Engine-driven pumps deliver fluid in what forms?

Engine-driven pumps are designed to deliver fluid in terms of volume rather than pressure. They can either provide a constant volume of fluid over a period or allow for variable volume delivery based on the needs of the system they are serving. This is essential in various applications, especially in aircraft hydraulics, where the demand for hydraulic fluid can change depending on the operating conditions and system requirements.

Choosing volume as the critical measurement aligns with how these pumps are utilized in real-world scenarios. Constant volume pumps maintain a steady flow rate, which is important in systems where consistent performance is required. In contrast, variable volume pumps can adjust their output to meet varying system demands, providing versatility and efficiency.

The emphasis on fluid volume over pressure is a vital concept in understanding how engine-driven pumps function in different environments, particularly in aviation hydraulics where managing resources efficiently can impact safety and performance.