1、MIL-C-81783 13 77777Ob 03b0317 3 MIGC-81983 (AS) 24 September i974 SUPERSEDING AS 1083 15 December 1969 MILITARY SPECIFICATION CARTRIDGE, DELAY, MARK 142 MOD O This specification has been approved by the Naval Air Systems Command, Department of the Navy. 1. SCOPE 1.1 This document governs the manufa
2、cture, assembly, and preparation for delivery of the Mark 142 Mod O delay cartridge and the methods of inspection and tests upon which product acceptance will be based. (See 6.1 .) 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issues in effect on date of invitation for bids or request f
3、or proposals form a part of this specification to the extent specified herein. SPECIFICATIONS Military MIL-P-116 MIL-P-20444 Preservation, Methods of Primer, Percussion, M42, Loading, Assembling and Packing MIL-M-2 13 83 MIL-D-2 1625 MIL-P-22264 Manganese Delay Composition Design and Evaluation of C
4、artridges for Cartridge Actuated Devices Powders, Ignition, Gasless THIS DOCUMENT CONTAlNSldiPAGES I FSC 1377 I . -_ i t Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-81783 13 79777Ob 03b0318 5 W- MIGC- 81983(AS) STANDARDS Military MIL-STD- M
5、IL-STD- 05 Sampling Procedures and Tables for Inspection by Attributes 29 Marking for Shipment and Storage DRAWINGS AND ASSOCIATED LISTS Naval Air Systems Command (Code Ident 30003) DL 25 19943 cartridge, Delay, Mark 142 Mod O, List of Drawings and Specifications DL 2520036 Test Fixture, Cartridge,
6、Delay, Mark 142 Mod O 25 19943 Cartridge, Delay, Mark 142 Mod O Assembly 25 19945 Insert Assembly 2838308 Cartridge Packaging Assembly 2838309 Container, Inner, Assembly Ordnance Corps of the Army. (Code Ident 19203) 8799925 Primer, M42, Assembly and Details PUBLICATIONS Naval Ordnance Systems Comma
7、nd (Code Ident 1 O001 ) OP 5 Ammunition Ashore (This Publication is not furnished to bidders and contractors by the procuring activity. Contractors should contact the Government Inspector for use of the publication.) WR-43A Preparation of Quality Assurance Provisions (Copies of specifications, stand
8、ards, drawings, and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-
9、C-81983 13 79999Ob 03b0319 7 = MIL-C-81983 (AS) 2.2 Other publications. The following document forms a part of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids shall apply. Code of Federal Regulations 49 CFR 171-178 Tra
10、nsportation (Application for copies should be addressed to the Superintendent of Documents, Government Printing Office, Washington, D. C. 20402. Orders for the above publication should request the latest edition and supplements thereto.) 3. REQUIREMENTS 3.1 Generar. 3.1.1 The Mark 142 Mod O delay ca
11、rtridge covered by this specification shall be manufactured in accordance with DL 25 19943 and all documents listed thereon. 3.2 Materials. All materials used in the manufacture of the cartridges shal conform strictly with the specifications referred to on the. respective Naval Air Systems :ommand d
12、rawings unless specific approval in writing covering a departure 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 bidders selections shall be clearly stated in
13、 the proposal. 3.2.1 Preproduction sample. Unless otherwise specified by the procuring activity, a preproduction sample of 82 Mark 142 Mod O delay cartridges shall be manufactured using the same methods and procedures proposed for the production lot. The sample shall be tested as specified in 4.3.2
14、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. 3.3 Primary components. For the purposes of this specification the primer, M42, Drawing 8799925 ; the gasless ignition
15、powder, MIL-P-22264; the delay composition, MIL-M-21383; and the main propellant charge, Drawing 25 19943, are defined as primary components. (See 4.3.3.) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-1783 13 7777706 0360320 3 I MIL-CS1983
16、(AS) 3.4 Primer. The M42 percussion primer used in the Mark 142 Mod O delay cartridge shall be manufactured in accordance with Drawing 8799425, loaded with primer mixture number 793, and accepted in accordance with the requirements of MIL-P-20444. The primers shall be furnished from lots manufacture
17、d within the preceding 12 months. (See 4.7.1 .) 3.4.1 X-ray. Primers shall be free of the following defects when examined by X-ray in accordance with 4.7.2: missing or abnormally thin charge; charge broken, cracked or porous; cracked or off-center anvil, or other misplaced or deformed inert parts; a
18、nvil abnormally close to primer cup dome; and all other observable defects in assembly. 3.5 Propellant charge. 3.5.1 Quantity. All propellant charges shall be as specified on Drawing 25 19943. Charges shall be determined by weight rather than by volume measurements. 3.5.2 Smokeless powder, handling
19、and loading. Do not subject the smokeless powder to unnecessary handling 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. 3.5.3 Smokeless powde
20、r condition. The smokeless powder utilized shall exhibit no evidence of decomposition. (See 4.7.3.) 3.6 Gasless ignition powder. The A-IA gasless ignition powder shall be accepted in accordance with the provisions of MIL-P-22264 and loaded into the cartridge as specified on Drawing 25 19945. 3.7 Man
21、ganese delay composition. The manganese delay composition shall be accepted in accordance with the requirements of MIL-M-21383 and loaded into the cartridge as specified on Drawing 25 19945. 3.8 Cartridge inspection. 3.8.1 Visual inspection. Cartridges shall be free of the following visible defects:
22、 burrs, dents, deep scratches, split or cracked edges, chipping or flaking of the protective finish, sharp edges, defective sealant application around the crimped area; and all other defects Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-which could
23、 conceivably prevent entry into the firing chamber or adversely affect ballistic performance. (See 4.7.4.) 3.8.2 Leakage. Cartridge leakage rate shall not exceed cc of air or gas per second when tested in accordance with 4.7.5. 3.8.3 X-ray. Cartridges shall be free of imperfections in assembly when
24、examined by X-ray in accordance with 4.7.6. 3.8.3.1 Serial number identification. Cartridges shall be legibly identified by serial numbers in accordance with 4.7.6. 3.9 Ballistic requirements. Cartridges from each production lot, selected in accordance with 4.7.7.1, shall meet the requirements liste
25、d below when subjected to the test prescribed in 4.7.7.1. 3.9.1 Delay time. The upper and lower limits of delay time shall be 0.175 second and 0.075 second, respectively. 3.9.2 Velocity. The upper and lower limits of average slug velocity shall be 330 ft/sec and 230 ft/sec, respectively. 3.9.3 Misfi
26、re. There shall be no misfires. (See 4.7.7.2.1.) 3.10 Workmanship. Cartridges 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, coatings, and quality of crimping operations.
27、 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or order, the supplier m
28、ay use his own or any other facilities suitable for the performance of the inspection requirements Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-82783 13 1979706 0360322 7 U MIL-E81983 (AS) specified herein, unless disapproved by the Governm
29、ent. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.2 Sampling. Unless otherwise specified, and when applicable, the sampling plans an
30、d procedures used in the determination of the acceptability of products submitted by a supplier shall be in accordance with the provisions of MIL-STD-105. 4.3 Lots. 4.3.1 Inspection lots. Inspection lot definition, formation, and size shall be in accordance with MILLSTD-105. 4.3.2 Preproduction samp
31、le. Before entering into quantity production, an acceptable preproduction sample of 82 Mark 142 Mod O delay cartridges shall be prepared. Of these cartridges, 72 shall be expended in the tests fisted below and 10 shall be retained for investigative purposes. A preproduction sample acceptable for env
32、ironmental and functional testing shall be defined as a sample which has met the requirements of 3.3 through 3.8 of this specification. Preproduction sample acceptance shall consist of the following tests as prescribed in MIL-D-21625 : 40-foot drop test (6); 28-day temperature and humidity cycling (
33、THC) (18); and vibration (12). The number in parentheses denotes the number of cartridges allocated for test. These cartridges (with exception of the 40-foot drop cartridges), after exposure to environmental treatments, shall be conditioned for a minimum of 6 hours at 70“ _+ 5“ F together with 12 un
34、treated cartridges and fired in the test fixture of 4.7.7.1. In addition, 24 cartridges shall be temperature Conditioned for a minimum of 6 hours (12 at -65“ ? 5“ F and 12 at 160“ f 5“ F) and fired in the test fixture of 4.7.7.1. All cartridges shall fire and produce results within the limits set fo
35、rth in 3.4.1 and 3.9.2 except that the upper limit of delay time shall be 0.250 second for the sample subjected to THC. The failure of any cartridge to meet the acceptance requirements as stated above shall cause rejection of the preproduction sample. Any production prior to acceptanc.e of the prepr
36、oduction sample shall be at the suppliers risk. 4.3.3 Production lot. Unless otherwise specified in the contract, the minimum and maximum production lot size shall be 501 and 1200 cartridges, respectively. Only primary components from a single lot shall be used in a production lot of cartridges; how
37、ever, one primary component production lot may be used in more than one cartridge production lot. 4.4 Gages. The contractor shall provide gages as necessary to insure that the material to which this specification applies will meet the dimensional requirements shown on the applicable drawings. Provid
38、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-BI1783 13 M 7797706 0360323 7 _ MIL-C- 81983 (AS) 4.5 Classification of characteristics. The characteristics verified by the tests and examinations herein are classified as critical, major, or minor in
39、accordance with WR-43A. Tests and examinations 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 an
40、notated with a classification code are classified minor. 4.6 Quality conformance inspection. Quality conformance inspection shall consist of verification of the characteristics classified on the drawings of DL 25 19943 and verification of the following requirements and tests of table I. Item Primary
41、 component Primer Primer Propellant Smokeless powder Ignition powder Delay composition Cartridge Cartridge Cartridge Cartridge Cartridge Cartridge Table I TEST AND REQUIREMENT INDEX Nature of requirement verification Single lot Age, loading and acceptance X-ray Type and weight Condition Loading and
42、acceptance Loading and acceptance Visual inspection Leakage X-ray Serial number identification Ballistic requirements Packaging, packing and container markings Applicable paragraphs 3.3,4.3.3 3.4,4.7.1 3.4.1,4.7.2 3.5.1 3.5.3,4.7.3 3.6 3.7 3.8.1,4.7.4 3.8.2,4.7.5 3.8.3,4.7.6 3.8.3.1,4.7.6 3.9,4.7.7
43、4.6.1 Classifi- cation 4.6.1 Packaging, packing and marking. The packaging and packing of cartridges and the container markings shall be in accordance with section 5. Quality conformance inspection shall be conducted in accordance with the inspection criteria on the applicable drawings referenced in
44、 section 5. 4.7 Tests. 4.7.1 Primer verification. Verification shall be provided that the primers used were manufactured, loaded, and accepted in accordance with the requirements of 3.4. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-81983 LTI
45、 7977906 0360324 O MIL-C-81983 (AS) 4.7.2 Primer X-ray. Exairrine all primers by X-ray and reject those having any of the defects af 3.4.1. Pressure-sensitive tape may be used as air aid ri positioning the primers in suitable grooved racks. For the most revealing exposure, the primers are laid on th
46、eir side with the anvil cutouts vertical. 4.7.3 Smokeless powder condition. Smokeless powder shall be inspected in accordance with the applicable paragraphs of OP 5. Evidence of decomposition shall be cause for rejection. 4.7.4 Visual inspection. Examine all cartridges and reject those having any of
47、 the defects of 3.8.1. 4.7.5 Leakage. Each cartridge in the preproduction sample or production sample shall be leak tested in a dry gas or dry air leak tester. Cartridges which exhibit a leak rate in excess of loM5 cc/sec gas or air at a pressure differential of 1 atmosphere shall be considered defe
48、ctive. Cartridges of the preproduction sample which exhibit a leakage defect shall be rejected. If one or more cartridges of the production sample exhibit a leakage defect, then a 100 percent leak test of the lot being tested shall be required at no additional expense to the government. Cartridges w
49、hich exhibit a leak raQe in excess of that specified above shall be rejected. 4.7.6- X-ray examination. Examine all cartridges by X-ray and any observable imperfections in assembly shall be cause for cartridge rejection. The cartridges shall be positioned on their sides for the most revealing exposure. All cartridges shall be identified with serial numbers prior to X-ray examination. The cartridge serial numbers shall be in conse
