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					HRR2 Development                   Federal Aviation
                                   Administration
Task Group
2011 June Materials Meeting
Bremen, Germany




  Materials Working Group
  Michael Burns, FAA Tech Center
  June, 2011
Agenda

•      Sub Task Team Updates (1 – 5)
•      HRR2 Prototype
•      HRR2 Development Plan Timeline
•      Interesting Observations
•      Next



Heat Release Rate - Part 25 Task Group   Federal Aviation   2
June 2011                                Administration
                  HRR2 DEVELOPMENT PLAN
Sub Task
                      Team Leader                     Improvement Area
Group #
                   Martin Spencer            Thermopile
                   Marlin Engineering
    #1             Tim Earl                  Globar/Heater Box
                   GBH International / FTT

                   Segundo Vargas            Upper Section, Lower Section/Insulation
    #2             Custom Scientific Inc.

                                             Airflow, Specimens (Advance materials or
                   Bill Mountain
    #3             The Boeing Co.
                                             materials that affect upper / lower pilot)


                   Fred Schall               Heat Flux
                   Govmark Inc.              Methane Gas Calibration/Performance
    #4             Nimisha Kaul
                   Weber Aircraft            Material Baseline
                   Michael Miler             Standardized Checklist / Operating Procedures,
    #5             Schneller, LLC.           Update /Rewrite Handbook - Chapter 5


Heat Release Rate - Part 25 Task Group                                Federal Aviation    3
June 2011                                                             Administration
Sub Task Group #1
Martin Spencer / Tim Earl

 Martin Spencer (Marlin Engineering)
    Thermopile
       –      Research Plan




Heat Release Rate - Part 25 Task Group   Federal Aviation   4
June 2011                                Administration
Sub Task Group #1
Martin Spencer / Tim Earl

 Tim Earl (GBH International / FTT)
    Globar / Heater Box
 • Exploring electric panel option
 • 9” x 12” panel like that used in insulation test
 • Panel shipped to Mike Burns for trial
 • Awaiting trial results




Heat Release Rate - Part 25 Task Group   Federal Aviation   5
June 2011                                Administration
 Sub Task Group #2
 Segundo Vargas (Custom Scientific Instruments Inc.)
Upper Section / Lower Section / Insulation
The two conditions: overlapping flanges and no flanges in the fabrication of the
Inner Cone, Outer Cone and Chimney in the Upper Section of the Heat Release
Rate Apparatus have been tested. The flanges were 3/8” wide. All other
conditions kept constant as much as possible, including insulation and design of
other chamber components. The results show :
No flanges – 60.02 Peak HRR (kW/m²)
Four Flanges – 57.05 peak HRR (kW/m²)
The difference between the two construction configurations is about 5%.
Observation - Results indicate that the design without the flanges provides the
more conservative test results.
Future tests are planned for the main burn chamber (Lower Section) to be
conducted this summer. Including sample holders, clean-out doors and viewing
windows.

  Heat Release Rate - Part 25 Task Group                      Federal Aviation    6
  June 2011                                                   Administration
Sub Task Group #3
Bill Mountain (The Boeing Co.)
Airflow
      –      Separate Chamber / Cooling Airflow (High Pressure System)
            Replace orifice plate/mercury manometer with sonic choke/pressure gage

      –      Feasibility of validating flows using anemometer (Low Pressure
             System)

Air/Methane
      –      Standardize flame profile / flow rates

Specimens
      –     Develop Recommendations Addressing:
            • Swelling (covering lower pilot)
            • Shrinking / Popping / delaminating / exploding specimens
            • Dripping / Melting away from holder
            • Fire Retardant (Effects on pilot flames)
            • > 1.75” materials


Heat Release Rate - Part 25 Task Group                          Federal Aviation     7
June 2011                                                       Administration
Sub Task Group #4
Fred Schall (Govmark Inc.)
Nimisha Kaul (Weber Aircraft)
 Heat Flux
     –   Assisted FAA Tech Center in preliminary Testing.
     –   Standardize method of setting heat flux
              •    Steady State vs. Intermittent
       –      Standardize sample preheat location

 Methane Gas Calibration / Performance Criteria

 Material Baseline
 •    Evaluating the possibility of a single standard reference material for all
      test method evaluation. Current limitations:
       –      Every test facility has its own set of standards
       –      Material availability
 •         Once the HRR test method optimization is complete, a material
           baseline would be established in order to ensure continued validity of
           past data.


Heat Release Rate - Part 25 Task Group                           Federal Aviation   8
June 2011                                                        Administration
Sub Task Group #5
Michael Miler (Schneller, LLC.)


 Standardized Checklist / Operating
     Procedures
    – Conformity Inspection Criteria
    – Hot / Cold Inspection
    – Validation Of Software
    – Interval Recommendations
    – Sample Preparation
    – Testing

 Update / Rewrite Handbook - Chapter 5

Heat Release Rate - Part 25 Task Group   Federal Aviation   9
June 2011                                Administration
       HRR2 Prototype Development




Heat Release Rate - Part 25 Task Group   Federal Aviation   10
June 2011                                Administration
 HRR2 Development Plan Timeline
  The goal of this plan is to eliminate or reduce a major portion
  of variables that may have an impact on data produced in the
  Heat Release Rate test apparatus.
  11/01/2010 - 11/01/2011 (4 months remain)
  Focused on how to update the heat release tester (HRR2) with
  the latest technologies as well as standardizing and improving
  the test method itself.
  11/01/2011 - 05/01/2012
  Focused on establishing pass/fail criteria based on the
  improvements that were made that could have impacted
  results of current approved aviation materials.
   05/01/2012 - 11/01/2012
  Update chapter 5 of the FAA Fire Test Handbook.

Heat Release Rate - Part 25 Task Group                Federal Aviation   11
June 2011                                             Administration
  OSU2 AIRFLOW PATTERN                   OSU1 AIRFLOW PATTERN




Heat Release Rate - Part 25 Task Group          Federal Aviation   12
June 2011                                       Administration
                               Raw Data Insitu vs. Transient Heat Flux Measurement in OSU

        3.75


        3.70


        3.65


        3.60


        3.55
W/cm2




        3.50


        3.45


        3.40


        3.35


        3.30


        3.25



          Heat Release Rate - Part 25 Task Group                                      Federal Aviation
          June 2011                                                                   Administration
3.75

                  3.64 W/cm2                                                                             3.62 W/cm2
3.70



3.65



3.60
              60 Second Average                                                                       60 Second Average
                                                                    3.48
3.55                                                                W/cm2



3.50
                                  3.50
                                  W/cm2
                                                                                     3.46 W/cm2
3.45


                                                 3.47 W/cm2
3.40
                                                15 Second Average Repeated 4 times

3.35



3.30



3.25




       Heat Release Rate - Part 25 Task Group                                              Federal Aviation
       June 2011                                                                           Administration
Questions / Comments?


  “The cost of living is going up and the chance of
  living is going down.”
                                         Unknown Author




Heat Release Rate - Part 25 Task Group                    Federal Aviation
June 2011                                                 Administration

				
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