design of jet fuel tank design of jet fuel tank military aircraft

Therefore, adopting protective measures to prevent fuel tank ignition and explosion directly contributes to aircraft safety. Statistics show that the ignition and explosion of the fuel system are the main causes of aircraft damage and disassembly. įor aircraft, the fuel tank is an important component whose vulnerable areas account for more than 75% of the total volume. Importantly, extensive attention is paid to the safety of fuel in the industrial process and the reuse of green energy. A large number of new technologies are applied to energy and fuel cells. In recent years, energy and fuel have become research highlights. However, the implosion effect of the energetic fragments released about 3 times the chemical energy of its own kinetic energy, and the high-temperature and high-pressure products were very beneficial to the disintegration and ignition of the fuel tank compared to inert fragments. This shows that increasing the mass of inert fragments will increase the minimum ignition speed and reduce the probability of ignition of the fuel. In addition, the minimum ignition speeds of inerted fragments with different masses as predicted by the ignition criterion when hitting the liquid fuel are consistent with the test results. The calculation results show that the internal oxygen concentration was always lower than the limiting oxygen concentration (12%) before the fuel tank was disassembled.

When the fragments hit the gas phase of the tank, the fuel tank was not disassembled and the fuel was not ignited.

Experimental results show that the disassembly of a fuel tank is a prerequisite for igniting fuel. Then, a ballistic gun, a 37 mm gun and a two-stage light-gas gun were used to propel different fragments in tank damage experiments at different speeds (1400 m/s–2600 m/s).

In this study, an equivalent inert fuel tank with fire and explosion suppression was designed according to the vulnerabilities of a typical fighter. Nowadays, aircraft fuel tanks are protected by measures such as inerting, fire and explosion suppression, which significantly improve their ability to mitigate mechanical damage and prevent fire in the case of an accidental attack.

Design of jet fuel tank design of jet fuel tank military aircraft