1、MIL-A- 19815A(Wep) 29 October 1961 Superseding MIL-A-19815 (Nord.) 16 July 1957 MZLITMY SPECIEICATION ARMING DEVICE (UNLOADED-LOADED) MABK 2 MODS 1 AND 3 (FOR EXPLODER mcmm MARK ig SERIES) This specification has been approved by the Bureau of Naval. Weapons, Department of the Navy 1. SCOPE 1.1 Scope
2、. This specification states the requirements for the pro- curement of Armlng Device Mk 2 Mods 1 and 3 (Unloaded) and the require- ments for the loaaing of Ardng Device Mk 2 Mods 1 and 3. Armring Device Mk 2 Mods 1 and 3 (Unloaded) perform the final electrical switching and mechanical alignment neces
3、saxy to arm %he exploder and, when loaded, contain the primary explosive train which detonates the torpedo warhead. - 2. APPLICABm DOCUMENTS 2.1 The following documents of the issue in effect on date of invi- tation for bids or request for proposal form a part of this specification to the extent spe
4、cified herein. -. SPECIFICATIONS a MILITrnY 1p-116 Preservation, methods of STANDARDS MILITrnY MIL-STD-129 MTL-STD- 350 MIL-sm-352 DRAWINGS RAW DEPARTMENT Marking for Shipment and Storage Jolt Test for Use in the Production of Fuses Forty-Foot Drop Pest for Use in the Production of Fuses Arming Devi
5、ce Mk 2 Mod 1 (Explosive loaded) and all Parts and Subassem- blies listed Thereon BlmPS L;D 275919 0- THIS DOCUMENT CONTAINS 2 7 PAGES. ., -f - - =c=L=_ - , 1 - /- 4- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-b mPS 480525 Arming Device Mk 2 Mod
6、 1 (Unloaded) and all Parts and Subassemblies Listed Thereon BUWEPS L 495939 Arming Device Mk 2 Mod 3 (Unloaded) and All Parts and Subassemblies Listed Thereon PUBLICATIONS BUREAU OF NAVAT; WEAPNS Arming Devive Mk 2 Mod 3 (Explosive Loaded) and AU Parts and Subassem- blies Listed Thereon os 6341 Mis
7、cellaneous General Ordnance Design Requirements (Copies of 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.) 3.1 Description. Arming Device Mk 2 Mo
8、ds 1 and 3 (Unloaded) shall consist of a flanged aluminum housing that contains a contact mount assembly and a detonator shutter. the underside of the shutter to receive the detonators, and provision shall be made for crimping the booster cup orho the bottom of the arming device housing. Mk 57 and a
9、 tetrylbooster pellet. Two recesses shall be provided in When loaded, the arming device contains two Detonators The shutter, which contains the electrically initiated detonators, is rotated by Exploder Mechanism Mk 19 from the disarmed (safe) position to the armed position. the detonators are electr
10、ically shunted to prevent accidental detonation. The detonators are locked in the safe position by the exploder bore rod, which prevents the shutter from rotating. bore rod is withdrawn and the shutter is rotated approximately 90 degrees clockwise. sets of contact fingers and are in line with blow-t
11、hrough holes in the barrier plate which separates the detonators from the booster charge. The contact fingers connect each detonator with the firing circuit. the detonators are fired, the bottoms of the two blow-through holes are forced through by the explosion of the detonator, initiating the boost
12、er charge, which in turn detonates the warhead of the torpedo. In the disarmed position, the electrical ,leads of During the arming cycle, the In the armed position, the detonators are placed between two When 2 * ._. .- e . Provided by IHSNot for ResaleNo reproduction or networking permitted without
13、 license from IHS-,-,- -_, - - MIL-A- 19815A( Wep ) 3.2 General requirements. 3.2.1 Contractor-furnished data. No data is required by this speci- fication, or by applicable documents referenced in Section 2, unless specified in the contract or order (see 6.3.4). 3.2.2 Preproduction samples, Unless o
14、therwise specified in the contract or order, preproduction smples of the arming device shall be manufactured using the methods and procedures proposed for the production. The sample 1611 be tested as specified in Section 4 herein and is for the purpose of determining, prior to starting production, t
15、hat the contractors production methods are capable of yielding items that comply with the technical re- quirements of the contract. 3.2.3 Materials. Unless otherwise specified in the contract, requisi- tion, or order, all materials and -purchased parts entering into the final assembly of the arming
16、device shall conform strictly to the detailed requ-irements indicated on the drawings and specifications listed in BWEPS L;Ds 275919 and 480525 (Mk 2 Mod i) or ills 495939 and 495940 (Mk 2 Mod 3), as applicable. 3.2.4 Finishes, coatings, construction, and dimensions. Finishes, coa-bings, constructio
17、n, and dimensions for the arming device shall be strictly in accordance with the applicable drawings, specifications, and publScations listed in BUFSEPS iDs 275919 and 480525 (Mk 2 Mod 1) or IDS 495939 and 495940 (Mk 2 Mod 3), as applicable. 3.2.5 Moisture, fungus, and corrosion. The arming device s
18、hall be rendered moisture, fungus, and corrosion resistant as required by OS 6341 any detonator having open circuit characteristics and the detonator is inserted in %he shutter and rotated to the disarmed position, the re- sistance between the detonator shall be not greater than 0.1 olun. 3.3.2.4 Co
19、ntact mount resistance. - With detonators removed, the re- sistance between the tiro %erininals of the contact mount assemby shall be not less than 15.4 ohm nor greater than 17.4 ohm. 3.3.2.5 Dielectric strength. On the Contact Mount Assembly, BWEPS Drawing 883562 .(Mk 2 Mod 1) or 1803626 (Mk 2 Mod
20、3), as applicable, the insulation resistance bekeen either terminal pin and the rivets of the shunt fingem shall be not less than LO megohms. mount assembly and shu-kter 8m assembled in the housing, without deto- na-bors and wbthout the safe-ky spring, the insudation resistance between each %erm%na,
21、l ph ana the shutter shaft, and between each terminal pin and the housTng, shall be no% less than 10 megohms. When the contact s and product characteristics for the . The loaded aulming device shall meet the following perforaance requirements and product character- istics. The tests and inspections
22、of 3.3.3 are to be performed without the tetryl booster pellet (BUWEPS Drai7in.g 959485) . However, the safety precautions outllned in 6.5 shall be adhered to when tests ad inspections with live detonators are performed. 3.3.3.1 Prior to installation of 1Sve detonators, verify that the requirements
23、specified 9n 3.3.2.2, 3.3.2.3, and 3.3.2.4 have been met. 3.3.3.2 After installation of detonators and assembly of shutter and contact mount assembly within the housing, and with the safety spring installed, apply a torque of 7 plus or minus 8 inch-pounds to the coupler in a direction to rotate the
24、shutter to the amed position. Movement of the shutter out of the disarmed position shall indicate the assembly is defective. 3.3.3.3 Operating torque. After installation of de-bonators and assembly of shutter and contact mount assembly within the housing, and Trith the safety spring rendered ineffec
25、tive, the shutter shall rotate 5 .- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL- A- 19815A( Wep ) from the unarmed to the armed stop position and from the armed stop position to unarmed stop position. The torque required to rotate the shutter
26、 shall be 4 plus 2 minus 3 inch-pounds. rotate the shutters in the segments of the arming device as it enters the armed and unarmed positions shall indicate an abrupt increase of at least $ inch-pound. The torque required to 3.3.3.4 After installation of detonators and assembly of shutter and contac
27、t mount assembly within the housing, and with the safety spring installed, the resistance between the terminal pins of the contact mount assembly shall be not greater than 8.35 ohms when in the armed position. 3.4 Environmental requirements. 3.4.1 This specification has been prepared to cover the en
28、vironmental requirements applicable to the manufacture of the unloaded arming device (3.42) and to the explosive loading of the arming device (3.4 3). Those activities that both manufacture and load the arming devices under the terms of one contract may omit 3.4.2.1, 3.4.2.2, and 3.4.2.3. 3.4.2 Envi
29、ronmental requirements for the manufacture of Arming Device Mk 2 Mods 1 and 7 (Unloaded). The unloaded arming device shall meet the I ,- - - _ applicable performance requirements and product characteristics of this specification after or while being subjected to environmental conditions defined belo
30、w, when tested as specified in Section 4. 3.4.2.1 Vibration. 3.4.2.1. L Vibration; ready nonoperating or ready condition. This requirement shall be met with the arming device (unloaded) completely assembled but with no restraint on the coupler, a spring installed (disarmed positLon), dumtuy detonato
31、rs inserted, and a booster cup attached containing a mass simulating the mass of the tetryl pellet. The arming device, so assemb1ed.an.d less pack or packaging and rigidly self-mounted on a vibration device as specified in 4.4.1.4.1.1, shall withstand the vibrations for the time and at the temperatu
32、res specified in 4.4.1.4.1,l. These vibrations may occur in any direction. There- after, the arming device shall show no damage, shall not have rotated out of the disarmed position, shall meet all the unloaded arming device performance requirements and product characteristics of this specification,
33、and shall meet the requirement of 3.3.3.2. 3.4.2.2.2 Vibration; operating condition. This requirement shall be met with the arming device (unloaded) completely assembled but with coupler restrained, spring installed, dummy detonators inserted, booster Provided by IHSNot for ResaleNo reproduction or
34、networking permitted without license from IHS-,-,-cup attached containing a mass simulating the mass of the tetrxl pellet, a simulated bore rod installed to render the spring ineffective, and the device rota-Eed to armed position. self-mounted on a vibration device as specified in 4.4.1.4.1.2 shall
35、withstand the vibrations as defined in 4,4,1.4,1.2 of one g over the frequency range of 20 %o i50 cps. These vibrations may occur in any directton, the armed position. shall meet all the unloaded arming device performance requirements and product characteristics of this specification, and shall meet
36、 the re- quirement of 3.3.3.2 t The arming device, so assembled and Monitor the circuit durtng the test to verify continuity in Thereafter, the arming device shall show no damage, 3.4.2.2 Shock; ready nonoperating or ready condition. This require- ment shall be met with the arming device (unloaded)
37、completely assembled, but with dummy detonators inserted, booster cup attached containing a mass simulating the mass of the tetryl peilet, spring installed (disarmed position), and with no restraint on coupler. The arming device, so assembled and self-mounted on a shock testing device as specified i
38、n 4.4.1,4.2 shall be subjected to a shock requirement of i50 gs peak magnitude, not less than 8 ms pulse duration, and approximating a one- half sine wave pulse, as specified in 4.4.1.4.2. device shall not have rotated ou% of disarmed position, shall show no damage, shall meet all the unloaded armin
39、g device performance requirements and product characteristics of this specification, and shall meet the requirement of 3 3 3.2. Thereafter, the arming 3.4.2.3 Temperature; high and low operation. The arming device less packaging and packing and mounted as specified in (unloaded) 4.4.1.4.3, shall be
40、subjected to the high and low temperature conditions specified in 4.4.1.4.3. At the conclusion of the test, and while still at the test temperature, the arming device shall show no corrosion or damage, shall meet all the unloaded arming device performance requirements and product characteristics of
41、this specification, and shall meet the requirement of 3.3.3.2. 3.4.2.4 Operating life. The arming device (unloaded) shall have an operating life of not less than 100 cycles as defined in 4.4.1.4.4.1. Thereafter, the arming device shall show no damage and shall meet all the unloaded arming device per
42、formance requirements and product charac- teristics of this specification, with the exception of 3.3 2.1 (Operating torque 1 t 3.4.3 Environmental requirements for the loading of Arming Device Mk 2 Mods 1- and 38 performance requirements and product characteristics of this specification after or whi
43、le being subjected to environmental conditions defined below, when tested as specified in Section 4. The loaded arming device shall meet the applicable Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-A-L7l5A 13 79777Ob 0300q35 b MIL-A- 19815A( W
44、ep ) WARNING The tess and examinations o 3.4.3.1, .4.3.2, and 3.4.3.3 are to be performed without the tetryl booster pellet (BWPS Drawing 959485). However, the safety precautions outlined in 6.5 shall be adhered to when tests and inspections with live detonators are performed. 3.4.3.1 Vibration, 3.4
45、.3 1.1 Vibration; ready nonoperating or ready condition. This requirement shall be met with the arming device (loaded) completely assembled as shown in BUWEPS Drawing 1803629 or BUWEPS Drawing 490910, as applicable, but with an attached mass simulating the mass of the tetryl pellet, and with no rest
46、raint on the coupler. The arming device, so assembled and less pack or packaging and rigidly self-mounted on a vibra- tion device as specified in 4.4.1.5.1.1 shall withstand the vibrations for the time and at the temperatures specified in 4.4.1.5.1.1. vibrations my occur in any direction. shall show
47、 no damage, shall not have rotated out of the disarmed posi- tion, and shall meet all the loaded arming device performance require- ments and product characteristics of this specification. These Thereafter, the arming device 3.4.3.1.2 Vibration; operating condition. This requirement shall be met wit
48、h the arming device (loaded) completely assembled as shown in RJWEl,PS Drawing 1803629 or BUWEPS Drawing 490910, as applicable, but with an attached mass simulating the mass of the tetryl pellet, the coupler restrained, a simulated bore rod installed to render the spring ineffec- tive, and the devic
49、e rotated to the armed position. The arming device, so assembled and self-mounted on a vibration device as specified in 4.4.1.5.1.2, shall withstand the vibrations as defined in 4.4.1.5.1.2 of one g over the frequency range of 20 to l5O cps. These vibrations may occur in any direction. verify continuity in the armed position. shall show no damage and shall meet all the loaded arming device perform- ance requirements and product characteristics of this
