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

6.7

Installation guidelines for reticulated foam in aircraft fuel tanks and dry bays. ........... 39

6.8

Service life. .................................................................................................................. 39

6.9

Fabricated parts........................................................................................................... 39

6.10

Air deionizer. ................................................................................................................ 39

6.11

Marker identifier. .......................................................................................................... 39

6.12

Product identification label card................................................................................... 40

6.13

Subject term (key word) listing. ................................................................................... 40

6.14

Changes from previous issues. ................................................................................... 40

APPENDICES

A.1.

SCOPE ........................................................................................................................ 41

A.1.1

Scope........................................................................................................................... 41

A.2.

APPLICABLE DOCUMENTS....................................................................................... 41

A.3.

TEST EQUIPMENT AND MATERIALS ....................................................................... 42

A.4.

TEST PARAMETERS AND DETAILS ......................................................................... 42

A.5.

TEST FOAM TYPES AND CONFIGURATIONS ......................................................... 43

A.6.

TEST DATA AND DOCUMENTATION ....................................................................... 43

FIGURES

FIGURE 1. Typical porosity (air flow) test apparatus................................................................................. 16

FIGURE 2. Porosity curve.......................................................................................................................... 17

FIGURE 3. Flame arrestor apparatus ........................................................................................................ 26

FIGURE 4. Dimensional and electrical diagrams for measuring volume resistivity of conductive materials.

.................................................................................................................................................................... 30

FIGURE 5. Electromechanical test set-up. ................................................................................................ 33

FIGURE A-1.

Fuel impingement test set-up schematic. ............................................................................ 44

FIGURE A-2.

Schematic of two different impingement scenarios. ............................................................ 45

FIGURE A-3.

Tank lid for the uppermost tank of the fuel impingement test rig. ....................................... 46

FIGURE A-4.

Fuel impingement summary test data sheet. ...................................................................... 47

FIGURE A-5.

Fuel impingement test data sheet. ...................................................................................... 48

TABLES

TABLE I. Physical properties and characteristics. ....................................................................................... 7

Concluding Material

............................................................................................................................. 49