1、I INCH-POUND I I I MIL,-DTL-32028(0S) 3 November 1998 DETAIL SPECIFICATION CORD, DETONATING ASSEMBLY This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by all Department and Agencies of the Department of Defense. i. SCOPE 1.1 Sco
2、pe. This specification covers the requirements for the manufacture and acceptance of the Detonating Cord Assemblies. Referred to in this document as DCA. 1.2 Application. These DCAs were developed for use in the Emergency Egress Hatch Removal System (EEHRS) on V-22 Aircraft. These DCAs were develope
3、d under Bell-Boeing specification 901 -947-748. 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 of this specification or recommended for additional infor
4、mation 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 documents specified in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1
5、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 listed in the issue of the Department of Defense Index of Specifications a
6、nd Standards (DODISS) and supplements thereto, cited in the solicitation (see 6.2). Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to the Commander, Indian Head Division, Naval Surface Warfare Cent
7、er, Technical Information Division (Code 840), 101 Strauss Avenue, Indian Head, MD 20640-5035, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by sending a letter. AMSC NIA FSC 1377 Provided by IHSNot for ResaleNo reproduction or net
8、working permitted without license from IHS-,-,-MIL-DTL-32028( OS) DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. SPECIFICATIONS FEDEW FED-STD-595 MILITARY MIL-D-2 16256 STANDARDS MIL-STD-33 1 MIL-STD-8 1OD MIL-STD- 1 168 DOD-STD-2101 Colors used in Government Procu
9、rement Design and Evaluation of Cartridges for Cartridge Actuated Devices Fuze and Fuze Components, Environmental and Performance Tests for Environmental Test Methods and Engineering Guidelines Ammunition Lot Numbering Classification of Characteristics (Unless otherwise indicated, copies of Federal
10、and Military specifications and standards are available from: Standardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphiq PA 191 11-5094) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a par
11、t of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. SPECIFICATIONS NAVAL SEA SYSTEMS COMMAND (Code Ident 5371 1) WS 5003F Hexanitrostilbene (HNS), Explosive DRAWINGS NAVAL AIR SYSTEMS COMMAND (Code Ident 30003) 3205AS 109 Cor
12、d, Detonating Assembly 3205AS110 Cord, Detonating Assembly 3205AS 1 11 Cord, Detonating Assembly 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32028 II 999990b 2085235 389 MIL-DTL-32028( OS) 3205AS 182 Firing Fixture, Assembly 3205AS217 C
13、losed Bomb Fixture (Application for copies should be addressed to the Commanding Officer, Naval Air Technical Service Facility, 700 Robbins Avenue, Philadelphia, PA 19 1 1 1-5079.) 2.3 Non-Government publications and drawings. The following documents form a part of this document to the extent specif
14、ied herein. Unless otherwise specified, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in solicitation. Unless otherwise specified, the issues of documents not listed in DODISS are the issues of the documents cited in the solicitation (see 6.2). B
15、ELL-BOEING DOCUMENTS (Code Ident 77272) 901-947-784 Emergency Escape Hatch Removal System Specification 901-947-034 V-22 Vibration Test Report (Application for copies of Bell-Boeing documents should be sent to Bell Helicopter Textron Inc., 600 E Huyrst Blvd, Fort Worth, TX 76101.) OEA AEROSPACE INC.
16、 DRAWINGS (Code Ident 17610) 3.3.2-26 TLX Cord Acceptance Test Procedure 3.3.2-47.1 Standard for TLX Cord, Braided, Stabilized, and Vibrated, PN 461 16-1-xXXXX, and PN 461 17-1-XXXXX 52280 TLX Transfer Line, Primer/High Explosive 52275 TLX Transfer Line, High ExplosiveiLow Energy 52290 TLX Transfer
17、Line, High ExplosivelGas Generating 25547-1 Primer, M42C 1-979, Accepted (Application for copies of OEA Aerospace Inc. drawings should be sent to OEA Aerospace Inc., Hwy 12 and ET Rd, P.O. Box KK, Fairfield, CA 94533-0659.) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM E 1742 Standard Pract
18、ice for Radiographic Inspection (Application for copies of ASTMs should be sent to the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-3202
19、8 m 999990b 20852Lb 215 MIL-DTL-32028(OS) 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, superseded applicable laws and regulations unless a specific
20、 exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified in the contract or purchase order (see 6.2), a sample shall be subjected to first article inspection as specified in sections 4.2.1 and 6.3. A first article inspection shall be required if: a. Two years or more has passe
21、d since the DCA or a similar item were manufactured. b. There has been a major turn over in personnel. c. There have been major changes to the production facility. d. There has been a transfer of production to a new facility or site. 3.2 Flight critical part. These DCAs are flight critical items as
22、defined in 6.4.2 and the technical data package shall be identified and procured as such. 3.3 Design and construction. The design and construction of the DCAs shall meet all the requirements of this specification with special effort to ensure inherent reliability so that the equipment will consisten
23、tly perform as specified. The requirements of MIL-D-21625 shall apply as requirements of this specification for manufacturing, testing, and procurement with the exceptions and additions specified herein. All parts with the same dash number shall be dimensionally and functionally interchangeable. Alu
24、minum end fittings shall withstand 90 inch- pounds minimum assembly torque without deformation and stainless steel end fittings shall withstand 120 inch-pounds. The DCAs shall be configured such that the energy stimulus shall be contained and shall not emit shrapnel when fired in the s-instal1ed”con
25、dition. The DCA end fittings shall remain intact in the port. Out-gassing of the DCA and fraying of the stainless steel overbraid are permissible provided that some of the overbraid remains intact and the aforementioned criteria is met. DCAs shall be constructed such that the portion of the assembly
26、 between the end fittings shall not separate or disengage from the end fitting when fired in the s- installed, condition over the specified temperature range specified herein. 3.3.1 Item definition. The DCAs are the explosive transmission mechanism used to provide a transfer path of explosive stimul
27、us from one pyrotechnic device to another. The percussion primer equipped DCA accepts mechanical energy input and transitions it into an explosive stimulus. The high explosiveflow energy DCA acts as a one-way valve to explosive stimulus. The gas generator equipped DCA provides a pressure to function
28、 a thruster, converting the ballistic stimulus into mechanical work. 3.3.2 Configuration control. Only the DCAs procured from the vendor(s) listed on drawings 3205AS 109 through 3205AS 11 1, and to the drawing dash numbers in Table I are approved for the application specified. A substitute DCA shall
29、 not be used or procured without prior approval and testing by the Indian Head Division, Naval Surface Warfare Center. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-DTL-32028 = 7999906 2085237 351 = MIL-DTL-32028(OS) 3.4 Primary components.
30、Primary components are the TLX Cord stabilized, braided, vibrated, the percussion primer, the loaded booster shell, and the ferrule check valve assembly. Only one lot of each primary component shall be used in a DCA lot. One primary lot may be used in more than one DCA lot. Table I. Dash numbers. 3.
31、4.1 Percussion Primers. Only M42C1-979 percussion primers which have meet the defined certification requirements per drawing 25547-1 shall be used. Only primers manufactured within the last 24 months or re-certified within the last 12 months shall be used in the DCAs. 3.5 DCA production. The DCAs sh
32、all be manufactured in accordance with drawings 3205AS109,3205AS110 and 3205AS111 and the drawings listed thereon. Each production DCA shall meet the requirements of 3.4 and 3.5.1 through 3.5.4 as outlined in Table II. Failure of any DCA to meet the requirements of 3.4 and Table LI shall result in r
33、ejection of the lot oDCAs 3.5.1 Visual inspection. The DCA shall be free of the following defects illegible, missing or inaccurate markings, damage, burrs, dents, sharp edges, chipped or incomplete protective finish, or other defects which may prevent the installation of the DCA. Each DCA shall meet
34、 the requirements of the drawings 3205AS 109 through 3205AS 1 11. 3.5.2 Radiographic examination. 3.5.2.1 X-ray examination. Each DCA end assembly and approximately 3 inches of line behind the tips shall be x-rayed. When radiographically examined in accordance with 4.3.2, the DCA shall show proper a
35、ssembly, presence of parts, uniformity of propellant, and sealing. In particular the x-rays shall be check for proper orientation of the primer anvil within the primer cup, and the presence of the check ball in the gas generator portion of that DCA. The radiographic inspection shall show no foreign
36、materials present. All defects shall be identified on the film and defective DCAs removed from the lot. 3.5.2.2 N-ray examination. Each DCA shall be N-rayed along the full length of the longitudinal axis. When radiographically examined in accordance with 4.3.2, the DCA shall show the proper assembly
37、, presence of parts, uniformity of propellants, and sealing. All defects shall be identified on the film and defective DCAs removed from the lot. 3.5.3 In-process inspections. The following are minimum in-process inspections required for product integrity. 3.5.3.1 Leakage. The leak rate of each DCA
38、assembled end fitting shall not exceed 1 .O xi cc/sec of dry gas when tested in accordance with 4.3.3. 3.5.3.2 Halar tubing. Each roll of Halar tubing shall be internal pressure tested to (+) one (1) atmosphere and inspected to assure no leakage before coating with the HMX/Aluminum mixture. (see 4.2
39、.1.2) 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32028 6 999990b 2085218 098 6 3.5.3.3 DCA cord. The spool of loaded cord proposed for use in production shall be tested on each end and every 500 feet to meet the detonation velocity req
40、uirement of 1400 to 2500 meters/second (see 4.2.1.3). 3.5.3.4 Corrosion. All components scheduled for use in production shall be free of corrosive products (see 4.2.1 S). 3.5.3.5 Explosive weight. Every 100 feet of loaded cord a 1 meter sample shall be taken to verify the requirement of 201 10 mg of
41、 the HWAluminum mixture per meter. bee 4.2.1.6) 3.5.3.6 End fitting tensile test. To meet the requirements of 4.2.1.4, the end fitting joint between the outer ferrule and the braided stainless steel casing shall be capable of withstanding a tensile load of 200 pounds when the load is applied at the
42、rate not exceeding 20 pounds per minute. The post test lines shall be subjected to radiographic inspection and any unit showing a gap greater than 0.050 inch between the bottom center bore and the Halar tubing shall reject the lot. The complete lot may be subjected to the end fitting test and 100 pe
43、rcent screened to remove any DCA failing to meet the requirement for a gap less than 0.050 inch. 3.6 DCA first article environmental exposure. The DCA shall meet all requirements of 3.6.1 through 3.6.8.5 and the acceptance criteria of 4.4. 3.6.1 Vibration. The DCA shall not initiate or incur any int
44、ernalexternal damage or degradation when vibration cycles are applied in accordance with 4.3.4. 3.6.2 Shock. The DCA shall not initiate or incur any internalexternal damage or degradation when saw tooth shocks are applied in accordance with 4.3.5. 3.6.3 Temperature-shock/humidity/altitude (TSHA) cyc
45、ling. The DCA shall not initiate or incur any internallexternal damage or degradation when subjected to TSHA cycling in accordance with 4.3.6. 3.6.4 Salt fog. The DCA shall not initiate or incur any internallexternal damage or degradation when subjected to salt fog testing in accordance with 4.3.7.
46、3.6.5 Six-foot drop. The DCA shall not initiate or incur any major internallexternal damage or degradation as a result of the six-foot drop test in accordance with 4.3.8. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-DTL-32028 97997Qb 208523
47、7 T24 MJL-DTL-32028( OS) 3.6.6 Forty-foot drop. The DCA shall not initiate or incur any intenidexternaldamage which makes the DCA unsafe for disposal as a result of the forty-foot drop in accordance with 4.3.9. 3.6.7 Functioning. The DCA shall meet the requirements of 3.6.7.1,3.6.7.2, or 3.6.7.3 whe
48、n fired in accordance with 4.3.10. 3.6.7.1 The DCA (High-Gas). When initiated by a SMDC or TLX test tip, the DCA shall propagate and initiate the gas generator tip. At all temperatures, the gas generator shall produce a minimum pressure of 200psig within 10 milliseconds in the 2.5 cubic centimeter c
49、losed bomb (3205AS217). The pressure remaining after 20 milli-seconds shall be greater than 2OQsig. The peak pressure shall not exceed 3,000 psig for a duration greater than 200 microseconds. 3.6.7.2 The DCA (Primer-High). The DCA shall be initiated by energizing the solenoid firing mechanism in fixture 3205AS 182. The DCA shall initiate and propagate along its length. The output end shall dent an 6061-T6 Aluminum dentblock conditioned to 70 5 “F to the follow
