1、MIL-C-7LL28 13 = 0b 057bLOb 7 m MIL-C-71128 (AR) 26 May 1992 MILITARY SPECIFICATION CARTRIDGE, 81MM, PRACTICE, SHORT RANGE M880 LOADING ASSEMBLING AND PACKING This specification is approved for use by the U.S. Army Armament, Munitions and Chemical Command, and is available for use by all Departments
2、 and Agencies of the Department of Defense. 1. SCOPE 1.1 This specification covers the Loading Assembling and Packing for one type of practice mortar cartridge designated as Cartridge, 81mm Practice, Short Range, M880. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standa
3、rds. The following specifications and standards form a part of this specification to the extent specified herein. Jnless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense index of Specifications and Standards (DODISS) and supplement th
4、ereto, cited in the solicitation (see 6.2). SPECIFICATIONS MILITARY MIL-A-48078 - Ammunition, Standard Quality Assurance Provisions, General Specification for Beneficial comments (recommendations, 3dditions, deletions) and any pertinent data which may be of use in improving this document, should be
5、addressed to: Commander U.S. Army ARDECr ATTN: SMCAR-BAC-S, Picatinny Arsenal, New Jersey 07806-5000 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 1315 D?BUnON ST4TEMENT 4, Approved for public
6、 release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-7LL2 13 m 777770b 057bL07 7 m MIL-C-71128 (AR) STANDARDS MILITARY MIL-STD-109 - Quality Assurance Terms and Definitions (Unless otherwise indicated, copies of
7、federal and military specifications, standards and handbooks are available from the Standardization Documents Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.1.2 Other Government documents, drawinqs, and publications. The following other Government documents, drawings an
8、d publications form a part of the specification to the extent specified herein. Unless otherwise specified, the issues shall be those in effect on the date of the solicitation. DRAWINGS (See 6.5) U.S. ARMY ARMAMENT, RESEARCH, DEVELOPMENT AND ENGINEERING CENTER (ARDEC) PRODUCT, PACKAGING AND GAGE DRA
9、WINGS Profile and Alignment Wear Limit Check PA155 for Cartridge, 81MM, Practice, SR, M880 for Cartridge, 81MM,SRM880 M880 w/ Fuze, Practice, M775 6518071 - 6518072 - Alignment Check 6518101 - Profile and Alignment Gage 7257965 12944136 - Packing and Marking for Container Fiber, 12944141 - Packing a
10、nd Marking for Box, Wirebound, 12944202 - Cartridge, 81mm: Practice, Short Range, - (Copies of drawings and publications and other Government documents required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the con
11、tracting officer.) text of this document and the references cited herein, the text of this document shall take precedence. however, supercedes applicable laws and regulations unless a specific exemption has been obtained. 2.2 Order of precedence. In the event of conflict between the Nothing in this
12、document, 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-7LL28 13 99999Ob 057bL08 O m MIL-(2-71128 (AR) 3. REQUIREMENTS 3.1 Material. Materials and parts shall be in accordance with applicable specifications, drawings, and this specification
13、. 3.2 Cartridqe. The cartridge shall comply with all requirements specified on (dwg) 12944202 and associated drawings and with all requirements specified in applicable standards and specifications. 3.3 Detailed cartridqe requirements. The cartridge shall comply with the following requirements: 3.3.1
14、 Profile and alignment. The cartridge shall be properly assembled to successfully pass through a profile and alignment gage. (dwg. 6518101). 3.3.2 Obturator. The obturator shall be present and properly seated flush or below. 3.3.3 Breech Pluq firinq pin position. The firing pin shall be below flush
15、relative to the rear face of the breech plug after assembly against the propelling charge. 3.3.4 Fuze Striker arminq indicator markinq. The red arming indicator marking on the forward section of the fuze striker shall not be visible when the striker is in the safe position and shall be readily visib
16、le when the striker is in the armed position. 3.3.5 Increment pluq. The increment plug shall be able to be easily inserted and be firmly seated in the increment plug hole of the projectile body, and be removable with an outward pull of 14 + 8 pounds on the increment plug pull tab when pulled perFend
17、icular to the projectile body. 3.3.6 Torque. Each cartridge shall meet all torque requirements as specified on the cartridge or subassembly drawing. 3.4 Provinq qround test. The cartridges shall comply with the following requirements when tested in accordance with 4.4.3.1 and 4.5.1. 3.4.1 Misfires.
18、The cartridges shall not fail to fire from the weapon. 3.4.2 Short rounds No cartridges shall have a horizontal range less than 80 percent of the average horizontal range (calculated without the short rounds). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license fro
19、m IHS-,-,-MIL-C-73328 13 9999906 MIL-C-71128 (AR 0576309 2 9 3.4.3 Metal parts separation. There shall be no metal parts separation in the gun bore or in flight. a horizontal range probable error (PEr) less than 10 meters for all zones. The probable error deflection (PEd) shall be less than 10 meter
20、s for all zones. 3.4.4 Ranqe and deflection precision. The cartridge shall have 3.4.5 Duds. The fuze shall function upon ground impact of the cartridge. 3.4.6 Premature burst. There shall be no burst in the gun bore or in the first 15 meters of flight. 3.4.7 Weapon. The cartridge shall not be the ca
21、use of weapon damage e 3.4.8 Fuze siqnature. The fuze when ballistically fired shall provide both a visible and audible signature at a minimum range of 1500 meters from the observer. Onlya visible or only an audible signature only upon impact is not sufficient to meet this requirement. Visual and au
22、dio enhancement equipment shall not be used for this assessment. Visible is defined as flash or smoke or both flash and smoke. 3.5 First article . This specification makes provisions for first article inspection. Requirements for the submission of first article samples by the contractor are specifie
23、d in the contract and by 4.3 herein.(See 6.2) 3.6 Workmanship. All parts and assemblies shall be free from burrs, chips, sharp edges, cracks, unblended radii, surface defects, dirt, grease, rust, porosity, warpage, burn marks, checks, blisters, excess flash, corrosion products and any other foreign
24、matter. Any cleaning method used shall not be injurious to any part nor shall the parts be contaminated by the cleaning agents. Surface coating shall be continuous except for a few slight scratches not exposing base material. The loading and assembly operations shall be performed in a thorough, work
25、manlike manner consistent with the best practices of the industry. All required markings shall be neat and sharply defined. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-71128 (AR) 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for insp
26、ection. 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 use his own or any
27、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 ensure supplies and
28、services conform to prescribed requirements. 4.1.1 Responsibility for compliance. All items must meet all requirements of sections 3 and 5. The inspections set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspecti
29、on 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, is an acceptable pr
30、actice to ascertain conformance to requirements, however this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Governmerit to accept defective material. 4.1.2 General Provisions. The requirements of MIL-A-48078 form a part of the quality a
31、ssurance provisions of this specification. Reference shall be made to MIL-STD-109 to define quality assurance terms used herein. 4.2 Classification of inspection. The following types of inspections shall be conducted on this item. a. First article inspection (see 4.3) b. Quality conformance inspecti
32、on (see 4.4) 4.3 First article inspection. 4.3.1 Submission. The cantractor shall submit a first article sample as designated by the Contracting Officer for evaluation in accordance with provisions of 4.3.2. The first article sample shall consist of the components in the quantities indicated in Tabl
33、e I. 4.3.2 Inspections to be performed. See MIL-A-48078 and Table I specified herein. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-71128 (AR) 4.3.3 Rejection. See MIL-A-48078 and the first article ballistic test shall be rejected if: a. Tw
34、o or more misfires occur. b. Three or more duds occur without any misfires or if two or more duds occur with one misfire c. One or more short rounds occur. d. One or more premature bursts occur. e. One or more metal parts separation occur. f. Range and precision requirements are not met. (70 degrees
35、 F conditioned samples only). 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-7LL28 13 9999706 057bLL2 2 2 O ci u a, P LI) e -4 a, u 4J k m 4J v1 k .ri IL -rl FI *FI LL O i3 I v) 4 a, F c rd o: 4J k O w u o W cn z M N m -3 N N N N -3 -3 -3 -3
36、 -3 d -3 -3 . . . . m d 4 d M m m m m . mln e w-m * mmm Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-71128 13 9999906 057bLL3 4 MIL-C-71128 (AR) 4.4 Quality Conformance inspection 4.4.1 Inspection lot formation. Inspection lots shall comply
37、with the lot formation provisions of MIL-A-48078. In addition, inspection lots of practice cartridges shall contain: a. Projectile body metal parts assemblies of one lot interfix number , from one manufacturer. b. Fin, Tail assemblies of one lot interfix number, from one manufacturer. c. Propelling
38、charges made from not more than one lot of propellant , from one manufacturer. d. Obturating rings of one lot interfix number, from one manufacturer. e. Fuzes of one lot interfix, from one manufacturer. 4.4.2 Examination and tests. a. Classification of characteristics. Quality conformance examinatio
39、ns and tests are specified in the Classification of Characteristics paragraphs. detailed inspection system shall provide assurance of compliance of all characteristics with the applicable drawing and specification requirements utilizing as a minimum the conformance criteria specified herein. Where s
40、pecified herein, attributes sampling inspection shall be conducted in accordance with TABLE II below, using the inspection levels cited in the Classification of Characteristics paragraphs: The contractors quality program or a O . V a a Provided by IHSNot for ResaleNo reproduction or networking permi
41、tted without license from IHS-,-,-MIL-C-71128 13 W 99999Ob 057b114 b MIL-C-71128 (AR) LOT SIZE I 2 to 8 9 to 15 16 to 25 26 to 50 51 to 90 91 to 150 151 to 280 281 to 500 501 to 1200 1201 to 3200 3201 to 10000 10001 to 35000 35001 to 150000 150001 to 500000 500000 and over * * * * * * * * * 1250 125
42、0 1250 1250 1250 1250 II - * * * * * 125 125 125 125 125 125 315 315 500 500 INSPECTION LEVELS V - - III IV - * * * 32 32 32 32 32 80 80 125 125 125 200 200 * 5 13 5 13 5 13 5 13 13 13 13 32 20 32 20 50 20 50 32 50 32 80 50 80 50 125 50 125 50 VI 3 3 3 3 5 5 8 8 13 13 13 13 13 13 13 Numbers under in
43、spection levels indicate sample size; asterisks indicate one hundred percent inspection. size, perform one hundred percent inspection. reject on one or more for all inspection levels. If sample size exceeds lot Accept on zero and b. Alternative inspection provisions. Unless otherwise specified herei
44、n or provided for in the contract, alternative quality conformance procedures, methods or equipment, such as statistical process control, tool control, other types of sampling procedures, etc. may be used by the contractor when they provide, as a minimum, the level of quality assurance required by t
45、he provisions specified herein. Prior to applying such alternative procedures, methods or equipment, the contractor shall describe them in a written proposal submitted to the Government for evaluation (See 6.7). When required, the contractor shall demonstrate that the effectiveness of each proposed
46、alternative(s) is equal to or better than the specified quality assurance provisions herein. dispute as to whether the contractorlls proposed alternative(s) provides equivalent assurance, the provisions of this specification shall apply. specifically incorporated into the contractors quality program
47、 plan or detailed inspection system, as applicable. In cases of All approved alternative provisions shall be 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-71128 13 9999906 0576115 m Z O b V w pc CB z w o z 4 5: p: C E z C c: E C H H I- 5 E
48、d d.4 m mrn 4dt-l 4 rl t-l 44 t-l 7lw mmm m m m mm m mm . . . * b *e . HHH H H H HH HHH H H H HH HHH H H H Hr( k 4 -d O 7Q)a E a O O% k F c -4 vi E ici c om a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-(u O rl LL !i I vl J c u a a, k m h Fi 7 nl
49、 rl Ir; ?* MIL-C-7LL28 13 = 999990b 057bLLb T HHci H HHHH HHH H HHHH HHH H HHHH a a, c -FI Iu Qi a a, c O z c k -li a, E ci a, -rl rl -FI c, EmCImaQ) E O k 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-N iL O N k I v) . tri J9 2d =pc MIL-C-71128 13 m 9999906 0576337 1 m 3+3 3+3 12 Provided by
