OBIGGS for helicopter  [ 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 helicopter. Part of the oxygen contained in the fuel tank is replaced by Nitrogen, keeping the vapours non-flammable.

The OBIGGS includes a Temperature Control System, a filter, a pressure controller, an oxygen sensor and a separation module. Hence, compressed air is directly tapped on Helicopter engine air and transformed into NEA that can be directly distributed in the fuel tanks. Compact, the Air Liquide OBIGGS can be easily installed on the Helicopter. Besides, Air Liquide can support the customer to design the distribution system: Inerting modelling, piping sizing, 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.