10 nozzles from 3 typical types are chosen under experimental tests.The results show that all nozzles can augment the thrust of baseline pulse detonation engine(PDE)and there is an optimal nozzle area ratio where thrust augmentation is maximized.Amongst all tested nozzles
the maximal augmentation of 24% is attained by a convergent-divergent nozzle.Moreover
it is validated that fill-fraction has little effect on thrust augmentation.