NexGen Fire Test Burner Update

Presented to: IAMFTWG, Renton, WA

By: Robert I. Ochs

Date: Thursday, March 4, 2010

Federal AviationAdministrationNexGen Fire Test

Burner Update

2Federal AviationAdministration

NexGen Burner UpdateMarch 4, 2010, Renton, WA

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



Burner ComponentsDraft Tube

Burner Cone

Back Section

Fuel Tube

Turbulator and Stator



Closer Look at Back Section

Back Section



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





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



Materials Tested on Picture Frame:

TexTech Industries Polyacrylonitrile

19186-8579R: 9 oz/yd2

9348-8611R: 16 oz/yd2



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



% 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



Measured Flame TemperatureEffect of Fuel Nozzle and Cone

1700

1750

1800

1850

1900

1950

2000

2050

2100

TC1 TC2 TC3 TC4 TC5 TC6 TC7 TAVG

Thermocouple

Tem

per

atu

re,

°F

ME NG

ME w/FAA NOZ

ME w/FAA NOZ + CONE



Measured Burnthrough TimesEffect of Nozzle and Cone

247.2

5

185.5

0

258.5

0

210.5

0

273.5

0

211.5

025

8.50

199.2

5

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.

ME NEXGEN

ME w/ FAA Noz

ME w/ FAA Noz + Cone

FAATC NEXGEN







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



EnclosureAutomated Traverse

Laser Head

PC with acquisition and analysis software

Camera

Particle Seeder

FAA Flow Visualization Laboratory

Camera

Light Sheet Optics

Jet Nozzle



Field of View

Camera Light Sheet Optics

Jet Nozzle





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



Questions, Comments, Concerns?

Contact:

Robert Ochs

DOT/FAA Tech Center

BLDG 287

Atlantic City Int’l Airport

NJ 08405

[email protected]

1 (609) 485 4651

NexGen Fire Test Burner Update

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