HEN Demonstration Burn - 2 room fire transitional attack

[@op3l]

I've always wondered why I always just see a jet stream of water instead of a fan or a cone. Would make the water cover more surface area and if need penetration, then switch to jet stream.

[@JB91710]

That was just a demonstration of Fountain Statue Firefighting. You don't squirt water on one spot endlessly and call that firefighting.

[@robert5344]

pretty sure they did that just to show what the nozzle can do

[@JB91710]

@robert5344 They could do that and also show how it could get the job done. Most humans don't think and understand. They watch and mimic, and so, the Fountain Statue comment.

[@Rescue-mt7fl]

While you wouldn’t hold water in one spot “endlessly” a water stream flowing 150-180 gpm or greater will cling to the surfaces and perform as good of a job if not better than whipping the nozzle around as we were taught for decades. Water mapping (see FSRI) studies show us that we can effectively knock down a fire as demonstrated here with limited nozzle movement. Many times we can accomplish this through hitting ceiling at high center from just outside the doorway or window and then moving it left for a few second then right for a few seconds. Coming in and whipping the nozzle around in various patterns, simply makes us feel better, it makes us think we are actually doing something, vs knowing what the water is actually doing and conserving our energy. That being said, this nozzle fails to demonstrate what problem they are trying to fix. It’s still a broken stream. Broken streams still entrain more air than straight streams. If you’re simply saying it’s a fog that entrains less air. Why wouldn’t you simply use a straight stream or solid stream to accomplish the task and have less air entrainment. Another reason for not whipping the hen nozzle around vs keeping centered is also because as a broken stream, whipping the nozzle around would cause it to entrain air at the same or close the same rate as a conventional full fog.