1、MIL-DTL- 83 054C 20 October 2003 SUPERSEDING 15 August 1973 MIL-B-83054B (USAF) DETAILED SPECIFICATION BAFFLE AND INERTING MATERIAL, AIRCRAFT FUEL TANK 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 Department
2、 of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for a reticulated polyurethane foam for explosion suppression in aircraft fuel tanks and dry bay areas (cavities). 1.2 Classification. The baffle and inerting material is classified as follows: Type I Type II Type III Type I
3、V Type V Orange, 1.8 lbs/ft3, nominal 10 pores per inch, polyester Yellow, 1.3 lblft3, nominal 15 pores per inch, polyester Red, 1.3 lbdft3, nominal 25 pores per inch, polyester Dark Blue, 1.3 lbdft3, nominal 15 pores per inch, polyether Light Blue, 1.3 lbdft3, nominal 25 pores per inch, polyether B
4、eneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: WR-ALCLGECC, 420 Second Street, Suite 100, Robins AFB, GA 31098- 1640 by using the Standardization Document Improvement Proposal (DD Form 1426) app
5、earing at the end of this document or by letter. AMSC NIA FSC 9330 DISTRIBUTION STATEMENT k Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83054C 1.3 Part or Identimg Number (PIN). The
6、PIN is as follows: M83054 - 1 L Type: i - Type i - mge, i .8 iwfi3, nominal io pores per inch polyester 2 - Type II - Yellow, 1.3 lb/ft3, nominal 15 pores per inch, polyester 3 - Type III - Red, 1.3 lbdft3, nominal 25 pores per inch, polyester 4 - Type N - Dark Blue, 1.3 lbdfi3, nominal 15 pores per
7、 inch, polyether 5 - Type V - Light Blue, 1.3 lbdfi3, nominal 25 pores per inch, polyether Specification 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections
8、of this specification or recommended for additional informaton or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that tiiey must meet all specified requirements documents cited in sections 3 and 4 of this specification, whether or
9、not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The foliowing specifications form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defens
10、e Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS DEPARTMENT OF DEFENSE MIL-PRF- 5 606 MIL-DTL- 5624 MIL-PRF-7808 MIL-DTL-27686 Inhibitor, Icing, Fuel System MIL-DTL-83 133 Hydraulic Fluid, Petroleum Base; Aircraft, Missile A
11、nd Ordnance Turbine Fuel, Aviation, Grades JP-4, JP-5, And JP-5LP-8 ST Lubricating Oil, Aircraft Turbine Engine, Synthetic Base Turbine Fuels, Aviation, Kerosene Types, NATO F-34(JP-8), NATO F-35, And JP-8 + 100 (Unless otherwise indicated, copies of the above specifications are available hm the Sta
12、ndarbtion Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 191 1 1-5094.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83054C 2.3 Non-Government publications. The following document(s) form a part of this document t
13、o the extent specified herein. Unless otherwise specified, the issues of the documents which are DoD adopted are those listed in the issue of the DoDISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DoDISS are the issues of the documents cited in th
14、e solicitation (see 6.2). American Society for Testing and Materials (ASTM) ASTM-D2276 ASTM-D3574 ASTM-D47 1 ASTM-D4986 ASTM-D910 Gasolines, Aviation (DOD Adopted) ASTM-G23 Fuel, Aviation, By Line Sampling, Particulate Contaminant In Materials, Flexible Cellular- Slab, Bonded, And Molded Urethane Ru
15、bber Property-Effect Of Liquids OD Adopted) Sandard Test Method For Horizontal Burning Chatacteristics Of (DOD Adopted) Foams (DOD Adopted) Cellular Polymeric Materials Materials, Nonmetallic, Operating Light-Exposure Apparatus (Carbon-Arc Type) With And Without Water For Exposure Of (DOD Adopted) (
16、Application for copies should be addressed to the American Society for Testing and Materials, 19 16 Race Street, Philadelphia PA 19 103 .) Society of Automotive Enginem (SAE) SAE- J1899 Oil, Lubricating, Aircraft Piston Engine (Ashless Dispersant) (DOD Adopted) Metals And Alloys In The Unified Numbe
17、ring System (UNS) (HS- 1086) (DOD Adopted) UNS A97075 Wrought Aluminum Alloy, Heat Treatable (Application for copies should be addressed to the SAE, 400 Commonwealth Drive, Warrendale, PA 19103-1 187.) 3. REQUIREMENTS 3.1 Oualifkation The Baffle and inerting materiai Iumished under this specificatio
18、n shali be products authorized by the quahfjmg activity for listing on the applicable qualified products list before contract award (see 4.1 and 6.3). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL- 83 054C 3.2 Materials. The raw materials
19、 used in processing the baffle and inerting material shali be of the highest quality and standards for commercially available products of this type and shall be of the same formulation as that used in the qualification sample. The end product shall be a flexible urethane foam which is suitable for u
20、se in aircraft fuel tanks. 3.2.1 Thermai decomposition Product toxicological properties relating to thermai decomposition shall be kept to a minimum as to not impose any use restrictions dealing with the safety of personnel. 3.2.2 Tracer element. A tracer element shail be incorporated into the foam
21、formulation of each vendor for identification purposes. The tracer element selected shall be unique to each vendor and shall have a test procedure to identify it. 3.3 and thereafter, 1 day intervals. Types IV and V baffle material shall be exposed for 24 weeks (or faiiure) and testing frequency shal
22、l be at 1 , 2,3,4,5,6, and 8 weeks; and thereafter, 2 week intervals. Tests shall be conducted in loosely capped glass jars using 50 mis of distilled water for each 900 mis of container volume and nine (maximum) tension specimens for each sampling jar. Specimens shall be supported above the water an
23、d the water level maintained throughout the test. A minimum of two specimens for each exposure time shall be tension tested. 4.6.18.2 160F Temperature exposure. The baffle material shali be exposed to 160“ +5“F (71.1“ - +2.8“C) and 95 t5% relative humidity. Types I, II, and I baffle material shall b
24、e exposed for 6 weeks (or failure) and testing frequency shall be 2,3,4,5, and 6 weeks, and thereafter, 1 week intervals until failure. Types IV and V baffle material shall be exposed for 24 weeks (or failure) and testing fi-equency shall be at 4 week intervals. Tests shall be conducted in either a
25、humidity cabinet or loosely capped jars with 50 mls of distilled water for each 900 mls of container volume. Three tension specimens shali be tested for each sampling frequency. 16 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83054C 4.6.18
26、.3 Immersion at 160F. The baffle material shall be immersed in pure distilled water at 160 - +5“F (71.1“ 52.8“C). Types I, II, and III baffle material shall be immersed for 6 weeks (or failure) and testing f-equency shali be at 2 week intavals until fdure. Types IV and V baffle material shall be hne
27、rsed for 24 weeks (or fdure) and testing fiequency shali be a 4 week intervals untii fdure. Three specimens shall be tested for each sampling f-equency. Testing shall be conducted in loosely capped jan using 900 225 mls of water for each nine tension specimens. 4.6.18.4 Dry heat exposure. The baffle
28、 material shall be exposed to dry heat at 250“ 55F (1 2 1.1 O - +2.8C). Baffle material shall be exposed for 8 weeks and testing frequency shali be at 2 week intervals. A minimum of two tension specimens shall be tested for each sampling fkquency. 4.6.19 Flame arrestor tests. The flame arrestor char
29、acteristics of the baffle material shall be defined using a smail scale flame tube type apparatus having a minimum total volume of 5 cubic feet and a 100 square inch cross sectional area. The following pammeters shali be satisfied in all the testing: a. Stoichiometric propane/air mixture (4.5 to 5.2
30、 volume percent propane) verified by bomb sampling- b. Spark ignition source having a minimum of 0.25 miilijoules energy c. Dry arrestor material d. Ivinimum insutnentation shall include: pressure rise, combustion temperature indication, and visual, photographic, or photocell indication of flame pen
31、etration downstream of arrestor. e. Combustion relief area shali be 80% of cross-sectional area or greater. The material used for the testing shall be taken hm a given bun which has been sufficiently tested to establish its air pressure drop (porosity) characteristics. The material shall always be o
32、riented in the test apparatus to permit flame penetration in the direction of porosity testing (direction of rise or bun height). If possible, baffle material used shall be in the lower half of the air pressure drop range. For example type I: O. 190 to 0.235; type II: O. 140 to O. 185; type III: 0.2
33、50 to 0.290; type IV: O. 140 to O. 185; type V: 0.250 to 0.290 inch of water. 4.6.20 Material oversize. The material shall always be slightly oversized, 2% maximum when installed and restraints used to avoid arrestor movement during testing. The combustible mixture on each test shall be verified by
34、bomb sampling and shall meet the minimum criteria for pressure rise, see figure 3. 4.6.21 Testing. The following testing shall be conducted and all data results shali be reported for each test condition (see figure3 for typical flame arrestor apparatus): 17 Provided by IHSNot for ResaleNo reproducti
35、on or networking permitted without license from IHS-,-,-MIL-DTL- 83 054C 4.6.2 1.1 Sinde void ignitions. Single void ignitions shall be conducted at 3 psig (17.6 psia) initial pressure with percent combustion volumes (percent V,) of: a. Types I, II, and IV: 5, 10, 15,20,30,40, and 50 volume percent
36、b. Types III and V: 10,20,30,35,40, 50, and 60 volume percent A minimum of one test shall be conducted for a given condition and ali data such as bomb and system pressure rise, test temperature, extent and location of arrestor damage, and any other related information shall be submitted to the quaii
37、fymg activity. A plot of pressure rise versus (percent) combustion volume shall be submitted for each initial pressure condition. Repeat test may be conducted on the material provided the damaged (burned) arrestor is replace after each test. All tests shall be conducted at standard temperatures and
38、conditions. 4.6.21.2 Arrestor volume. The amount of arrestor (thickness) required to prevent flame propagation from V, to V,. when the combustion volume (V,) is set at 9.1 and 16.7 volume percent and O and 3 psig initial pressures shall be determined Testing shall be conducted at 1 inch thick interv
39、als and at the minimum required arrestor thickness (Tm), a minimum of two tests shall be conducted. Repeat tests may be run only if material is undamaged Au data including system and bomb pressure rise, test temperatures, extent and location of arrestor damage, and any other related information shal
40、l be reported. The ratio of arrestor volume to combustion volume or V;JN, shall be calculated for each minimum arrestor thickness um). 4.6.22 Corrosion and adhesion test. One 4x33 inch baffle material specimen cut such that the 4 inch dimension is in the direction of material rise shall be exposed i
41、n contact with 7075 aluminum doy in accordance with specification UNS A97075 for 14 days at 75 25F (23.9 22.8OC) (room temperature) and 95 +5% relative humidity. 4.6.22.1 Surface finish Two sets of metailic plates shall be used having a surface finish of 5- 15 micro- inch finish obtained by lapping.
42、 The roughness shall he determined by a profilometer or equivalent instrument. The roughness reading is the arithmetical average (AA) of the deviations in the surface expressed in micro-inches measured normal to the surface. For these tests the surface finish should be as follows: 5- 15 micro-inch m
43、easure perpendicular to the lay at a roughness-width cutoff rating of 0.030 inch and a maximum roughness-width rating of 0.015 inch. One set shall be clamped together with the baffle material specimen such that the baffle material is compressed from 4 to 3 inches in thickness in contact with the pol
44、ished daces. This set along with the extra plates (controls) shall then be exposed for 14 days at room temperature and 95 +5% relative humidity in a sealed container or humidity cabinet. Test specimens should be oriented such that the metal plates are vertical in order 18 Provided by IHSNot for Resa
45、leNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83054C to minimize moisture condensation and pooling on the plate surfaces. At the termination of the test, there shail be no adhesion of the baffle material :o the metal plates nor shall there be any evidence of pitting,
46、 erosion, corrosion, or bad discoloration as a result of the material contact, as determined by the following procedures. The basis for the comparison shall be the exposed set of control plates. a. The surfaces of the plates which were in contact with the material shall be inspected for such things
47、as discoloration, deposits, and pitting. If any of these conditions exists, the surface of the plates shall be washed in precipitation naphtha. Deposits determined as urethane materials or elements there from which can be removed by this process shall be construed as adhesion. b. If any other marks
48、remain on the surface of the plates after being washed in precipitation naphtha as specified (see 4.6.20(a), the surfaces shall be lightly polished with a nonabrasive cloth buff. Any pits or eroded marks remaining after this process shall be construed to be corrosion. Discoloration or staining (mark
49、s which do not physically affect the surface of the plates and which easily wash off or buff off) shail not be considered detrimental. 4.6.23 Sunshine test. The baffle material shall be tested for up to 100 hours exposure to the accelerated weathering produced by a carbon arc lamp in accordance with ASTM-G23. Five samples (slabs) of material, approximately 8x22 inches thick, shail be cut from the upper one-third of the test section and adjacent to or n
