cylinder. Combustion chambers may be divided into single stage and two stages according to the organization of their combustion processes. A stabilized combustion chamber includes the following elements: (1) an installation for the introduction and atomization of the fuel; (2) ignition units; (3) turbulence rings; (4) flameholders; (5) mixers. Spark ignition, ignition by incandescent wire, and pyrotechnic ignition are possible means of igniting the fuel mixture. Spray, swirl and pneumatic injectors are used to feed the fuel into the combustion chamber. The design of individual elements depends upon the purpose and upon the dimensions of the combustion chamber.