Which component is used to increase bleed air flow through the venturi of the ACM?

Which component is used to increase bleed air flow through the venturi of the ACM?

• A. Venturi bypass valve
• B. Flow control valve
• C. Bleed air shutoff valve
• D. Flow increase valve

Answer: (D)

The thing being tested is how to boost the amount of bleed air going through the ACM’s venturi. The venturi relies on a controlled bleed air supply to create the needed pressure and flow for the air cycle machine’s cooling and conditioning cycle. When more flow is required, the Flow Increase valve opens to allow additional bleed air to pass through the venturi, increasing the mass flow and the ACM’s output. Why the other options aren’t the fit: bypassing the venturi would route air around it and actually reduce flow through the venturi; a flow control valve sets a target or regulates flow but isn’t specifically used to push more air through the venturi; and a bleed air shutoff valve would stop flow entirely.

The thing being tested is how to boost the amount of bleed air going through the ACM’s venturi. The venturi relies on a controlled bleed air supply to create the needed pressure and flow for the air cycle machine’s cooling and conditioning cycle. When more flow is required, the Flow Increase valve opens to allow additional bleed air to pass through the venturi, increasing the mass flow and the ACM’s output.

Why the other options aren’t the fit: bypassing the venturi would route air around it and actually reduce flow through the venturi; a flow control valve sets a target or regulates flow but isn’t specifically used to push more air through the venturi; and a bleed air shutoff valve would stop flow entirely.