1、i IaL-C-81805.(AS ) U, December- 1970 Superseding AS-i077 MILITARY SPEC1 FICATIOM CARTRIDGE, IMPULSE, MARK 125 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 manufacture, assembly and preparation for deliver
2、y of the MARK 125 MOD O impulse cartridge and the methods of inspection and tests upon which product acceptance will be based. 2. APPLICABLE DOCUME3TS 2.1 The following specirications, standards, drawings, and publications, of the issue in effect on date of invitation for bids, form a part or this d
3、ocument to the extent specified herein. SPECIFICATIONS Mili ta-m MIL-P-116 MI L-D-21625 MI L-D -81 303 Preservation, Methods of Design and Evaluation of Cartxidges for Cartridge Actuated Devices Design and Evaluation of Cartridges for Stores Suspension Quipment Naval Air Systems Command (Code Ident
4、30003) AS-1075 Ignition Element, Electrical, MARK 14 MOD O Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-bIIL-CB1805 (AS) STANDARDS Military EEL-STD-105 rnL-STD-l2g MIL-STD-4i4 Sampling Procedures and Tables for Inspecttion by Attributes Marking fo
5、r Shipment and Storage Sampling Procedures and Tables for Inspection by Variables for Percent DeTective DRAWINGS AND ASSOCIATED LISTS Haval Air Systems Comand (Code Ident 30003) DL 2520046 DL 283e200 2520046 2838200 2838210 2838211 PUBU CATIOhS Bureau cf Naval Weapons op 5 2 Ignition Element, Electr
6、ical, NARK i4 MOD O Cartridge, Impulse, MARK 125 IOD O Ignition Element, Electrical, MARK 14 MOD O, Assembly Cartridge, Impulse, MARK 125 KOD O, Assembly Cartridge, Impulse, MARK 125 MOD O, Packaging Assembly Container, Inner, Assembly (Code I den% 10001 ) Ammunition Ashore (This publication is not
7、furnished to bidders and contractors by the prccurinp activity. . Contractors should contact the Government Inspector for use of the publication. ) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-kl-43 Preparation of Quality Assurance Provisions ( CU
8、pies of specifications, standards, 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. ) 2.2 Other publications. Tlie following document forms a part of this spe
9、cification. Unless otherwise indicated, the issue in effect on date of invitation for bids shall apply. CODE OF FEDERAL REGULATIONS 49 cm 171-178 Transportation, and the main propellant charge, Drawing 2838200; are defined as primry ccxponents . See 4.3.3. 3.3.1 Ignition element- The MARK 14 MOD O e
10、lectrical ignition element used in the MARK 125 MOD O impulse cartridge shall be manu- factured in accordance with the drawings listed on DL 2520046 and shall meet the applicable requirements of AS-3-075. The ignition elements shall be from lots manufactured within the preceding 12 mnths. See 4.7.i.
11、 3.3.2 Propellant charge. 3.3.2.1 Quantit . All propellant charges shall be as specified on Drawing 283 + 200 Charges shall be determined by weight rather than by volume measurements. 3.3.2.2 Smokeless powder, handling and loading. Do not subject sniokeless powder to unnecessary handling or exposure
12、 to the atmosphere. The handling and loading of smokeless powder exposed to the atmosphere shall be perfomed only under conditions that do not permit the relative humiity to exceed 75 percent. 3.3.2.3 Smokeless powder, condition. The smokeless powder utilized 3.4 Cartridge inspection. 3.4.1 Visual i
13、nspection. Cartridges shall be free of the following shall exhibit no evidence of decomposition. See 4.7.2. visible deyects: burrs, dents, deep scratches, split or cracked crimp, defective sealant application around crimp, chipped surfaces, or other defects which may prevent entry of the cartridge i
14、nto the firing chamber, or affect the stability or resistance of the cartridge to misture. See 4.7.k. 3.4.2 Erige circuit resistance. The resistance of the bridge circuit in each completely assembled cartridge, when measured electrically as specified in 4.7.3, shall be not less than 1.0 ohm nor more
15、 than 1.2 ohms. 3.4.3 Leakage. Cartridge leakage rate shall not exceed lo- cc of air or gas per second when tested in accordance with 4.7.5. 3.5 No-fire. Each cartridge of the preproduction sample and each cartridge of the production lot ballistic and cartridge integrity samples shall meet the no-fi
16、re requirements of 4.8. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-C-81805 (AS ) 3.6 Tallistic requirements. Cartridges fwm each production lot, selecter! in acccrdance with 4.9.1, shall meet the requirements listed belov when subJzcted to
17、 the test prescribed in 11.9.2. 3.6.1 Velocity. The lower limit (L) of velocity shall be 16 ftisec. See k .9.2 .i . 3.6.2 Misfire. There shall be no misfires. See 4.9.2.1.2. 3.6.3 Hangfire. There shall be no hangfires, See 4.9.2.1.3. 3.6.4 Propellant gas leakage. There shall be no propellant gas lea
18、kage. See 4.9.2.1.4. 3.7 Cartridge integrity. Cartridges froin each production lot, selected in accordance with k.9.1, shall exhibit no evidence of propellant gas leakage when subjected to the test of 4.9.3. 3.8 Change in propellant lot. Whenever a change occurs in the propellant lot, test firings s
19、hall be conducted in accordance with 4.11. Eo cartridge sball produce results cutside the velocity limit of 3.6.1 and no cartridge shall fail to meet the requirements of 3.6.2 through 3.6.4. 3.9 Packaging, packing and markin$. Tie packaging and packing cf cartridges and the container markings shall
20、be in accordance with Section 5. see 4.6.1. 3.10 Workmanship. Cartridges shall be constructed and finished in a manner to assure coapliance with all requirements of this specifi- cation an vibration (12); 15 “g“ shock (12); 40-foot drop (6); +7O0F (12) -65 F (12); +200F (12). on temperatures shall b
21、e f 5 F. Temperature conditioning prior to firing shall be for a minimum period of six hours. The numbers in parentheses denote the number of firings allocated for test, using two cartridges for each firing, except for the 40-foot drop which is a non- firing test. ejector rack as specified in 4.9.2.
22、 No cartridge shall produce results outside the velocity limit of 3.6.1 and no cartridge shall fail to meet the requirements of 3.6.2 through 3.6.4. Of the remaining cartridges, 20 shall be subjected to the cartridge integrity test of 4.9.3. The failure of any cartridge to meet the requirements as s
23、tated above shall cause rejection of the preproduction sample. Tolerance . The above cartridge firings shall be conducted in an Aero 7A 4.3.3 Production lot. Unless otherwise specified in the contract; the cartridge producticn lot size shall be 5000 minimum. -Only primary components from a single lo
24、t shall be used in a production lot of car- triages; however, one primary component production lot may be used in more than one cartridge production lot. 4.4 Gsges. The contractor shall provide gages as necessary to insure that the material to which this specification applies will meet the dimension
25、al requirements shown on the applicable drawings. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-81805 13 7777706 0360001 - 7 W MiL-C-glEI05 (AS) 11.5 Classification of characteristics. The characteristics verified by the tests anci exaxinat
26、ions herein are classified as Critical, Major cr VLnor in accordance with WR-43. Tests and examinations that verify critical characteristics are identified by the symbol (C) and major characteristics by the symbol (M). The number following the classifi- caticjn symbol indicates the serial number of
27、test or examination. Tests and examinations which are not annotated with a classification code are classified minor, 4.6 Quality confomnce inspection. Qwtliity conformance inspection shall consist of verification of the characteristics classifie6 on the drawings of DL 2338200 and verification of the
28、 following requirements. and tests: Item - Primary component Ignition element Propellant charge Smokeless powder Cartridge Cartridge Carbridge Cartridge Cartrige Cartridge . Cartridge Cartridge Cartridge Nature of Requi renient Verification Single lot Age and acceptance Type and weight Condition Vis
29、ual inspection Brige circuit resistance Leakage Pio- fi re Balli stics Propellant gas leakage Cartridge integritv Ijaiictics (change in prope.lant io t ) Packaging, packing and container markings Applicable Paragraphs 3.3, 4.3.3 3.3.1, 4.7.1 3.3.2.3, 4.7.2 3.4.1, 4.7.4 3.3.2.1 3.4.2, 4.7.3 3.k.3, 4.
30、7.5 3.5, 4.8 3.?, 4.9.2 3.6.4, 4.9.2.1.4 3.7, 4.993 3.8, 4.11 Clas si f i- cation ( I*m- 4 3) 4.6.1 Packine, packaging and iiiarking . Guai.ity conformance inspection shall be conducted in Rccordace with the inspection criteria on the applicable drawings referenced in Section 5. 4.7 Tests. - 4.7.1 I
31、gniticn element, verification. Verification shall be pro- vided that the ignition elements used were manufactured within the preceding 12 months and met tine requirements of AC-1075. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - - 71 .- - MIL-C-
32、BLOS 13 m 7777706 0360002 O m 3 - - - - - _- - _. 4 MIL-+ .? .3 and 10 shall be retained for investigative purposes. In ,?I Of -, 4.9.2 3allistic test. - After all cartridges of the sample under test have met the no-fire requirements of 4.8, the sample cartriCges shall be reconditioned for a minimum
33、 of six hours at +TO0 k 5OF anti then fired in an Aero YA ejector rack, mounted horizontally, ejecting a 500-pound inert store. through a parallel circuit to the two cartridges, Instrumentation shall be provided to measure time from actuation of the firing circuit to first indication of store moveme
34、nt, or rack hook opening, and to measure store velocity for the first six-inch interval from end of ejector.stroke. The firing current shall be 10.0 k 0.2 amperes, applied 4.9.2.1 Criteria of acceptabilitx. L. I , 4.9.2.1.1 Store velocit The lower (L) limit of store velocity shall be acceptable if t
35、he quantity (x-L)/s is equal to or greater than the appropriate value 02 k, at an AQL of 0.10, when computed in accordance with MIL-STD-414, Psrt I, Table B-l. shall be as specified +i m 3 . With respect to store velocity, the ot . 4.9.2.1.2 Misfire. The failure of any cartridge to fire shall result
36、 in rejection of the lot represented, unless such failure is plainly attributable to faulty test equipment or procedure. b .9.2 J.3 Hangfire, One or more hangfires shall result in rejection of the lot represented. elapsed time between actuation of the firing mechanism and first store movement or hoo
37、k opening exceeds .O25 second. A hangfire is defined as a firing in which the -9 4.9.2 .i .4 Propellant gas leakage. Evidence of propellant gas leakage by one or more cartridges, when examined in accordance with 4.9.3.1, shall cause rejection of the lot represented. 1 ;4 Provided by IHSNot for Resal
38、eNo reproduction or networking permitted without license from IHS-,-,-k.9.3 Cartridge integrity test. A sample of 20 cartridges from each production lot and 20 cartridges from the preproduction sample shall be fired to test the ability of the cartridges to contain the propellant gases. the cartridge
39、s shall be conditioned at +TO0 -4 5OF for a minimum perioo of six hours and fired in a closed test chamber. The test chamber shall have an internal volume, with a fired cartridge in place, of 2.00 f .O5 cubic inches, and the capability of withstanding an internal pressure of 30,500 pounds per square
40、 inch, minimum. After having met the no-fire requirements of 4.8, 4.9.3.1 Criteria of acceptability. After firing, the ignition element end of each cartridge of the preproduction sample and each cartridge of the production lot ballistic and cartridge integrity samples shall be examined for evidence
41、of propellant gas leakage through or around the igiition element. If one or more cartridges of the pre- pmduction sample exhibit evidence of propellant gas leakage or fail to fire, the preproduction sample shall be rejected. If one or more cartridges of the production lot samples (ballistic or cartr
42、idge integrity) exhibit evidence of propellant gas leakage or fail to fire, the production lot shall be-rejected. 4 ,lo Retest. There shall be no retests 4.10.1 Test failure. If test failure is attributable to an assignable cause, excluding the test cartridges, the original test results shouid be di
43、scarded and that portion of the test reconducted. 4.11 Change in propellant lot. Whenever a change in propellant lot occurs, the charge weight shall be verified by firing 36 cartridges which havebeen temperature conditioned for a minimum of six hours (12 at -65O f 5OF, 12 at +TO0 f 5OF and 12 at +2
44、f 5OF). firings shall meet the requirements of 3.8. Recuits of these 5. PREPARATION FOR DEUVERY 5.1 Preservation and packaging. For definitions of packaging levels, see 6.4. 5.1.1 Level A. all production lots for service use. in an inner container in accordance with D-%wing 2838211. Level A packagin
45、g shall be used for packaging of Sixty cartridges shall be packaged 5.1.2 Level B. Not applicable. 10 , Y e- . -. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-81805 (AS) 5.1.3 Level C. When directed by the procuring activity, those cartridge
46、s which are intended for expenditure in preproduction sample testing and for production lot acceptance tests shall be packaged in accordance with Method III of MIL-P- and with the Code of Federal Regulations 49 CFR 1; 1-3.78. 5.2 Packin1-1(8* Shipping containers shall be in accordance with 5.3 Marki
47、ngs. 5.3.1 Special markings. Marking of exterior containers shall be in accordance with the Code of Feeral Regulations 49 CFR lr(l-l(6. 5.3.2 Ilormal markings. Unless otherwise specified in the contract or order, the marking information on unit packages and shipping containers shall be as specified
48、on Drawings 2838211 and 2838210, respectively. The specified marking information shall be applied to the containers in accorance with the applicable provisions of MIL-STD-w. 6. NOTES 6.1 Intended use. The MARK 125 MOD O impulse cartridge was originally iiesigned to eject stores from aircraft. 6.2 Or
49、dering information. Procurement documents should specify the following: a. b . title, number and date of this specification; whether preproduction inspection is required and, if so, specify the test activity; 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-81805 (AS) c. production lot size and test activity ( see 4.3.3);
