1、MIIJIICARY SPECIFl-CATION mL-82450B( OS) 25 April 1972 Superseding 1 July 1968 MIL-A-8245OA( OS) AUTOMATIC PILOT TESI SEP (For Torpedo Mk 46) This specification has been aBroved by the Naval Ordnance Systems Commamd, Department of the Navy. 1. SCOPE 1.1 This specification covers requirements for pro
2、curement of one type of Au-bomtic Pilot. Test Set (see 6.1). 2.1 The foiowing documents of the issue in effect on date of invi- tation for bids or request for proposd. form a pat of this specification to the extent specified herein. MIII-m-l2g Marking for Shipment and Sorage DRAWINGS Naval Ordnarice
3、 stems Command DL 254-0360 PUBI;ECATIONS Automtic Pilot Test Set, and ail. documents listed hereon Special Manufacturing Procedure for Calibration of Automatic Pilot Test Set, DL 254-0360 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-82450B 1
4、3 7777706 0361211 3 a MIL-A-8245OB( OS) (Copies of drawings and publications required by suppliers in connection with specific procurement functions shdd be obtained fromthe procuring activity as directed by the contracting officer.) 3. REQmmS 3.1 Basic requirements 3.1.1 Contractor-*nished data. No
5、 data is reqwhed by this specifica- tion or by applicable documents referenced in Section 2 mess specified in the contract or order (see 6.2). 3.1.2 Materials and treatments of materials and parts. Uniess other- wise specified in the contract or arder, all materials and treatments of materials and p
6、arts used in manufacture of the automatic pilot test set shall be in accordance wtth requirements specified herein and with the applicable documents listed in DL 2540360. 3.2 Performance and product characteristics 3.2.1 Input power. The input power requirements of the test set shall be 115 Wj volts
7、 alternating current (ac) at a maximum current of 7.5 amperes. 3.2.2 DC voltage outputs. The test set shall furnish k40.0, kl5.0, and -30.0 direct current (c) voltages to test set- _ou3ut terminals into specified loadso The voltage shallbe ad justable when loaded, over a I5 percent range, and be adj
8、ustable,-der-Tod, to witi*O.l vdc of the specified nomiml. ameters shall be provided to monitor load current. - -_ -_ With the exception of the -40 v SS line, 3.2.3 Performance requirements. The test set shall provide the following functions: 3.2.3.1 Ekploder power supply. An output to drive the +gO
9、 vdc IN lines that appears as a source of t-140 to +a50 vdc open circuit voltage and 5 to 8 milliampere (ma) short circuit current. 3.2.3.2 4.8 kBz output voltage. A 4.8 kiloHertz (icu be provided which shall function as foowsi (a The CW, DOWN, and RIGIEI! indicators shall illuminate when a 75,000 o
10、hm load is connectedbetween their Znputs ad the -4.0 vdc terminal. (b) ohm load is connected between thetc inputs and ground. The CCW, UP, and I;EFT indicators shall illmate when a 75,000 3.2.3.12 Output loads. A switch shaU be provided to select YAW, PITCH, and ROLL output loads corresponding to MO
11、D 1 or MOD O config- uration. (a) With the MOD switch in the 1 position, the output loads shall be 9lO ohms * 1 percent. (b) With the MOD switch in the O position, theoutput loads shall be 350 ohms +5 percent. 3.2.3.13 Pitch conmiand signals. The following simiated. pitch comnand signals shall be pr
12、ovided to the Up or Doi4It COMMAND inputs: (a) o( zero): (b) 1 UP: Adjustable from +1.23 to +2.22 vdc (c) 2 Up: Adjustable from +2.56 to +3.26 vc -25 -t- mv (a-l), 0+5 mv (MOD O) (a) 1 DOWN: Adjustable from -1.23 to -2.22 vdc (e) 2 DOWN: Adjustable from -2.56 to -3.26 vdc 3.2.3.1k Yaw command signal
13、s. The following simulated hw command signals (a) O(zer0): shall be provided to the UFT and EGIEI! COMMAM inputs. -25 51 mv (MOD l), 0+5 mv (MOD O) (b) 1 CEFI?: Adjustable from -1.23 to -2.22 vdc (c) 2 LW: Adjustable from -2.56 to -3.26 vdc (a) 1 FCCGRT: Adjuskable from t.1.23 to +2.22 vdc (e) 2 RIG
14、RT: Adjustable from +2.56 to +3.26 vdc Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-82450B 13 W 7799906 036L214 m:A=82450B( OS) 3.2.3.15 Function selector. A selector switch shall be provided wh5ch allms rnonitorfng of the followjag autopilo
15、t signals: b DOPFTER LOGIC PITCH RANGE CONSTRAIE9 NOT AIR/ASROC SEARCH SD NOT ACHIEXBD - PASSTE BEAM WIm CONlXOL ACTIVE COMPUTER ENABm AIR/ASROC SEARCH - -30 v LOG AMP 3.2.3.16 400 Hertz functions. A 65 om load shall be provided as a An indicator to sense the dummy load for the Autopilot 400 Hz supp
16、ly. presence of 400 Hertz voltage and a switch to allow application or removal of +kO vdc SS power to the 400 Hertz supply shall be provided. 3.2.3.17 Instrumentation test points. Instmmentation test points shall be provided to allow monitoring of the following Autopilot instrumentation lines: INSE
17、COURS GYRO INSI! PITCH RArlTE GYRO INST ROLL RATE GYRO INSI ROLL PENDULUM INST YAW RATE GYRO INSI PITCH PE“0M 3.3 Workmanship, Workmanship and finish shal be of sufficiently high grade to ensure satisfactory operation consistent with requirements of this specification, and free of excess materials,
18、chips, and loose or spattered foreign mterials. saqple, subject to,any qualification stated in the Governments notice of approval, shall be deteMa2native of requirements of the contract relative to workmnship insofm as no% specifically covered by applicable specifica- tions. All parts used in the te
19、st set shall be thoroughly clean Standards of workmanship exhibited in any approved preproduction 4. QUALITY ASSITRANCE PROKCSIONS 4.1 Responsibility for inspection. Unless otkierwise. specified in the contract or purchase order, the supplier is responsible for the perform- ance of all inspeckion re
20、quirements as specified herein. wise specified in the contract or order, the supplier may use his own or any other facilities suitable for the perfomnance of the inspection re- qil-irements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of th
21、e inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed reqmements. Except as other- 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-8245OB( OS) 4.2 Class
22、ification of inspections. Inspections of the test set shall be classified as follows: 4.2.1 Wity conformance inspection (a) (b) Quality confomnce sampling (see 4.3.1) Quality conformme tests and examinations (see 4.5) 4.3 SampliW 4.3.1 Quality conforamce sampling. The tests and examinations specifie
23、d in 4.5 shall be conducted on each test set to be delivered; therefore, there shaU be no sampling plan for acceptance. Defective units shall be rejected. 4.4 Test conditions. Unless otherwise specified, the test set shall be subjected to tests under the following conditions: (a) -rature Room anibie
24、nt -( 60 to 95 degrees Fahrenheit (F) (b) 38umidity (relative) Room anibient, up to 95 percent (e) attuae - Noradi. ground atmospheric pressure 4.5 -y conformahce Wsts and examinations. Unless othemse specified, each test set delivered under contract shall be subjected to the tests and examinations
25、contained in 4.5.3. 4.5 . 1 Conditions 4.5.1.1 Test sequence. Unless otherwise noted, sequence of test- ing procedures presented herein is mandatory and must be performed in the order shown. 4.5.1.2 Test resuts. Where space is provided in Appendix Report Form to indicate value or specific reading ob
26、tained, the specifk reading shall be recorded if a limit or limits axe given in Limits colm. The individual performing the test or inspection shall initial in space provided in the Reading columri, indicating timt requirements were met ; satisfactorily. 4.5.1.3 Acceptance criteria. Failure of the en
27、d product to pass any exam5nation or test of this section will automtically classify the unit as nonconfomxing. When nonconforming units are corrected by the 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-contractor, the unit shall be reinspected
28、. forming mit my be limited to the test or examination which defined the nonconformance, or when so directed by the cognizant inspector, a complete re-examination and retest of the unit may be required. which have not been corrected, will be considered for acceptance only upon formal application by
29、the contractor to the Naval Ordnance Systems Command via the cognizant Government representative. The reinspection of a noncon- Nonconforming wits, 4.5.2 Quality conformance test equipment. Items of test equipment shown in Table VII are required to perform the quality conformance tests specified her
30、ein. Afl items o? test equipment shall be of sufficient accuracy and precision to permit valid performaace of required tests. Test instruments shall be calibrated at regular intervals and procedures for the results of all calibrations shall be subject to approval of the cognizant Government Inspecto
31、r. substituted where necessary. Items having equivalent characteristics my be Table VII Quality Conformance Test Equipment Item Digital Voltmeter - (Range: 0.001 to 999.9 vdc or vmns: dc accuracy: Jr0.05$ of reading CL digit; ac accuracy: 20.1% of reading f2 counts; Input impedance: 10 megohms, 20 p
32、f.) Oscilloscope-(Bandpass: Rise time: Accuracy: from DC to 15 mega- from 0.023 microsecond; 3 percent from 0.05 to 20 volts/cm.) Resistance Bridge-(Range: 0.001 to 9,999,000 _ ohms* -? _. Accuracy;- - 0.15 percent fO.01 ohm from 1.0 to 40,000 OhmG Distortion Analyzer-( Total harmonic distortion: 3%
33、 over frequency range of 20 HZ to 20 MZ.) Phase Meter-( Wequency Range: megaHrte. Fu21 Scale Sensitivity: 1“ or 0-4, 0.05“ or 2$.) 15 Hz to 500 . 0.04 volt rms. Phase Angle Range: 0-1, 0-2, Identification Hewlett-Packard Model 3440A with 3445A AC/DC Range Unit TeHronix Model 535A with type CA preamp
34、lifier Leeds Accuracy: from 10 Hz to to 33 count.) Multimeter - ( Ohmeter; Resistance range : O to 20 megohms; Accuracy: Within 3“ of arc on resistance scale.) Identification Comercial Hewlett-Packard Model 522B Simpson Model 260 Commercial 4.5.3 Test procedures 4.5.3.1 DG power supply NOTE: Before
35、turning on the 4.8 KC ON-OFF switch (PANEL NO. 3), jumper pin J4201-X to pins Jk202-J and J4201-P, and pin J4201-V to pin Jk202-D. jumpers shall remain connected unless otherwise specified. These 4e5e3.1.1 Preliminary setup (a) Turn 4.8 KC ON-OFF switch off. Sfurn on all power supply power switches.
36、 to ON. On digital voltmeter, set FONCTION switch to DC and RANGE switch to AUTO. Turn ON-OFF switch (POWEE3 PANEL) and AUTOPILOT POWEZ switch Permit eqpiprtmrb to stabilize for 15 minutes before taking data. NOTE: resistors specified troughout following tests, AIR/ASROC-TUBE LAUNCH switch shall be
37、set at AIR/ASROC. Set same switch to OFF while mking voltage and current measurements. While connecting or disconnecting load 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Nom: Ail voltages of Table ZX shall be measured at appropriate test jacks
38、 located on PANEZ NO. 1, using digital voltmeter. be made after power supply voltages have been adjusted to specified voltage indications with specified loads connected. Adjus-Banent controls for +l5 vdc and -30 vdc supplies me located on Current readings shall test PANEZ NO. l. NOTE: set AIR/ASROC
39、- WE LAUNCH switch to TBE LAUNCH and then AIR/ASROC. in both positions shall be -0.2 to +0.2 volt dc. After each voltage reading in Table IX, Voltage indication (b) Connect resistances listed in LOAD RES. colunm of Table IX between JkOl-P (GRD) and connector pins listed. Table IX Adjustment of Power
40、 Supplies Pwer WPly (Volts DC) +40 -40 -15 4-15 -30 connect or and Pin J4201-U 53601- JJ J3601-LL 3601-KK 53601-NN Load Reso (ow) indication (Volts DC) - 80 (TOW) +39.9 to +kO.l Infinite -39.9 to -40.1 60 (low) -14.9 to -15.1 200 (low) 4-14.9 to 4-15.1 200 (low) -29.9 to -30.1 1ndicaMon 4.80 to 520
41、ma 238 to 262 TI to 77 ma 142 to 157 ma 4.5.3.1.2 4-40 SS supply (a) (b) (c) Set 400N switch on PANEL NO. 1 to ON. AdJust 1-40 VDC supply to -1-40.0 k0.1 (4-39.9 to -1-40.1) volts dc as indicated by digital voltmeter. Current meter indicaticm shall be as shown in Table Tx. Set 400N switch to OFF and
42、 remove load resistor. 4.5.3.1.3 -40 VDC SS spply (a) Adjust -40 VDC power supply to -40.0 3.0.1 (-39.9 to -40.1) vots dc, as indicated by digital voltmeter. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-m-A-82450B( OS) (a) Adjust -15 VM: power sup
43、ply to -15.0 kO.1 (-14.9 to -15.1) volts dc, as indicated by digiW voltmeter. (b) (c) Remove load resistor. Current indication shall, be as shown in Table IX. 4.5.3.1.5 +15 VIX: supply (a) (b) Check sumly for adjustment range of +14.25 to +5.75 volts dc. Adjust +l5 VDC power supply to +15.0 k0.1 (+1
44、4.9 to N.5.l) volts dc, as indicated by digital voltmeter. (c) (a) Remove load resistor. Current indication shall be as shown in Table IX. (a) (b) (c) (a) Remove load resistor. Check supply for adjustment range of -28.5 to -31.5 volts dc. Adjus% -30 VDC power supply to -30.0 k0.l (-29.9 to -30.1) vo
45、lts dc, as indicated by digita3 voltmeter. Current indication shall be as shown in Table IX. 4.5.3.1.7 +i25 VDC supply (a) Connect two 130K, 1/2 watt resistors (45%) from JkOl-S (+go VDC 33) and 34201-T (+so VM: IX) to JkOl-P (GRD). Connect digital volimeter to the +E5 VDC test point on PANEL NO. 1.
46、 (b) Adjust +i25 VDC ADJ control to obtain +l25 22 (e123 to +127) volts de indication on digital voltmeter. (c) Connect dlgital voltmeter to +go VDC N (S) and +gO VDC IN (T) test points. (a) (e) Digital voltmeter sha31 indicate +U0 +3 (+i07 to +113) volts dc at eachtest point. Remove the 130K load r
47、esistors. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-2450B 13 777770b 0363225 3 MIL-A-8245OB( OS) 4.5.3.2 Internal test set voltages (a) Connect digital voltmeter between 3.5 KW TS tes% point and FWR GM) test point located inside test set
48、cabinet on Chassis No. 3. shall, be +5.0 40.4 (+4.6 to +5.4) volts dc. Indication (b) Connect digital voltmeter between -20 VDC TS test point and PWR GND Indication shall be -20.0 c1.3 (18.7 to -21.3) volts dc. test point. 4.5.3.3 Test point wkcing (a) Using digital voltmeter, measure voltage at + V
49、DC IS, +l5 VDC IS, -15 VDC TS, -30 VX TS, -40 VDC TS test points on Chassis No. 3. shall be approximately the same as those.Trecorded for 4.5.3.1.2 through 4.5.3.16. loaded. (b) Indications Variations in indications will be because supplies are no longer Using digital voltmeter, measure voltage at +l5O VE TS test pobt on Chassis No. 3. switch on digital voltmeter to AC. Indication shaXbe +l
