Brian Teears explains how fire dynamics has changed as a result of modern construction and, thus, why officers and firefighters must account for this in terms of how heat, air and water interact.

A Note from Jim: The stated objective of this story is to introduce you to some notions that may be of imme-diate help to circle track engines operating under rules that allow non-OEM parts. It is ...

Over time, and in this column, we have shared some of the important factors in how the delivery of air/fuel charges or raw air, as in the case of dry flow when fuel is admitted into the combustion ...

Directional-control valves are vital in any pneumatic circuit, directing or blocking airflow to control the speed or sequence of operations. One method of classifying directional-control valves is by ...