# Presentation: 926443

## Navy Responsible Use Policy & Halon Alternative Implementation OpportunitiesPresented 29 August 2000 at:FAA’s International Aircraft Systems Fire Protection Working Group Meeting

*	**	*
*	**	*Presented by:*	*Bill Leach
- 				Naval Air Systems Command
- 				Fire Protection Team Leader

## NAVAIR FIRE PROTECTION TEAM

- NAWC Aircraft Division:  *Lakehurst*
- NAWC Aircraft Division:  *Pax River*
- NAWC Weapons Division:  *China Lake*
- Naval Research Laboratory
- Naval Aviation Depots

**Notes:**
-  We own not just a system design, but all responsibility of the system as it goes through it’s useful life in the Navy.  So, even though a unoccupied system design might be acceptable, we will continue to capture and consider the appropriate risk to maintenance personnel. 

## MISSION

***	******To ensure that ***_***all Naval aircraft***_*** are protected with adequate on-board and ground-based fire protection systems.***** **
**    *****To ***_***develop and implement***_*** halon alternative systems which do not diminish the current levels of aircraft survivability and aircrew safety.***

**Notes:**
Two points:
-  we fly FAA certified aircraft and want to continue to do so.

-  we have a responsibility to implement feasable alternatives and continue to succeed at that.

## HALON 1301

***NAVY RESPONSIBLE USE POLICY***
- -  STOCKPILE
- Support of In-Service Fleet
- Projected to 2032, if Necessary
- -  MINIMIZE USE
- New Maintenance Features
- Recycle / Reclaim / Reuse
- -  ALTERNATIVE R&D
- Develop Acceptable Alternatives
- Implement Acceptable Alternatives

## IMPLEMENTING HALON ALTERNATIVES--- THE EASY WAY ---

- New Aircraft
- Navy Success:  V-22 & H-1 Upgrade
- Apply HFC-125 Design Equation
- Totally Familiar System Design Approach and Qualification Procedure
*{Note:  Future discussion forthcoming to reconcile     DOD *_*equation*_* with FAA *_*number*_*}*

**Notes:**
-  tri service DOD program

-  equation ranges from 16% to 26% volumetric concentration

## IMPLEMENTING HALON ALTERNATIVES--- THE CLEVER WAY ---

- Aircraft with Redundant Halon Systems
- In-Service Aircraft
- Helos and Some Fixed Wing
- Navy Success:  CH-60
- Rewire Discharge Logic and Apply      HFC-125 Design Equation
- Dual Shot to Single Shot System
- Historical Mishap Evaluation to Convince Safety Community of Acceptability

**Notes:**
-  Army testing

-  fire mishap review

## IMPLEMENTING HALON ALTERNATIVES--- THE CHALLENGING WAY ---

- Aircraft w/o Redundant Halon Systems
- Rest of In-Service Fleet
- Navy Success:  F/A-18E/F
- HFC-125 with Redesigned Plumbing
- Other Options Also Researched
- Gas Generator & Fine Water Mist Systems
- Baseline to Halon, then *Qualify by Fire*

**Notes:**
-  resident smarts on three, not one system

-  tough to baseline, better than or equal to halon, based on system failure

## OTHER-THAN-ENGINE

- Dry Bays (Threat of Explosion)
- Navy Success:  F/A-18E/F & V-22
- Inert Gas Generator System
- “Muscled” Approach, Currently Evaluating Enhancements
- Saved V-22 Ship 10

**Notes:**
-  smarts not limited to military dry bays, any driver of explosion

## OTHER-THAN-ENGINE

- Fuel Tanks
- Long History of Protection
- OBIGGS, Foam
- On-going Development Efforts
- Active System
- Applicant for ARAC Membership (Don Bein)

**Notes:**
-  look forward to ARAC, tie to FAA certification of our aircraft

## OTHER-THAN-ENGINE

- Hidden Compartments / EE Bays
- Recent Testing
- Fine Water Mist System
- Aerosol Generator System

## CONCLUSIONS

- Halon Alternative R&D Has Been Very Fruitful
- Still Research Opportunities to Investigate
- Work Remaining:  More Engineering than Science
- Optimize Storage & Delivery vs. New Discoveries
- Acceptable Halon Alternative Solutions are Currently Available and Flying
- Halon is No Longer a _Technical_ Requirement for New Aircraft Designs
- Implementation of Halon Alternatives Is Proven
- Question to All of Us:
*If You Can Do It, Why Aren’t You??*

**Notes:**
-  Back to Responsible Use Policy, declare success on R&D.