1、iD 495859 Pendulum, and all parts and subassWlies listed thereon shipping (Packing) Condition . For One Pendulum Asseribled Pinion Wrench Pendulum DIrE; 859875 Magnet m 8773% Pendulum Assembled (Copies of specifications, standards, drawings, and publications requested by contractors in connection wi
2、th specific procurement func%ions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2 mher publications. The following documents form a part of this specification to the extent specified herein. indicated, the issue in effect on date of invitation for bids
3、or request for proposaJ shall apply. Unless otherwise Na.t;ionaZ Bureau of Standards mlications Wook i128 Screw-Tread Standards for Federal Services (Application for copies should be addressed to the Superintendent 20402. ) 3. REQmms of Documents, Government Printing Office, Washington, D.C. 3.1 ,De
4、scripiion. The pendulum consists of a framework on which is mounted a suspended pendulum that is spring restrained, magnetically dampd, md actuated by gravty. Tilting of the pendulum base from the levei position, in the proper plane, causes a corresponding de- flection of the pendulum in relation to
5、 the base. synchro transinitter is connected to the pendulum and %he deflection. genera-kes an ac signal which is a measure of the degree of tilt. The rotor of a 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-L7023D 13 W 7777706 0300075 8 3.
6、2,2 Frepodwtion sarmle. Unless otherwise or order, prepoaUc%ion smples of the peniul-m shall be mnufac-1LLre usihe pyoduction lot. WS sh-szizc, conga, construction, and dimen-sions. The finishes, coat-hgs, constructioc, and dtmenslons for the pendum shall be strictly in accordance wiCfi applicable d
7、rawings, specifications, and publications listed in IJD 296723. 3.2.5 Xaiskwe, zfungus, an8 corrosion. The pendulm sha- be rendered rmfstwe, +U.nga, aY1 corrosion resistant in accordance witn detail re- quirments specified on the drawings and specifications listed in L3 296723. 3.2. Llk.in. me ;ibie
8、s and parts shall be io accordance wi%h the applicable rawings liste6 in L3 29723. 3.2.7 Thcreac. Unless otherwise specified, a1lthreaC.s shall be ir accwmce wik Xational Sureau of Sandasds andbook 1328. or 3% for tlweads shall be as specified on the applicable bawings. The ciasu 3.2. C CoaTlicting
9、req-drezents, Cofiictirg recpirenents arising De%veen S6.s specilicaloa Gr ary specifications, plica-lions, or raw5ngs listed hereh siall be referred in writirig to the procmlg ager-cy or the appinted agent for interpretation an clarification. 3.3 ?e+.Ioxaxce ad pro .A. upp ply as specifie in 3.3.1,
10、 the penduium output voltage at zem degree6 til% dial1 be no more tan 0.13 volt, and sliaI.1 be re- peatable within 0.05 volt as described in 4.5.4.3.1. 3.3.3 %le output voltage shaU vary, without sudden dips or peaks, as %he penillun base is tilted slowly in each direction. 3.3.4 The output voltage
11、 shall be at least 0.11 volt per degree til3 02 the base of the pendulum over a range of base tilt from 2 degrees to 10 degrees in each direction when working into a 5000 ohms plus or minus 10 percent resistive load. . 3.3.5 Phase. The output voltage shall be in Shse with the supply voltage when the
12、 stand is tilted counterclocbwise (as viewed from the pendulum end). When tilted clockxise, the output voltage shall be i80 degrees out of phase with the supply voltage. 3.3.6 At angles of two degrees to 90 degrees the output for eqW tiit angles in each direction must be equal to wi.thin 10 percent.
13、 mere shaU be no discontinuities or sudden voltage changes from 9 degrees in one dh-ection, through zero to 90 degrees in the other direction. 3.3.7 Damping. Enjlmun daslping shall be 10 percent of critical daqping. amplitude ratio of 0.73 or less. Such awing will result in successive swings to be i
14、n the 3.3.8 Movemen%. The pendaum shaJ1 swing freely. tke pendaum shall not touch the cover nor any wt of the framework under a de- flec%ion of the base of 90 degrees fsomthe level position. 3.3.9 Natural fYequency. The naturalfrequency of the pendulum asserribly minus the Damping Magnet, Drawing 85
15、9875, shall beat least slx Hertz. 3.3.10 Connector. Ail leads shall be brought out of the penduium 3.3.11 Insulation. through Comector 1L-C-24308( 3-2), as shown on Drawing 877366 . volts, 60 Hertz for one minute, between all pins (connected together) of Pl and grourd and between pins 1 and 2 connec
16、ted together and pins 7 and 8 connected together. All viring shall withstand a hi-pot test of 500 3.3.U.l The resistance between pins 1, 2, 7, and 8 of Pl, connected together, and ground shall not be less than 20 megohms at 500 volts dc. 4 i. *I; Provided by IHSNot for ResaleNo reproduction or netwo
17、rking permitted without license from IHS-,-,- MIL-P-17023D 13 7777706 0300097 1-6 3i3.12 Operating 1Ee. 3.4 ure, nonoperating. The pendulum shall meet all the performance requirements ard product characteristics of this specification after being tested as in 4.4.2.3. 3.4.2.4 Low temperature, operati
18、ng. The pendulum shall be capable of =et- all the performance requirements of this specification while under- going the test specified in 4.4.2.4. 3.5 Cleanup. ualification stated ic tkie Goverments notice of apProva, u-d.2 je detemainative of the requirements of the contract relative is- wxkistLp i
19、nsola as not specifically covered by applicable spr-r“fcnce inspection (paragraph 4.5) Periodic production inspection ( pasagaph 4.4) 4,3 Samgliqq 4.3.1 , piz 7 connected to the Y input, and pins 2 and 8 connected to ground of te oscioscope, apply i15 volts rms ac 400 HZ to pins 1 an 2. ea in either
20、 djxection 90 degrees *om level position. 4.5.1, We the following tests: 4.5.4.9 Insulation. BLkh the atmospheric conditions as specified in 4.5.4.9.1 Connec.1; pins 1, 2, 7, and 8 of P1 together. 4.5.4.9.2 A megohmmeter reading between pins 1, 2, 7, and 8 and grouna SU be.not less than 20 megohms a
21、t 300 volts dc. 4.5.4.9.3 Apply 500 volts, 60 Hz between pins 1, 2, 7, and 8 and groUna for one minute. There shall be no evidence of breakown. 4.5.4.9.4 Apply 500 volts, 60 Hz between pins i and 2 connected together and pins 7 and 8 connected together. eviaence of breakdown. There shall be no 4,2.4
22、.10 Visual and dimensiona examination. Each pendulum shall be amine to determine conformance with the requirements for work- rcans5.s and dimensions. k5.al mwldngs Level. A. Unit pach shall be marks Level C. Unit packages and shipping containers 503.3 SeriaJ. numbers. Unit packages and shipping containers shaL1 shions for immediate use a-b the first receiving activity. 6.3.2 Level C. This level shall be used only when it is definitely Preparing Activity Navy-OS Project No. 1355-Ni79 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
