1D Modeling of an Onboard Inert Gas Generation System During Flight Conditions

In the event of an attack on aircraft or lightning strikes, there is a risk of fire in fuel tanks. Different methods are used to eliminate the risk of fire, one of which is to reduce the oxygen content in fuel tanks. OBIGGS (ONBOARD INERT GAS GENERATION SYSTEM) is a system that reduces the concentration of oxygen in the tank and increases the nitrogen partial pressure. This paper includes the 1D modeling of an OBIGGS application during flight. The results show that, 17 airplane crash has been reported until 2005 due to fuel tank explosion without usage of the OBIGGS and this study aims to show how this system prevents the explosions in any specific flight scenario.