1、53743 MILA-21OOlA(Wep) 10 October i962 Superseding 2 August 1957 M1JrA-21001( NOM) MIUTAIE SPECIFICATION AnMIN0 DEVICE MARK 6 BOD O (TORPEDO PRACTICE) This specification has been approved by the Bureau of Naval Weapons, Department of the Navy. 1. SCOPE 1.1 This specification governs the manufacture,
2、 assembly and preparation for delivery of Arming Device Mark 6 Mod O (Torpedo Practice) and the methods of inspection and tests upon which product acceptance will be based. Arming Device Mark 6 Mod O (Torpedo Practice) is an assembly adapted for receiving two eectroresponsive actuators which are shu
3、nted when the arming device is in a disarmed position and electrically connected in a firing circuit when the arming device is in an armed position. 2. APPLIcABmwcuMENTs 2.1 The following documents, of the issue in effect on date of invitation for bids, form a part of this specification. FEDERAL Fed
4、eral Test Method Standard No. 406 MILiTARY MIL-STD-I29 MIL-STD-105 Plastics: Method of Testing Marking for Shipment and Storage Sanpling Procedures and Tables for Inspection by Attribut es Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-2100lA(
5、 Wep) DRAWINGS BUREAU OF NAVAL WEAPONS LD 291742 291935 291936 Dwg 1387994 Arming Device Mark 6 Mod O Torpedo Practice Assembly (Empty) Preserved (Packaging) Condition Arming Device Mark 6 Mod O (Loaded) Shipping (Packing) Condition for 24 Arming Devices Mark 6 Mod O (Loaded) Contact Mount Assembly
6、fletaining Ring Spring Washer Safety Spring Arming Device Mark 6 Mod O Torpedo Practice Assembly (Empty) Safety Spring Releasing Tool (Copies of specifications, standards, drawings, and publications required #by contractors in, connection with specific procurement functions should be obtained from t
7、he procuring activity or as directed by the contracting officer. ) 3.1 General. 3.1il Wng Device Mark 6 Mod O (Torpedo Practice) shall be manufactured in accordance with LD 291742 and all documents listed thereon. 2 - iv Provided by IHSNot for ResaleNo reproduction or networking permitted without li
8、cense from IHS-,-,-flIL-A-23003A 33 M 9777706 0303373 2 a MIL-A-21091A(Wep) 3.1.2 production sample shall be required from the contractor as provided in 4.1.2. (Torpea-11 be comprised of the parts listed on IID 291742. 3.2.1 Cleanliness. Immediately prior to the assembly of the arming device, each c
9、omponent shall be free of dirt, dust, flux, oil, oxides, sulfides, or any other foreign matter that may impair assembly or sub- sequent functioning of the apparatus. Unless otherwise specified by the procuring agency a pre- 3.2 Inert assembl An assembly of Arming Device Mark 6 Mod O 3.2.2 Degree of
10、cure of plastic components. The plastic upper and lower contact mounts and plastic shutter shall be thoroughly cured and shall have an acetone extraction value of 5 percent maximum when tested in accordance with 4.5 I 3.1. 3.2.3 Soldering assembly. When soldering the contact fingers sub- assembly, t
11、he solder shall be confined to an area over and above the riveted portion of the pin and in no instance shall it be allowed to flow between the contact fingers in a manner that will prevent their acting as independent cantilever springs. contact fingers, the resistor leads shall be made mechanically
12、 secure prior to soldering. The contact fingers shall be tinned and soldered together at their interfaces as the resistor leads are soldered. shall not flow between the contact fingers. It is recommended that a suitable fixture be provided for properly orienting the resistors and the contact fingers
13、 of the contact fingers assembly during the performance of the soldering operation. Immediately after soldering, all flux shall be cleaned from the soldered and surrounding surfaces. An examination of the assembly shall indicate the absence of loose solder or such condition that could conceivably re
14、sult in a short or circuit failure . During assembly of the Solder 3.2.4 Fracture strength. The plastic shutter, when assembled within the contact mount ble the shutter to the contact mount assembly and rotate it between the shnt fingers, actuator. other recess of the shutter. Apply the test probes
15、of an ohmmeter to the leads from the Repeat this test with the same duimqy actuator inserted in the 4.5.3.7 .Contact mount assembly. This test is performed on the contact Apply the test probes of an ohmmeter (4.4.4) On the contact mount assembly apply the test mount assembly, Dwg 683562. to the two
16、terminal pins. 4-5.3.8 Dielectric test. probes of a megohmmeter (4.4.5) between either terminal pinand the rivets of the shunt fingers. Then assemble the shutter and contact mount assembly in the housing, without actuators and without the safety spring. Measure the insulation resistance between each
17、 terminal pin and the shutter shaft, and between each terminal pin andithe housing. 4.6 Preproduction an periodic production tests 4.6.1 Vibration. The mechanism shall be tested in two conditions, as *described below. (a) The first condition shall be with the arming device mounted rigidly to the vib
18、ration table by means of a mounting method simuiating the actual method of mounting used in service. component of the vibration shall be simple harmonic motion. shall be placed on the vibration table so that equal quantities of devices experience vibration perpendicular to the plane of mounting and
19、vibration parallel to the plane of mounting. vibrated through a range of frequencies from 700 to $00 cycles per minute in 100 cycles per minute increments. each increment and the amplitude of the vibration shalbe in accordance with the following schedule: The vertical displacement The samples The me
20、chanism shall be The dura*ion of the vibration of FR.EQUENC (cycles per minute) 700 to 1500 i600 to 2000 2100 to 2500 2600 to 3000 3100 to 3500 3600 to 4000 4100 to 4500 4600 to 5400 8 AMTIiITUDE (inches) 0.030 2 0.002 0.020 f 0.002 0.013 f 0.001 0.009 f 0.001 0.004 t 0.001 0.003 .c 0.0005 0.092 2 0
21、.0005 .o015 A 0.0005 DURATION 1 hour 1 hour 1 hour 1 hour 5 minutes 5 minutes 5 minutes 5 minutes Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI LA- 2100lA( Fiep ) (b) The second condition shall be with the device in the shipping container as spe
22、cified in section 5. the shipping container, shall be mounted on a vibration platform equipped with barriers so as to allow free movement of the container relative to the platform but prevent the devices from falling off the platform. motion of the platform shall be such that any point on the platfo
23、rm moves in a circular path one inch in diameter with the plane.of the circle perpendicular to the platform. The frequency shall be within the range of 240 to 300 cycles per minute. The package of mechanisms shall be vibrated for a period of one-half hour on each face of the container. The mechanism
24、s, packed in The 4,6.2 Shock. The arming device under test shall be subjected to a continuous two-phase shock applied in any direction. (a) velocity of 17.0 to 19.0 feet per second taking place in from 0.2 to 0.4 millisecond. The first (impact) phase shall consist of a change of (b) During the secon
25、d (drag) phase., the amng device shall be accelerated for a minimum time of 0.15 millisecond in such a manner that during this time the minimum average acceleration is 125 gravity units. 46.3 Temperature. Each arming device shall be capable of properly functioning throughout the temperature range of
26、 minus 65 degrees F to plus i60 degrees F. 4.6.4 Storage. As inclosed and sealed within the inner container, Arming Device Mark 6 Mod O (Torpedo Practice) shall withstand without damage a three day storage period at minus 80 degrees F. 4.6.5 Acceptance criteria. Failure of the arming device to meet
27、any of the requirements.and tests of this specifical2i.ons shall be considered cause for rejection of the lot. 5. PRF,PARATION FOR DELIVERY 5.1 Packwing 5.1.1 Level A 5.1.1-1 Each Arming Device Mark 6 Mod O (Torpedo Practice) shall be individually packaged in accordance with ID 291935. 5.1.2 Level C
28、 5.1.2.1 Arming Devices shall be individually packaged in a manner which will afford adequate protection from deterioration and physical damage during shipment fromthe contractor or supply source to the first receiving activity for immediate use. 9 Provided by IHSNot for ResaleNo reproduction or net
29、working permitted without license from IHS-,-,-d - MIL-A-2LOO1A 13 7777706 0301200 b a ML- A- 2100lA( Wep ) 5.2. Packing 5.2.1 .Level A 5.2.1.1 Twenty-four unit containers shall be packed in accordance with LD 291936. 5.2.2 Level C 5.2.2.1 Arming devices shall be packed in a manner which will provid
30、e protection from damage during direct shipment from the contractor or supply source to the first receiving activity for immediate use. of containers used shall conform to applicable carrier rules and regulations. The type 5.3 Marking 5.3.1 In addition to any speciB1,marking required by the contract
31、 or order, all marking shall be in accohlance with Military Standard MIL-STD- 129 CAWION: Arming Device Mark 6 Mod O (Tarpedo Practice) and subsequent removal from the package for assembly with actuators, care shall be exercised to avoid losing or damaging either the retaining ring, Dwg 883581, or s
32、pring washer, Dtrg 959425, as these components are required for assembly of the arming device with the exploder. At the time of packaging 6. NOTES 6.1 Ordering data. Procurement documents should specify the desiped level of packaging and packing. is definitely known that the equipment will be used i
33、mmediately upon receipt. Level C should not be selected unless it NOTICE When Government drawings, specifications, or other data are used for any purpose other than in connection with a definitely related Government pro- curement operation, the United States C-overnment thereby incurs no responsi- b
34、ility nor any obligation whatsoever; arid the fact that the Government may have fomiated, furnished, or in any way supplied the said drawings, specifications, or other data is not to be regarded by implication or other- wise as in any manner licensing the holder or my other person or corporation, or conveying any rights or permission to mufacture, use, or seli any patented invention that my in any way be related thereto. 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
