OBIGGS for aircraft  [ Return towards  On-board inert gas generating systems  ]

Based on a hollow fiber separation process, the OBIGGS allows to produce during the mission the flow of Nitrogen Enriched Air (NEA) requested to protect the aircraft. Part of the oxygen contained in the fuel tank is replaced by Nitrogen, keeping the vapours non-flammable.
The OBIGGS includes a filtration chain, a pressure & temperature controller, an oxygen sensor and air separation modules. Depending on the applications, it can integrate a Temperature Management System to condition the bleed air. Compressed air is directly tapped an aircraft air circuit and transformed into NEA that is directly distributed in the fuel tanks.  
15-years experience in fuel tanks explosion reduction enables Air Liquide to support the customer also for the design the distribution system: Inerting modelling, piping sizing, NEA injection location, supply of distribution components. The use of the OBIGGS does not need any calibration or logistic operation before the flight. By means of the control of a selected set of signals generated by the OBIGGS, the crew is permanently aware of the status of the equipment.

• Use of well-proven AL components system
• No calibration nor logistic
• Reduced schedule maintenance
• Full Air Liquide support for OBIGGS integration and gas distribution design

• Separation by MEDAL hollow fibers membrane
• Integrated controller including a pressure regulator, A shut-off valve, a flow regulator and an oxygen analyser

• Qualified according to MIL-STD standards

• Alenia C27J military cargo aircraft
• CASA-EADS C295 military cargo aircraft
• Aero Vodochody L159 training / fighter aircraft