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MIL-PRF-87260 Foam Material, Explosion Suppression, Inherently Electrostatically Conductive, For Aircraft Fuel TanksThis document covers the requirements for an electrically conductive open-celled foam material that will be used for explosion suppression in aircraft fuel.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11

MIL-PRF-87260B(USAF)

CONTENTS

PARAGRAPH

PAGE

4.5.18.2

Additional tests............................................................................................................. 25

4.5.18.2.1

Single void ignitions. .................................................................................................... 26

4.5.18.2.2

For Grade II (fine pore material only). ......................................................................... 26

4.5.19

Corrosion and adhesion test........................................................................................ 27

4.5.19.1

Roughness test............................................................................................................ 27

4.5.19.1.1

Surface finish. .............................................................................................................. 27

4.5.19.2

Test report.................................................................................................................... 27

4.5.20

Electrical resistivity permanence. ................................................................................ 28

4.5.20.1

Water immersion.......................................................................................................... 28

4.5.20.1.1

Electrical resistivity specimens. ................................................................................... 28

4.5.21

Fuel compatibility test. ................................................................................................. 28

4.5.22

Electrical resistivity test................................................................................................ 29

4.5.22.1

Test equipment and preconditioning environment. ..................................................... 29

4.5.22.2

Test procedure and calculation. .................................................................................. 29

4.5.22.3

Correlation test data requirements. ............................................................................. 31

4.5.23

Electrostatic fuel impingement test.............................................................................. 31

4.5.23.1

Test data requirements................................................................................................ 32

4.5.24

Infrared spectrum analysis test.................................................................................... 32

4.5.25

Electrochemical corrosion test..................................................................................... 32

4.5.25.1

Testing requirements. .................................................................................................. 32

4.5.25.2

Test metal panels. ....................................................................................................... 34

4.5.25.3

Test exposure. ............................................................................................................. 34

4.5.25.4

Test intervals................................................................................................................ 34

4.5.25.5

Qualification report....................................................................................................... 34

4.5.26

Marker legibility test. .................................................................................................... 34

4.5.26.1

Test report.................................................................................................................... 35

4.5.27

Electrostatic charge dissipation test. ........................................................................... 35

4.5.27.1

Test equipment. ........................................................................................................... 35

4.5.27.2

Specimen preparation, conditioning and mounting. .................................................... 35

4.5.27.3

Specimen test procedure............................................................................................. 35

4.5.27.4

Report. ......................................................................................................................... 36

4.5.28

Aircraft service test evaluation..................................................................................... 36

4.6

Inspection of preparation for delivery. ......................................................................... 36

PACKAGING................................................................................................................ 37

5.1

Packaging. ................................................................................................................... 37

NOTES......................................................................................................................... 37

6.1

Intended use. ............................................................................................................... 37

6.2

Acquisition requirements. ............................................................................................ 37

6.3

Qualification. ................................................................................................................ 37

6.3.1

Qualifying activity. ........................................................................................................ 38

6.3.2

Qualification tests. ....................................................................................................... 38

6.4

Supersession data. ...................................................................................................... 38

6.5

Definitions. ................................................................................................................... 38

6.5.1

Run of material............................................................................................................. 38

6.5.2

Test section width. ....................................................................................................... 38

6.5.3

Direction of rise. ........................................................................................................... 38

6.5.4

Machine direction......................................................................................................... 38

6.5.5

Lot. ............................................................................................................................... 39

6.6

Classes. ....................................................................................................................... 39