PROPOSED BURNTHROUGH TEST METHOD CALIBRATION GUIDELINES

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PROPOSED BURNTHROUGH TEST METHOD CALIBRATION
GUIDELINES
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Objective of Testing

• Establish Similar Calibration Procedure

• Produce Similar Exposure From Burner

• Achieve Similar Test Results

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Factors That Can Influence Calibration

• Air Intake Velocity

• Air Intake Temperature

• Fuel Flowrate

• Fuel Temperature

• Instrumentation (type/size of thermocouple,
  calorimeter type)

• Other Adjustments (position of igniters, static
  disc, tabs)

• Environmental Conditions (relative humidity,
  barometric pressure)

• Fuel Type (Jet A, Diesel, Fuel Oil)

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Individual Calibration Rigs
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Protective Heat Shield for Burner Components
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Protective Heat Shield for Burner Components
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Conditioned Intake Air
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Conditioned Intake Air
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Intake Airbox
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Intake Airbox Mounted to Burner
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Fuel Temperature
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Intake Airbox Holding Air Velocity Meter
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Measurement of Intake Air and Fuel Temperature
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Temperature Rake Using 1/8 Closed Bead
Thermocouples
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Factory Mounted Static Disc
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Static Disc Mounted to Igniter Assembly
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Temperature Profile Bias
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Use of Deflection Tabs at Draft Tube End
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Effect of Tab Positioning on Temperature
Air Velocity 2000 ft/min Igniters _at_
600 Average Temp 1912oF Result Low on ends,
too hot in middle
Air Velocity 2000 ft/min Igniters _at_
600 Average Temp 1927oF Result Too hot in
middle
Air Velocity 2000 ft/min Igniters _at_
600 Average Temp 1890oF Result Low on ends,
too hot in middle
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Effect of Tab Positioning on Temperature
Air Velocity 2000 ft/min Igniters _at_
600 Average Temp 1957oF Result Low on ends,
too hot in middle
Air Velocity 1900 ft/min Igniters _at_
600 Average Temp 1951oF Result Low on ends,
too hot in middle
Air Velocity 2000 ft/min Igniters _at_
900 Average Temp 1860oF Result All
temperatures in range
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Location of Flame Enhancement Tab
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Day 1 Temperature Calibration _at_ Various Air
Velocity Settings
Air Velocity 1900 ft/min Igniters _at_
900 Average Temp 1846oF Result All
temperatures in range
Air Velocity 2000 ft/min Igniters _at_
900 Average Temp 1860oF Result All
temperatures in range
Air Velocity 2100 ft/min Igniters _at_
900 Average Temp 1882oF Result All
temperatures in range
Air Velocity 2200 ft/min Igniters _at_
900 Average Temp 1896oF Result All
temperatures in range
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Day 2 Temperature Calibration _at_ Various Air
Velocity Settings
Air Velocity 2000 ft/min Igniters _at_
900 Average Temp 1826oF Result All
temperatures in range
Air Velocity 2100 ft/min Igniters _at_
900 Average Temp 1832oF Result All
temperatures in range
Air Velocity 2200 ft/min Igniters _at_
900 Average Temp 1864oF Result All
temperatures in range
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Day 3 Temperature Calibration _at_ Various Air
Velocity Settings
Air Velocity 1900 ft/min Igniters _at_
900 Average Temp 1863oF Result All
temperatures in range
Air Velocity 2000 ft/min Igniters _at_
900 Average Temp 1887oF Result All
temperatures in range
Air Velocity 2100 ft/min Igniters _at_
900 Average Temp 1913oF Result Middle
temperatures slightly high
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Day 1 Heat Flux Calibration _at_ Various Air
Velocity Settings
Date 11/17/99
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Day 2 Heat Flux Calibration _at_ Various Air
Velocity Settings
Date 11/18/99
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Day 3 Heat Flux Calibration _at_ Various Air
Velocity Settings
Date 11/19/99
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Date 11/23/99
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Date 11/24/99
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Latest Calibration Procedure
Adjust Fuel Flowrate to 6.0 gal/hr
Adjust Burner Intake Air Velocity to 2200 ft/min
Temperature (1850oF /- 100oF)

• After 2-minute warm-up, swing burner into
  position,
• allow 1 minute stabilization,
• take reading for 30 seconds (once per second) and
  average,
• swing burner away from flame

Heat Flux (15.2 Btu/ft2 sec /- 0.8 Btu/ft2 sec)

• After 2-minute warm-up, swing burner into
  position,
• allow 1 minute stabilization,
• take reading for 30 seconds (once per second) and
  average,
• swing burner away from flame

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Calibration Tests Using Aluminum Skin
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Round Robin Burnthrough TestingMaterial Selection

• Quick-Failing Material (lt 1 minute)

• Long Duration Passing Material (gt 5 minutes)

• 1-2 Minute Material Combination

• 2-3 Minute Material Combination

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Round Robin Burnthrough Testing
Purpose
To identify problems encountered during
calibration of test equipment to ensure
similarity between labs
To prove similarity of test equipment through
testing of identical samples
Cataloguing Method for Identifying Materials
Ins Thickness (in) - Ins Density (lb/ft3) - Ins
Type - Add Barrier - Film - Weight Class
(Thickness)
FGFiberglass OPFOxidized Polyacrylonitrile
Fiber PANPolyacrylonitrile Fiber RPIRigid
Polyimide Foam
NEXNextel Ceramic Paper FOPFelted
OPF NQZNeedled Quartz CFSCarbon Fiber Skrim
600.60 420.42 340.34
PET1class 1 polyethylene terepthalate PVF2class
2 polyvinyl fluoride PIpolyimide FCfluoropolymer
composite
Example 2-42-FG-NEX-PET-1
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Burnthrough Round Robin Test Results (Imaginary)
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Burnthrough Test Method Round Robin Task
GroupTest Facilities
Material Suppliers

• FAATC - Tim Marker
• CEAT - Anne Mansuet
• Darchem Flare - Darren Dodd
• CTA - Anna Villate
• Boeing - Hank Lutz
• Daimler Chrysler - Bernd Menken
• Johns Manville - Becky Wulliman
• 3M - Tom Tompkins
• Mexmil - Dave Indyke
• Accufleet - Jim Davis
• Akro Fireguard - George Danker
• International Aero - John Brooks
• No Fire - Sam Gottfried

• Orcon - Sherm Smith
• 3M - Tom Tompkins
• Johns Manville - Becky Wulliman
• Mexmil - Dave Indyke
• Osaka Gas - Yo Ishikawa
• Inspec Foams - Dan Trahan
• Schneller - Dale Onderak
• Facile - Paul Harencak
• Lamart - Dave Shields
• Jeheir - Jacques Maillard

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