1、MIL-S-70843 99999Ob L84457b 207 MIL-S-70843 (AR) 11 March 1993 MILITARY SPECIFICATION SOLENOID (FOR MACHINE GUN, 7.62MM: M240) This specification is approved for use by the U.S. Army Armament, Munitions and Chemical Command, and is available for use by all Departments and Agencies of the Department
2、of Defense. 1. SCOPE 1.1 Scope. This specificatioh covers the requirements, examinations and tests for the asseinbly, testing, inspection and packaging for the Solenoid (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specific
3、ations, 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 and Standards. (DODISS) and supplement thereto, cited in the soli
4、citation (see 6.2). SPECIFICATIONS MILITARY MIL-P-116 - Preservation, Methods of MIL-W-13855 - Weapons: Small Arms and Aircraft Armament Subsystems, General Specification for MIL-W-63150 - Weapons and Support Materiel, Standard Quality Assurance Provisions for Beneficial comments (recommendations, a
5、dditions, deletions) and any pertinent data which may be of use in improving this document, should be addressed to: Commander, U.S. Army ARDEC, ATTN: SMCAR-BAC-S, Picatinny Arsenal, New Jersey 07806-5000 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appeari
6、ng at the end of this document or by letter. AMSC N/A FSC 1005 DISTRIBUTION STATEMENT A. Approved for public release; dishibution is uniimited. , Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STANDARDS MILITARY MIL-STD-105 MIL-STD-109 MIL-STD-202 M
7、IL-STD-454 MIL-STD-810 MIL-S-70843 (AR) - Sampling Procedures anc Tes for Inspection by Attributes - Quality Assurance Terms and Definitions - Test Methods for Electronic and Electrical Component Parts - Standard General Requirements for Electronic Equipment - Environmental Test Methods for Aerospac
8、e and Ground Equipment (Unless otherwise indAcated, copies of federal and military specifications, standards, and handbooks are available from the Standardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.1.2 Other Government documents, drawinqs, and publica
9、tions. 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. The following other Government documents, DRAWINGS (see 6.4) US ARMY ARMAMENT RESEARCH, DEVELOPMENT AND ENGINEERING CENTER ( ARDE
10、C 1 12001058 - Solenoid PACKAGING AND MARKING P12 O O 1 O 5 8 - Solenoid 2.2 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 an
11、d regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified in the contract or purchase order, a sample shall be subjected to first article inspection in accordance with the technical provisions herein (see 4.2.1 and 6.2.1). 2 , 1 0 e e Provided by
12、IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I *- MIL-S-70843 (AR) 3.2 Materials and construction. The solenoid and parts shall conform to the materials and construction requirements specified herein, on drawing 12001058 and drawings applicable thereto, and s
13、hall be in accordance with the applicable materials and construction processes of MIL-W-13855. 3.2.1 Dissimilar metals. Except where necessary to complete an electrical circuit, contact between dissimilar metals, as defined in requirement 16 or MIL-STD-454; which would encourage galvanic action, sha
14、ll be avoided. Separation of dissimilar metals shall be accomplished by providing insulation between mating surfaces. 3.3 Desiqn. The solenoids andiparts shall conform to the design specified herein, on drawing 12001058 and drawings thereto, and shall be in accordance with the applicable design prov
15、isions of MIL-W-13855. abili f icat 3.3.1 Interchanseability. To provide for interchange- ty, solenoids fabricated in accbrdance with this speci- ion shall have external dimensions that fall within the envelope outline on drawing 12001058. Electrical connectors, shaft and mounting dimensions and loc
16、ation shall also conform to the detail requirements on drawing 18001058. 3.3.2 Plunser. The plunger shall move through its full range of travel without binding. 3.4 Performance reauirements. 3.4.1 Operation. Each solenoi8 shall operate over a voltage range of 15 to 30 volts direkt current. 3.4.2 Coi
17、l resistance. The col1 resistance shall be 2.30 f 0.14 ohms at 72“ f 5F. 3.4.3 Stroke. The solenoid stroke shall be 0.300 + 0.025 inch. 3.4.4 Duty cycle. The solenoid must be capable of operation for a period of 15 minutes consisting of 30 seconds on and 45 seconds off cycles. 3.4.5 Endurance. The s
18、olenoid shall be capable of being cycled 2 seconds on and 13 seconds off for a total of 40,000 cycles with an applied voltage of 24.0 f 2.0 Volts DC. 3.4.6 Temrserature ranqes. The solenoid must be capable of operation over a temperature range of -65“ f 5F to +160“ f 5F. 3 Provided by IHSNot for Res
19、aleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-70843 (AR) 3.4.7 Storase temperature. The solenoid must be capable of withstanding storage temperatures of -65F to +16OoF. 3.4.8 Temperature rise. The solenoid shall withstand damage when energized continuously against a s
20、tatic load of not less than 30 pounds for 3.5 minutes at a temperature of +160 with an applied voltage of 30 Volts DC. 3.4.9 Waterproofness. The solenoid shall show no evidence of leakage when immersed in water to a depth of 36 inches. 3.4.10 Salt spray. The solenoid shall be capable of operation af
21、ter exposure to a 5% sodium chloride atomized spray for 96 hours minimum. 3.4.11 Random vibration. The solenoid shall be capable of withstanding the random vibration level in the chart below for a period of 80 minutes (including up to 4 resonance dwells for 13 1/3 minutes each) in each of the three
22、mutually perpendicular axes : Acceleration Levei Frequency 0.5 Double Amplitude 5-9.9 HZ 2.5 G 10-180 HZ 2.5 G - 1.5 G 180-500 HZ 3.4.12 Shock. The solenoid shall be capable of with- standing exposure to 40 G peak, 18 ms half sine waveform, 1200 G peak, 0.7 ms half sine waveform, and 700 G peak, 0.7
23、1 ms sawtooth waveform with a velocity change of 10.2 ft/sec in both directions along each of the three mutually perpendicular axes. 3.4.13 Sand and dust. The solenoid shall be operable after 12 hours exposure to dust at velocities up to 2300 * 500 feet per minute. 3.4.14 Funsus. The solenoid materi
24、als and assembly shall be inherently fungus resistant or treated to resist fungus growth except when used within potted or otherwise moisture sealed areas. operation up to 100% relative humidity. 3.4.15 Humiditv. The solenoid shall be capable of 4 0 a a Provided by IHSNot for ResaleNo reproduction o
25、r networking permitted without license from IHS-,-,-MIL-S-70843 9999906 3844580 738 MIL-S-70843 (AR) 3.4.16 Dielectric strensth. There shall be no puncture of solid insulation, no continuing sparkover, no breakdown of the solenoid when tested. 3.4.17 Static force. The solenoid shall meet the static
26、force requirement of drawing 12001058. 3.4.18 Return force. The return force when measured with the plunger fully retracted shall be 7.5 f 0.5 pounds. With the plunger extended to approximately 5% short of the maximum (free) extension, the force measured at this point shall be 5.0 f 0.5 pounds. 3.4.
27、19 Immersion. The solenoid shall show no evidence of leakage when immersed in water to a depth of 36 inches. 3.5 Markinq. Each solenoid shall be clearly marked in accordance with contract, applicable drawings and MIL-W-13855. 3.6 Workmanship. Workmanship shall be in accordance with the workmanship r
28、equirements of MIL-W-63150. In addition, the solenoid shall be free from grease, dust, rust, corrosive products, and other foreign matter. The cleaning method used shall not be injurious to any parts nor shall the parts be con- taminated by the cleaning agent. 4. QUALITY ASSURANCE PROVISIONS 4.1 Res
29、ponsibilitv for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may
30、 use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in this specification where such inspections are deemed necessary to
31、ensure supplies and services conform to prescribed requirements. 4.1.1 ResDonsibilitv for compliance. All items shall meet all requirements of Sections 3 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The abs
32、ence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing operations,
33、 is an acceptable 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-70843 999990b 1844583 b74 MIL-S-70843 (AR) practice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either in
34、dicated or actual, nor does it comit the Government to accept defective material. . 4.1.2 General provisions. Unless otherwise specified herein, the provisions of MIL-W-63150 apply and form a part of this specification. Quality assurance terms and definitions used herein are in accordance with MIL-S
35、TD-109. 4.1.3 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.2). b. Quality conformance inspection (see 4.3). 4.2 First article inspection. 4.2.1 Submission. The contractor shall submit a first article sample
36、as designated by the Contracting Officer for evaluation in accordance with provisions of 4.2.1.2. The first article sample shall consist of the assemblies, components and test specimens listed below in the quantities indicated. Name Drawinq Quantity Solenoid 12001058 10 4.2.2 Tests and inspections t
37、o be Performed. As required by the contract, the first article sample shall be subjected to all of the examinations and tests specified in Table I. As determined by the Government, the first article sample may be subjected to any or all requirements of the applicable drawings. 4.2.3 Rejection. If an
38、y assembly, component or test specimen fails to comply with any of the applicable requirements, the first article sample shall be rejected. The Government reserves the right to termina-te inspection upon any failure of an assembly, componentor test specimen to comply with any of the requirements. 6
39、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-0 Y F F c - W rl di di - W ri di m - X X X X X X X X X X - 5 O c Qi t- u I) U L u U (u a: C .C c .? - - d N di di - ri di m - X X X X X X X X X X - E .r L II L a - MIL-S-70843 (AR) - N N di di - P ri di
40、 m - X X X X X X X X X X - a L L C u- L L L U .r n - - di rl di di - Co rl di 0 - X X X X X X X X X X - (u c ic E k F a L 12 - 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-70443 9999906 1844543 447 m L1 MIL-S-70843 (AR) I. 4.3 Oualitv conf
41、ormance inspection. ” O - 4.3.1 Inspection lot formation. The formation, size, and presentation of inspection lots shall be in accordance with MIL- W-13855. Inspecton lots shall be as large as practicable, in consideration of quality history, manufacturing conditions and contractors/delivery schedul
42、e, but shall not exceed one months production. 4.3.2 Examination for defects. Sample solenoids from each inspection lot shall be subjected to the examinations for defects listed in 4.3.3. 1 Solenoids which fail to meet the specified requirements shall be rejected and removed from the”.lot. A random
43、sample of solenoids shall be selected from the inspection lot in accordance with Special Inspection Levels S-4 (for major defects) and S-2 (for minor defects) of MIL-STD-105 for the examinations for defects listed in 4.3.3. Failure to meet the accept/reject criteria of 4.3.3 shall be cause for rejec
44、tion of the lot. 4.3.2.1 Testinq. Testing shall be as specified in 4.3.3 in the sequence listed. If any solenoid fails to meet the applicable requirements, an investigation shall be made to determine the cause of failure. Unless otherwise specified, solenoids shall be tested at ambient temperature o
45、f 72” f 5OF. 4.3.2.2 Alternative aualitv conformance Drovisions. Unless otherwise specified herein or provided for in the contract, alternative quality conformance procedures, methods or equipment, such as statistical process control, tool control, other types of sampling plans, etc., may be used by
46、 the contractor when they provide, as a minimum, the level of quality assurance required by . the provisions herein. Prior to applying such alternative procedures, methods or equipment, the contractorcn d u -rl a 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license
47、 from IHS-,-,-MIL-S-70843 999990b i844587 O92 . Defect None defined. 4.3.4 Packaainq. Examination of packaging of solenoids shall be F erformed in accordance with the classification of defects and acceptance criteria specified in 4.3.4.1. qccordance with MIL-STD-105, using inspection level I. provis
48、ion shall apply: a. Examination for packaging defects specified in 4.3.4.1 shall apply to each item of the applicable sample of solenoids interior packages or exterior containers, as applicable. 4.3.4.1 Classification of defects for Rackaaing. (Unless otherwise specified in each listed defect, the p
49、ackaging requirements are specified in Section 5.) Sample size shall be in The following Inspection Method Categories Critical Mai or 101. 102. 103. 104. 105. 106. 107. 108. Marking Level of packaging or packing (see procurement documents) Proper cleaning and drying Quantity of desiccant Wrapping and cushioning Closure of interior packages Proper containers Proper closure and strapping of shipping containers 4.3.
