Presented to: International Aircraft Materials Fire

Test Working Group Meeting

By: Steven Rehn

Date: 06/03/2015

Federal Aviation Administration

Radiant Panel

Update

2 Radiant Panel Update 06/03/2015 Federal Aviation

Administration

Since the February Meeting

• Sent out new survey to get more accurate

dimensions for the workbook chapter

• Training Video

• Workbook Changes

• Round Robin

3 Radiant Panel Update 06/03/2015 Federal Aviation

Administration

Survey Results

• Simple survey to get the dimensions of

every lab’s radiant panel in order to make

the workbook as accurate as possible

• 12 Responses + FAA’s data

• Plus 6 (incomplete) responses from last

survey

• Dimension data from 19 labs

4 Radiant Panel Update 06/03/2015 Federal Aviation

Administration

Survey Results

Length: 82.4% within tolerance

Average = 55.1” Width: 88.2% within tolerance

Average = 19.7”

Height: 76.5%

within tolerance

Average = 28.9”

5 Radiant Panel Update 06/03/2015 Federal Aviation

Administration

52

53

54

55

56

57

58

0 5 10 15 20

Ch

amb

er L

engt

h (

inch

es)

Number

Chamber Length: 55±1"

Data

Average

Tolerance

17

18

19

20

21

22

23

0 5 10 15 20

Ch

amb

er W

idth

(in

ches

)

Number

Chamber Width: 20±1"

Data

Average

Tolerance

25

26

27

28

29

30

31

32

33

0 5 10 15 20

Ch

amb

er H

eigh

t (i

nch

es)

Number

Chamber Height: 29±1"

Data

Average

Tolerance

6 Radiant Panel Update 06/03/2015 Federal Aviation

Administration

Survey Results

4.37, 13.11

12

12.5

13

13.5

14

14.5

3.9 4 4.1 4.2 4.3 4.4 4.5 4.6

Ch

imn

ey

He

igh

t (i

nch

es)

Chimney Width (inches)

Chimney Width and Height

Data

Average

Tolerance

New Tolerance7 Points

• Change chimney height tolerance from 13±0.25” to 13.25±0.25”

7 Radiant Panel Update 06/03/2015 Federal Aviation

Administration

Survey Results

4.43, 0.03

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

0.4

0.5

3 3.5 4 4.5 5 5.5 6

Dis

tan

ce o

ff C

en

terl

ine

(in

che

s)

Distance from Inside Right Edge of Drawer (inches)

Zero Position

Data

Average

Tolerance

New Tolerance

• Change zero position tolerance from 4.375±0.25” to 4.5±0.25”

8 Radiant Panel Update 06/03/2015 Federal Aviation

Administration

Drawer Change Old Drawer

New Drawer

• Bigger drawer almost fills out entire width of the chamber

• Doesn’t allow as much air-flow around drawer while testing

9 Radiant Panel Update 06/03/2015 Federal Aviation

Administration

Survey Results

45.30, 13.24

11

11.5

12

12.5

13

13.5

14

14.5

15

43 44 45 46 47 48 49 50 51

Dra

we

r W

idth

(in

che

s)

Drawer Length (inches)

Drawer Length and Width

Data

Average

Tolerance

New Tolerace

10 Radiant Panel Update 06/03/2015 Federal Aviation

Administration

Workbook Change

• Original ASTM floor tester that this test was

based on specified an open area around the

drawer of 356 to 500 in.2

• Specifying an open area for this test would

solve air-flow problems without requiring

every lab to have the exact same drawer

size

11 Radiant Panel Update 06/03/2015 Federal Aviation

Administration

Survey Results

1.01, 1.59

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

0 0.5 1 1.5 2 2.5 3 3.5 4

Left

Sid

e G

ap (

inch

es)

Right Side Gap (inches)

Air Gaps Around Drawer

Data

Average

4 Points

Average opening behind drawer = 1.9375” (2 labs)

Total average open area = 145 in.2

12 Radiant Panel Update 06/03/2015 Federal Aviation

Administration

Survey Results

-0.35

-0.15

0.05

0.25

0.45

0.65

0.85

1.05

0 2 4 6 8 10 12 14 16 18 20

Dis

tan

ce b

elo

w 2

nd

Em

itte

r St

rip

Se

am (

inch

es)

Number

Radiant Panel Position: 0.25±0.125"

Data

Average

Tolerance

13 Radiant Panel Update 06/03/2015 Federal Aviation

Administration

Survey Results

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

3

3.5

4

0 2 4 6 8 10 12 14 16

Dis

tan

ce B

elo

w 4

th E

mit

ter

Stri

p S

eam

(in

che

s)

Number

Thermocouple Position: 0.5±0.125"

Data

Average

Tolerance

14 Radiant Panel Update 06/03/2015 Federal Aviation

Administration

Training Video

• Purpose of the video is to help make the

test procedure more consistent across all

labs and to help new labs

• 2nd draft has been made

• Re-shoots were delayed because the video

production group was booked solid until

mid-June

• Video will be sent out or posted online when

completed

15 Radiant Panel Update 06/03/2015 Federal Aviation

Administration

Round Robin

• Test will include all calibration data and 12

samples per lab

• Most of the test samples have been

produced

• We will start sending out samples after the

meeting

16 Radiant Panel Update 06/03/2015 Federal Aviation

Administration

Questions?