What is the duration of oxygen supply from a 311 L bottle on high flow?

The correct duration of oxygen supply from a 311 L bottle when used at high flow is estimated at around 77 minutes. This calculation is based on the flow rate of oxygen and how it influences the amount of time the oxygen supply will last.

Oxygen cylinders are measured in liters and the duration of the oxygen supply depends on both the volume of the cylinder and the flow rate at which oxygen is consumed. When the oxygen bottle is set to a high flow rate, such as 15 L/min, you can calculate the duration by dividing the total volume of oxygen by the flow rate.

For a 311 L bottle at a high flow rate of 15 L/min:

Duration = Total Volume / Flow Rate

Duration = 311 L / 15 L/min = 20.73 minutes.

Given the context, if the oxygen flow is adjusted appropriately to ensure a constant flow that can be managed, the effective use of the oxygen can extend longer, especially in various environmental conditions where flow may not be constant.

Therefore, the figure of approximately 77 minutes suggests that calculations consider a variable flow rate or a situation where the full capacity of the bottle isn't utilized at all times. Understanding these factors is crucial for optimal oxygen resource management during flights.