On the Boeing 787, what type of oxygen flow is provided by the emergency oxygen system?

On the Boeing 787, what type of oxygen flow is provided by the emergency oxygen system?

• A. Gaseous oxygen flow
• B. Liquid oxygen flow
• C. Solid oxygen flow
• D. Compressed air flow

Answer: (A)

The emergency oxygen flow provided on the Boeing 787 is gaseous oxygen. In this system, oxygen is produced and delivered as a gas to the masks to supply breathable oxygen at high altitude. The masks use chemical oxygen generators (which contain a solid chemical) that, when activated, generate oxygen gas immediately. Liquid oxygen storage or solid oxygen flow would require different, heavier hardware, and compressed air would not provide the necessary pure oxygen concentration. So the oxygen delivered to occupants is in gaseous form.

The emergency oxygen flow provided on the Boeing 787 is gaseous oxygen. In this system, oxygen is produced and delivered as a gas to the masks to supply breathable oxygen at high altitude. The masks use chemical oxygen generators (which contain a solid chemical) that, when activated, generate oxygen gas immediately. Liquid oxygen storage or solid oxygen flow would require different, heavier hardware, and compressed air would not provide the necessary pure oxygen concentration. So the oxygen delivered to occupants is in gaseous form.