In order to understand the aviation kerosene’s deposition characteristics under high temperature conditions

the RP-3 aviation kerosene’s deposition boundary temperature and characteristics under static state

the influences of different fuel inlet conditions and wall temperatures were studied by test. The results indicated that the deposition boundary temperature under static state was between 437-450 K

and the deposition rate decreased with the increase of test time. Increasing the flow velocity

and decreasing the fuel inlet temperature and the wall temperature can effectively reduce the deposition amount

and decreasing the fuel inlet temperature had the most effective impact. From the perspective of time scale

deposition accumulated slowly in the early stage

but increased significantly when a certain deposition amount had been formed. Taking the 400 K fuel inlet temperature

800 K wall temperature and 05 m/s flow velocity test as example

the deposition amount of 8 h and 12 h test was about 15 times and 7 times that of the 4 h test

respectively.