What is the approximate capacity of the engine-driven hydraulic pump?

The approximate capacity of the engine-driven hydraulic pump is generally around 1 quart. This capacity is common in various hydraulic systems, especially in smaller aircraft where hydraulic functions, such as landing gear operation and control surfaces, require a pressurized fluid supply. The design of these hydraulic systems often involves compact components, making a 1-quart capacity a practical choice to balance efficiency and space constraints.

In larger or more complex systems, a higher capacity might be necessary; however, the specific context of the question suggests a simpler hydraulic setup where 1 quart is sufficient to meet operational needs without unnecessarily increasing weight or complexity. Understanding the typical capacities of hydraulic systems is essential for anyone studying aviation or fluid dynamics, as it helps in assessing system behavior under various operational conditions.