1、I INCH-POUND I MIL-F-85475(AS) AMENDMENT 3 23 June 1995 SUPERSEDING AMENDMENT 2 3 September 1986 MILITARY SPECIFICATION FUZE, GUIDED MISSILE, FMU-l41/B This amendment forms a part of MIL-F-85475(AS), dated 12 December 1983, and is approved for use by the Naval Air Systems Command, Department of the
2、Navy, and is available for use by all Departments and Agencies of the Department of Defense. PAGE 2 * Paragraph 2.1.1: Delete “MIL-T-14757 Trichlorotrifluoroethane.“ PAGE 3 * Paragraph 2.1.1: Add “MIL-STD-2000 Standard Requirements for Soldered Electrical and Electronic Assemblies.“ Fol 1 owing para
3、graph 2.1.2, but before “CODE OF FEDERAL REGULATIONS (CFR) II, add “OTHER GOVERNMENT DOCUMENTS“. Following ninth line of paragraph 2.1.2, add “PUBLICATIONS“. * Paragraph 2.1.2: Delete “WS-6536 Procedures and Requirements for Preparation and Soldering of Electrical Connections.“ PAGE 4 Delete “PUBLIC
4、ATIONS“, “Naval Weapons Center (Code Ident 12934)“, “Reg Memo 335-196-76“ and title from Section 2. PAGE 5 Change paragraph numbers “3.1.1, 3.1.1.1, 3.1.1.2, and 3.1.2“ to “3.6, 3.6.1, 3.6.2, and 3.7“, respectively. Paragraph 3.2, first line, after “specified“, add “in the contract or purchase order
5、, I . AMSC NIA i of a FSC 1336 DISTRIBUTION STATEMENT A. Approved for pub1 ic release; distribution is un1 imited. Licensed by Information Handling ServicesMIL-F-85475(AS) AMENDMENT 3 Mode Inhibit Del ay Instant- PAGE 6 outputs I/ Inputs L/ Pin 9 Pin 12 Pin 5 Pin 4 No fire pulse No FP Ground Not con
6、nected (FP) (NC) FP No FP NC NC FP FP NC Ground * Paragraph 3.3.2.3, 1 ine 2: Delete “WS-6536“ and substitute “MIL-STD-2000“. Paragraph 3.4.1, fourth line, delete “3.1.2“ and substitute “3.7“. PAGE 7 Table II, change S5 test “Items checked (see Figure 2)“ column from “R4, SlC“ to “R4, R11, Q2, SIC“;
7、 and change S8 test “Items checked (see Figure 2)“ column from “Rl, 12, 13, 14, D2, SIC“ to “Rl, 12, 13, 14, 15, D2, 45, SlC, SlD, Solenoid“. PAGE 8 Table III, third column “Test set switch positions“ change Ctii subtitle to “Ct s/“ and add following footnote to bottom of page “s/ Test set C+ is at
8、case ground.“; change S1 and S2 tests “Items checked (see Figure 2)“ from “SlA“ and “SlB“ to “SIA. R16. R17. and R18 to case“ and “SlB. R16. R17. and R18 to case“; change test S4-Configuration C, Upper Limit (e;ghthcolumn) from “1.30K“ to “1.30M“. PAGE 9 Table IV, change A3 test “Items checked (see
9、Figure 2) first line“ from “R2, 4, 5, 11“ to “Cl, R2, 4, 5, 11“. Add new paragraph: “3.4.1.3 ODerabilitY (armed conditioned). The unit shall meet the requirements of Table V-1 when tested in accordance with 4.7.1.3.“. Add new Table V-1 as follows: Test OP 1 OP 2 OP 3 “Table V-l. ODerabil ity (armed
10、condition) reauirements for confiauration A (see Table I). aneous I I I I / All inputs and outputs are with respect to pin 8.“ 2 Licensed by Information Handling ServicesMIL-F-85475(AS) AMENDMENT 3 PAGE 10 Table V, third column, change subtitle “Ctii to Y+ 5/“ and add footnote “s/ Test set Ct is at
11、case ground.“; A3 test “Items checked (see Figure 2)“ column change from “SlC“ to “SlC, R2, R4, R5, R11, D1, D4, 42 (and R16, R17, and R18 to case)“. PAGE 11 Paragraph 3.4.4, third 1 ine, delete “28“ and substitute “29“. PAGE 13 Paragraph 3.4.7.2, second line, add “and“ after “(6.3.5),“ and delete I
12、I, and the alternate mode (see 6.3.8),“. Change paragraph number 3.6 to 3.8. PAGE 14 Paragraph 4.1.1.2, third line, delete “at least“ and substitute “not less than“. Paragraph 4.1.1.3, third line, delete “3.1.1“ and substitute “3.6“. PAGE 18 Paragraph 4.7, WARNING, first line, after “specified“ add
13、“herein,“. Paragraph 4.7.1, third line, delete “3.1.2“ and substitute “3.7“. Paragraph 4.7.1.1, last line, delete “table“ and substitute “tables.“ Add new paragraph to bottom of page as follows: “4.7.1.3 Operability (armed condition). To determine conformance with 3.4.1.3, perform the tests of Table
14、 V-l. held in a drop fixture (see Drawing SA497753) with the case secured by a compression fixture. and 8(-). resistors. of Table V-l. connected as indicated for each test. containing the test item shall be dropped to determine that the requirements of 3.4.1.3 have been met.“ For all tests, the unit
15、 shall be The unit shall be powered with 26 i3 Vdc at pins lo(+) Pins 9 and 12 shall be terminated with 3.6 +5 percent ohm Monitor pins 9 and 12 for a positive 20 +lo volt FP for each test Pins 4 and 5 shall either be connected to pin 8 (ground) or not For each test, the test fixture 3 Licensed by I
16、nformation Handling ServicesMIL-F-85475(AS) AMENDMENT 3 PAGE 19 Paragraph 4.7.2, second and third lines: Reg Memo 335-196-76“ and substi tute “SA497752“. Delete “the test set described in Paragraph 4.7.2, third line, delete “3.1.2“ and substitute “3.7“. After paragraph 4.7.2, add new paragraph as fo
17、llows: “4.7.2.1 Hiqh and low temperatures. To determine operability at low temperature, condition the device to -40 +5“F and stabilize at this temperature for 2 hours minimum. operability of 4.7.2. the low temperature units to t140 +5“F and stabilize at this temperature for 2 hours minimum. At this
18、temperature, verify the mechanical operability of 4.7.2. II At this temperature, verify the mechanical At the conclusion of the operability test, condition * Paragraph 4.7.3: Delete 2nd sentence and substitute the following: “Isopropyl alcohol (TT-1-735, grade optional) may be used as alternative im
19、mersion fluid for gross leak testing.“ Paragraph 4.7.4a: Delete the second sentence and substitute “Safing results in automatic discharge of the firing capacitor.“ Add new subparagraph as follows: “c. If the fuze is to remain in the armed position, discharge the firing capacitor by shorting pins 5 a
20、nd 8 together for 2 minutes minimum. measuring the voltage across pins 5 and 8. safe to handle. It Verify that the firing capacitor has been discharged by If less than 1 Vdc, the fuze is PAGE 20 Subparagraph e second line, delete “28“ and substitute “29“; and third line add “210 percent“ after “pF“.
21、 Renumber subparagraphs c through j, to d through k to account for new paragraph c. PAGE 21 Delete word “CAUTION“ at top of page and substitute word “WARNING“. Paragraph 4.7.5.2.2: Delete and substitute: 4 Licensed by Information Handling ServicesMIL-F-85475(AS) AMENDMENT 3 PAGE 21 (continued) “4.7.
22、5.2.2 Pvro shock. To determine conformance to 3.4.5.2,2, test the fuze in accordance with the following. excitation in the primary axis (see Figure 1) to satisfy the shock response spectrum shown in Figure 11, and one transient excitation in each of the two remaining orthogonal secondary axes consis
23、tent with the shock response spectrum shown in Figure 11. The duration of the applied shock transients shall be between 0.02 and 0.15 second. The analyses used to determine the shock response spectrum shall be performed at a sequence of natural frequencies at intervals of one sixth octave or smaller
24、. The allowed tolerance shall be within +6 and -3 dB of the specified acceleration. peak or notch equal to or less than one twelfth octave shall not exceed +12 and -6 dB from the specified spectrum.“ Subject the fuze to one transient Single PAGE 22 Paragraph 4.7.5.3, second line: Delete “105, either
25、 method“ and substitute “105.1, either method, except minimum temperature shall be -65F.“ Paragraph 4.7.5.4, first 1 ine, add “flight“ after “boost“. PAGE 24 Subparagraph g, at end of first line, add Ia minimum of“ and subparagraph i at beginning of third line, add “+lo percent“. PAGE 25 Paragraph 4
26、.7.7.2. Id, second Paragraph 4.7.7.2.2bY second ine, after “containing“, add “a minimum of“. PAGE 26 ine, after “containing“, add “a minimum of“. PAGE 27 Paragraph 4.7.7.2.3bY second 1 ine, after “containing“, add Ia minimum of“. PAGE 29 Paragraph 6.2.lbY delete subparagraph number “b“ and substitut
27、e IC; second line, delete “3.1.2“ and substitute “3.6.“ Paragraph 6.2. IC , delete subparagraph number IC and substi tute “d“; second line, delete “3.1.2“ and substitute 3.7.“ 5 Licensed by Information Handling ServicesMIL-F-85475(AS) AMENDMENT 3 PAGE 29 (continued) Paragraph 6.2. Id, delete subpara
28、graph number “d“ and substi tute “b“; 1 ast line, add “(see 3.2)“ at end of sentence. PAGE 31 Paragraph 6.3.7, second and third line: following impact.“ and substitute “when the target is sensed.“ Paragraph 6.3.8 Delete entirely. Delete “after a specified time delay PAGE 38 * Figure 7, third box tit
29、led “MECHANICAL OPERABILITY“: delete “4.7.2“ and substitute: “4.7.1.3, 4.7.2.“ PAGE 40 Figure 9, second horizontal 1 ine from bottom reading “6 PREPROD/l INSPECT“: Delete “1“ and substitute “3“. Figure 9, parallel to box labeled “R(S), S, O, R(A),“ add the following: 9 UNITS -40F 10 UNITS t140“F (4.
30、7.2.1) Figure 9 NOTES: Add: temperature shown. I “2/ Only mechanical operability tests shall be run at PAGE 42 Figure 11, above figure title: Add: “Note: Negative spectrum to be within 90 percent of positive spectrum for each shock test performed.“ PAGE 43 Figure 12. Add at end of title “(5.8 srms).
31、“ 6 Licensed by Information Handling Services MIL-F-85475 (3) 999990b 2003675 512 MIL-F-85475(AS) AMENDMENT 3 PAGE 44 Figure 13. Add at end of title “(9.2 qrms).“ PAGE 46 De 1 et e II 3 .I .I . 1 Delete “6.3.8 Alternate mode 31“. After “6.3.2“, add “and armed position“. In “Title“ column, sixth and
32、seventh lines, add “flight“ after “boost“. De 1 et e “3.1 . 1 II and subs t i tut e “3.6“ . Delete “3.1.2“ and substi tute “3.7“. and s u b s t i t u te 3 .6 .I II . PAGE 47 Below line 6.3.4, insert titles: “3.4.1.3 Operabili-y (armed condi . 9“ and ; “4.7.1.3 Operability (armed condition) 18“ PAGE
33、48 Delete “3.1.1.2“ and substitute “3.6.2“. Delete “3.6“ and subst i tute “3.8“. PAGE 49 i on Below line V, insert title: “V-1 Operability (armed condition) requirements for configuration A (see Table I) 10“ Figure 12 title: Add at end of title “(5.8 qrmsl“. Figure 13 title: Add at end of title “(9.
34、2 qrms)“. 7 Licensed by Information Handling ServicesMIL-F-85475(AS) AMENDMENT 3 The margins of this amendment are marked with an asterisk or vertical lines to indicate where changes (additions, modifications, correct ions, del et ions) from the previous amendment are made. Government assumes no 1 i
35、abil ity whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous amendment. This was done as a convenience only and the Preparing activity: Navy - AS (Project No. 1336-0003) 8 Licensed by Information Handling Services
