What is the maximum percentage of oxygen the T-6 OBOGS can produce when the concentration lever is positioned in MAX?

What is the maximum percentage of oxygen the T-6 OBOGS can produce when the concentration lever is positioned in MAX?

• A. 100% O2
• B. 80% O2
• C. 95% O2
• D. 60% O2

Answer: (C)

OBOGS on the T-6 is designed to provide a high concentration of oxygen by concentrating it from ambient air, not by producing pure oxygen. The concentration lever set to MAX pushes the system to its highest achievable output, but practical limits of the adsorption and separation process mean you won’t reach 100% O2. The beds can remove most of the nitrogen, giving around 95% oxygen in the breathing gas. This level balances the need for a rich oxygen supply with safety considerations, since delivering pure oxygen (100%) continuously can increase the risk of oxygen toxicity and other hazards. So the maximum oxygen concentration you’d get from the T-6 OBOGS at MAX is about 95% O2.

OBOGS on the T-6 is designed to provide a high concentration of oxygen by concentrating it from ambient air, not by producing pure oxygen. The concentration lever set to MAX pushes the system to its highest achievable output, but practical limits of the adsorption and separation process mean you won’t reach 100% O2. The beds can remove most of the nitrogen, giving around 95% oxygen in the breathing gas. This level balances the need for a rich oxygen supply with safety considerations, since delivering pure oxygen (100%) continuously can increase the risk of oxygen toxicity and other hazards. So the maximum oxygen concentration you’d get from the T-6 OBOGS at MAX is about 95% O2.