O2Sim Full Mission Hypoxia Trainer

Recognition and mitigation of the effects of hypoxia at higher altitudes are essential for Pilot Readiness. The O2Sim is a simulator solution for mask-on hypoxia training using Reduced Oxygen Breathing Devices (ROBD). In the O2Sim the pilot trains for oxygen related emergencies and learns to recognize the effects of hypoxia in a realistic task environment, carrying out a demanding mission. The workload in the training is just as high as in the real aircraft!

ROBD training

The ROBD simulates the varying altitudes of the aircraft or the pressure cabin through a mask, and inside the simulator, the oxygen regulator panel is connected to the ROBD as well. This enables the training of standard procedures, like recoveries to lower altitudes and switching the regulator to 100% oxygen

D-SIM for interfacing

Our D-SIM software provides the interface between the ROBD and all other simulator components, like the oxygen regulator and the instructor panel. In D-SIM the instructor can easily control, monitor and debrief the ROBD training. This just requires access to a standard browser.

With D-SIM, the ROBD training can be integrated in any existing simulator, or as a stand-alone solution.

Distributed training

In addition, the integration of the ROBD in the D-SIM framework makes hypoxia training fully scalable over distributed networks. Multiple ROBD devices can be coupled for crew training, or networked multi-ship training. From a D-SIM Simulator Interface Module the instructor can easily control multiple ROBD simulations.


ROBD devices are safe. The ROBD device is coupled to a pulse-oximeter on the forehead and will switch to 100% oxygen when too low levels are reached. In addition to this safety loop, D-SIM is also coupled directly to the pulse-oximeter output and provides direct feedback to the instructor behind the console. The output is connected to a hard-coded safety loop inside the software logic that will stop the training safely in case of too low oxygenation levels or ROBD failures.