In order to effectively reduce the risk of fuel tank explosion

the method of fuel flammability and oxygen concentration index focusing on the technology of the on-board inerting was introduced. According to the fuel explosion limit

the safe oxygen concentration of civil aircraft can be set as 12%

and that of military aircraft set as 9% by directly striking the fuel tank with the fire bomb to determine the maximum pressure. It analyzed the difference between equilibrium and non-equilibrium dissolution of gas in fuel oil and introduced the characteristics of separation membrane

the distribution of inerting gas and the simulation method. The development trend of on-board inerting technology in the future was analyzed. The results showed that: domestic inerting technology has become the mainstream inerting technology

but there is a lack of research on the flammability of domestic fuel

which can be further studied in the future. In addition

research on cooling inerting

green inerting

adsorption inerting and other technologies can be intensified

and it’s expected to have our own intellectual property rights.