Multi-tube spiral fan-shaped pulse detonation combustion chamber

The invention provides a multi-pipe spiral fan-shaped pulse detonation combustion chamber for a pulse detonation turbine engine. The multi-pipe spiral fan-shaped pulse detonation combustion chamber comprises a diffuser, a multi-pipe spiral fan-shaped detonation pipe, an oil supply pipe, a combustion chamber outer case, a combustion chamber inner case and an outlet pressure stabilizing cavity. Airflow is divided into two parts after passing through a diffuser, one part flows into an oil supply mixing section from an air inlet cone at the head of a spiral fan-shaped detonation tube and is mixed with fuel oil sprayed out of a nozzle of the oil supply mixing section, combustible mixed gas enters an ignition detonation section and is ignited by a thermal jet igniter, and detonation waves are formed after the detonation-to-detonation process; and the other part flows through the outer wall of the detonation tube to cool the detonation tube. And the two air flows are mixed in the outlet pressure stabilizing cavity,