A pulse detonation engine(PDE) with diameter and length of 61mm and 1140mm respectively

was used to get the heat loads of detonation tubes which were designed into two types.The first one is that its heat transfer was controlled by natural convection and thermal radiation

and the other one was mainly influenced by forced convection.The same relations between heat load and working frequency were acquired in two conditions

namely

the heat load increased along with the increase of working frequency.However

with the doubling of the frequency from 20Hz to 40Hz(or from 25Hz to 50Hz) of the detonation tube

the heat load increased more than 100%.In addition

the vaporizing rate of kerosene was got at different frequencies

providing a reference for the design of PDE evaporator.