1、I INCH-POUND I MIL-DTL-8 1577B(OS) 20 April 2000 SUPERSEDING 24 September 1974 MIL-1-8 1577A(AS) MILITARY SPECIFICATION IGNITION ELEMENT, ELECTRIC, MARK 17 MOD O This specifcation is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by all Department
2、s and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for (see 6.1). 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
3、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 they must meet all specified requirements documents specified in sections 3 and 4 of this spec
4、ification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications and standards. The following specifications and standards 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
5、 issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplements thereto, cited in the solicitation (see 6.2). SPECIFICATIONS MILITARY MIL-1-23659 Initiators, Electric, Design and Evaluation of I I Beneficial comments (recommendations, additions, deletions) and any
6、pertinent data which may be of use in improving this document should be addressed to: Commander, Indian Head Division, Naval Surface Warfare Center, Standardization Team (Code 840M), 101 Strauss Avenue, Indian Head, MD 20640-5035, by using the Standardization Document Improvement Proposal (DD Form 1
7、426) appearing at the end of this document or by sending a letter. AMSC N/A FSC 1377 DISTRIBUTION STATEMENT 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 DOD
8、-STD-2101 Classifications of Characteristics (Unless otherwise indicated, copies of federal and military specifications and standards are available from Standardization Documents Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 191 11-5094.) 2.2.2 Other Government documents, drawings, a
9、nd 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 are those cited in the solicitation. DRAWINGS Naval Air Systems Command (CAGE Code 30003) DL 613468 Ignition Eleme
10、nt, Electric, Mark 17 MOD O 2302224 Ignition Element, Electric, Mark 17 MOD O, Assembly 2519610 Primer Assembly (Application for copies should be addressed to: Commander, Indian Head Division, Naval Surface Warfare Center, Attn: Documentation Branch (Code 8410), Indian Head, MD 20640-5035.) PUBLICAT
11、IONS Naval Sea Systems Command (CAGE Code 5371 1) OP 5 Ammunition Ashore (This publication is not furnished to bidders and contractors by the procuring activity. Contractors should contact the program sponsor or contracting officer for use of the publication.) (Copies may be procured from Defense Di
12、stribution Depot Susquehanna Pennsylvania, 05 E Street, Mechanicsburg, PA 17055-5003. Requisitions should be submitted in accordance with NAVSUP Publication 600.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise sp
13、ecified, 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 the solicitation (see 6.2). 2 Provided by IHSNot for
14、 ResaleNo reproduction or networking permitted without license from IHS-,-,-AMERICAN SOCIETY FOR QUALITY CONTROL ANSUASQC Z1.4 Sampling Procedures and Tables for Inspection by Attributes (DoD adopted) ANSUASQC Z1.9 Sampling Procedures and Tables for Inspection by Variables for Percent Nonconforming
15、(DoD adopted) (DoD activities may obtain copies from the Standardization Documents Oder Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 191 11-5094. The private sector and Government agencies may purchase from the American Society for Quality Control, PO Box 3005, 61 1 E. Wisconsin Ave., Milwau
16、kee, WI 53201-4606.) 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 unless a specific exemption has been o
17、btained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2) by the procuring activity, a sample of 137 ignition elements shall be subjected to first article inspection (see 6.3) in accordance with 4.3.2. The sample shall be manufactured using the same methods and procedures proposed for the
18、 production lot and is for the purpose of determining that the contractor, prior to starting production, is capable of producing items which comply with the technical requirements of the contract. 3.2 Conformance to documents. The Ignition Element, Electric, Mark 17 Mod O, covered by this specificat
19、ion shall be manufactured in accordance with the drawings listed on DL 613468. 3.3 Materials. All materials used in the manufacture of the ignition elements shall conform strictly with the specifications referred to on the respective drawings, unless specific approval in writing covering a departure
20、 therefrom has been obtained from the Navy cognizant field activity for cartridges prior to manufacture. When alternate materials or methods of manufacture are specified on the drawings, the bidder?s selections shall be clearly stated in the proposal. 3.4 Primary components. For the purposes of this
21、 specification the ignition compositions, primer composition, and main propellant charge are defined as primary components.(See 4.3.3.). 3.5 Cleanliness and condition of parts. All parts shall be free of chips, dirt, grease, rust and all other foreign materials. There shall be no burrs nor other imp
22、erfections of manufacture which would harmfully affect either the assembly or the functioning of the product. The cleaning methods which are used shall not be injurious to any of the parts nor shall the parts be contaminated by the cleaning agents which are used. 3.6 Explosive components volatiles.
23、The ignition compositions and the primer compositions shall have a maximum moisture content of 0.5 percent at the time of loading, as determined in accordance with 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.7.1. After consolidation of the pr
24、imer composition, the subassembly shall be dried in accordance with Drawing 2302224. 3.7 Insulation resistance. The insulation resistance between shorted electrodes (connector pins) and receptacle of each completely assembled ignition element shall be a minimum of 20 megohms when tested in accordanc
25、e with 4.7.3 at a relative humidity of 80 percent or less. 3.8 Ignition and primer compositions, compounding and loading. The ignition compositions and the primer composition shall be compounded in accordance with the applicable drawings, and shall be loaded in accordance with Drawings 25 19610 and
26、2302224, respectively. 3.9 Propellant charges. 3.9.1 Quantity. All propellant charges shall be as specified on Drawing 2302224. Charges shall be determined by weight rather than by volume measurements. 3.9.2 Smokeless powder, handling and loading. Do not subject the smokeless powder to unnecessary h
27、andling or exposure to the atmosphere. The handling and loading of smokeless powder exposed to the atmosphere shall be performed only under conditions that do not permit the relative humidity to exceed 75 percent. 3.9.2.1 Smokeless powder, condition. The smokeless powder utilized shall exhibit no ev
28、idence of decomposition. (See 4.7.2.) 3.10 Ignition element inspection. 3.10.1 Visual inspection. Ignition elements shall be free of the following visible defects: chips, burrs rough edges, incomplete threads, improper crimp, perforated closure disc, or any other imperfections which could, harmfully
29、 affect either assembly or functioning. (See 4.7.6.) 3.10.2 Bridge circuit resistance. The resistance of the bridge circuit in each completely assembled ignition element, when measured electrically as specified in 4.7.5, shall be not less than 1.0 ohm nor more than 1.2 ohms. 3.10.3 Leakage. Ignition
30、 element leakage rate shall not exceed 10 -5 cc of air or gas per second, when tested in accordance with 4.7.7. 3.10.4 X-ray. Ignition elements shall be free, of the following defects when examined by X-ray in accordance with 4.7.4: improper assembly of components, charges or inert components missin
31、g, or any other imperfections which could adversely affect performance. 3.11 Tests. 3.11.1 Electric sensitivity. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.11.1.1 No-fire. The ignition element shall not fire when an electric current of 1.0 +
32、0.10, -0.00 ampere (A) is applied in accordance with 4.7.8.1. 3.11.1.2 All-fire. The ignition element shall fire within 0.025 second when an electric current of 4.0 +0.10, -0.00 A is applied in accordance with 4.7.8.2. 3.11.2 Ballistic requirements. Ignition elements from each production lot, select
33、ed in accordance with 4.7.9, shall meet the requirements listed below when subjected to the tests prescribed in 4.7.9. 3.11.2.1 Chamber pressure. The upper (U) and lower (L) limits of maximum chamber pressure, in pounds per square inch (psi), shall be 1800 psi and 1200 psi, respectively. 3.11.2.2 Re
34、sponse time. The time from application of firing current to start of pressure rise shall not exceed 0.025 second. The time from start of pressure rise to maximum pressure shall not exceed 0.015 second. 3.11.2.3 Misfire. There shall be no misfires. (See 4.7.9.2.3.) 3.12 Workmanship. Ignition elements
35、 shall be constructed and finished in a manner to assure compliance with all requirements of this specification. Particular attention should be directed to dimensions, finishes and coatings. 4. VERIFICATION 4.1 Classification of inspections. a. First article inspection (see 4.3.2). b. Conformance in
36、spection (see 4.6). 4.2 Sampling. Unless otherwise specified, and when applicable, the, sampling plans and procedures used in the determination of the acceptability of products submitted by a supplier shall be in accordance with the provisions of ANSUASQC 21.4 or 21.9, whichever applies. 4.3 Lots. 4
37、.3.1 Inspection lots. Inspection lot definition, formation, and size shall be in accordance with ANSUASQC Z1.4 or Z1.9, whichever applies. 4.3.2 First article. When specified by the procuring activity and before entering into quantity production, an acceptable first article sample of 137 ignition el
38、ements shall be prepared. Of these ignition elements, 127 shall be expended in the tests listed below and ten shall be retained for investigative purposes. A first article sample acceptable for environmental and functional testing shall be defined as a sample which has met the requirements of 3.4 th
39、rough 3.10.4 of this specification. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.3.2.1 First article tests. First article sample acceptance shall consist of the following tests, which, except as otherwise specified herein, shall be conducted i
40、n accordance with MIL-1-23659: a. 40-foot drop (6) (nonfiring test); temperature and humidity cycling (THC) (36); vibration (12); high temperature (12); low temperature (12); untreated (12). The numbers in parentheses denote the, allocation of ignition elements for the tests. b. After exposure to th
41、e specified environmental treatment, the units from THC and the vibration tests, together with the 12 untreated units, shall be conditioned for a minimum of 6 hours at 70“ k5“F and fired in the test set as specified in 4.7.9.1. All of these units shall fire and produce results within the limits set
42、forth in 3.11.2.1 and 3.11.2.2. c. The units allocated for the high temperature and low temperature tests shall be conditioned at 225“ k5“F and -80“ k5“F, respectively, for not less than 6 nor more than 24 hours and fired in the test set as specified in 4.7.9.1. All of these, units shall fire and pr
43、oduce results within the limits set forth in 3.1 1.2.1 and 3.1 1.2.2 except that the upper and lower limits of maximum pressure for these units shall be 1900 psi and 1000 psi, respectively. d. In addition, 25 ignition elements shall be subjected to the no-fire and all-fire tests. None of these 25 un
44、its shall fire, when temperature conditioned and tested in accordance with 4.7.8.1, and all of these same 25 units shall fire within 0.025 second when temperature conditioned and tested in accordance with 4.7.8.2. e. Additionally, 12 ignition elements shall be subjected to an electrostatic sensitivi
45、ty test. Each of these 12 units shall withstand the stimulus from an electrically charged capacitor without firing when tested as specified in the applicable paragraph under the electrical tests of MIL-1-23659. All of the specified firings and tests shall be, conducted within 3 minutes after removal
46、 of the units from the specified temperature conditioning. The failure of any ignition element to meet the requirements as stated above shall cause rejection of the first article sample. 4.3.3 Production lot. The suggested ignition element production lot size is 1301 minimum and 3200 maximum. Only p
47、rimary components from a single lot or batch shall be used in a production lot of ignition elements; however, one primary component production lot may be used in more than one ignition element production lot. 4.4 Gages. The contractor shall provide gages as necessary to insure that the material to w
48、hich this specification applies will meet the dimensional requirements shown on the applicable drawings. 4.5 Classification of characteristics. The characteristics verified by the tests and examinations herein are classified as critical, major or minor in accordance with DOD-STD-2101. Tests and exam
49、inations that verify critical characteristics are identified by the symbol (C) and major characteristics by the symbol (M). The number following the classification symbol indicates the serial number of test or examination. Tests and examinations which are not annotated with a classification code are classified minor. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.6 Quality conformance inspection. Quality conformance
