1、i 141-81064( OS) him 7 30 March 1971 Superseding MlEXDMEXL 6 29 January 1971 _. .i. i -, L -. r .? ci . .: . . -i By this change, basic specification 1-8i064(ep) is changed to Mn;-c-81 delete “BMPS“ and substitute %AVORD“; delete the term “Acceptance test“ and substitute the term “Quality conformanc
2、e test.“ Page 1: Delete from title “(For Torpedo Mk 46 Mod O)? and substitute “(For Torpedo Mk 46 Mods O and i) . I Page 5, paragraph 3.3.1.4. “3.3.1*4 Firing modes Delete and substitute: 3.3.1.4.1 Squib fired units. Uncaging shall be accomplished by ap- plication of 3 ampere dc minimiun for 15 mill
3、iseconds minimum. Uncaging circuitry before firing sh8J-l present a 2 k0.7 ohm load. 3.3.1.4.2 Solenoid fired units. The solenoid having a resistance between 1.3 to 50 ohms shall be capable of spring release and gimbal uncage in any of the following modes of operation: 90 ms to an external circuit c
4、onsisting of an RC32GF8R2J resistor and a JAN1N645 diode connected in series with gyro terminal P. The return line for this voltage shai be connected to gyro terminal L. cuit consisting of an 22684-02-0015 (204 resistor and a JANlX645 diode connected in series with gyro terminal. P, The return line
5、for this voltage shall be connected to gyro terminal L.“ (a) By applying 19 to 3C vdc or 31 to 35 vrms, 60 Hz, for 50 to (b) By applying 33 to 35 vdc for 20 to 30 ms to an external- cir- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-Blob4 (7)
6、 13 m 7779706 0358375 2 MIL-C-O(OS) 3.MmDm Page 5, paragraph 3.3.1.5 “3.3.1.5 Insulation resistance. The gyro insulation resistance Delete and substitute: shall be 50 megohms minimum at 200 vdc for i5 seconds between isolated gyro circuits and between these circuits and the case.“ Page 5, paragraph
7、3.3.1.6, Delete and substitute: a Il 3.3.1.6 Wound and caged indications. The gyro shall nave a positive means of indicating wound and caged condition. The indicating circuit shall have a resistance of 5.0 ohms maximumwhen measuredwith current 02 7.5 ma maximum. Page 5, paragraph 3.3.2.1: Delete “a
8、maximum defined by one or the Page 5, paragraph 3.3.2.1(b): ,Delete “A 7.5 degree Scorsby drift rate“ . ocher of.“ and substitute fThe gyro drift rate with 7.5 degree Scorsby action.“ Page 5, paragraph 3.3.2.2. “3.3.2.2 Scorsby-action drift rate. The gyro drift with 7.5 degree Scorsby action, with o
9、nly the spring motor operating, and with the gyro mounted in any direction on the Scorsby table shall not exceed 1.5 de- grees at any time during the first 30 seconds after uncaging.“ Delete and substitute: Page 7, Table 1: Delete “minimum“ from “Double Amplitude“ and “Accel- e:?ation“ column; add “
10、Minimum“after “O.75“, “0.1“, f10.0361, “l.3“, “3.O“, an io. 0. I Page 9, Table IV: “-45 to +140 degrees F O to +140 degrees F O to +i60 degrees F“ Page 9, paragraph 4.1. “4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for
11、the per- formance of all inspection requirements as specified herein. Except as otherwise specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of the incpec- tion requirements specified herein, unless disapproved by the Government. The
12、 Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements.“ Pages 10 and U. Delete paragraphs 4.3.2and 4.3.2.1 and substitute: “4.3.2 Periodic producti
13、on samplinq. Periodic production samples Change entries in right column to read: Delete and substitute: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. MIL-C-8LOb4 (7) 13 9979906 0358376 4 mL-c-81064( OS) mm shall be selected from units that have p
14、assed the quality conformance . incpectlons of 4.7 satisfactorily. These samples shall be subjected to th2 teets of 4.6 at an activity designated by the procuring activity. Periodic production sampling shal be as follows: Step 1. Upon initiation of production, select at random 1 unit Upon satisfacto
15、ry compliance of samples from each group of 30 units, selected from 3 consecutive groups shift to Step 2. selected shaU be numbered consecutively, starting with sample Number 1. Each sample so Step 2. Select at random 1 unit from each group of 70 units. Con- tinue with Step 2 for the balance of the
16、contract or until a defective unit is found. Each sample so selected shall be numbered consecutively, starting with a sample number one greater than the highest sample number selected in Step 1. 4.3.2.1 Defective units. When a defective unit is found in any group, acceptance of all units on hand sha
17、ll be withheld and the contractor shall: (a) Determine the cause of the defect. (b) Take the necessary action to correct or eliminate the defect from al1 units on hand and, if so directed by the procuring activity, eliminate defects from those previously shipped. (c) Submit to the procuring activity
18、 for approval the proposed corrective action to prevent recurrence of the defect. (a) Submit to the procuring activity for approval the proposed retest program to verify that the corrective action eliminated the defect. (e) resumed I Return to Step 1 and proceed as indicated when inspection is Page
19、12, Table V: Delete heading “Computer Number“ and substitute “Gyro Number. Page 12, paragraph 4.5.1.4: Delete “over a range of -45 to +i40 degrees FI and substitute “over a range of -50 to +145,egrees F.“ Page 12, paragraph 4.5.1.5: Delete “at 100 degrees F“ and substitute “at 110 degrees F. I Page
20、13, paragraph 4.5.2.1,2: In lines 5 and 6 delete repeated sentence that reads “The log frequency sweep between $0 and 5 cycles shall be con- ducted in 7.5 minutes. I1 3 i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- . . ._ J. : .* i. I I - Test V
21、ibration (4.5 -2.1) Acceleration (4.5.2.3) Shock (4.5.2.2) Temperat Ure, Nonoperating (4.5.2.4.1) Temperature, Operating (4.5.2.4.2) Pressure (4.5.2.5) Humidity (4.5.2.6) Life (4.5.2.7) Quality conformance (4.7) 1-81064( OS) AMExDm Page 15, paragraph 4.5.2.4.2. %,5.2.4.2 Temperature, operating. Dele
22、te and substitute: The gyro shall be stabilized at zero degrees F and tested to conform to the quality conformance test requiremots of 4.7. The gyro shall then be stabilized at +i60 degrees F and tested to conform to the quality conformance test requirements - of 4.7. Page 15, paragraph 4.5.2.5. “4.
23、5.2.5 Pressure test. Delete and substitute: The gyro shall be subjected to a pressure of 2.7 psia. ments specified in 4.7 after the pressure test.“ The gyro shall meet the quality conformance test require- Page 16, paragraph 4.5.2.7. “4.5.2.7 Life test. The gyro shall be operated through 25 operatin
24、g cycles (see The gyro shall be capable of meeting the quality conformance tests requirements specified in 4.7 during and at the con- clusion of the life test. Delete and substitute: The operating cycles accumulated during %environmental tests shall be included in the required 25 cycles.“ Page 16, p
25、aragraphs 4.6, 4.6.1, 4,6.i(a), and 4.6.i(b). Delete and substitute : “4.6 Periodic production tests. The periodic production sample, selected in accordance with 4.3.2, shall be subjected to the tests of Table X in the order specified. , . .- - Table X Periodic Production Test Schedule _. i ._ t- :
26、*Visud Check after Testing i f. . . 3: 4 ! Sample and Test Sequence i, 4, etc. I 2, 5, etc. I 3, 6, etc. I l l* l* 2* I 1* I 2* I 3* 4 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-? I MIL-C-81064 (7) 13 W 7777706 0358378 8 W m-c-81064( OS) 4.6.1 Periodic production test equipm : E:-:. ,I I_- ._ ._ - -.- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
