1、INCH-POUND MIL-DTL-S2929A(OS) 13 September 2000 SUPERSEDING MIL-I-S2929(OS) 18 August 1994 DETAIL SPECIFICATION INITIATOR, EXPLOSIVE ACTUATED, JAU-24/A This specijcation is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by all Departments and Agen
2、cies of the Department of Defense. 1. Scope. 1.1 Scope. This specification covers the requirements for the manufacture and acceptance of the JAU-24lA Explosive Actuated Initiator, referred to herein as “initiator“. 2. Applicable Documents. 2.1 General. The documents listed in this section are specif
3、ied 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 that t
4、hey 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 Specifications and standards. The following specifications and standards form a part of this document to the extent specified herein
5、. Unless otherwise specified, the issues of these documents are those listed in the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS DEPARTMENT OF DEFENSE MIL-P-20444 Primer, Percussion, M42 Parts for and
6、 Loading, Assembling and Packing MIL-D-21625 Design and Evaluation of Cartridges for Cartridge Actuated Devices Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Indian Head Division, N
7、aval Surface Warfare Center, Standardization Team (Code 840M), 101 Strauss Avenue, Indian Head, MD 20640-5035 by using the Standardization Document Improvement Proposal D Form 1426) appearing at the end of this document, or by sending a letter. AMSC NIA FSC 1377 DISTRIBUTION STATEMENT A: Approved fo
8、r public release; distribution is unlimited. Licensed by Information Handling ServicesSTANDARDS DEPARTMENT OF DEFENSE MIL-STD-8 1 O Environmental Engineering Considerations and Laboratory Tests MIL-STD- 1 168 Ammunition Lot Numbering and Ammunition Data Cards (Unless otherwise indicated, copies of f
9、ederal and Department of Defense specifications and standards are available from Standardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 191 11-5094.) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and pu
10、blications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. SPECIFICATIONS Naval Sea Systems Command (CAGE Code 5371 1) WS 21535 Ignition Device, (Percussion), PV-l/A (Application for copies should be addressed t
11、o Commander, Naval Surface Warfare Center, Indian Head Division, 101 Strauss Avenue, Data Control Branch (Code 8410), Indian Head, MD 20640-5035.) DRAWINGS Naval Air Systems Command (CAGE Code 30003) DL 850AS133 Initiator, Explosive Actuated, JAU-24/A 850AS821 Test Fixture Initiators, Explosive Actu
12、ated, JAU-23/A and JAU-24/A 850AS825 Vibration Fixture, Initiators, Explosive Actuated, JAU-23/A and JAU-24/A 851AS110 Ignition Device (Percussion), PV-l/A (Application for copies should be addressed to Commander, Naval Surface Warfare Center, Indian Head Division, 101 Strauss Avenue, Data Control B
13、ranch (Code 8410), Indian Head, MD 20640-5035.) 2.3 Non-Government publications and drawings. The following documents form a part of this document to 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
14、 cited in 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 SOCIETY FOR TESTING AND MATERIALS (ASTM) 2 Licensed by Information Handling ServicesMIL-DTL-82929A(OS) ASTM E 545 Standar
15、d Method for Determining Image Quality in Direct Thermal Neutron Radiographic Examination ASTM E 1742 Standard Practice for Radiographic Examination (Application for copies of ASTMs should be addressed to the American Society for Testing and Materials, 1916 Race street, Philadelphia, PA 19103-1 187.
16、) SOCIETY OF AUTOMOTIVE ENGINEERS (SAE) SAE AS 5604 Compass, Magnetic, Pilots Standby (Application for copies should be addressed to the Society of Automotive Engineers International, 400 Commonwealth Drive, Warrendale, PA 15096-001 .) 2.4 Order of precedence. In the event of a conflict between the
17、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 unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified in the contract or purchas
18、e order (see 6.2), a sample shall be subjected to the first article inspection (see 4.2.1 and 6.4). 3.2 Primary components. Only one lot of primary components shall be used in each lot of initiators, although, a primary component lot may be used in more than one initiator lot. The initiator lot shal
19、l contain only one delay cartridge assembly lot manufactured within 12 months of completed initiator lot assemblies. 3.2.1. SCOT P/N 6078100. The primary components for the initiator, SCOT P/N 6078100, are the PV-l/A ignition device, the ignition powder, the delay mix, the propellant charge, the lea
20、d azide and the hexanitrostilbene (HNS) contained in the initiator cartridge P/N 6078 150. 3.2.1.1 PVU-1/A ignition device. The PVU-1/A ignition device used in the initiator, SCOT P/N 6078 100, shall be furnished fi-om lots manufactured within the past 24 months or have been recertified within the p
21、ast 12 months. The ignition device shall be manufactured in accordance with Drawing 851AS110 and shall be fi-om lots which are accepted in accordance with product specification WS 21535. The PVU-1/A ignition device shall be fi-ee of the following defects when examined by x-ray: missing or abnormally
22、 thin charge; charge broken, cracked or porous, cracked or off-center anvil or other misplaced or deformed inert parts; anvil abnormally close to cup dome; and any other observable defects in assembly. 3.2.2 Teledyne P/N 818307-105. The primary components for the initiator TELEDYNE P/N 818307-105 ar
23、e the M42C2-793 percussion primer, the explosive mix, the delay fuse, the delay mix and the booster charge. 3.2.2.1 M42C2-793 percussion primer. The M42C2-793 percussion primer used in the TELEDYNE P/N 818307-105, shall be manufactured and tested in accordance with MIL-P-20444. The primers shall 3 L
24、icensed by Information Handling ServicesMIL-DTL-82929A(OS) be loaded into the initiators within 24 months of new primer acceptance testing or 12 months of primer recertification testing. 3.3 Initiator production. The initiators shall be manufactured in accordance with DL 850AS133 and the documents l
25、isted thereon. Each production delay cartridge assembly and initiator shall meet the re- quirements of 3.3.1 through 3.3.1.4 and 3.3.2 through 3.3.2.3, respectively. Failure of any delay cartridge or initiator to meet the applicable requirements of 3.3 shall result in rejection of that unit, or, in
26、the case of cartridge output gap testing, shall result in rejection of the cartridge lot. 3.3.1 Delay cartridge assembly (SCOT P/N 6078150 or Teledyne P/N 818570-5) inspection. 3.3.1.1 Cartridge output gap. Cartridges shall detonate the test tip high order when tested as described in4.3.1. 3.3.1.2 V
27、isual inspection. All delay cartridge assemblies manufactured under contract shall be visually inspected and screened for defects as outlined in 4.3.2.1. 3.3.1.3 Leakage. Delay cartridge assemblies shall not exhibit a leak rate in excess of 1 X cubic centimeters per second of air when tested in acco
28、rdance with 4.3.3. standard 3.3.1.4 Radiographic inspection. The delay cartridge assemblies shall show proper assembly, presence of parts, sealing, presence of delay and explosive mixes, non-metal parts, and the proper assembly of pyrotechnichon-metallic materials when examined radiographically in a
29、ccordance with 4.3.4.1. 3.3.2 Initiator inspection. 3.3.2.1 Visual inspection. All initiators manufactured under contract shall be visually inspected and screened for defects as outlined in 4.3.2.1. 3.3.2.2 Radiographic inspection. Initiators shall show proper assembly, presence of parts, sealing, a
30、nd presence of delay cartridge assembly when examined radiographically in accordance with 4.3.4.2. 3.3.2.3 Demagnetization. Initiators shall not deflect an approved Pilots standby compass more than three degrees in either direction when passed in front of the compass. The initiators shall be tested
31、in accordance with 4.3.5. 3.3.2.4 Electrical bonding. The bonding resistance of the initiator shall not be greater than 0.0025 ohm when tested in accordance with 4.3.6. 3.3.2.5 Threaded joint torque. Initiator components which form a threaded joint and contain provisions for the attachment of SMDC s
32、hall be capable of withstanding a break away torque of 150 in- lbs minimum (no movement of parts) when tested in accordance with 4.3.7. 3.4 Initiator performance. Initiators shall be capable of meeting all requirements of 3.4.1 through 3.4.6. 4 Licensed by Information Handling ServicesMIL-DTL-82929A
33、(OS) 3.4.1 Vibration. There shall be no evidence of deformation or derangement of components. The initiator shall not autoignite, shall be safe to handle, and shall meet the requirements of 3.3.2.2 and 3.4.4 following vibration testing of 4.3.8. 3.4.2 Temperature and humidity (T & H) cycling. The in
34、itiators shall meet the requirments of 3.3.2.2 and 3.4.4 after being exposed to the T & H cycle in accordance with 4.3.9. 3.4.3 Shock. The initiators shall meet the requirements of 3.3.2.2 and 3.4.4 following shock testing of 4.3.10. 3.4.4 Ballistic requirements. Initiator(s) shall meet the requirem
35、ents of 3.4.4.1 through 3.4.4.3 when tested in accordance with 4.3.1 1. 3.4.4.1 Ignition delay. The upper (U) and lower (L) limits for ignition delay shall be U= 351 milliseconds and L= 249 milliseconds when evaluated in accordance with 4.3.1 1.1. 3.4.4.2 High order detonation. The minimum plate den
36、t for high order detonation of the output SMDC test tip on the aluminum witness plate shall be 0.001 inch when evaluated in accordance with 4.3.1 1.2. 3.4.4.3 Misfire. There shall be no misfires. 4. QUALITY ASSURANCE PROVISIONS 4.1 Classification of inspections. The inspection requirements specified
37、 herein are classified as follows: a. First article inspection (see 4.2.1) b. Production inspection (see 4.2.2) c. Lot acceptance inspection (see 4.2.3) 4.2 Inspections. 4.2.1 First article inspection. Before entering into quantity production, an acceptable first article sample of 38 initiators shal
38、l be prepared using the same procedures and methods proposed for the production lot. A first article sample acceptable for functional and environmental testing shall be defined as a sample which has met the applicable requirements of 3.2 through 3.3 of this specification. Thirty-six of these initiat
39、ors shall be expended in the tests listed in table I and two shall be retained for investigative purposes. The contractor shall deliver the initiators to the activity designated by the contracting agency for tests. Any damage inflicted by the environmental treatments, which would adversely affect th
40、e performance of the item in service application shall cause rejection of the first article sample. Any further production prior to notification by the contracting agency of first article sample acceptability shall be at the contractors risk. Failure of any initiator to comply with the requirements
41、of section 3 shall be cause for rejection of the first article represented. 4.2.2 Production inspection. All production delay cartridge assemblies and initiators manufactured under contract shall be inspected and screened to requirements specified in 3.2 through 3.3. Any unit failing to meet the req
42、uirements listed in 3.2 through 3.3 shall be rejected and removed fkom the lot. 5 Licensed by Information Handling Services4.2.3 Lot acceptance inspection. Lot acceptance inspection shall consist of the examinations and tests specified in table II. Failure of any sample initiator to comply with the
43、requirements listed in table II shall be cause for rejection of the lot represented. TABLE I. First article test plan. Ballistic test 70 f 5F -65 f 5F TABLE II. Lot acceptance inspections and tests. Ballistic test -65 f 5F Subassembly test. Performed prior to initiator assembly. 4.2.3.1 Sample size.
44、 A random sample from each production lot, including the retained sample for investigative purposes, shall be selected in accordance with table III for lot acceptance inspection. Test sample initiators and initiators retained for investigative purposes shall not be applied as part of the quantity sp
45、ecified for delivery by the contract or purchase order. TABLE III. Lot acceptance sampling. 6 Licensed by Information Handling ServicesLot Size Up to 50 51 to 200 201 to 500 4.3 Inspections and tests. Test Sample Size Retained Sample Size Cartridge Output Gap Test Sample 12 2 2 18 3 4 24 4 6 4.3.1 C
46、artridge output gap test. Prior to assembly of initiators, a random sample of cartridges, selected per table III, shall be subjected to ambient temperature gap testing. Cartridge assembly explosive output shall be capable of detonating SMDC test tips across an air gap which is four times the maximum
47、 production gap of the initiator. Failure of any cartridge to meet the requirement of 3.3.1.1 shall result in rejection of the cartridge lot. 4.3.2 Visual inspections. 4.3.2.1 Initiator and delay cartridge assembly visual inspection. Each delay cartridge assembly and all assembled initiators shall b
48、e visually examined. Reject those with inadequate or illegible descriptive markings or serial numbers, dents, deep scratches, or other defects which may prevent proper installation or function. 4.3.2.2 Packaging inspection. The condition of the packaging (inner containers), packing (outer container)
49、, and markings shall be determined by comparison to the requirements of section 5. 4.3.3 Delay cartridge assembly leak test. Each delay cartridge assembly produced under contract shall be leak tested in a dry gas leak tester to determine conformance with 3.3.1.3. Units which exhibit a leak rate in excess of 1 x standard cc/sec of air at a pressure differential of 1 .O f 0.1 atmosphere shall be rejected. 4.3.4. Radiographic examination. 4.3.4.1 Delay cartridge assembly examination. Radiographic examination of delay cartridge assemblies shall include x-ray in accordance with ASTM E 17
