OBOGS for M-346 [ Return towards  Military training aircrafts  ]

The M346 is a new generation aircraft with outstanding aerodynamic capacities, which therefore needed an oxygen system in line with its performance capability. With its advanced technological expertise and its long experience in oxygen generation and distribution Air Liquide was able to meet the challenge and support the M-346 programme.

The effectiveness of our system now provides unlimited autonomy in aeronautical oxygen. Flight safety is thereby optimized and future customers of Aermacchi will now be able to be free from complex oxygen logistics. Oxygen is no longer a limiting factor in terms of mission duration and flight safety is optimized.

The OBOGS system developed for Aermacchi guarantees physiological protection for two pilots however long and complex their mission. It consists of an oxygen concentrator which generates the oxygen, two regulators which distribute the oxygen on demand to each of the pilots and two emergency cylinders to provide maximum comfort to the pilots whatever the flight phase, even during ejection phases.

The special feature of the OBOGS system developed by Air Liquide is that it is built in as a complete self-management system. The provision is more than just one or more pieces of equipment integrated on-board the aircraft since Air Liquide is here acting as main system manufacturer contributing its experience in order to guarantee the supply of oxygen to pilots in whatever conditions the aircraft might be find itself (inter alia ejection phases).

The Air Liquide regulators, designed on a patented electronic management principle, provide inter alia unparalleled effectiveness whatever the system inlet pressure. This special feature has the not inconsiderable advantage of optimizing the efficiency of the oxygen generating system while reducing the constraints imposed on the plane maker.
The programme has also been an opportunity to mass develop an emergency cylinder built into the ejector seat which, being in constant communication with the plane’s systems, automatically takes over from the concentrator in the event of ejection or failure of the oxygen system.