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Presented to: IAMFTWG, Köln, Germany
By: Robert I. Ochs
Date: Thursday, June 24, 2010
Federal AviationAdministrationNexGen Fire Test
Burner Update
2Federal AviationAdministration
NexGen Fire Test Burner UpdateIAMFTWG, Köln, Germany
What’s New?• FAATC recently received a NexGen burner
manufactured from the plans on the fire safety websitehttp://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
3Federal AviationAdministration
NexGen Fire Test Burner UpdateIAMFTWG, Köln, Germany
Burner ComponentsDraft Tube
Burner Cone
Back Section
Fuel Tube
Turbulator and Stator
4Federal AviationAdministration
NexGen Fire Test Burner UpdateIAMFTWG, Köln, Germany
Closer Look at Back Section
Back Section
5Federal AviationAdministration
NexGen Fire Test Burner UpdateIAMFTWG, Köln, Germany
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
Nozzle Temperature Pressure Volume Flow RateME NexGen 43 120 335 5.3FAA NexGen 45 120 380 6.0FAA Spare 43 120 365 5.8
Fuel InletNozzle Temperature Pressure Volume Flow RateME NexGen 43 120 335 5.3FAA NexGen 45 120 380 6.0
Fuel Inlet
7Federal AviationAdministration
NexGen Fire Test Burner UpdateIAMFTWG, Köln, Germany
Measured Flame Temperature
1700
1750
1800
1850
1900
1950
2000
2050
2100
TC1 TC2 TC3 TC4 TC5 TC6 TC7 TAVG
Thermocouple
Tem
per
atu
re,
°F
FAATC NG
ME NG
Comparison Tests• New NexGen burner was tested against an
FAATC-built NexGen burner– FAA NexGen had machined stator and turbulator
from Marlin Engineering
8Federal AviationAdministration
NexGen Fire Test Burner UpdateIAMFTWG, Köln, Germany
Materials Tested on Picture Frame:
TexTech Industries Polyacrylonitrile
19186-8579R: 9 oz/yd2
9348-8611R: 16 oz/yd2
9Federal AviationAdministration
NexGen Fire Test Burner UpdateIAMFTWG, Köln, Germany
Measured Burnthrough TimesAverage of 4 Tests
258.5
0
199.2
524
7.25
185.5
0
0.00
50.00
100.00
150.00
200.00
250.00
300.00
9348-8611 19186-8579
Material ID
Bu
rnth
rou
gh
Tim
e, s
ec.
FAATC NEXGEN
ME NEXGEN
10Federal AviationAdministration
NexGen Fire Test Burner UpdateIAMFTWG, Köln, Germany
% Standard DeviationAverage of 4 Tests
0.92
2.88
1.56
4.05
0.00
1.00
2.00
3.00
4.00
5.00
9348-8611 19186-8579
Material ID
% S
tan
dar
d D
evia
tio
n
FAATC NEXGEN
ME NEXGEN
11Federal AviationAdministration
NexGen Fire Test Burner UpdateIAMFTWG, Köln, Germany
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 ME burner can be considered an acceptable NexGen burner for certification testing
12Federal AviationAdministration
NexGen Fire Test Burner UpdateIAMFTWG, Köln, Germany
• CNC-machined precision stators do not fit rolled tubing
• Flexible Cylinder Hone – McMaster-Carr p/n 4424A38– Used to smooth out inner walls of draft tube for better fit
13Federal AviationAdministration
NexGen Fire Test Burner UpdateIAMFTWG, Köln, Germany
EnclosureAutomated Traverse
Laser Head
PC with acquisition and analysis software
Camera
Particle Seeder
FAA Flow Visualization Laboratory
Camera
Light Sheet Optics
Jet Nozzle
14Federal AviationAdministration
NexGen Fire Test Burner UpdateIAMFTWG, Köln, Germany
Field of View
Camera Light Sheet Optics
Jet Nozzle
16Federal AviationAdministration
NexGen Fire Test Burner UpdateIAMFTWG, Köln, Germany
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
17Federal AviationAdministration
NexGen Fire Test Burner UpdateIAMFTWG, Köln, Germany
Questions, Comments, Concerns?
Contact:
Robert Ochs
DOT/FAA Tech Center
BLDG 287
Atlantic City Int’l Airport
NJ 08405
1 (609) 485 4651