1、O MIL-C-82631 (OS) 29 March 1974 Superseding XWS-12717A 1 June 1970 MILITARY SPECIFICATION CONNECTOR, CABLE, TUBE DOOR, MK 42 MOD 1 This specification has been approved by the Naval Ordnance Systems Command, Department of the Navy 1. SCOPE 1.1 Scope. This specification states the requirement for the
2、 pro- curement of tube door connector assemblies for submarines in accordance with NAVORD LD 162838. 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on the date of invitation for bids or request for proposals form a part of this speci- fication to the extent specified here
3、in, SPECIFICATIONS Federal PPP- B- 62 1 PPP-C-843 Mi 1 i tary MIL- B- 117 MIL-s-901 MIL-T-18404 Boxes, Wood, Nailed Cushioning Material, Cellulosic Bags, Sleeves, and Tubing; Interior Packaging Shock Tests, H. I. (High Impact); Ship- board Machinery, Equipment and Systems; Requirements for Torpedoes
4、, Environmental Requirements, General Specification for FSC 1355 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-C-8263L 13 MIL-C-82631(OS) STANDARDS Military MIL-STD-129 MIL-STD-147 MIL- STD- 167 DRAWINGS Naval Ordnance Sys tems Command LD 16283
5、8 LD 162420 LD 162531 Dwg 757981 (Copies of specifications, 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 of- ficer. ) 3. REQUIREMENTS 3.1 Description. Ca
6、ble Tube Door Connector Mk 42 Mod 1 is cylindrically shaped and mates with the various torpedo control cables. On one side it mates with Torpedo Control Cable Type “A“ (NAVORD LD 162420) and on the other side it mates with Torpedo Control Cable Type “B“ (NAVOKD LD 162531). The connector has 65 herme
7、tically sealed double-ended pin contacts. Molded insert assemblies are mated to each side of the double-ended pin contacts and held in place with retaining rings. These molded inserts are removable for cleaning or replacement. 2 Marking for Shipment and Storage Palletized and Containerized Unit Load
8、s, 40“ x 48“ Pallets, Skids, Runners, or Pallet- type Base Mechanical Vibrations of Shipboard Equipment Connector, Torpedo Tube Cable Mk 42 Mod 1 Cable, Torpedo Control, Mk 6 Mod O, “A“ Type Cable, Torpedo Control, Mk 7 Mod O, 11 II - 3 Type Fiberboard Container Provided by IHSNot for ResaleNo repro
9、duction or networking permitted without license from IHS-,-,- flIL-C-2631 13 9777906 03b2Ll3 3 W 3.2 General . 3.2.1 NAVORD drawinps. In addition to the requirements specified herein, the cable connectors shall conform to NAVORD LD 162838 and all drawings listed thereon. 3.2.2 Conflicting requiremen
10、ts. In the event of conflict between the documents referenced herein and the contents of this specification, the contents of this speciEication shall apply. 3.3 Classification of requirements. aie requirements for the cable connectors are classified herein as follows: Requirement Paragraph Prep rodu
11、c t ion 3.4 Materials Design and Construction Me ch anical Re qui remen t s 3.5 3.6 3;7 Electrical Requirements . 3.8 Environmental Requirements 3.9 3.4 Preproduction sample. Unless otherwise specified in the contract or order, a preproduction sample (see 4.2.1) of torpedo tube cable con- nectors is
12、 required: The sample shall be manufactured using the methods and procedures proposed for the production lot and will be tested as spec- ified in 4.3.1 for the purpose of determining, prior to starting produc- tion, that the manufacturers production process will produce connectors that meet the requ
13、irements of this specification. 3.5 Materials. All materials used in the construction of the connectors shall be as sp.ecified herein and on NAVORD-LD 162838. 3.5.1 24 to 31 inches of mercury. 4.5 Test methods 4,5.1 Examination of product. The cable connector and its components shall be examined to
14、insure conformance to all requirements of this spec- ification and the applicable drawings. Assurance shall be made that no changes have been made in the connector other than those production approval, The connector shall be examined to with the fol lowing requirements : (a) 3.2.1 NAVORD Drawings. (
15、b) 3.5 Materials. (c) 3.6 Design and construction. granted for pre- assure compliance (d) 3.10 Workmanship. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-2631 13 7777706 0362Y43 7 E MIL-C-82631(OS) TABLE II. PREPRODUCTION TESTS Examination or
16、 Test Acceptance Tests Dielectric Strength Hydrostatic Pressure Insulation Resistance Continuity Insulation Resistance Continuity Vibration Shock Insulation Resistance . Continuity Insulation Resistance - Continuity Low Temperature (Operating) Mating and Unmating Force Insulation Resistance Continui
17、ty High Temperature (Operating) Mating and Unmating Force. Insulation Resistance Continuity Mating and Unmating Force Insulation Resistance Continuity Temperature and Humidity Insulation Resistance Continuity Salt Water Immersion Temperature and Humidity (Operating) (Storage Node) Tropical Environme
18、nt Insulation Resistance Continuity 8 Requirement Paragraph 3.8.1 3.9,1 3.8.2 3.8.3 3.9.2 3.8.2 3.8.3 3.9.3 3.8.2 3.8.3 3.9.4 3.8.2 3.8.3 3.9.5 3.7.1 3.8.2 3.8.3 3.9.6 3.7.1 3.8.2 3.8.3 3.9.7 3.7.1 3.8.2 3.8.3 3.9,8 3.8.2 3.8.3 3.9.9 3.8.2 3.8.3 _ Method Paragraph 4.5.3.1 4.5.4.1 4.5.3.2 4.5.3.3 4.5
19、.4.2 4 5 .3 .2 4.5.3.3 4.5.4.3 4.5.3.2 4s.3.3 4.5.4-4 4.5.3.2 4.5.3.3 4.5.4.5 4.5.2 4.5.3.2 4.5.3.3 4.5.4.6 4.5.2 4.5 3 .2 4.5.3.3 4.5.4.7 4.5.2 4.5.3.2 4.5.3.3 4.5.4.8 4.5.3.2 4.5.33 4.5.4.9, 4.5.3.2 4.563.3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from I
20、HS-,-,-HIL-C-8263L 13 9779706 036244Li 7 M MIL-C-82631 (OS) TABLE III. INDIVIDUAL TESTS Requirement I Paragraph Examination or Test I Examination of Product Insulation Resistance . Hydrostatic Pressure Connector Mating and Unmating Force Con tac t , Conduc tor Resistance 3.2, 3.5, 3.6, 3.10 3.8.2 3.
21、9.1 3.7.1 3.8.4 Method Paragraph 4.5.1 4.5.3.2 4.5.4.1 4.5.2 4.5,3.4 4.5.2 Connector mating and unmating force. The connector assembly shall be mounted in a movable holding device capable of measuring force in both a push and pull direction. plug, or equal, shall be engaged and disengaged to the mat
22、ing connector by hand as in service use. the units shall be not greater than 50 pounds with the “A“ Type cable and 60 pounds with the “B“ Type cable. Each mating cable assembly tube door The force required to engage and disengage See Figure 1. 4.5.3 Electrical tests 4.5.3.1 Dielectric strength, A vo
23、ltage of 1000 volts ac shall be applied between two points, one point being each circuit in turn, the other point being all the remaining circuits and the shell tied together.to ground. The potential shall be applied for one minute. There shall be no indica- tion of arcing during the test. 4.5.3.2 I
24、nsulation resistance. A 500-750 volt dc potential shall be The applied between two points, one being each circuit in turn, the other being all remaining circuits and the shell connected together to ground. potential shall be applied for 2 minutes maximm or until a stable reading is attained. current
25、 of 10 microamperes or less. requirements of 3.8.2. The instrumentation shall be capable of detecting a leakage The cable connector shall meet the 4.5.3.3 Continuity. Each circuit shall be probed with a 6-12 volt dc buzzer, or equivalent, for continuity. mere shall be no evidence of dis- continuity,
26、 to meet the requirements of 3.8.3. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-82h3L 13 H 997790b 0362445 O = NIL-C-82631 (OS) 4.5.3.4 Contact, conductor resistance. A Control Cable Assembly Nk 7 Nod O, NAVORD LD 162531, shall be mated t
27、o the cable connector and the resistance shall be measured from each female socket of the connector to the corresponding male pin in the in-linqconnector (see Figure 2). The ohmmeter or Kelvin-Bridge shall be capable of measuring a resistance of less than 0.1 ohm with an accuracy of at least plus or
28、 minus 0.02 ohm. The measured resistance of each circuit shall not exceed the values speci- fied in 3.8.4. 4.5.4 Environmental tests 4.5.4,l Hydrostatic pressure. Remove the snap rings, the insert holder, and the insert assembly from the connector and mount the connector in the hydrostatic pressure
29、tank as shown in Figure 3. suitably sealed. jected to the hydrostatic pressure. as practical and hold for 15 minutes, pressure shall be completely released and then raised to 50 psi for a period of one minute. oughly cleaned with distilled water and dried with an air blast. reassembly, the connector
30、 shall meet the requirements of 4.5.3.2 and 4.5.3.3. The bleeder hole shall be The side normally connected to the umbilical shall be sub- Raise the pressure to 3000 psi as rapidly At the end of the i5 minutes, the At the conclusion of the test, the connector shall be thor- After 4.5.4.2 Vibration. V
31、ibration tests shall be performed with the connector in the mated condition. The mated cable assembly and cable connector, with mating connectors, shall be mounted to a hydrostatic pressure tank &ich simulates a tube door, and this fixture in turn shall be mounted to a sinu- soidal vibration system
32、as illustrated in Figure 4. The vibration fixture shall be sufficiently rigid to prevent resonance frequencies greater than 1.5 to 1. All circuits of the mating connectors shall be wired in series. The input control accelerometer shall be placed on the vibration fixture adjacent to the cable connect
33、or mounting point. Two monitoring accelero- meters shall be mounted to the cable assembly, one on the in-line connector end and one on the tube door end. 4.5.4.2.1 Vibration schedule and levels. Vibration shall be conducted in three mutually perpendicular directions (see Figure 4) in accordance with
34、 the following schedule. proceeding with tests in another direction. All tests in one direction shall be completed before NOTE: All references to amplitude of vibra- tion refer to maximum.displacement of sinu- soidal motion from the position of rest, or one half the total excursion. (a) Resonance se
35、arch. The sample shall. be vibrated at frequencies from 5 Hertz (Hz) (or lowest obtainable but not higher than 10) to 33 Hz at a table vibratory amplitude of 0.010 _+0.002 inch and from 34 Hz to 50 Hz 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
36、,-NIL-C-82b31 13 7777706 0362qq6 2 MIL-C-82631 (OS) at a table vibratory amplitude of 0.003 +O.OOO -0.001 inch. The change. in frequency shall be made in 1-Hz steps and maintained at each step for 15 rt5 seconds. continuities in excess of 100 micrcseconds occur shall be noted, Ihe frequencies at whi
37、ch the greatest resonance or dis- (b) Vibration levels. The sample shall be vibrated in accordance with Table IV, minu tes. The dwell time at each integral frequency shall be 5 TABLE IV I Frequency hnge (Hz) 4 to 15 16 to 25 26 to 33 34 to 40 41 to 50 Table Amplitude (inch) (See Note Above) 0.030 10
38、.006 o . 020 +o. 004. 0.010 k0.002 0.005 +0.001 0.003 +O.OOO -0.001 - . (c) Resonance dwell. The sample shall be vibrated for 2 hours at the frequency at which the greatest resonance or discontinuities were noted. If no discontinuity or. resonance occurred during. the search, this test shall be perf
39、ormed at 50 Hz. During the resonance search and dwell portions of the test, hydrostatic pressure shall be applied for 5 minutes. The pressure shall be equal to normal depth firing conditions. 4.5.4.2.2 The above schedule shall be completed in each of the three mutually perpendicular axes. At the con
40、clusion of the vibration tests, the test specimens shall be subjected to the tests of 4.5.3.2 (Insulation resistance) and 4.5.3.3 (Continuity). Immediately following the above tests, the-hydrostatic pressure test of 4.5.4.1 shall be performed. 4.5.4.3 Shock. The cable connector shall be mated to Tor
41、pedo Control Cable Mk 7 Mod O and securely mounted to a shock fixture simulating ser- vice conditions as shown in.Figure 4. All circuits shall be wired in series for the purpose of monitoring any discontinuities. The test speci- mens shall be subjected to the shock test defined in MIL-S-901 for ligh
42、t- weight equipment. three principal axes shown in Figure 4. In each axis, the hammer shall Three shocks shall be applied parallel to each of the 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-8263L 13 m 7777906 O362447 4 m MIL-C- 82631 (Q
43、S) be dropped from 1, 3, and 5 feet. A total of nine shocks shall be per- formed. The series circuit shall be monitored, during shock, for discon- tinuity, using a relay chatter indicator or equivalent. in excess of 100 microseconds shall be considered evidence of failure. Discontinuities 4.5.4.3.1
44、At the conclusion of the shock test, the hydrostatic pressure test of 4.5,4.1 shall be performed. 4.5.4.4 Salt water immersion. The connector, mated with Torpedo Control Cables Mk 6 Mod O (LD 162420) and Mk 7 Mod O (LD 162531), shall be sub- jected to a 30-day immersion test. fixture so that all of
45、the connector is immersed in sea water. The con- nector shall be immersed for 16 hours and removed for a period of 8 hours. The sequence shall be repeated 30 times. No fresh water rinse will be permitted during the 30 cycles. nectors shall be subjected tothe tests of 4.5.3.2 and 4.5.3.3. The connect
46、or shall be attached to a At the conclusion of this test the con- 4.5.4.5 Low temperature (operating). The cable connector shall be mated to Torpedo Control Cable Assembly Mk 7 Mod O and mounted in the test chamber. The chamber temperature shall be lowered to +28 degrees F 15 degrees F and maintaine
47、d for a period of 48 hours, At the end of this time, and while still at the test temperature, the test specimen shall be subjected to the tests of 4.5.3.2 (Insulation resistance), 4.5.3.3 (Continuity), and 4.5.2 (tating and unmating force). 4.5.4,6 High temperature (operating). The cable connector s
48、hall be mated to Torpedo Control Cable Assembly Mk 7 Mod O and mounted in the test chamber. and maintained or a period of 48 hours. At the end of this time, and while still at the test temperature, the test specimen shall be subjected to the tests of 4.5.3.2, 4.5.3.3, and 4.5.2. The chamber temperat
49、ure shall be raised to 130 degrees F 15 degrees F 4.5.4.7 Temperature and humidity (operatinv). The test unit shall con- sist of the mated assembly of one “B“ cable Mk 7 Mod O, one cable connector MC 42 Mod 1 and one “A“ cible Mk 6 Mod O, Two such test units will be re- quired. jected to a temperature of +122 degrees F for 2 hours. During this 2-hour period the requirements of 4.5.3.2 and 4.5.3.3 shall be met. The prepared u
