1、 INCH-POUND MIL-PRF-87260B(USAF) 2 November 2006 SUPERSEDING MIL-PRF-87260A(USAF) 13 February 1998 PERFORMANCE SPECIFICATION FOAM MATERIAL, EXPLOSION SUPPRESSION, INHERENTLY ELECTROSTATICALLY CONDUCTIVE, FOR AIRCRAFT FUEL TANKS AMSC: N/A FSC: 9330 DISTRIBUTION STATEMENT A. Approved for public releas
2、e; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87260B(USAF) FOREWORD This specification is approved for use by the Department of the Air Force and is available for use by all Departments and Agencies of the Depa
3、rtment of Defense. Comments, suggestions, or questions on this document should be addressed to ASC/ENOI, 2530 Loop Road West, Wright-Patterson AFB OH 45433-7101 or emailed to Engineering.Standardswpafb.af.mil. Since contact information can change, you may want to verify the currency of this address
4、information using the ASSIST Online database at http:/assist.daps.dla.mil/. ii Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87260B(USAF) CONTENTS PARAGRAPH PAGE 1. SCOPE 1 1.1 Scope. 1 1.2 Classification 1 2. APPLICABLE DOCUMENTS. 1 2.1 Ge
5、neral. . 1 2.2 Government documents. . 1 2.2.1 Specifications, standards, and handbooks 1 2.2.2 Other Government documents, drawings, and publications. 2 2.3 Non-Government publications. 2 2.4 Order of precedence 3 3. REQUIREMENTS 4 3.1 Qualification. 4 3.1.1 Re-qualification. . 4 3.2 Materials. . 4
6、 3.2.1 Product toxicological data and disposal. . 4 3.2.2 Human exposure toxicology. . 4 3.2.3 Tracer elements. 4 3.2.4 Manufacturer internal specification and production quality control documents. 5 3.3 Age.5 3.3.1 Storage life. 5 3.3.2 Storage limit. 5 3.4 Coloring pigments 5 3.5 Marker legibility
7、 5 3.6 Physical properties and characteristics. 6 3.7 Performance requirements. . 6 3.7.1 Fuel immersion. . 6 3.7.2 Hydrolytic stability. . 6 3.7.3 Explosion suppression and flame arrestor characteristics 6 3.7.4 Corrosion and adhesion. 8 3.7.5 Electrical resistivity permanence. 8 3.7.6 Fuel compati
8、bility. 8 3.7.7 Electrical resistivity and electrostatic fuel impingement test 8 3.7.8 Infrared spectrum analysis. 9 3.7.9 Static charge dissipation test. 9 3.7.10 Electrochemical corrosion. 9 3.7.11 Aircraft service test. . 9 3.7.12 Manufacturing demonstration details. 9 3.8 Dimensions and toleranc
9、es. 9 3.8.1 Optional bun sizes. 10 3.9 Final product identification. 10 3.10 Marking. . 10 3.10.1 Additional marking. 10 4. VERIFICATION 11 4.1 Classification of tests. 11 4.2 Test conditions. 11 4.2.1 Temperature and humidity. 11 4.2.2 Test fluids. 11 4.2.3 Basic property testing. . 11 4.2.4 Specim
10、en cutting. 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87260B(USAF) CONTENTS PARAGRAPH PAGE 4.3 Qualification testing. 11 4.3.1 Test sample(s). 11 4.3.1.1 Test specimens 12 4.3.1.1.1 Test section location 12 4.3.1.1.2 Quantity of spec
11、imens. 12 4.3.2 Test report, disposition of test specimens, and data for the qualifying activity. 12 4.3.3 Qualification approval. . 13 4.3.4 Qualification tests. . 13 4.4 Conformance inspections. . 13 4.4.1 Production tests. 13 4.4.2 Lot tests. 14 4.4.2.1 Rejection and retest. 14 4.4.3 Process cont
12、rol tests. 14 4.4.3.1 Rejection and test. . 15 4.5 Test methods. 15 4.5.1 Examination of product. . 15 4.5.2 Color test 15 4.5.3 Density test. . 15 4.5.3.1 Density uniformity. . 15 4.5.4 Porosity (air pressure drop) test. . 15 4.5.5 Tensile strength and ultimate elongation tests. . 18 4.5.6 Tear res
13、istance test. 18 4.5.7 Constant deflection compression set test 18 4.5.8 Compression load deflection (CLD) test 18 4.5.9 Fuel displacement test. 19 4.5.9.1 Theoretical fuel displacement 19 4.5.10 Fuel and water retention test. 19 4.5.10.1 Fuel retention tests. . 19 4.5.10.2 Water retention test. 20
14、4.5.10.3 Test data and sample requirements 20 4.5.11 Extractable material test. . 21 4.5.12 Volume swell test. 21 4.5.13 Low temperature flexibility test. . 21 4.5.14 Entrained solid contamination tests. 22 4.5.15 Steam autoclave exposure test. 22 4.5.16 Fluid immersion tests. 22 4.5.16.1 Tension te
15、sts 22 4.5.16.2 Electrical resistivity test 23 4.5.16.3 Immersion tests. 23 4.5.17 Hydrolytic stability tests. 23 4.5.17.1 Humidity exposure. 23 4.5.17.1.1 Tension tests 23 4.5.17.2 Water immersion 24 4.5.17.2.1 Testing frequency. . 24 4.5.17.3 Dry heat. 24 4.5.17.3.1 Testing frequency. . 24 4.5.17.
16、4 Data requirements. 24 4.5.18 Explosion suppression and flame arrestor characteristics 24 4.5.18.1 Material sizing 25 iv Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87260B(USAF) CONTENTS PARAGRAPH PAGE 4.5.18.2 Additional tests. 25 4.5.1
17、8.2.1 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 Electrica
18、l 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 t
19、est 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 leg
20、ibility 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
21、 of preparation for delivery. . 36 5. PACKAGING 37 5.1 Packaging. . 37 6. 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.
22、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 v Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87260B(USAF) CONTENTS PARAGRAPH PAGE 6.7 Installation guidelines for retic
23、ulated 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
24、 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 curve17 FIG
25、URE 3. Flame arrestor apparatus26 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.4
26、5 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 characteristics7 Concluding Material . 49vi Provided by IHSNot for Res
27、aleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87260B(USAF) 1. SCOPE 1.1 Scope. This document covers the requirements for an electrically conductive open-celled foam material that will be used for explosion suppression in aircraft fuel. 1.2 Classification. The conduc
28、tive explosion suppression material (ESM) will be of the following classes and grades (see 6.6): Class 1 ESM to be used for single point and over-wing refueling throughout the temperature range of +10 to +160F Grade I Coarse pore Grade II Fine pore Class 2 ESM to be used for single point and over-wi
29、ng refueling throughout the temperature range of -25 to +160F Grade I Coarse pore Grade II Fine pore 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents cited in other sections o
30、f this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in Sections 3, 4, or 5 of this specification, whethe
31、r or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the sol
32、icitation or contract. FEDERAL SPECIFICATIONS A-A-208 Ink, Marking, Stencil, Opaque (Porous and Non-Porous Surfaces) A-A-3174 Plastic Sheet, Polyolefin 1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87260B(USAF) DEPARTMENT OF DEFENSE SPECI
33、FICATIONS MIL-DTL-5624 Turbine Fuel, Aviation, Grades JP-4 AND JP-5 MIL-DTL-83054 Baffle and Inerting Material, Aircraft Fuel Tank MIL-DTL-83133 Turbine Fuels, Aviation, Kerosene Types, NATO F-34(JP-8), NATO F-35, AND JP-8 + 100 MIL-PRF-87937 Cleaning Compound, Aerospace Equipment DEPARTMENT OF DEFE
34、NSE STANDARDS MIL-STD-129 Military Marking for Shipment and Storage DEPARTMENT OF DEFENSE HANDBOOKS MIL-HDBK-831 Preparation of Test Reports (Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue,
35、Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are tho
36、se cited in the solicitation or contract. AIR FORCE ENGINEERING AND SERVICE CENTER TEST REPORTS ESC-TR-84-63 Effective Disposal of Fuel Cell Polyurethane Foam (Copies of this report are available online at http:/www.ntis.gov or from the National Technical Information Service (NTIS), 5285 Port Royal
37、Road, Springfield VA 22161.) AIR FORCE TECHNICAL ORDER T.O. 42B-1-1 Quality Control of Fuels and Lubricants (Copies of Air Force Technical Orders are available through your contracting officer or from Oklahoma City Air Logistics Center (OC-ALC/LGLU), Tinker Air Force Base, OK 73145-9147.) 2.3 Non-Go
38、vernment publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without licens
39、e from IHS-,-,-MIL-PRF-87260B(USAF) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM-A967 Drive-Studded, Accessory, (254) 10.000 BC Round, Design Standard For ASTM-B209 Aluminum and Aluminum-Alloy Sheet and Plate ASTM D257 Standard Test Methods for DC Resistance or Conductance of Insulating Ma
40、terials ASTM D1655 Standard Specification for Aviation Turbine Fuels ASTM D2276 Standard Test Method for Particulate Contaminant in Aviation Fuel by Line Sampling ASTM D3574 Standard Test Methods for Flexible Cellular Materials Slab, Bonded, and Molded Urethane Foams ASTM F1110 Standard Test Method
41、for Sandwich Corrosion Test (Copies of ASTMs are available from http:/www.astm.org or from the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. SAE INTERNATIONAL (SAE) SAE-AMS-QQ-P-35 Passivation Treatments for Corrosion-Resistant Steel SAE-AMS-QQ-
42、A-250 Aluminum and Aluminum Alloy, Plate and Sheet General Specification for SAE AMS-2629 Fluid, Jet Reference SAE AIR-4170 Reticulated Polyurethane Foam Explosion Suppression Material for Fuel Systems and Dry Bays (Copies of SAEs are available from http:/www.sae.org or from the SAE World Headquarte
43、rs, 400 Commonwealth Drive, Warrendale, PA 15096-0001.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unl
44、ess a specific exemption has been obtained. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87260B(USAF) 3. REQUIREMENTS 3.1 Qualification. Material furnished under this specification shall be products that are authorized by the qualifying
45、activity for listing on the applicable qualified products list before contract award (see 4.3 and 6.3). 3.1.1 Re-qualification. Before any change is made in the quality, composition, source of ingredients, or source of supply of the final product, the manufacturer must contact the qualifying activit
46、y to determine if re-qualification or partial re-qualification is required (see 6.3.1). 3.2 Materials. The raw materials used in processing the material shall be of the highest quality, and standards for commercially available products of this type shall be of the same formulation as that used in th
47、e qualification test sample. The end product shall be flexible urethane foam which is suitable for use in aircraft fuel tanks. The final product shall be a material that is inherently electrostatically conductive. It shall be compatible with all materials found inside aircraft fuel tanks and systems
48、. 3.2.1 Product toxicological data and disposal. Product toxicological data relating to the kit processing and end use, particularly by hot wire thermal decomposition, shall be submitted in the qualification test report for review by an appropriate military medical authority who will determine if an
49、y use restrictions exist relative to the safety of personnel. In addition, available data relating to possible methods of disposal for the foam material shall be provided. This includes both new material and material that has been exposed to fuel in an aircraft fuel tank. For additional guidelines on the disposal of
