What is the most common type of apparatus fire pump found in the fire service today?

The midship pump is the most common type of apparatus fire pump used in the fire service today due to its advantageous positioning and operational capabilities. This pump is typically mounted midway between the front and rear axles of the fire apparatus, which allows for better weight distribution and stability of the vehicle while in operation.

The midship design not only maximizes the efficiency of the fire apparatus but also provides easier access for maintenance and repair. It facilitates the use of larger pump intakes and more extensive hose storage capabilities, making it a preferred choice for fire departments. The midship pump allows for greater flexibility in the design and configuration of the fire truck, enabling the incorporation of additional features and equipment necessary for effective firefighting.

Other types of pumps, while having specific uses, are less prevalent in modern fire service applications. Positive displacement pumps, for instance, are typically used in specialized situations rather than in standard fire apparatus. Piston and rotary pumps also serve specific functions within certain contexts but do not match the overall utility and popularity found with midship pumps in most firefighting scenarios.