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					NexGen Fire Test                    Federal Aviation
                                    Administration

Burner Update




Presented to: IAMFTWG, Renton, WA
By: Robert I. Ochs
Date: Thursday, March 4, 2010
What’s New?
               • FAATC recently received a NexGen burner
                 manufactured from the plans on the fire safety website
                             http://www.fire.tc.faa.gov/pdf/materials/NexGenPlans.pdf
               • This is the first replica that the FAATC has seen, and will
                 be a good chance to determine the reproducibility of the
                 burner from the FAA’s drawings




 NexGen Burner Update                                              Federal Aviation     2
 March 4, 2010, Renton, WA                                         Administration
Burner Components
          Draft Tube         Back Section




          Burner Cone           Fuel Tube




                             Turbulator and Stator




 NexGen Burner Update                Federal Aviation   3
 March 4, 2010, Renton, WA           Administration
Closer Look at Back Section


                            Back Section




NexGen Burner Update             Federal Aviation   4
March 4, 2010, Renton, WA        Administration
Fuel Nozzle
• Burner came with a Monarch 5.5 gph 80° PL
  nozzle, as specified in the drawings
• When received, the nozzle was bench tested
  for fuel flow rate as a function of fuel
  pressure and temperature
                                  Fuel Inlet
            Nozzle          Temperature Pressure Volume Flow Rate
                                                        Flow Rate
            ME NexGen           43           120   335      5.3
                                                            5.3
            FAA NexGen          45           120   380      6.0
                                                            6.0
            FAA Spare           43           120   365      5.8




NexGen Burner Update                                    Federal Aviation   5
March 4, 2010, Renton, WA                               Administration
NexGen Burner Update        Federal Aviation   6
March 4, 2010, Renton, WA   Administration
Comparison Tests
 • New NexGen burner was tested against an
   FAATC-built NexGen burner
       – FAA NexGen had machined stator and turbulator
         from Marlin Engineering
                                                  Measured Flame Temperature

                         2100

                         2050

                         2000
       Temperature, °F




                         1950
                                                                                                  FAATC NG
                         1900
                                                                                                  ME NG
                         1850

                         1800

                         1750

                         1700
                                TC1   TC2   TC3        TC4       TC5     TC6   TC7      TAVG
                                                        Thermocouple
NexGen Burner Update                                                           Federal Aviation              7
March 4, 2010, Renton, WA                                                      Administration
                            Materials Tested on Picture Frame:
                            TexTech Industries Polyacrylonitrile
                            19186-8579R: 9 oz/yd2
                            9348-8611R: 16 oz/yd2




NexGen Burner Update                                             Federal Aviation   8
March 4, 2010, Renton, WA                                        Administration
                                                                   Measured Burnthrough Times
                                                                       Average of 4 Tests

                         300.00


                                                 50




                                                              25
                                               8.
                                            25




                                                            7.
                                                         24
                         250.00




                                                                                            25
Burnthrough Time, sec.




                                                                                          9.




                                                                                                         50
                                                                                       19




                                                                                                       5.
                         200.00




                                                                                                    18
                                                                                                                                 FAATC NEXGEN
                         150.00
                                                                                                                                 ME NEXGEN

                         100.00


                          50.00


                           0.00
                                                  9348-8611                                 19186-8579
                                                                         Material ID




                         NexGen Burner Update                                                                 Federal Aviation               9
                         March 4, 2010, Renton, WA                                                            Administration
                                                       % Standard Deviation
                                                        Average of 4 Tests

                        5.00




                                                                                            05
                                                                                         4.
                        4.00
 % Standard Deviation




                                                                           88
                                                                        2.
                        3.00
                                                                                                                    FAATC NEXGEN
                                                                                                                    ME NEXGEN
                        2.00
                                                  56
                                               1.
                                  92
                               0.




                        1.00



                        0.00
                                       9348-8611                                19186-8579
                                                         Material ID




NexGen Burner Update                                                                             Federal Aviation               10
March 4, 2010, Renton, WA                                                                        Administration
                                           Measured Flame Temperature
                                           Effect of Fuel Nozzle and Cone

                  2100

                  2050

                  2000
Temperature, °F




                  1950
                                                                                       ME NG
                  1900                                                                 ME w/FAA NOZ
                                                                                       ME w/FAA NOZ + CONE
                  1850

                  1800

                  1750

                  1700
                         TC1   TC2   TC3     TC4      TC5     TC6      TC7   TAVG
                                             Thermocouple




       NexGen Burner Update                                                   Federal Aviation          11
       March 4, 2010, Renton, WA                                              Administration
                                                                    Measured Burnthrough Times
                                                                     Effect of Nozzle and Cone




                                                            50
                          300.00




                                                          3.
                                                  50




                                                                      50
                                                       27
                                        25


                                                8.




                                                                    8.
                                             25




                                                                 25
                                      7.
                                   24


                          250.00




                                                                                                                  50
                                                                                                        50




                                                                                                                            25
                                                                                                                1.
                                                                                                      0.
 Burnthrough Time, sec.




                                                                                                             21
                                                                                                   21




                                                                                                                          9.
                                                                                              50




                                                                                                                       19
                                                                                            5.
                                                                                         18
                          200.00
                                                                                                                                       ME NEXGEN
                                                                                                                                       ME w/ FAA Noz
                          150.00
                                                                                                                                       ME w/ FAA Noz + Cone
                                                                                                                                       FAATC NEXGEN
                          100.00


                           50.00


                            0.00
                                               9348-8611                                             19186-8579
                                                                           Material ID




NexGen Burner Update                                                                                                        Federal Aviation           12
March 4, 2010, Renton, WA                                                                                                   Administration
NexGen Burner Update        Federal Aviation   13
March 4, 2010, Renton, WA   Administration
NexGen Burner Update        Federal Aviation   14
March 4, 2010, Renton, WA   Administration
Summary of Testing

• The ME NexGen burner was built according to the
  specifications with only minor discrepancies
• The ME nozzle did not deliver the minimum 5.7 gph, so a
  spare FAA nozzle was installed
• The ME burner had an average flame temperature about 30°F
  higher than the FAA burner
• The ME burner had slightly quicker burnthrough times, on
  average about 12 seconds.
• The FAA nozzle and cone were installed on the ME burner,
  and brought the average flame temperature and burnthrough
  times closer to that of the FAA burner
• More work needs to be done to determine the exact cause of
  the nozzle and cone effects



NexGen Burner Update                         Federal Aviation   15
March 4, 2010, Renton, WA                    Administration
 FAA Flow Visualization Laboratory
             Enclosure                                   PC with acquisition and
Particle                         Automated Traverse      analysis software
Seeder




                                Camera

           Laser Head




                                                                                           Light Sheet
                                                                                           Optics
                                                      Camera




                                                               Jet Nozzle


    NexGen Burner Update                                                Federal Aviation            16
    March 4, 2010, Renton, WA                                           Administration
                                         Field of View

             Camera                                              Light Sheet
                                                                 Optics




                            Jet Nozzle




NexGen Burner Update                                     Federal Aviation      17
March 4, 2010, Renton, WA                                Administration
NexGen Burner Update        Federal Aviation   18
March 4, 2010, Renton, WA   Administration
Calibration Objectives

• Velocity measurements of a turbulent jet
      – Velocity profile at various Re, x
      – Velocity fluctuations (turbulence)
• Compare results with data published in
  literature
• Determine accuracy of measurements
  before proceeding with NexGen burner
  analysis


NexGen Burner Update                         Federal Aviation   19
March 4, 2010, Renton, WA                    Administration
Questions, Comments, Concerns?

Contact:
Robert Ochs
DOT/FAA Tech Center
BLDG 287
Atlantic City Int’l Airport
NJ 08405
robert.ochs@faa.gov
1 (609) 485 4651



NexGen Burner Update          Federal Aviation   20
March 4, 2010, Renton, WA     Administration

				
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