What is the function of a flow-limiting venturi in an aircraft system?

The function of a flow-limiting venturi in an aircraft system is primarily to regulate and limit the amount of air that can be drawn from the cross wing manifold. This is crucial for maintaining the balance and distribution of airflow within various aircraft systems, particularly in maintaining optimal conditions in the cabin and ensuring that the systems operate efficiently. By limiting the airflow, the venturi helps prevent overload on the system that could lead to turbulence or uncomfortable conditions for passengers and crew.

In this context, other options are not focused on the core function of the flow-limiting venturi. While enhancing airflow, maintaining temperature, or aiding in pressurization might be important aspects of an aircraft's environmental control systems, they do not directly pertain to the specific role of the flow-limiting venturi. This device is primarily about controlling the quantity of air that enters the system, making sure it operates within designed parameters.