Buried radial flow stereolithographic rocket motor

A fuel grain for providing an exhaust, comprising:

• a solid fuel body;
• a solid fuel core;
• an entry having an entry gas flow;
• an exit having an exit gas flow for passing a gas through the fuel grain between the entry and the exit;
• at least one initial channel disposed between the entry and exit, the solid fuel body and solid fuel core at least partially defining the initial channel;
• and
• at least one buried channel disposed between the entry and exit, the solid fuel body and solid fuel core at least partially defining the at least one buried channel.

A rocket motor for providing an exhaust, comprising:

• a fuel grain defining internal channels through which gas is to pass, the fuel grain comprising a solid fuel body, the fuel grain comprising a solid fuel core, the fuel grain comprising an entry having an entry gas flow, the fuel grain comprising an exit having an exit gas flow for passing the gas through the fuel grain between the entry and the exit, the fuel grain comprising an initial channel disposed between the entry and exit, the solid fuel body and solid fuel core at least partially define the initial channel, the fuel grain comprising a buried channel disposed between the entry and exit, the solid fuel body and solid fuel core at least partially define the buried channel;
• at least one igniter proximal the entry and distal the exit, the igniter for igniting the solid fuel body and solid fuel core proximal entry for creating combustion gases, the combustion gases passing through the initial channel upon a first ignition and not passing through the buried channel, the combustion gases passing through the buried channel after the first ignition, the combustion gases exiting the fuel grain through the exit as the exhaust, wherein the initial channel has an initial gas flow and the buried channel has a subsequent gas flow;
• an intake means for providing an oxidizer at the entry;
• and
• an exhaust means for providing the exhaust at the exit.