1、MIL-DTL-83833 9999906 2019213 878 MIL-DTL-83833 (USAF) 1 July 1996 DETAIL SPECIFICATION 3000 GALLON AERIAL BULK FUEL DELIVERY SYSTEM BLADDER GENERAL SPECIFICATION FOR This specification is approved for use by the Department of the Air Force and is available for use by all Departments and Agencies of
2、 the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the general requirements and tests for a 3000 Gallon Aerial Bulk Fuel Delivery System (ABFDS) Bladder, used with the C- 130 and C-14 1 aircraft. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are spe
3、cified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of 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 tha
4、t they must meet all specified requirements in documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 SDecifications. standards. and handbooks. The following specifications, standards, and handbooks form a part of this document to t
5、he extend specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS FEDERAL W-F-800 - Fuel Oil, Dies
6、el Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Engineering Department, SA-ALC/TILDD, Kelly AFB, TX 7824 1-5000, by using the self-addressed Standardization Document Improvement Proposal (DD
7、Form 1426) appearing at the end of this document or by letter. AMSC NIA FSC 5430 DISTRIBUTION STATEILIEN T A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STANDARDS DEPARTMENT OF DEFENSE MIL-
8、STD-130 MIL-STD-8 1 O MIL-STD- 1791 Identification Marking of U. S. Military Property Environmental Test Methods and Engineering Guidelines Designing for Internal Aerial Delivery in Fixed Wing Aircraft (Unless otherwise indicated, copies of the above specifications, standards, and handbooks are avai
9、lable from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 191 11-5094.) 2.2 Non-Government publications. The following document(s) form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which ar
10、e 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 the solicitation (see 6.2). AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) H3 5.1 - Alloy and Tempe
11、r Designation Systems fpr Aluminum (Application for copies should be addressed to the American National Standards Institute (ANSI), 11 West 42nd Street, New York, NY 10036) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) A276 - B85 - B22 1 - D1149 - Standard Specification for Stainless Steel Bars
12、and Shapes Standard Specification for Aluminum Alloy Die Castings Standard Specification for Aluminum and Aluminum Alloy Extended Bars, Rods, Wire, Shapes and Tubes. Standard Test Method for Rubber Deterioration Surface Ozone Cracking in a Chamber (Application for copies should be addressed to the A
13、merican Society for Testing and Materials (ASTM), 1916 Race Street, Philadelphia, PA 19103-1 137.) 2.3 Order of precede nce, In the event of a conflict between the text of this document and the references cited herein (except for related associated detail specifications, specification sheets, or MS
14、standards), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article mct ion. When specified, (see 6.2), five (5) samples shall be subjected to first arti
15、cle inspection (see 6.3) in accordance with 4.3. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83833 9997906 2019215 640 MIL-DTL-83833 t 3.1.1 SamDle selection plan. Prior to initial production, the contractor shall produce a Sample Selec
16、tion Plan. The plan shall be designed for use in the quality conformance testing of Section 4 and shall provide the Government a method of selecting production seams, bonded fittings, coated fabric, and handle samples for destructive testing. The samples shall be cut from a production Bladder select
17、ed at random in accordance with Section 4. The test samples shall be provided in sufficient quantity for testing as specified in the Sample Selection Plan. The Sample Selection Plan shall be made available, upon request, to the contracting officer or Government representative on the site of the manu
18、facturer. 3.1.2 Bladders for testinn. Bladders selected as testing samples are in addition to the quantity required for delivery and shall remain the property of the contractor after completion of testing. All Bladders selected as samples for destructive testing must be completed samples. 3.1.3 Proc
19、ess data. Prior to the initial product, the contractor shall make available to the Government a description of the materials, documented work instructions, processing, and fabricating procedures which will be used by the contractor to assure that each production Bladder is a duplicate of the First A
20、rticle Bladder. Changes of materials, components, design, procedures, or sources of supply from those initially selected shall be subjected to the approval of the Government. 3.2 Materials. The materials shall be as specified herein. However, when a definite material is not specified, a material sha
21、ll be used which will enable the bladders to meet the performance requirements of this specification. Recovered materials shall be used to the maximum extent possible. 3.2.1 Material deterioration. prevention. and control. The Bladder shall be fabricated from compatible materials, inherently resista
22、nt or treated to provide protection against the various forms of deterioration that may be encountered in the operational and storage environments to which it may be exposed. 3.2.1.1 Dissimilar metals. Dissimilar Metals shall not be used in intimate contact with each other unless appropriately prote
23、cted against galvanic corrosion. 3.2.1.2 Jdentification of materials and finishes. The contractor shall identi the specific material, material finish, or treatment for use with components and subcomponents, and shall make information available upon request to the Government. 3.2.2 Nvlon cloth. The n
24、ylon cloth of the coated fabric shall be high tenacity and heat and light resistant. The nylon cloth shall be free from any imperfections affecting strength, coating adhesion, or coating thickness. 3.2.2.1 . When tested as specified in 4.6, the nylon cloth shall have a retained breaking strength tha
25、t is not less than 45% percent of its initial breaking strength warp and fill pounds minimum. 3.2.3 Coated fabric, The coated fabric shall be free from blisters, holidays or pinholes, and shall show no signs of coating delamination. The coated fabric shall withstand the effects of all environmental
26、elements stated herein without damage or deterioration of performance requirements. 3.2.4 Coatin? compounds. Each and every compound used for the formulation of Acrylonitrile-Butadiene coatings shall be suitable for use with hydrocarbon fuels containing up to 40% 3 Provided by IHSNot for ResaleNo re
27、production or networking permitted without license from IHS-,-,-MIL-DTL-83833 9999906 2039236 587 m MIL-DTL-83 833 percent aromatics. The coating compounds shall be resistant to fungus, weathering, ozone, hydrolytic attack, and temperatures up to 160“ F. 3.2.5 FiWevacuate and vent nozzle material. A
28、lloy and temper designations of wrought aluminum shall be in accordance with ANSI H35.1. Cast aluminum alloy shall conform to ASTM B85. Mold and sand castings are permissible. 3.2.6 FiWevacuate and vent flange material. Alloy and temper designations of wrought aluminum shall be in accordance with AN
29、SI H35.1. Cast aluminum alloy shall conform to ASTM B85. Mold and sand castings are permissible. 3.2.7 “D“ rings material. The “D“ ring material shall be equivalent to ASTM A276 Type 304L stainless steel rod, a low carbon alloy steel that allows welding. 3.3 Design and construction. The bladder shal
30、l be constructed in accordance with the design in figures 1 through 10. It is a built-up assembly of a number of constituent parts. These parts shall be joined by a leakproof bonding process which results in a homogeneous bladder equipped with twenty-eight (28) diagonal forward restraint straps, ten
31、 (10) lateral double “D“ tie down rings, and eight (8) lift handles. The bladder shall also equipped with a vent assembly and filYevacuate assembly. Internal to the bladder shall be three (3) rows of fluid flow restricters (synonymous with surge suppresser) which are tied to the internal bladder wit
32、h nylon tie cord. The fiIYevacuate assembly shall be fitted with a quick disconnect type pressure gauge. 3.3.1 Bladder and assoc iated CO moonent design. 3.3.1.1 Basic bladder . The basic Bladder shall consist of six (6) Sections joined by an adhesive bonding process. The composition of the basic Bl
33、adder material shall be Acrylonitrile-Butadiene Rubber (NBR) and nylon fabric inter-layered to form a layered sandwich construction. The Bladder shall be 1 O0 inches wide, 235 inches long, and approximately four (4) inches high when collapsed. The Bladder shall be 108 inches wide, 240 inches long, a
34、nd approximately 36 inches high when filled to normal capacity. 3.3.1.2 Double “D“ tie down ring. There shall be ten (10) double “D“ tie down rings located on the upper Bladder external surface. The rings shall be attached to the Bladders longitudinal center line by means of a coated NBR nylon strap
35、 which is bonded to a patch which, in turn, is bonded to the Bladder surface. 3.3.1.3 Lift handles . The Bladder shall be equipped with eight (8) lift handles located below the natural fold line of the Bladder. The handles shall be formed from two (2) individual straps of coated fabric wrapped toget
36、her with a coating to enable shaping. The straps shall be bonded to a patch which is, in turn, bonded to the external Bladder surface. 3.3.1.4 Fi Wevacuate assemblv. The filYevacuate assembly shall consist of two subassemblies which are mated with twenty (20) mounting bolts utilizing an O-ring for t
37、he sealing medium: a. Subassemblv No. 1 % Subassembly 1 shall be the filYevacuate nozzle which allows the attachment to the Bladder on one side and the cap sealing of the nozzle or hose attachment point on the other. The fi1Yevacuate nozzle shall contain a foot feature on the lower surface of the mo
38、unting plate. The foot feature shall consist of four (4) pedestals with a diagonal channel across two (2) of the four (4) 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83833 pedestals. This feature enables the fill/evacuate nozzle to come
39、 into contact with the lower internal surface of the Bladder during fuel evacuation without allowing the lower surface to be sucked up into the suction port. b. Subassembly No. 2. Subassembly 2 shall be the fill/evacuate flange which is made integral with the Bladders surface by the use of adhesive
40、bonding and coating to form a leakproof attachment. 3.3.1.5 Vent assemblv. The vent assembly shall consist of two (2) subassemblies which are mated with ten (1 O) mounting bolts utilizing an O-ring for the sealing medium: a. Subassembly No. 1. Subassembly 1 shall be the vent nozzle which allows the
41、attachment to the Bladder on one side and the cap sealing of the nozzle or the attachment of the anti-siphoning valve on the other. b. Subassembly No. 2. Subassembly 2 shall be the vent flange which is made integral with the Bladders surface by the use of adhesive bonding and coating to form a leakp
42、roof attachment. 3.3.1.6 Fluid flow restricters, The Bladder shall be equipped with three (3) internal rows of fluid flow restricters which control fuel surge. These restricters shall be trapezoidal sections of material which are a sandwich design with a stiffener to allow them to stand away from th
43、e Bladders internal skin. There shall be twenty (20) Sections in each row arranged alternately to restrict flow in both longitudinal directions. Each section of material shall be tied to the Bladders internal surface by means of an interlaced nylon cord utilizing eyelet protected openings for the la
44、cing. The eyelets shall be present on the restricter sections and mating ribs of Bladder material which enable a continuous ring of restricters to be formed that completely encircle the interior of the Bladder laterally. This design produces a 26: 1 ratio of input velocity to output velocity by tran
45、smitting fluid surge to the bladder skin. An alternate design approach may be selected to enable new technology approaches with Government approval. 3.3.2 Bladder assemblv CO n struction . 3.3.2.1 Basic bladder. The Bladder shall be fabricated fi-om single-ply coated fabric as specified herein. The
46、configuration and dimensions of the Bladder and the location of ports, fittings, handles, and restraint system shall be as shown in Figure 1. For both Bladder interior and exterior, all coated fabric edges (seams, patches, and fabric flanges of fittings) shall be covered with coated fabric or coatin
47、g compound used to fabricate the Bladder. Coated fabric panels may be spliced together to make up the length of the Bladder. 3.3.2.1.1 Seams. All Bladder seams between adjacent panels shall be constructed to prevent wicking through the nylon fabric. 3.3 -2.2 Forward restraint harness, The Forward Re
48、straint Harness shall be built into the forward section of the Bladder as shown in Figure 1. The harness shall consist of fourteen (14) each 24-foot straps which are bonded together and bonded to the Bladder. Each individual strap shall attach to a “D“ Ring in fashion to enable the “D“ to be an inte
49、gral part of the forward restraint harness and bladder. This shall be accomplished on both ends of the strap. The underside straps are attached to a fixed length strap (not part of the Bladder) to the appropriate tie down clevis on the platform utilized for transportation. The topside straps are attached to an adjustable length strap (not part of the Bladder) to the appropriate 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI
