1、MIL-D -85294 (AS ) 8 February 1982 MILITARY SPECIFICATION DETONATOR, ELECTRIC, MARK 71 MOD 1 This specification is approved for use by the Naval Air Systems Com- mand, Department of the Navy, and is available for use by all Depart- ments and Agencies of the Department of Defense. 1. SCOPE. 1.1 Scope
2、. This specification establishes the requirements for manu- facture and acceptance of the MARK 71 MOD 1 Electric Detonator, re- ferred to herein as the detonator. 2. APPLICABLE DOCUMENTS. 2.1 Government documents. 2.1.1 Specifications and standards. Unless otherwise specified, the following specific
3、ations and standards of the issue listed in that issue of the Department of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation form a part of this specification to the extent specified herein. SPECIFICATIONS FEDERAL QQ-A-1876 Aluminum Foil. UU- T-81 Tags, Shipping a
4、nd Stock. Beneficial comments (recommendations, additions , deletions) and any pertinent data which may be of use in improving this docu- ment should be addressed to: Commanding Officer, Naval Air Engineering Center, Engineering Specifications and Standards Department (ESSD), Code 93, Lakehurst, NJ
5、08733, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document, or by letter. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- 1 MIL-D-52911 33 = 999790b 03611273 7 M I JA - D - 8
6、5 294 (A C ) PPP-B-566 PPP- B - 601 PPP-B-621 PPP-B-676 MILITARY JAN-P-125 MIL-T-18303 STANDARDS FEDERAL FED-STD-102 MILITARY MIL- STD-105 MIL- STD-129 MIL-STD-202 MIL- STD-331 MIL-STD-454 MIL- STD-810 MIL-STD-831 Boxes I Folding I Paperboard. Boxes I Wood I Cleated-plywood . Boxes I Wood Nailed and
7、 Lock-corner. Boxes, Setup. Packaging and Packing for Overseas Shipment - Barrier Materials I Water- proof, Flexible. Test Procedures ; Preproduction, Ac- ceptance, and Life for Aircraft Elec- tronic Equipment I Format for. Preservation I Packaging I and Packing Levels. Sampling Procedures and Table
8、s for Inspection by Attributes. Marking for Shipment and Storage. Test Methods for Electronic and Electrical Component Parts. Fuze and Fuze Components, Environ- mental and Performance Tests for. Standard General Requirements for Electronic Equipment. Environmental Test Methods, Test Reports I Prepar
9、ation of. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-85274 13 M 979990b 0364292 O m MIL-D-85294( AS) MIL-STD-1695 Environments, Working , Minimum Standards for. MIL- STD-45662 Calibration Systems Requirements. (Copies of specifications a
10、nd standards required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer. ) 1 2.1.2 Other Government documents , drawings , and publications. The following other Government documents, drawings
11、, and publications form a part f this specification ,to the extent specified herein. OTHER GOVERNMENT DOCUMENTS CODE OF FEDERAL REGULATIONS (CFR) 49 CFR 171-178 Transportation. (Application for copies should be addressed to the Superintendent of Documents, Government Printing Office , Washington , D
12、. C. 20402. ) DRAWINGS NAVAL ORDNANCE SYSTEMS COMMAND (Code Ident 10001) LD 267058 Test Set, MARK 152 MOD O. LD 486196 LD 486197 Drop Test Fixture. NAVAL AIR SYSTEMS COMMAND (Code Ident 30003) Jolt and Vibration Fixture. DL 3024245 Detonator, Electric, MARK 71 MOD 1. PUBLICATIONS NAVAL ORDNANCE SYST
13、EMS COMMAND (Code Ident 10001) OD-6821 Test Set, MARK 152 MOD O. (Copies of drawings and publications required by manufacturers in con- nection with specific acquisition functions should be obtained from the con- tracting activity or as directed by the contracting officer.) n Provided by IHSNot for
14、ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-8527q 13 m 7779706 03b4273 2 m MIL-D-85294( AS) 2.2 Other publications. The following document forms a part of this The issue of the document specification to the extent specified herein. which is indicated as DoD adopt
15、ed shall be the issue listed in the current DoDISS and the supplement thereto, if applicable. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM E-18 Rockwell Hardness and Rockwell Super- ficial Hardness of Metallic Materials, Test Methods for. (Application for copies of ASTM publications should
16、 be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103. ) 2.3 Order of precedence. In the event of a conflict between the text of this specification and the references cited herein, the text of this specification shall take precedence. 3 e REQUIREME
17、NTS. 3.1 Item description. The detonator contains sensitive explosives which are electrically initiated by the dissipation of energy through a bridgewire. The detonator initiates the explosive train of a safety-arming (S-A) device or fuze of a guided missile. The completely assembled detonator is sh
18、own on Drawing 3024245. The major components and assemblies of the detonator are as follows (see DL 3024245): a. Sleeve (see Drawing 3024249). b. Cup (see Drawing 3024246). c. Bridged plug assembly (see Drawing 3024250). d. e. Ignition assembly (see Drawing 3024247). Plug and lead wire assembly (see
19、 Drawing 3024248). 3 :2 Characteristics. 3.2 1 Performance. 3.2.1.1 Electrical. 3 2.1.1.1 Bridgewire resistance. Prior to shunting the lead wires, the bridgewire resistance between the two lead wires shall be 5.0 12.0 ohms (see 4.8.1.1). 4 Provided by IHSNot for ResaleNo reproduction or networking p
20、ermitted without license from IHS-,-,- MIL-D-85274 13 7797706 03b4274 4 =: MIL-D-85294(AS) 3.2.1.1.2 Insulation resistance. After shunting the lead wires , the in- sulation resistance between the lead wires and the cup shall be 50 megohms (Mohms) minimum when measured under an applied potential of 7
21、50 I75 volts alternating current root-mean-square (Vac rms) (see 4.8.1.2). 3.2.1.2 Function and output. The detonator shall function on the first and only try and the output shall produce an average corrected depth of dent of 0.0125 inch minimum when initiated in accordance with 4.8.2. The depth of
22、any single dent, or the average corrected depth of dent less three standard deviations, shall be 0.010 inch minimum. 3.2.2 Mechanical. 3.2.2.1 Lead wire flexibility. Each lead wire shall be capable of with- standing , without breaking, one set of successive bends in opposite directions of 90, 180, a
23、nd 90 degrees (see 4.8.3.1). 3.2.2.2 Radiographic. The detonator shall meet the following re- quirements when radiographically inspected (see 4.8.3.2) : a. b. C. d. e. f. There shall be no evidence of lead wires contacting the cup or each other within the plug (see Drawing 3024245). The pentaerythri
24、tol tetranitrate (PETN) and the two lead azide charges shall be in accordance with Drawing 3024245, and shall be identifiable and without voids. The lead styphnate flash charge shall be in contact with the lead azide charge (see Drawing 3024245). The ignition charge shall be in contact with the lead
25、 styphnate flash charge (see Drawing 3024245). Cup thickness, plug seating, and wire crimping shall be in accordance with the applicable drawings. There shall be no evidence of metal slivers , wire clippings, voids, or other foreign material. 3.2.2.3 Visual. The detonator shall meet the following re
26、quirements when visually inspected (see 4.8.3.3) : a. There shall be no evidence of external damage, such as buckles, cracks, dents, or other blemishes, which may interfere with functioning or fit at the next assembly. b. The detonator shall be crimped 360 degrees around the plug and shall have a un
27、iform seal around the crimp (see Draw- ing 3024245). 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-8527i 13 7797706 03hY295 h = _ MIL -D -85294 (A S ) c. There shall be no evidence of kinks, nicks, or scratches on the insulated portion of t
28、he lead wires. d. The lead wires shall be positively shorted together (see Draw- ing 3024245). 3.2.3 Environmental. The detonator shall not be damaged nor shall safety or subsequent performance be degraded by exposure to the fol- lowing environments. 3.2.3.1 Transportation vibration - temperature. T
29、he detonator shall not deflagrate, initiate, break, or release any explosive material during exposure to the environment of 4.8.4.1. The detonator shall be safe (see 6.3) and shall meet the requirements of 3.2.1.2 after exposure. 3.2.3.2 Thermal shock. The detonator shall not deflagrate , initiate,
30、The detonator shall be safe (see 6.3) and shall meet. break, or release any explosive material during exposure to the environ- ment of 4.8.4.2. the requirements of 3.2.1.2 after exposure. 3.2.3.3 Temperature and humidity. The detonator shall not deflagrate , initiate, break, or release any explosive
31、 material during exposure to the environment of 4.8.4.3. The detonator shall be safe (see 6.3) and shall meet the requirements of 3.2. i. 2 after exposure. break, or release any explosive material during exposure to the environ- ment of 4.8.4.4. the requirements of 3.2.1.2 after exposure. 3.2.3.4 Ai
32、rcraft vibration. The detonator shall not deflagrate , initiate , The detonator shall be safe (see 6.3) and shall meet 3.2.4 Safety. 3.2.4.1 Bridgewire safety. The detonator shall not initiate when discharge energy from a charged capacitor is applied to the bridgewire (see 4.8.5.1). The detonator sh
33、all not initiate nor release any explo- sive material, and no explosive elements shall initiate during and after exposure to the environment of 4.8.5.2. The detonator shall be safe to handle and dispose of (see 6.3) after exposure. 3.2.4.2 - Jolt. 3.2.4.3 Forty-foot drop. The detonator shall not ini
34、tiate nor release The detonator shall any explosive material , and no explosive elements shall initiate during and after exposure to the environment of 4:8.5.3. be safe to handle and dispose of (see 6.3) after exposure. 3.3 - First article. The contractor shall furnish 300 detonators for first artic
35、le inspection and approval for each contract or purchase order (see 4.3 and 6.2.3). 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-5274 13 777770b 03b4276 - 3.4 Design and construction. 3.4.1 Production drawings. The detonator shall meet all
36、 the require- ments of and be manufactured and assembled in accordance with the drawings and documents listed on DL 3024245. 3.4.2 Standards of manufacture. 3.4.2.1 Assembly conditions. The detonator shall be assembled in a careful, neat, and orderly manner to prevent damage to parts and inclu- sion
37、 of moisture, dust, or other foreign material. 3.4.2.2 Working environment. Unless otherwise specified herein or on the drawings, the working environment shall meet the minimum levels and requirements specified in MIL-STD-1695. 3.4.2.3 Materials. Materials used in the manufacture of the detonator sh
38、all be as specified on the drawings and herein. not change material suppliers during a specified contract unless authorized by the Government. The contractor shall 3.4.2.4 Workmanship. Workmanship shall be in accordance with MIL- STD-454, Requirement 9. 4. QUALITY ASSURANCE PROVISIONS. 4.1 Responsib
39、ility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the perform- ance of all inspection requirements as specifed herein (see 6.2.1). Ex- cept as otherwise specified in the contract or purchase order, the con- tractor may use his own o
40、r any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government (see 6.2-1). The Government reserves the right to perform or witness any of the inspections set forth in the specification where such inspections are deemed neces
41、sary to assure supplies and services conform to prescribed requirements . 4.2. Classification of inspections. The inspections specified herein are classified as follows : a. First article inspections (see 4.3). b. Quality conformance inspections (see 4.4). 4.3 First article. Unless otherwise specifi
42、ed in the contract or pur- chase order, first article inspections shall be performed by the contractor, after award of contract and prior to production. shall be performed on 300 sample detonators which have been produced First article inspections 7 Provided by IHSNot for ResaleNo reproduction or ne
43、tworking permitted without license from IHS-,-,-MIL-D-85294 13 W 999990b 03b11297 T m MIL-D-85294(AS) with equipment, material, and procedures to be used in production (see 3.3). First article approval is valid only on the contract under which it is granted, unless extended by the Government to othe
44、r ccn- tracts. Any production prior to approval of the first article shall be at the risk of the contractor. 4.3.1 First article inspection sequence. The first article of 300 detonators shall be subjected to the inspections of Table I in the se- quence shown. After receipt of first article approval,
45、 first article det- onators shall be disposed of at the discretion of the cognizant demolition officer. 4.3.2 First article acceptance and rejection criteria, The first article shall meet all the requirements specified in the contract or purchase order, on the drawings, and herein. applicable perfor
46、mance requirements of Section 3 shall be met on the first and only trial; one or more failures shall be cause for refusal to grant first article approval. For the inspections of Table I, the 4.4 Qualitv conformance inmections. 4.4.1 Inspection lot . An inspection lot, as defined in MIL-STD-105, shal
47、l consist of completed detonators fabricated under the same conditions and offered for inspection at the same time. In addition, an inspection lot shall include: a, Detonators bearing the same inspection lot number. b. Normal lead styphnate, milled and prepared as specified on Drawing 3024245, from
48、one batch or a blending of batches, resulting in homogeneity of all lead styphnate used in loading the entire lot. c. Lead azide from one batch or a blending of batches, resulting in homogeneity of all lead azide used in loading the entire lot. d. PETN from one batch or a blending of batches, result
49、ing in homogeneity of all PETN used in loading the entire lot. 4.4.1.1 Inspection lot size. Unless otherwise specified in the contract or purchase order, an inspection lot shall consist of not less than 1,000 nor more than 3,000 detonators , including detonators required for de- structive tests (see 6.2. i ). 4.4. i. 2 Inspection lot inspection sequence. After the inspection lot has been formed and identified by l
