Ground Based Fuel Tank Inerting - PowerPoint PPT Presentation

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Ground Based Fuel Tank Inerting

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Focus of the Testing is to Better Quantify the Parameters that Effect the Benefit of GBI ... Stairway. Ground Based NEA. Supply. NEA Hose Reel. Tug. Tow Bar ... – PowerPoint PPT presentation

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Title: Ground Based Fuel Tank Inerting


1
Full Scale GBI Testing with B747 SP
July 17-18, 2001International Aircraft Systems
FireProtection Working GroupWilson, NC
2
Background
  • Focus of the Testing is to Better Quantify the
    Parameters that Effect the Benefit of GBI
  • Wind and Weather
  • Equipment Usage
  • Cross Venting
  • Study Manifold Design
  • Study the Cost and Benefit of Potential OBIGG
    Systems.
  • Platform to Examine Cross Flow Reduction Methods

3
Boeing 747 SP
4
Work Completed
  • Wrote Research Plan and Testing Safety Plan
  • Have a Preliminary Schedule
  • Start Testing 8-6-01
  • Test for 12 Weeks
  • Obtained Aircraft
  • Located Preliminary Parking Spot
  • Have Most Support Equipment Required
  • Began Installing Testing Control Center and
    Instrumentation.
  • CWT has Been Opened and Cleaned and is Ready to
    be Modified

5
Instrumentation Planned
  • Gas Sample Tubing
  • Sample Oxygen at Eight Locations in the CWT
  • Sample THC at Any Two of Those Locations
  • Sample Oxygen in Surge Tanks, Dry Bay
  • Thermocouples
  • 8 in Fuel
  • 8 in Ullage
  • 16 Mounted on Interior Wall Surfaces
  • Plan to Measure Pressure in Tank Bays
  • Record NEA Volume Flow and Oxygen Concentration

6
747 SP Gas Sample Locations
Dry Bay
1
2
3
4
5
6
7
8
7
Potential Instrumentation Improvements
  • Measure NEA Flow and Purity Directly
  • THC Measurements at Surge Tank
  • Wind Speed and Direction
  • ?

8
Pending Work
  • Modify CWT
  • NEA Delivery System
  • Thermocouples
  • Sample Tubing
  • Complete Installation of DAS and Control Room
  • Get NEA Source on Site
  • Do End-to-End Signal Check

9
Full Scale GBI System Diagram
Ground Based NEA Supply
Ground Heat/HVAC
NEA Hose Reel
Movable Stairway
Ground Power
Tow Bar
Tug
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