NexGen Fire Test Burner Update

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Presentation transcript:

NexGen Fire Test Burner Update

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

Burner Components Draft Tube Back Section Burner Cone Fuel Tube Turbulator and Stator

Closer Look at 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

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

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

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

FAA Flow Visualization Laboratory Enclosure Automated Traverse Laser Head PC with acquisition and analysis software Camera Particle Seeder 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

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