1、- MIL-G-230LOA LO m 777770b 04637LI 1 m U MIL-G-23010A (Nep) i3 March i964 SUTBRSEDING MIL-G-23010 (Wep) 21 August i961 / 7 MILITARY SPECIFICATION GUN MECHANISM, 20MM, MARK 11 MOD 5 (ASSEMBLY) 1. SCOPE 1.1 Scope. This specification covers Gun Mechanism, 20Ml1, Mark 11 Mod 5, referred to herein as th
2、e gun mechanism. 2 , APPLICABLE DOCUMENTS 2,l The following documents of the issue in effect on date of invitation for bids form a part of this specification to the extent specified herein, STANDARDS Military MIL-STD-105 MIL-STD-129 MIL=STD- 143 DRAWINGS Bureau of Naval Wea ns (Code Ident 10001 p“ L
3、D 416843 LD 416844 Sampling Procedures and Tables for Inspection by Attributes, Marking for Shipment and Storage. Specifications and Standards, Order of Precedence for Selec- tion of. Container, Shipping and Storage, for 20MM Aircraft Gun Mechanism Mark 11 Mod 5. Container, Shipping and Storage, for
4、 20MM Gun Barrels Mark 19 Mod 1 and Mark 20 Mod 1. Pod, Gun, Mark 4 Mod O (Assembly), Gun Mechanism, 20MM,-Mark 11 Mod 5 (Assembly), Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-230LUA LO W 979970b 04b3785 3 W *-“P - . .h I . -1 I I PUBLICAT
5、IONS LD 522079 LD 615425 LD 615432 982517 982519 i44 196 187 5 673 Military Loader, Gun, 20W, Mark 2 Mod 1. Link, Ammunition, 20MM Mk 6 Mod 4, Kit, Gun Pod Accessories, High Pressure Test Rounds, 20MM, Target Practice Rounds, Zorn, Mark lo5 Mod O. Dummy Round, ZOMM, Mark 104 Mod O. Barrel Test Mount
6、 (for 2OMM Gun Barrels, Mark 19 and Mark 20). Mark 101 Mod 0. Military Handbook HI. Cross-Index of Chemically mui- valent Specifications and Identification Code, Bureau of Naval Wea ons (Code. Ident 10001 P OP 2719 Gun Pod Mark 4 Mod O (with 2OMM Aircraft Gun Mark 11 Mod 51, Description, Operation,
7、and Maintenance. (Copies of documents required by contractors in connec- tion with specific procurement functions should be obtained from the procuring activity or as directed by the contract- ing officer,) 3.1. Preproduction sample. Unless otherwise specified in the contract or order, a preproducti
8、on sample of gun mecha- nisms shall be delivered for testing at a facility designated in the contract or order (see 6.2). The preproduction sample shall be manufactured using the methods proposed for pro- duction. Any production by the supplier prior to approval of the preproduction sample shall be
9、at the suppliers risk. 3.2 Compliance with documents. Unless otherwise speci- fied. the mm mechanism shall be in accordance wkth the requirements specified herein and in the applicable doou- ments listed in section 2. 3.3 Materials, Materials used in the manufacture of the gwi mechanism shall confor
10、m to the material specifications 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-2301OA 10 H 7779706 046378b 5 , in the applicable documents listed in section 2. to the approval of the Government representative, alter- nate materials may be s
11、elected in accordance with Military Handbok Hl in the order of precedence specified in Stand- ard MILSTD-143. Subject 3.4 Des1 . The design of the gun mechanism shall be in the applicable documents listed in section 2, mechanism shall be assembled with the other components of the Mark 4 Mod O Gun Po
12、4 and the gun pod shall be prepared for operation as specified in Publication OP 2719. gun mechanism shall meet the requirements of 3.4.1 through accor e ce with the requirements specified herein and in The gun The 3.4*5. 3,b.i Safety, When the switch controlling the gun pod clearing function is act
13、uated, the gun mechanism shall cycle not fewer than three times in SOO milliseconds, on the first cycle ejecting cartridges or cases at the re- volver eject position into the links in the loader. On subsequent cycles, the remaining cases or rounds shall be ejected From the revolver. 3.4.2 Function,
14、When the switch controlling the gun pod charging function is actuated, the gun mechanism shall cycle, carrying rounds from the ram position to firing position, Any cartridges or cartridge cases at the eject position shall be ejected with a veloolty sufficient to clear incoming links. ated, the gun m
15、echanism shall cycle, fire, and eject service rounds and cases at the rate of 4000 rounds per minute plus or minus 200 rounds per minute, When the gun pod trigger is actu- 3.4.3 Life. 3.4.3.1 Operational life. The gun mechanism shall be capable of cycling, firing, and ejecting l30,OOO service rounds
16、 and empty cases with normal parts replacement and servicing. See Publication OP 2719 for parts replacement schedule. 3.4.3.2 Shock and vibration. When preserved and packaged (see seotion 5), the gun mechanism shall withstand shocks, impacts from accidental dropping, and vibrations of lo= gistic han
17、dling and transportation without damage. 3.4.3.3 Storage life. When preserved and packaged, the gun meohanism shall be capable of storage without deterio- ration for not less than three years, 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-2
18、 3010A 3.4.4 Interchangeability. Gun mechanism parts shall be capable of assembly without selection or fitting at indus- trial facilities and at the fleet level. 3.4.5 Coordination. 3.4.5.1 Service ammunition, The gun mechanism shall cycle, fire, and eject service ammunition and cartridge cases in t
19、he Mark 100 series. 3.4. 5.2 Pod assembl . The gun mechanism shall assemble with the Pod Mark 4 Mod O) without selection or fitting. 3.4.5.3 Loader. The gun mechanism shall assemble with the 20MM Gun Loader Mark 2 Mod 1 without selection or fitting. 3.4.5.4 Components. The pneumatic and electrical c
20、ompo- nents of the gun mechanism shall be capable of nonseleotive connection with those of the Pod Assembly. 3.5 Construction. When assembled with the Government- loaned property of 3.9, the gun mechanism shall withstand the firing of nine High Pressure Test Rounds, 20MM, Mark 101 Mod O. 3.6 Perform
21、ance characteristics. When tested as specified in 4.6.3.3, the gun mechanism shall withstand the firing of the complete contents of four ammunition magazines with- out a stoppage, and shall meet the requirements of 3.4,2. 3.7 Details of components. 3.7.1 Gun barrels. Mark 20 Mod 2 gun barrel intende
22、d for delivery to the Gov- ernment shall withstand the firing of one Target Practice Round, 20MM, Mark 105 Mod O and of one High Pressure Test Round, 20MM, Mark 101 Mod O. After firing, the increase in bore diameter, measured across the lands, shall not exceed 0.004 inch. Ertch Mark i9 Mod 2 gun bar
23、rel and each 3.7.2 Electrical system, There shall be no induced volt- age in the electrical system at any time which could ener- gize firing circuits and accidentally fire ammunition. 3.8 Government-furnished property. The following, in quantities specified in the contract or order, are required 4 P
24、rovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-23010A 10 77777Ob 04b37 7 , MIL-G-230108 to determine compliance of the gun mechanism with the re- quirements of this specification: (a) Target Practice Rounds, 20MM, Mark lo5 Mod O. (b) High Press
25、ure Test Rounds, 20MM, Mark 101 Mod O. Dummy Rounds, 20MM, Mark 104 Mod O. Ammunition Links, Mark 6 Mods 4, 5, and 6. 3.9 Government-loaned Property, The following are re- quired to test the gun mechanism for conformance to the requirements of this specification: Loader, Gun, 20MM, Mark 2 Mod 1. il
26、Pod (for Gun Pod Mark 4 Mod O). (o) Ejector Rack Assembly, Aero 7A-l. (d) Barrel Test Mount (for 20MM Gun Barrels, Mark i9 and Mark20). (e) Kit, Gun Pod Accessorles. 3.10 Temperature extremes, The gun mechanism shall meet the requirements of 3.4.2 at any temperature between minus 65 degrees Fahrenhe
27、it (F,) and plus i65 degrees F. 3.11 Workmanship. nism components and on the assembled gun mechanism shall assure conformance to all of the requirements of this specification. The quality of worhanship on gun mecha- 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise
28、specified in the contract or purchase order, the supplier is responsible for the performance of all inspection re- quirements as specified herein. fied, the supplier may utilize his own facilities or any commeroal laboratory acceptable to the Government. The Government reserves the right to perform
29、any of the in- spections set forth in this specification where such in- spections are deemed necessary to assure that supplies and services conform to prescribed requirements. 4.2 Classification of tests. The inspection and testing of the gwi mechanism shall be classified as follows: lb Acceptance t
30、ests. Except as otherwise speci- Preproduction tests 4.3 Lot._ Lot definition, size, and formation shall be as specified in Standard MIL-STD-105. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-G-230LOA LO W 777770b Oqb3787 O MIL-G-23010A 4.4
31、 Samislina;. Unless otherwise specified herein, the pro- visions set forth in Standard MIL-STD-105 shall govern the establishment of sampling plans and procedures for inspection by attributes. 4.5 Examination. 4.5.1 Components. Prior to assembly of the gun mechanism, it shall be ascertained that all
32、 components procured under separate documents have been inspected, tested, and accepted in accordance with their respective documents. 4.5.2 Packing and marking. It shall be ascertained that packing and marking of the gun mechanism conform to section 5 of this specification. 4.6. Tests. I 4.6.1 Acce
33、ptance tests. Sample gun mechanisms, selected in accordance with 4.4, shall be subjected to the acceptance tests specified herein, except that the tests of 4.6.1.2, 4.6.1.3, and 4.6.1.4 shall be performed on each gun mechanism and on each gun barrel intended for delivery to the Govern- ment. Lot qua
34、lity shall be as specified in 4.6.2. 4.6.1.1 Visual and mechanical inspection. The mechanism shall be tested for conformance to 3.2 and 3.11. 4.6.1.2 Clearing test. The gun mechanism and loader shall be installed in the gun pod as specified in Publication OP 2719. The switch controlling the clearing
35、 function shall be actuated. The gun mechanism shall conform to 3.4.1. 4.6.1.3 Function tests. The gun pod components shall be assembled and prepared for operation as specified in Publi- cation OP 2719, except that the magazine shall be loaded with two belts, each containing i30 links. Each belt sha
36、ll be composed of one empty Mod 5 leading link, followed by 128 Mod 4 lias and one Mod 6 trailing link. The belt intended to be fired through the last fire barrel shall contain tar- get practice rounds. The other belt, begibing approximately at the thirtieth link, shall contain five successive dummy
37、 rounds. All other rounds in the belt shall be target prac- tice rounds. Cycle the gun mechanism and fire the gun pod in three bursts of approximately 86 rounds per burst. at the same time that the gun is charging automatically each time a dummy round is encountered. The gun mechanism shall meet the
38、 requirements of 3.4.2 and 3.4.5.1. Verify Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-2301OA 10 9997906 Oi.163770 7 MIL-G-23010A 4.6.1.4 Gun barrel proof test. gun barrel shall be installed in the barrel test mount (see Each Mark 19 and Ma
39、rk 20 3.9) and shall be tested by firing one target practice round and one high pressure test round. The gun barrels shall meet the requirements of 3.7.1. 4.6.2 Acceptance criteria. Lot quality for the test of 4.6.1.1 shall be judged in accordance with Standard MIL-STD-105, Acceptable Quality Level
40、(AU) 1. O percent defective. Gun barrels failing to meet the requirements of 3.7.1 are defective and shall be removed from the lot. Failure of the gun mechanism to meet the requirements of 3.4.1, 3.4.2, and 3.4.5.1 shall be cause for rejection. The gun mechanism will not be judged defective if it is
41、 verified to the satisfaction of the Government representa- tive that a gun pod stoppage or.other malfunction was caused by a gun pod component other than the gun mechanism under test. 4.6.3 Preproduction tests. The preproduction tests shall include all of the acceptance tests of 4.6.1.1 through 4.6
42、.1.4 and the tests specified herein. 4.6.3.1 Temperature extremes test. Mark 6 ammunition links shall be belted into four belts of 25 links, each composed of one empty Mod 5 leading link, followed by 23 Mod 4 links and one Mod 6 trailing link. Mod 4 links and the trailing link shall be loaded with M
43、ark lo5 target practice rounds. Two belts shall be loaded into the ammunition magazine of a gun pod assembled and prepared for operation in accord- ance with Publication OP 2719. The assembled gun pod shall be temperature-conditioned at minus 65 degrees F. plus 10.0 degrees F. minus 5.0 degrees F. u
44、ntil all components have been thermally stabilized at the specified temperature. The rounds shall be fired in a single burst. After firing, any required gun pod maintenance shall be performed as speci- fied in Publication OP 2719. The two remaining belts shall be loaded into the magazine, and the gu
45、n pod shall be temperature-conditioned at 165 degrees F. plus 5.0 degrees F. minus 10,O degrees F. until all components have been ther- mally stabilized at the specified temperature. The rounds shall. be fired in a single burst. 4.6.3.2 Endurance firing zest. The gun pod components shall be assemble
46、d and prepared for operation as specified in Publication OP 2719. The ammunition magazine shall be completely filled with Mark 6 ammunition links containing Mark lo5 target practice rounds. The gun mechanism shall 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license
47、 from IHS-,-,-MIL-G-i3OLOA LO m 777790b 04b377L 9 l MIL-G-2 3010A be cycled and the rounds shall be fired in bursts of approxi- mately 125 rounds per burst. After the first, second, fourth, and fifth bursts, the assembled gun pod shall be allowed to cool for 3.0 minutes plus or minus i5 seconds. Aft
48、er the third burst, the gun pod shall be allowed to cool until the entire mass of the gun pod has-been stabilized at the ambient temperature of the test facility. After the contents of the ammunition magazine have been completely expended, the gun pod shall again be allowed to cool to the test facil
49、ity am- bient temperature. Any required gun pod maintenance shall be performed as specified in Publication OP 2719. The ammu- nition magazine shall again be refilled and the .test shall be repeated three additional times with oooling times and maintenance as specified herein. 4.6.3.3 Proof firing test. Mark 6 ammunition links shall be belted into two belts of 10 links, each composed of one Mod 3 leading link, followed by eight M
