Legear Engineering F.D. Consulting

05/05/2026

HEN Nozzles Key Hose

A premium hose like Sniper Turboed to 75psi backpressure with just 53lbs of Nozzle reaction flowing a full 150gpm. This is truly a zero nozzle whip kinking free operational super balanced hamdline attack package.

Then, you add in the HEN's Bladed pattern that is totally dominant in large droplet coverage that rapidly interacts with all surfaces and starts contracts gasses as soon as the nozzle is open. This creats exceptional rapid lift and global fire compartment cooling that is unmatched by any other smooth bore or fog nozzle of equal gallonage and strean velocity. It's a game changer in speed efficiency and effectiveness in suppression.

Equals the bright future of handline structural fire supression equipment wise. Spec and layout of equipment matters to the mission, get educated step out of your biases for us and them.

Omw to the End Of Trails fire conference .. Clackamas Fire

04/20/2026

Join me on Thursday, April 23. 3:30 to 5:15pm Room 120-122. For

Fire Stream Design, Development, and Application.

FDIC Fire Engineering Fire Safety Research Institute

10/13/2025

Understanding the Bladed fire streams impact point collection of surfaces and the strong impact of the The Coandă effect on it's out performance over straight and cone pattern, solid jets of water for suppression.

There are clear scientific reason the Bladed pattern is more effective and efficient they legacy fire service nozzle. Get into a modern fire stream development, for US and Them. Smooth Bore Cartel knows first hand how powerful this effect is collecting surface on hallway pushes and the entry ways of rooms.
HEN Nozzles Alex Cummings

Snip.... Coanda (/ˈkwɑːndə/ or /ˈkwæ-/) is the tendency of a fluid jet to stay attached to a surface of any form.[1] Merriam-Webster describes it as "the tendency of a jet of fluid emerging from an or***ce to follow an adjacent flat or curved surface and to entrain fluid from the surroundings so that a region of lower pressure develops."

09/29/2025

Come on out, on Oct the 3rd at 10:30am I will be presenting Understanding the Revolutionary Bladed Wildland Nozzle.

https://www.fireshowswest.com/theconference

One cannot make plain water more magical in BTU absorbing potential per gallon of water delivered to surfaces, however we can make it much more effective hence efficient, with a closer examination of the big three benchmark characteristics of fire stream development, Volume, Placement and Velocity
Fire streams are only as good as their Big 3 Characteristics, here are some Wildland gold standard fire stream development criteria:

1. Volume (Must meet Critical Flow for Fuel Package, and Delivery it to Surfaces Well)

2. Placement (Ideal Droplet Size = Large/Mass Benefits / Pattern for Coverage/Concentration, Blade vs Tight, in Fuels)

3. Velocity (Reach & Pe*******on / Outside Streams Should Capitalize on Stream Speed at a Premium, Combats Wind)

HEN Nozzles have developed the following sizes in the Wildland nozzle flow rates through a lit research review and discussion with wildland fire service experts, early 2023. The SME panel settled on 20 and 45 gpm @100 psi. Their goal field operational functional range is 75 to 100psi NP but work well down to 50psi NP and into the 125psi range. Trust but verifying concepts in Bladed/Tight fire stream delivery has been my goal during the introduction of this novel fire stream development nozzle.

These now proven Bladed placement enhancements with large droplets smooth bore fire-stream dynamics improve efficacy and effectiveness in suppression and was initial funded by the National Science Foundation.

Our carefully crafted conference program features some of the nation's top leaders in the fire service. Seize the opportunity to hone your skills and share stories with heavy-hitters in the industry.

06/06/2025

The Combination Bladed nozzle design is the most common sense advancement in fire stream development at the nozzle level for the last 100 years. Anyone that has studied this in detail knows the power of large droplets vs small droplets and stream dynamics that enhance placement delivery. Large amounts of suppression water developed by either 100psi fog nozzle or smooth bore tips in the wildland environment is wasted, either the small droplets being carried away on the wind and/or evaporating in transient or quickly dissipating upon heated/burning fuel interaction. Then on the simple smooth bore Tip side of the coin, water being drilled into the ground with very poor broken stream application production using a finger in the solid stream, providing inconsistent coverage and wet line production.

Leaders in the industry IAFC - International Association of Fire Chiefs (IAFC) need to become familiar with combination smooth bore nozzles produces both BLADE and Tight fire stream patterns that are important to comprehend as a disruptive wildland application methodology that will lead to better performance on the fireground in the mission of preserving life & property, during this increasing time of wildfire activity near built environments and in general.

This article breaks it down in detail, wildland pumping apparatus from Type 6 at around $200k to Type 3 at around $500k and structural Type 1s at 1 million dollars plus, are tasked with protecting billions of dollars of property should not field cheap plastic and metal wildland nozzles at low bid procurement.

Especially when there is a multiple awarded National Science Foundation (NSF) supported modern nozzle design with the goal metrics to produce a more efficient and effective fire stream, initially specifically for the wildland fire suppression. Our tax dollars produced just what those grants to HEN Nozzles where set out to provide the fire service industry, a better fire nozzle to increase the life and property preservation potential of the fire service per gallon delivered during suppression versus current common nozzle designs (Fog & Tip).

Embrace this Bladed Nozzle technology make your firefighters more effective, equipment spec matters, improvements in SCBAs, TIC etc happen so too now with nozzles, stay current your community is relying on your agencies to stay up to date and leverage any major advancements in the industry.

International Association of Fire Fighters (IAFF) U.S. Fire Administration California Department of Fish and Wildlife CAL FIRE U.S. Forest Service National Interagency Fire Center National Park Service Bureau of Land Management Wildland Firefighters U.S. Department of Agriculture U.S. Fish and Wildlife Service Wildland Firefighter International Association of Fire Fighters Insight Fire Training Smooth Bore Cartel Fully Involved Brothers In Battle, LLC FireNuggets

HEN’s wildland system represents the future of fire attack in handline operations in the wildland fire environment.

04/11/2025

Join me tomorrow Friday, April 11 at 10:30 am for
Fire Stream Design, Development, and Application
Room 101-102

This class will cover discussions points on handlines, single inlet mini monitor fire streams, and master stream development/application, with these three key areas brought into sharper focus: volume, placement, and velocity. Critical knowledge/understanding points will be addressed in handline attack package design from small to large. This will include the selection and implications of these key points: target flows handline to master stream, nozzle pressures, reaction force, backpressure, hose construction/design, pump plumbing/psi pickups, panel gauge design, applying suppression water from exterior positions vs. interior positions, on plane vs. off a plane, wind impacts, and hidden fire.

03/19/2025

Please join, Rick Mosher, Taylor Goodman and Kyle Thon at one of the 4 hour Hot Workshops at FDICFDIC on April 7th and 8th.
Also click on the long awaited Plumbing Dreams article below.

https://www.fireapparatusmagazine.com/fire-apparatus/accurate-panel-gauges-require-proper-knowledge-and-understanding/

Rick, Taylor, Kyle and I have been ensuring our pumpers panel read right, eliminating un captured plumbing and gating errors by sweating the important details at pre con and final. Our LEFDC "TRU" panel concepts ensure the IDLH handline will have the right pressure by eliminating gauge error from gating and unrecorded plumbing.

Here is a Podcast that goes into greater detail from Fire Apparatus & Emergency Equipment Moving Water: Accurate Pump Gauges

https://www.youtube.com/watch?v=jgEssSaRXn8

This problem is large even if not known or understood by the end user well, it can negatively impact attack package function. Key Hose 's Mark Lighthill and retired Elkhart RSM Mac McGary in fact went around producing per outlet Pump Charts for decades in the southeast to correct for these problems. If the pressure pickups are build true and correct addressing the uncapture friction loss, turbulence and gating error through simple measures, your handline firefighters will be much happier people.
https://www.fdic.com/.../engine-design-and-layout-for...

Fire Engineering

03/18/2025

Heat and Smoke, can travel at about 35fps (22 mph) without wind impact. In fact, it is a flow of force that can be dammed hiding its true potential as just some smoke behind some glass, until wrong window is taken, door is opened. A extremely fit person without PPE on may possibly crawl at a maximum of 2 mph (3' a sec). The smoke and heat have a 10x advantage. Learn your fire dynamics, fairly often the party that causes a problem, does not feel the negative effects, it's the other members on the fire ground. Low air intake, high exhaust keeps "surprising" members in the world wide fire service on scenes. It is common to hear when things go really bad on the fireground (rapid fire development, all types)..... it happened instanously. I have the position that of the best ways to make a firefighter preserve more life and property is through a fire understanding of fire dynamics. Fire by Trade Smooth Bore Cartel Fire Engineering FDIC FireNuggets Firehouse Vigilance Insight Fire Training International Association of Fire Fighters Fire Safety Research Institute

ULFSRI launched a set of new training resources designed to help the fire service better understand and respond to low-intake, high-exhaust fire scenarios.



This set of resources includes:

Lesson the Fire Safety Academy (FSA)
“Continuing the Conversation” handout on the FSA that can guide discussions after firefighters take the lesson
Simulation video demonstrating how fire conditions evolve in these scenarios and their impact on firefighter safety



These resources will assist firefighters in executing specific tasks that promote safe and effective operations while maintaining situational awareness. In addition, they will support company officers in making strategic decisions that protect their crews.