Integrated deflagration-to-detonation obstacles and cooling fluid flow

A detonation chamber for a pulse detonation combustor comprising:

• a plurality of initiation obstacles disposed on at least a portion of an inner surface of the detonation chamber and defining a low pressure region at a trailing edge of each of the plurality of initiation obstacles, wherein the plurality of initiation obstacles are configured to enhance a turbulence of a fluid flow and flame acceleration through the detonation chamber;
• an inlet and an outlet, wherein the plurality of initiation obstacles are disposed between the inlet and the outlet;
• and
• at least one injector in fluid flow communication with each of the plurality of initiation obstacles, wherein the at least one injector provides a cooling fluid flow to each of the plurality of initiation obstacles,
• wherein the cooling fluid flow passes through each of the initiation obstacles and into the detonation chamber at the trailing edge of each of the initiation obstacles.

A pulse detonation combustor comprising:

• at least one detonation chamber;
• an oxidizer supply section for feeding an oxidizer into the detonation chamber;
• a fuel supply section for feeding a fuel into the detonation chamber;
• and
• an igniter for igniting a mixture of the gas and the fuel in the detonation chamber,
• wherein said detonation chamber comprises:
• a plurality of initiation obstacles disposed on an inner surface of the detonation chamber and defining a low pressure region at a trailing edge of each of the plurality of initiation obstacles, wherein the plurality of initiation obstacles are configured to enhance a turbulence of a fluid flow and flame acceleration through the detonation chamber;
• and
• at least one injector in fluid flow communication with each of the plurality of initiation obstacles, wherein the at least one injector provides a cooling fluid flow through each of the plurality of initiation obstacles.