For the purpose of reducing the axial length of pulse detonation chamber and the DDT(deflagration to detonation transition) distance by the spiral pulse detonation chamber

the results of experimental investigation on spiral pulse detonation chamber using liquid gasoline and air mixture were presented. Results show that

compared with straight pulse detonation chamber

the DDT distance has reduced 11.2% at least by the spiral pulse detonation chamber; the spiral pulse detonation chamber can work stably under the frequency of 5~20Hz; the spiral pulse detonation chamber design is a successful one.