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.

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 ...

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 ...

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 ...