1、MIL-A-l8977D( OS) 7 June 1971 Superseding MIL-A-18977C( OS) 7 April 1967 MILITARY SPECIFICA!TION (For Torpedo Mark 37 Mods O, 2, and 3) This specification has been approved by the Naval Ordnance Systems Command, Department of the Navy 1. SCOPE 1.1 Scope. This specification establishes the requiremen
2、ts for the procurement, inspection and test of an Amplifier kannel, LD 162565, LD 296726, and Drawing 1154877. 2. APPLIcABmDocs . 2.1 The following documents of the issue in effect on the date of invitation for bids or request for proposal form a part of this specifica- tion to the extent specified
3、herein. Military MIL-P-116 m-82590 Military m-m-105 Preservation, Methods of Enviromental Requirements and Tests (For Torpedo Mk 37 Components and Assenlies ) Sampling Procedures and Tables for Inspection by Attributes Marking for Shipment and Storage Palietized and Containerized Unit LOS, 40 “ x 4.
4、8 “ Pallets, Skids, Runners, or Pallet-Type Base l- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-mL-A-18977( OS) I l LD 162565 Servo Amplifier Assenibled, and Bu 1 r Mods 2 end 3) Rairai Ormnce Systeme Command ts and acirswiblies listed thereon I9
5、 296726. Servo AiiqlllfAer Aseenibled, and all parfis and subassenblies listed there- on (BW 0) IiD i6754 Shipping (Packing) Condition, For One Servo wlifier Assembly NAVORD Dcsg 694739 - Actuetor Assenibled HAVORD wg 696886 Servo AqplifSer Asdenibled (Mods Board# siibsssenibly 2 and 33 Swm wg 8m4Cr
6、7.- NAVORD wg 877408- Semo AmpZifer Assmibled (Mud 6) Schematic Wiring Magram I Amplifier Cbnnei Suassehan reports accompanying samples submitted for preproduction ad Priodic production testing), or by applicable documents referenced in Section 2 - unless specified in the contract or order (see 6.2)
7、. or order, preproduction samples of the amplifier channel shall be mu- factured using methods and procedures proposed for the production lot. The units shall be tested as specified in Section 4 herein and are for the purpose of determining, prior to starting production, that the contractorfs produc
8、tion methods are capable of producing amplifier channels that-com- . piy with the technical requirements of the contract, 3.2.3 Materials. Unless otherwise specrfied in the contract, requisi- tion, Or order, dl materials and purchased pvts entering into the final assdly of the amplifier channel shal
9、l conform to the detailed require- LD 296726, and Drawing ii54877. 3.2.2 Preproduction sample. Unless otherwise specified in the contract See 4.3.1. merits ind-gated on the drawings and specifications listed in LD 162565, 3.2.4 Finishes, coatings, construction, and dimensions. Finishes, coatings, co
10、nstruction, and dimensions for the amplifier channel shall be in accordance with the applicable drawings, specifications, and pblications listed in LD 16565, LD 296726, and Drawing ii54877. 3.2.5 Moisture, fungus, and corrosion. The amplifier channel shall be rendered moisture, fungus, and corrosion
11、 resistant in accordance with detail requirements specified in the drawings and specifications listed in LD 162565, LD 296726, and Drawing 1154877. When moisture, fungus, and corrosion resistance are not specified in these documents, the amplifier channel shall conform as required by NAVORD OS 6341
12、3.2.6 Marking. Marking of asseniblies, subassenblies, and parts shall be in accordance with the applicable drawings listed in LD 162565, LD 296726, an *awing 1154877. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I - - MIL-A-18977D 13 W 997770b 0
13、300083 L nt-A-i8977( OS) 3.2.7 Threads. Unless otherwise specified, ali threads SU be in accordance with ?ationa Bureau of Standards Handbook 328. fit for-threads shall be as specified on the applicable drawings. The class or I 3.2.8 Conflicting requremmts. In the event of conflict between the ocuni
14、ents referenced herein and the contents of this specification, the contents of this epecificetion shall apply. . 3.3 Performance reguir-nts and product characteristics. _The ampli- fier cliannels shall met the following Performance reauirements prouct characteristics. ferrea to hereafter are listed
15、on wawing 871408. al three smpifier channels shownon Drawing 877408 are identical. All references to termi- na3. connections in this test refer to connector P -. . k3.1 Preproduction. A preproduction sample of five amplifier channels, manufactured in accordance with 3.2.2, SU be subjectei to the pre
16、produc- tion tests detailed in 4.4 at an activity designated by the procuring activi- ty, Acceptance of the preproduction ssmple shall be based on no defects in the sample. prior to the approval of the preproduction sample, shall be at the suppliers risk. I Further production of the amplifier channe
17、l by the supplier, 4.3.2 Lot size. Unless otherwise specified in the contract or order, each shipment of units of product shall he a separate “inspection lot“ and my differ from the quantity specifiedin the total order or contract In any event, ail units of a single “inspection lot“ shall be made to
18、 the same design, with the same materials and manufacturing techniques, and shall be part of one continuous production run. 4.3.3 Periodic production amples. bom each succeeaing lot or grand 4.5$ a random sample of five amplifier channels will be selected for sub- dssion to an activity designated by
19、 the procuring activity to determine compliance of the samples with the requirements of the contract, specifi- cation, and drawings. The amplifier channels shall be considere satis- factory if they meet all specificstion and pertinent drawings requirements Wd withetand the tests specified in 4.4 an
20、4.5, Failure of the periodic iproduction sample to comply with these requirements will result in the rejection of the lot, as determined by the procuring activity. 1 lot of 300 or less that have passed the quality conformance inspection of 6 Provided by IHSNot for ResaleNo reproduction or networking
21、 permitted without license from IHS-,-,-I HIL-A-L777D 13 R 7777906 0300086 i MIL-A-18977 ( OS) 4.4 i?reproduction and periodic production inspection. The preproduction and periodic production samples, after satisfactorily passing the quality coaformance inspections detailed in 4.5, shall be subjecte
22、d to the fol- lowing tests and examinations, Certified inspection data covering the re- sults of preproduction and periodic production inspections shall be for- warded- to the procuring activity. 4.4.1 Vibration 4.4.1.1 Mounting. The amplifier channel, less pack or packaging, shall be mounted in the
23、 servo amplifier case. The case, mounted securely to a vibration device by means of its mounting holes, shall be tested as spec- fied in 4.4.1.2 and 4.4.1.3. 4.4.1.2 Vibration, nonoperating. The amplifier channel shall be subjected to the “Vibration, nonoperating“ test of 1-82590 and there- after sh
24、all meet the requiremmts of 3.4.1.1. 4.4.1.3 Vibration, operating. The amplifier channel shall be sub- jected to the “Vibration, operating“ test of 1-82590 and during and thereafter shall meet the requiremnts of 3.4.1.2. 4.4.2 Temperature and humidity 4.4.2.1 High temperature and humidity, nonoperat
25、ing. The amplifier channel shall be subjected to the igh temperature and humidity, non- operating“ test of m-82590 and thereafter shall meet the requiremeriss of 3.4.2.1. 4.4.2.2 High temperature, operating. The amplifier channel shall be subjected to the “igh temperature, operating“ test of 1-82590
26、 and, while at the test temperature, shall meet the requirements of 3.4.2.2 4.4*2.3 LOW temperature, nonoperating, The amplifier channel shall be subjected to the “Low temmMre, nonoperating“ test of m-82590 and thereafter shall meet the requirements of 3.4.2.3. 4.4.2.4 Low temperature, operatin6. Th
27、e amplifier channel shall be subjected to the “Low temperature, operating“ test of MIL-E-82590 and, while at the test temperature, shall meet the requirements of 3.4.2.4. 4.4.3 Operating life. To test for operating life as specified in 3.3.7: 4.4.3.1 With the amplifier at an ambient temperature of 6
28、5 degrees F to 95 degrees F (18 degrees C to 35 degrees C), and test preparations made as specified in 4.5.4.1, allow the amplifier channel to operate for a period of 30 minutes, 7 I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-1877?D 13 W 7
29、77770b 0300087 7 mi 1-A-18977( OS) 4.4.3.2 Belance the amplifier chawiel as specified in 4.5.4.2.2, and D6 not disturb the balancing adjustment allow to operate an 8dditionaJ. 30 minutes, after which the power sources (4.5.3.1) will be deenergized. for the remainder of the life test. 4.4.3.3 Cycle t
30、he amplifier for 8; period of one hour on and one hour off, for 8 total operating time of 200 hours (30 4.5 Quality conformance inepection. Each amplifier channel delivered under contract shall be subjected to the following tests and examinations. Failure to wet any requirements specified herein sha
31、ll be considered cause for re Section. 4.5.1 Test conditions. Unless otherwise specified, the amplifier channel shall be subjected to quality conformance tests .iuhder tkie following conditiolis: ratswe: c tk5$*te2+ Rooh ahient 65 degrees F to 95 degrees F (18 degrees 4.5.1.2 htitude: Normal ground
32、atmospheric pressure. 4.5.1. 3 Vibration: None. 4.5.1.4 Bumidity: Room anibient to 95 percent relative maxim. 4.5.2 Test and inspection equipment and facilities. The manufacturer shal furnish and maintain all necessary test equipment and facili-bies and shall provide all personnel for performing the
33、 quality conformance tests. The test equipment shall be adequate in quantity and, unless defin- ite requirements are specified, shall be of sufficient accuracy and quality to permit performance of the required quality conformance.tests. 4.5.3 Test equipment. The following items of test equipment are
34、 re- quired to perform the quality conformance tests set forth in this specifi- cation : - 4.5.3.1 Power sources 4.5.3.1.1 One l5O-volt dc plus or minus 3 percent, 20 ma, 0.05 volt ripple maximum. 4.5.3.1.2 One 6.3-voit ac plus or minus 5 percent, center tapped, 1.5 .imperes, 400 HZ pius or minus 2
35、percent. 4.5.3.1.3 Two 100-volt ac plus or minus 3 percent, 400 Rz plus or minus i percent, 5 ma, isolat 5.3.1.5 One 4UO Hz, phase reversible, continuously variable, Sig- nal source of the saine phase as the 4-00 Hz pmr sources (4.5.3.1.3) and capdole of voltage changes of 0.01 volt and a maximum of
36、 5 volts. 4.5.3.2.1 Two o to E5 ma to an 4.5.3.2.2 One o to 20 ma. 4.5.3.2.3 One to 0.1, 0.3, 1.0 4.5.3 , 2 Measuring equipment milliammeters, capable of indicating current values *om accuracy of 0.5 ma, milliammeter, capable of indicating current values from ac vacuum tube voltmeter with the follow
37、ing scales: volt s . O 4.5.3.3 Miscellaneous components 4.5.3.3.1 One female connector (-1 on Drawing 85-87). 4.5.3.3.2 Two 5700 ohm plus or minus 1 percent resistors, rated at least 5 watts. 4.5.4 Test procedure CAUTION: In performing the tests specified in 4.5, extreme caution should be exercised,
38、 as dangerous voltages are present which may cause bodily injury or death. 4.5.4,l Test preparations, The following test preparations are re- Un- quired to perform the quality conformance tests specified herein. less otherwise specified, all terminals designated herein are listed on Drawing 877408.
39、references to terminals on Pbi hold equally for PkO2 and P403, as in 3.3. to a 5700 ohm resistor (4.5.3.3.2), fil three amplifier channels are identicd, and a 4.5.4.1.1 Connect the positive terminal of a milliammeter (4.5.3.2.1) 4.5.4.1.2 teminal R. Connect the negative terminal of the milliammeter
40、to 4.5.4.1.3 Connect the other end of the resislance to terminal LI . U-. - 4.5.4.1.4 Connect the positive terminai o9 the second milliammeter (4.5.3.2.1) to the second 5700 okmi resistance (4.5.3.3.2). 9 o Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS
41、-,-,-? NIL-A-L773D 13 W 7774706 0300087 2 MTL-A-l8977D( OS) I 4.5.4.1.5 Connect the negative terminal of the second millimeter to terminal S. 4.5.411.6 Connect the other end of the second resistance to terminal L. 4.5.4.1.7 Apply the 6.3 ac power source (4.5.3.1.2) to terminals E an F. Center tap to
42、 terminal P. 4.5.4.1.8 Apply one of the 100-volt ac power sources (4.5.3.1.3) to terminals B and C. 4.5.4.1.9 Apply the other 100-volt ac power source (4.4.3.1.3) to terminais A and D. NOTE: Terminais A and B shall have correc- sponding polakities, as shall terminals C and D. 4,5.4,1.10 Aprply power
43、 (4.5.3.1.1) to terminals L and P (L being positive). 4.5.4.2 Balance currents. To test for balance currents as specifie in 3.3.3: 4.9.4.2.1 Apply a signal soikce (4.5.3.1.5) to terminals H and K. I 4.5.4.2.2 Adjust this signal, both in magnitude and polmity, until the . output currents from pins R
44、and S are balanced at 6.5 plus or minus 1.5 ma. 45.4.3 Amplifier gain. To test for amplifier gain as specified in 3.3.4: 4.5i4.3.1 Adjust the magnitude of the signal voltage (4.5.3.1.5) Tor a change of 0.1 volt from the balanced conit5,on (4.5.4.2.2). 4.5.4.3.2 The output current from one terminal (
45、R or S) shall show an increase to i3 plus 1 ma minus 1.5 ma, and the output current from the other terminal (R or S) shall show a decrease to 3 ma maxim, as speci- fied in 3.3.4. 4.5.4.3.3 Adjust the signal source (4.5.3.1.5) to give a 1 plus 0.1 volt signal with polarity at terminal H %he same as a
46、t terminas A and 3; and the polarity of terminal Kthe same as at termina2.s C and D, as per 3.3.2. The output current from terminal R shall read i3 plus 1 ma minus 1.5 ma, and the outpue current fromterminal S shall read 3 ma maximum, 4.5.4.3.4 Readjust the signal as specified in 4.5.4.2.2. 10 Provi
47、ded by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.5.4.4 DC signal gain. To test for dc signal gain as specified in I 4.5.4.4,l Apply power signal source (4.5.3*1.4) to terminals M and N 4.5.4.4.2 Adjust the mgnitude of the power signal source to 1.5 volts
48、. 3.305: (M being positive). 4.5.4.4.3 The rau&ting current sWl show an increase from balance to 10.5 ma minimum, from terminal S, as specified in 3.3.5. 4.5.4.4.4 The resulting current shall shar a decrease from balance to 3.5 ma maximum, from terminal R, as specified in 3.3.5. 4.5.4.4.5 Remove pow
49、er (signai) 80mce (4,5.3.1.4). 4.5.4.5 Current bain. To test for current drain as specified in 3.306: 4.5.4.5.1 Remove the powr supply lead from terminal L. 4.5.4,5.2 Connect the lead removed from tedna L to the positive termina of a 0-90 ma dc milliammeter (4.5.3.2.2). 4.5.4.5.3 terminal L. Connect a lead from the negative terminal of the meter to 4.5.4.5,4 With the input from
