1、MIL-C-4b272A 33 7777906 0330583 5 m 8 MIL-C-46272A (MU) 9 January 1974 SUPERSEDING MIL-C-46272 (ORD) 30 May 1965 - MILITARY SPECIFICATION CARTRIDGE, DELAY, M46 ASSEMBLY This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 This specificatio
2、n covers Cartridge, Relay, M46 Assembly for use with propellant actuated devices in aircrew emergency escape systems. 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 this specification to the extent spe
3、cified herein: SPECIFICATIONS MIL-A-25 5 O MIL-B-550 MIL-B-51092 MIL-C-60539 MIL-E-5272 MIL-P-46994 STANDARDS E.IITA-STI)-1O5 MIL-STD-109 Ammunition and Special Weapons, General Barium Chromate Boron, Amorphous Powder Coating, Anodic, Conventional for Aluminum Environmental Testing, Aeronautical and
4、 Specification for and Aluminum Alloy Associated Equipment, General Specification for Pellets, Boron, Potassium Nitrate SamnJinr: Procedures and Tables for Inspection Inspection Terms and Definitions by Attributes MIL- STD-4 13 MS-28741 - Visual Inspection Guide for Rubber O Rings - Hose Assembly, D
5、etachable End Fitting, Medium Pressure FSC 1377 / - _ - -_ THIS DOCUMENT. CONTAI NSI .%PAGES Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-4627 2A (MU) 2.1 (Contd) DRAVINGS Armament Command D8594075 - Car ridge , Delay, 5146 Assembly Dl173053
6、6 C8845190 C8845191 C9227731 IEL-8594075 - Delay Element, Delay 2 Seconds, Assembly - Carton, Packing, Ammunition for Cartridge, - Box, Packing, Ammunition for Cartridge, Delay, - Alternative, Carton, Packing for Cartridge, - Inspection Equipment List for Cartrid,e, Delay, M46 H4 6 Delay ,M46 Delay,
7、 M46 (Copies of specifications, standards, drawings and publications required by suppliers in connnection with specific procurement functions should be obtained from the procuring activity as directed by the contracting officer.) 2.2 Xgrblicatio.-The following document forms a part of this specifica
8、tion to the extent specified herein. the issue in effect on date of invitation for bid or request for proposal shall apply. Unless otherwise indicated, AHSI 46.1 - Surface Texture (Application for copies should be addressed to the American National Standards institute (AXSI) , 1430 Broadway, New Yor
9、k, NY 10018.) 3. REQUIREhfISNTS 3.1 utilizing the same cartridges. The cartridge shall be disassembled in such a manner that determination can be made that the sealant has been applied for the full length of 360 of the joining surfaces at the junction of the “O“ ring and case sidewall and that the p
10、ropellant cavity is free of sealant, Failure of any cartridge to comply with 4.4.3.7 Government : Functional.-The following tests shall be performed by the - 484.3,7.1 Ballistics.-The 30 test delay elements, prior to cartridge assembly, shall be temperature conditioned as indicated in Table VI1 and
11、4-4.3.7.1.3. of 3.7.2, (Table I), shall be cause for lot rejection. Failure of any delay element to comply with the requirements -. TABLE VI1 Delay Element Assembly Temperature -65% to -70F 65F to 75OF 160F to 165F Sample Size 10 10 10 4.4.3.7.1,l A sample of 30 assembled cartridges from each produc
12、tion lot shall be ballistically tested after temperature conditioning in accordance with Table VIII and 4.4,3.7.1.4. Failure of any cartridge to comply with the requirements of 3.7.4, (Table II), shall be cause for rejection of the lot. TABLE VIII Cartridge Assembly Temperature Degree (O) Fahrenheit
13、 (O) Sample -65 to -70 65O to 75 160 to 165 10 10 10 4.4.3.7,1.2 Ballistics.-The sample of delay elements and cartridges for ballistics tests shall be grouped and temperature conditioned in acccordance with 4.4.3.7.1.3, 4.4.3.7.1.4, Table VI1 and Table VIII, and rigidly supported in a test fixture.
14、from the conditioning chamber. shall be reconditioned in accordance with 4.4.3.7.1.3 and 4.4.3.7.1.4. The samples shall be tested within 5 minutes after removal When this time limit is exceeded, the sample 17 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from I
15、HS-,-,-6 4.4.3.7.1.3 Delay element temperature conditioning.-A standard inert delay element containing a thermocoupler shall be placed in the conditioning chamber at the same time as the sample. one (1) hour longer than the time necessary to bring the element contained in the inert delay element to
16、the required temperature. The vent hole of the delay element samples shall be sealed against the environmental atmosphere during the conditioning period. The conditioning time shall be a minimum of 4.4.3.7.1.4 Cartridge temperature conditioning.-Cartridges shall be loaded into acceptable M4 or M6A1
17、Initiators with end caps to cover the gas ports during the Conditioning period. The temperature of the propellant within the cartridges shall be considered as the conditioning temperature and will be determined by means of a thermocoupler attached to the center of the propellant charge of a specimen
18、 cartridge assembled in a standard test device similar to the initiator undergoing tests. necessary to bring the element contained in the specimen cartridge to the required temperature. The conditioning time shall be 1 hour longer than the time 4.4.4 Inspection equipment.-The examinations and tests
19、shall be performed using equipment listed on IEL 8594075. 5. PREPARATION FOR DELIVERY 5.1 Packing and marking.-Packing and marking shall be as specified Level “A“ - Drawings C8845190 and C8845191. by the procuring activity: “B“ Drawings C8845190 and C9227731. Level 6. NOTES 6.1 Ordering data.-Procur
20、ement documents should specify the title, number and date of this specification. 6.2 Advisory delay element output material (Formulation).-Approximately 23.7 percent Boron, 70.7 percent Potassium Nitrate and 5.6 percent binder, Advisory individual delay element output material weight: 1.5 grains. ap
21、proximately 6.3 Advisory delay element charge composition (Formulation).-Approximately 96.2 percent Barium Chromate and 3.8 percent Boron. element charge weight: Advisory individual delay approximately 21 grains. 6,4 Delay element assembly.-Delay time is defined as the time lapse between the impact
22、of the firing pin on the primer and evidence of gas flow from the venthole of the delay element, 6.5 Cartridge.-Delay time is defined as the time that elapses between the firing of the primer and the beginning of a continuous pressure rise on a pressure time record. 18 Provided by IHSNot for ResaleN
23、o reproduction or networking permitted without license from IHS-,-,-MIL-C-46272A (MU) 6.6 Loaded Assembly Hazard Information: Explosive Hazard Classification: Class 3 Storage Compatibility: Group B Department of Transportation (DOT) Class C DOT Marking - Small Arms Ammunition 6.7 Hazard notice.-The
24、cartridge described herein and certain of its components are flammable and/or explosive, consequently present hazards in manufacture, handling, storage and shipment. these hazards and take appropriate measures to guard and protect against fire, explosion, adverse environment, corrosive atmosphere, r
25、ough handling and electrically induced incidents. The contractor should recognize Custodian : Army - Mu Preparing Activity: Army - MiJ Project No, 1377- A566 .Cr U. S. GOVERNMENT PRINTING OFFICE: 1974 -713- 162:1051 19 c Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
