1、I MIL-A-45741 LO 777770b 0307473 4 MIL-A-4 5941 (WC ) 7 December 1971 SUPLERSEDING (See Section 6) MILITARY SPECIFICATION ARMAMENT SUBSYSTEM, HELICOFTER, 7.624 MACHINE GUN: DOOR MOUNTED, LIGHT WEIGHT, M23 (Less M60D Machine Gun) 1. SCOPE 1.1 This specification covers one type llght weight armament s
2、ub- system providing tilo pintle mounted 7.62mm, 60 machine guns for right hand and left hand door installation on UH-ID type helicopter. 2. APPLICABLE DOCUMENTS 2.1 The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of the speci- fica
3、tion to the extent specified herein. SPECIFICATIONS Military 1p-116 MIL-I- 6866 MIL-I- 6868 MIL-W- 8604 MIL-w-8611 MIL-W- 1385 5 MIL-I-45607 Preservation, Methods of. Inepection, Penetrant Method of. Inspection Process, Magnetic Particle. Welding of Aluminum Alloys; Process for. Welding, Metal Arc a
4、nd Gas, Steel, and Corrosion and Heat Resistant Alloys; Frocess for. Weapons, Small Arms and Aircraft Armament Subsystems, General Specification for, Inspection Equipment, Acquisition, Main- tenance and Disposition of. STANDARDS Military MIL-STD-105 - Sampling Procedures and Tables for In- MIL-STD-1
5、09 - Quality Assurance Terms and Definitions. MIL-STD-I261 - Welding Procedures for Constructional spection by Attributes. Steels. A Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DRAWINGS U.S. Army Weapons Command DI1699747 - .Armament Subsystem, H
6、elicopter, 7.62mm kchine Gun: Door Mounted, Light Weight, M23 1110131.66 - Index of Inspection Equipment Lists (Product drawings referenced in this specification are specified on Drawing Dii699747 and related assembly drawings ; acceptance inspection equipment drawings form a part of Drawing IEL1169
7、9747. ) PUBLICATIONS U.S. Army Weapons Command P8428049 - Packaging Data Sheet for Armament Subsystem, Helicopter: M23 (Copies of specifications, standards, drawings , and publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activ
8、ity or as directed by the contracting officer. ) 3.1 First article, Requirement for submission of the first article Unless otherwise speci- shall be as 8 ecified in the contract (see 6.1). fied (see 6.17, first article shall include the pilot pack (see 5.1). 3.2 Materials and construction. The armam
9、ent subsystem and parts shall conform to the miterials and construction requirements specified herein, on Drawing Dl1699747 and drawings applicable thereto, and shall be in accordance with the applicable materials and construction provisions , of MIL-W-13855. 3.3 Design. The armament subsystem and p
10、arts shall conform to the - design specified herein, on Drawing Di1699747 and drawings applicable thereto, and shall be in accordance with the applicable design provisions of MILW-13855. 3.3.1 Welding. 3.3.1.1 Certification of welding, Unless otherwise specified (see 6.1), prior to production of any
11、 weldments, the contractor or manufacturer shall have Government approval of welding procedures and test specimens. ance with the applicable drawing and as specified herein. Welding of parts and subassenblies shall be in accord- -st 2 Provided by IHSNot for ResaleNo reproduction or networking permit
12、ted without license from IHS-,-,-MIL- A- 4 5 941 ( WC ) 3.3.1.2 Welded Joints. All welded joints of parts and subassemblies shall be sound and free from cracks. particle inspected in accordance with MIL-1-6868 and penetrant inspected in accordance with MIL-1-6866 as applicable. 3.3.2 Pintle and pint
13、le post assembly. 3.3.2.1 Pintle. Welded joints shall be magnetic The pintle shaU assemble in the pintle post and be retained in the pintle post by ballbearings. rotate throughout its full range of travel without binding. The pintle shall 3.3.2.2 Pintle post. The pintle post shall assemble in the ba
14、se mount assembly for either right or left side door mounting, and be securely attached so that there shall be no relative movement. of the pintle post assembly shall be in accordance with m-w-8611. Welding 3.3.3 Ammunition box and cover assembly. The ammunition box shall readily assemble to and dis
15、assemble from the ammunition box brackets on the base mount assembly, and when assembled shall be securely retained in place by the latches. The cover assembly shall readily assemble to the ammunition box and the latches be snapped securely in place so that there be no relative movement and can be m
16、anually removed by hand pressure, 3.3.4 Empty cartridge bag. The empty cartridge bag shall be capable of being retained and removed from the cartridge bag frame assembly. 3.3.5 Empty cartridge bag frame assembly. The empty cartridge bag frame assembly shall be capable of being attached to and remove
17、d from the weapon. without binding, and when released is returned to its original position by spring action. ance with MIL-STD-1261. The latch shall move freely through its 111 range of travel Welding of the cartridge bag frame shall be in accord- 3.3.6 Ammunition chute and brace assembly. The ammun
18、ition chute with the brace assembly shall chute linked ammunition from the ammunition box to the weapon, and shall be capable of being manually assernbled to and disassembled fromthe ammunition box and the weapon by the end fittings. 3.3.7 Base mount assembly. The base mount assembly shall be capabl
19、e of being assembled with pintle post, ammunition box, and forward and aft beam for either right or left door mounting. shall be in accordance with MIL-W-8604. Welding of the base mount 3.3.8 Endurance, The armament subsystem shall have a 90% probability of firing 10,000 rounds, and withstanding 100
20、 cycles of rough handling with- out malfunctions, unserviceable parts or cracking of welded joints with a 10% confidence level. Testing shall be as specified in 4.4.2.3 and 4.6.1. A m groups of parts fromthe second armament subsystem shall be taken in order and placed in trays 2,3, and 1; groups of
21、parts from the third armament subsystem shall be taken in order and placed in trays 3, 1, and 2, Commercial parts such as screws, spring pins, etc., shall be placed in the same tray as their mating or associate part. Any comercial part tendered unserviceable by disassembly shall be replaced without
22、penalty to the interchangeability test, assembled using only those parts which are in the same tray. The armament subsystems shall be re- Groups of non-mating parts Group I Base assembly, mount (11699733) Setscrew (11699670) - . Spacer, sleeve (11699725) Group III Beam, ar(W9728) Group II Cradle, st
23、owage (11699722) Nut, pintle post (11699724) Pintle, gun mount (11699721) Beam, forward (11699727) Post subasse&ly, pintle (11699806) 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-45941 (WC) 4.6 3 Packaging tests. 4.6.3.1 Determination of
24、cleanliness. The surfaces of each sample unit shall be subjected to the determination of cleanliness test specified in m-p-116, except that the wipe test shall not be applicable to parts with black oxide or anodized protective coatings. be subjected to the heat-sealed seam test specified in MIL-P-.
25、4.6.3.2 Heat-sealed seam. The sample level A unit packages shall 4.6.3.3 Vacuum retention, A sufficient vacuum shall be drawn to cause the flexible barrier of level A unit packages to cling snugly to the enclosed item. Care shall be exercised to insure that an excessive amount of vacuum is not appli
26、ed which might cause puncture or rupture of the barrier. 4.6.3.3.1 Interpretation of results. After remaining undisturbed at room temperature for 4x0 hours, the barrier shall be examined to determine whether it is still taut and retracts against the item when drawn away and quickly released. 5. PREP
27、ARATION FOR DELIVERY 5.1 Blot pack. A pilot pack consisting of complete and packed unit, packaged and packed in accordance with Packaging Data Sheet Pa28049 to the level of protection specified in the contract (see 6.1) and forwarded as specified in 3.1. 5.2 Preservation, packaging, packing and mark
28、ing. Thd armament subsystem with equipment shall be preserved, unit packaged, packed and marked ih accordance with the requirements of Packaging Data Sheet P8428049 for the levei of protection specified (see 6.1). 5.3 Repair parts. Repair parts shall be prepared for delivery in .accordance with the
29、applicable packaging data sheets specified in the contract (see 6. i). 6. NOTES 6* 1 Ordering data. Procurement documents should specify the following : 12 a. Title, number, and date of this specification. b. c. d. Lists of drawings and specifications pertinent to the armament subsystem, showing app
30、licable revision dates. inspection criteria for components (see 4.4.2.1). Index to inspection equipment list pertinent to the armament subsystem showing applicable revision dates. . .- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-r MIL-A-LI5741 LO
31、 111 9979706 0307LI5 O E e. f. g. h. i. J. k. 1. i. m. n. Q. P. 9. MIL-A- 4 5 94 1(WC ) Number of first article samples required (see 3.1). That packages opened fo? examination shall be repackaged by the contractor at the contractors expense. Disposition of endurance- tested mounts (see 4.5.9.6). Sh
32、ipping instructions for first article and pilot pack if different (see 3.1 and 5.1). Selection of applicable levels of preservation, packaging, and packing (see 5.1 and 5.2). Packaging instructions for repair parts (see 5.3). Piace of finai inspection and acceptance (see “Notes“ in List of acceptanc
33、e inspection equipment to be furnished the contractor and responsibilities for other Government property to be furnished the contractor (see 4.5 and 6.8). Responsibilities for furnishing amnition, links and machinegun (see 4.6. i). Certification of welding procedures and test specimens if different
34、(see 3.3.1). Procedures and methods for demilitarizing and disposing of rejected material. Disposition of Government furnished property. Responsibility for test firing facilities and operating procedures (see 6.2). MIL-W-13855). 6.2 Test firing facilities and operating procedures shall be designed b
35、y the contractor in conformance with local, state, and federal regulations and suitable for carrying out prescribed firing tests with safety of operating and visiting personnel. Copies of these contractor designs shall be forwarded to the contracting officer. Goverment facilities may be viewed upon
36、application ta the contracting officer . 6.3 When action by a testing agency is required, work programing 6.4 To avoid delay in test firing, the contractor should maintain will be effected with the testing agency at the earliest practicable date. a minimum of two months supply of ammunition as deter
37、mined by anticipated firing requiremnts. 6.5 Contract data requirements. Wnthly reports of the results of final examination, endurance test and interchangeability tests shall be specified for delivery on the DD Form 1423 included in the contract. 6.6 Supersession data, This specification includes th
38、e require- ments of Springfield Armory Purchase Description SAPD-284A9 dated 6 August 1.965. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-6.7 When warranted, the contract should specify the application of MIL-Q-9858 or MIL-1-45208, as appropriate,
39、 on the knagement Control Systems Summary List, DD Form 1660. 6.8 Unless otherwise specified (see 6.1 i), the contract should specify the application of MIL-1-45607 and MIL-C-45662 on the Management Control Suwnary List, DD Form 1660. Custodians: Army - wc Preparing activity: Army - wc Project numbe
40、r: 1005-Ak23 14 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-t MIL-A-45941 10 9999906 0309487 4 MIL-A-4 5941 (WC ) Q - + I . 3 - L t T 1 “1 IL W a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI
41、L-A-45741 LO 7777906 0309488 b I l.6 I I I LL W O t Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-45741 10 = 777770b 0307487 = 1 -.I I- LL O O I- LL n I- I- a W (3 v) a - )1 W o U IL 3 v) I w o 2 c W (3 2 MIL-A-45941 (we) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ia Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
