Recent Simulator Activity

1
Recent Simulator Activity

• Baseline Testing
• Fire testing performed during the first week of
  May 2000
• Agent testing performed during the third and
  fourth weeks of May2000
• Results/General simulation
• The air flow passing through the test section no
  longer attains the 400F MPSE criteria
• During past core heating trials, fuel leaked
  through openings in the lower portions of the
  core to the test bay floor due to excessively
  rich conditions in the core volume
• The core heating burner was nozzled back from 6
  gph to 2 gph to relieve the fuel leak
• Air flow heating to specific temperature is
  difficult due to the simplicity of the simulator
• Results/fire testing
• Used a heat flux transducer in a reference
  location within the spray fire zone to bench mark
  fire intensity and behavior NOTE this is
  intended for in-house reference only
• Determined existing fuel nozzle array is
  insufficient (fuel not atomizing acceptably)
• A fire is occurring outside the annular fire zone
  within the core volume
• Electrical feeds to both hot plates damaged and
  require repair
• Results/agent testing
• Difficulty attaining low temperature agent
  storage profile
• Agent pressurization insufficient _at_70F, 360 psig
  N2 top off
• Agent pressurization sufficient _at_70F, 600 psig
  N2 top off

WJ Hughes Technical Center Atlantic City
International Airport, NJ 08405 USA
Contact Douglas Ingerson tel [phone]
2
Recent Simulator Activity

• Short Term Actions
• Install process controller for the in-line duct
  heaters (week of 22May)
• Characterize the new nozzle arrays for spray fire
  scenario (week of 29May)
• Modify firex to attain colder agent storage
  temperatures (week of 29May)
• Repair/fire-harden electrical feeds and correct
  fuel leak problems around the hot plates
  (2-6June)

WJ Hughes Technical Center Atlantic City
International Airport, NJ 08405 USA
Contact Douglas Ingerson tel [phone]
3
Recent Simulator Activity

• Test Data Plots
• 6 tests are provided for viewing
• simulator settings and calculations for each test
  are provided on the next slide
• a table deciphering the plot legend text
  references is provided
• plot break down
• article test plots 411.21 and 525.12 are shown to
  illustrate air flow heating ability and control
  as of now
• article test plots 502.11 and 503.11 are shown to
  illustrate the differences in fire behavior
  between conditions of ambient air/fuel and hot
  air/fuel
• article test plots 518.10 and 518.11 illustrate
  the generic response of the simulator environment
  during an agent release
• gas distribution plots 518.10 and 518.11
  illustrate the distribution in the simulator
• Most of this information is "gee-whiz"
• The information is primarily the result of
  learning the simulator behavior/characteristics
  and bugging it out

WJ Hughes Technical Center Atlantic City
International Airport, NJ 08405 USA
Contact Douglas Ingerson tel [phone]
4
Recent Simulator Activity
WJ Hughes Technical Center Atlantic City
International Airport, NJ 08405 USA
Contact Douglas Ingerson tel [phone]
5
Recent Simulator Activity
WJ Hughes Technical Center Atlantic City
International Airport, NJ 08405 USA
Contact Douglas Ingerson tel [phone]
6
Recent Simulator Activity
Simulator maximum heating ability _at_ 84 in2 open
inlet
WJ Hughes Technical Center Atlantic City
International Airport, NJ 08405 USA
Contact Douglas Ingerson tel [phone]
7
Recent Simulator Activity
Simulator air stream heating, via process control
(84 in2)
WJ Hughes Technical Center Atlantic City
International Airport, NJ 08405 USA
Contact Douglas Ingerson tel [phone]
8
Recent Simulator Activity
Fire behavior from spray nozzle array
WJ Hughes Technical Center Atlantic City
International Airport, NJ 08405 USA
Contact Douglas Ingerson tel [phone]
9
Recent Simulator Activity
Fire behavior from spray nozzle array
WJ Hughes Technical Center Atlantic City
International Airport, NJ 08405 USA
Contact Douglas Ingerson tel [phone]
10
Recent Simulator Activity
Typical simulator response for agent discharge
WJ Hughes Technical Center Atlantic City
International Airport, NJ 08405 USA
Contact Douglas Ingerson tel [phone]
11
Recent Simulator Activity
Typical simulator response for agent discharge
WJ Hughes Technical Center Atlantic City
International Airport, NJ 08405 USA
Contact Douglas Ingerson tel [phone]
12
Recent Simulator Activity

• Channel Allocations for the Halonyzer
• Forward Ring
• A 1200 ch 11
• B 300 ch 9
• C 600 ch 8
• D 900 ch 4
• Mid Ring
• E 130 ch 1
• F 430 ch 7
• G 730 ch 5
• H 1130 ch 2
• Aft Ring
• I 1200 ch 10
• J 300 ch 12
• K 600 ch 6
• L 900 ch 3

WJ Hughes Technical Center Atlantic City
International Airport, NJ 08405 USA
Contact Douglas Ingerson tel [phone]
13
Recent Simulator Activity
Agent discharge, HFC-125
WJ Hughes Technical Center Atlantic City
International Airport, NJ 08405 USA
Contact Douglas Ingerson tel [phone]
14
Recent Simulator Activity
Agent discharge, HFC-125
WJ Hughes Technical Center Atlantic City
International Airport, NJ 08405 USA
Contact Douglas Ingerson tel [phone]
15
Recent Simulator Activity

• Comments
• still bugging out systemic difficulties...
• fuel nozzle arrays for the spray fire scenario
  have been modified and characterized regarding
  flow/pressure curves fire test behavior requires
  evaluation
• air flow heating
• the in-line duct heaters are now controlled with
  a temperature process controller to provide
  tighter air flow heating control
• the core is plumbed for 2 burners only one is
  currently used, the second can be attached at a
  later time, if needed
• to rectify agent super-cooling difficulties
• have spoken with the testing contractor at WPAFB
  to learn from their experiences
• have additional simple modifications planned for
  the firex
• Summary/Observations
• comparison of flux plots illustrates difference
  in fire zone behavior with respect to air
  temperature (heat sink effects)
• agent releases performed with HFC-125 (simulation
  protocol) of 5 MPSE phase I attempts, 2 were
  considered reviewable (agent temp for HFC-125 was
  -42 and -45F gt representative of Halon 1301 _at_
  -65F)
• for the current simulator configuration, an agent
  weight for HFC-125 is somewhere between 3.50 and
  3.75 lbm (Halon 1301 predicted to be 100/77 times
  that mass to achieve an MPSE-acceptable
  distribution profile)

WJ Hughes Technical Center Atlantic City
International Airport, NJ 08405 USA
Contact Douglas Ingerson tel [phone]