1、MIL-F-85475 13 9997706 0364962 8 - MIL-F-85475(AS) 12 December 1983 MILITARY SPECIFICATION FUZE, GUIDED MISSILE, FMU-l41/B 4 This specification is approved for use by the Naval Air Systems Command, Department of the Navy, and is available for use by all Departments and Agencies of the Department of
2、Defense. 1. SCOPE. 1.1 Scope. This specification establishes the requirements for manu- facture and acceptance of the EMU-l41/B Guided Missile Fuze, referred to herein as the fuze. 2. APPLICABLE DOCUMENTS. 2.1 Government documents. 2.1.1 Specifications and standards. Unless otherwise specified, the
3、following specifications and standards of the issue listed in that issue of the Department of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation, form a part of this specification to the extent specified herein. O c E SPECIFICATIONS FEDERAL UU-T-81 Tag, Shipping and
4、 Stock. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commanding Officer, Naval Air Engineering Center, Engineering Specifications and Stan- dards Department (ESSD), Code 93, Lakehurst, NJ 087
5、33, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document, or by letter. d Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-85Y75 13 W 7797906 03b4763 T E L-T-100 TT-1-735
6、MILITARY MIL-S-6872 MIL-T-14757 MIL-T-18303 MIL-C-21723 MIL-D-85294 MS51938 STANDmS FEDERAL FED-STD-102 MILITARY MIL-STD-105 MIL-STD-129 MIL-STD-202 MIL-STD-331 MIL-STD-454 MIL-STD-810 MIL-STD-1246 MIL-STD-1316 Tape, Pressure-Sensitive Adhesive, Polyester Film. Isopropyl Alcohol. Soldering Process,
7、General Specifi- cation for. Trichlorotrifluoroethane. Test Procedures, Reproduction, Acceptance, and Life for Aircraft Electronic Equipment, Format for: Composition CH-6. Detonator, Electric, MARK 71 MOD 1. Seal, Metallic, Lead and Wire. Preservation, Packaging, and Packing Levels. Sampling Procedu
8、res and Tables for Inspection by Attributes. Marking for Shipment and Storage. Test Methods for Electronic and Elec- trical Component Parts. Fuze and Fuze Components, Environ- mental and Performance Tests for. Standard General Requirements for Electronic Equipment. Environmental Test Methods. Produc
9、t Cleanliness Levels and Con- tamination Control Program. Fuze, Design Safety Criteria for. 4 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-5475 13 7977706 0364964 L MIL-F-85475 (AS) _- MIL-STD-1695 Environments, Working, Minimum Standards
10、for. MIL-STD-45662 Calibration Systems Requirements. 2.1.2 Other Government documents, drawings and publications. The fol- lowing other Government documents, drawings, and publications of the issue specified in the solicitation, form a part of this specification to the extent specified herein. CODE
11、OF FEDERAL REGULATIONS (CFR) 49 CFR 171-178 Transportation. (Application for copies should be addressed to the Superintendent of Documents, Government Printing Office, Washington, D.C. 20402.) Naval Air Systems Command (Code Ident 30003) WS-2183 WS-6536 Critical Item Product Fabrication Specificatio
12、n for Triggering Device, Fuze, MARK 4 MOD O. Procedures and Requirements for Prep- aration and Soldering of Electrical Connections. Naval Sea Systems Command (Code Ident 53711) WS-1639 OS-8164 Descriptions and Requirements for Detonator, Electric, MARK 85 MOD O. Lead, Explosive, MARK 9 MOD O. DRAWIN
13、GS Naval Air Systems Command (Code Ident 30003) 642AS5610 642AS5 6 39 SA49 7 7 52 Fuze, Guided Missile, FMU-l41/B. Shipping and Storage Container, Packing and Marking. Test Set, Fuze and Probe (Harpoon). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-
14、,-,-MIL-F-85475 13 9999906 0364965 3 Ei MIL-F-85475 (AS) SA49 7 753 Fixture, Explosive Train Drop. SA4980 16 Fixture, Vibration. SA498017 Fixture, Jolt. SA4980 18 Fixture, Forty-Foot Drop. SA49 80 19 Fixture, Transportation Vibration. 20495 7 7 SAS 8 7 6 O 62 PUBLICATIONS Naval Weapons Center (Code
15、Ident 12934) Reg Memo 335-196-76 Cup, Booster. Fixture, Shock. Harpoon Guided Missile Fuze and Pres- sure Probe Test Set SA497752 Operating Instructions. (Copies of specifications, standards, drawings, and publications re- quired by manufacturers in connection with specific acquisition functions sho
16、uld be obtained from the contracting activity or as directed by the contracting officer.) 2.1.3 Other publications. The following document forms a part of this specification to the extent specified herein. which is indicated as DoD adopted shall be the issue listed in the cur- rent DoDISS and the su
17、pplement thereto, if applicable. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) The issue of the document ASTM A 108 Steel Bars, Carbon, Cold-Finished, Standard Quality. (Application for copies of ASTM publications should be addressed to the American Society for Testing and Materials, 1916 Race S
18、treet, Philadelphia, Pennsylvania 19103.) (Industry association specifications and standards are generally avail- able for reference from libraries. They are also distributed among technical groups and using Federal agencies.) 2.2 Order of precedence. In the event of a conflict between the text of t
19、his specification and the references cited herein, the text.of this specification shall take precedence. 4 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-85475(AS) 3. REQUIREMENTS. 3.1 Item description. The fuze was designed in accordance wi
20、th MIL- STD-1316 and is an electromechanical device that maintains an out-of-line explosive train and an electrical firing circuit in the safe (open) position until certain prerequisite events have occurred after missile launch. The general configuration of the fuze is shown on Figure 1. 3.1.1 Gover
21、nment-furnished property. 3.1.1.1 Autonomous components. When specified in the contract or purchase order, the Government will furnish the contractor with the following components for each fuze produced under a speciied contract (see 6.2.1): a. Four MARK 9 MOD O Explosive Leads (see OS-8164). b. One
22、 MARK 4 MOD O Triggering Device (see WS-2183). c. Two MARK 85 MOD O Electric Detonators (see WS-1639). d. Two MARK 71 MOD 1 Electric Detonators (see MIL-u-85294). 3.1.1.2 Support equipment. When specified in the contract or pur- chase order, the Government will furnish the independent test facility
23、designated in the contract or purchase order with the following support equipment to perform the environmental tests specified herein (see 6.2.1): a. One explosive train drop fixture (see Drawing SA497753). b. One vibration fixture (see Drawing SA498016). c. One jolt fixture (see Drawing SA498017).
24、d. One forty-foot drop fixture (see Drawing SA498018). e. One transportation vibration fixture (see Drawing SA498019). f. One shock fixture (see Drawing SA2876062). 3.1.2 Government-loaned property. When specified in the contract or purchase order, the Government will loan the contractor and the ind
25、ependent test facility designated in the contract or purchase order one Fuze and Probe Test Set, Harpoon (see SA497752), referred to herein as the test set (see 6.2.1). 3.2 First article. When specified, a sample shall be subjected to first article inspection (see 4.4. and 6.2.1). 5 Provided by IHSN
26、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-$5475 (AS) 3.3 Design and construction. 3.3.1 Production drawings, The fuze shall meet the requirements of and be manufactured and assembled in accordance with the drawings and documents listed on Drawing 642AS56
27、10 (see 4.7.9). 3.3.2 Standards of manufacture. 3.3.2.1 Product clqanliness. Product cleanliness shall meet the re- quirements of MIL-STD-1246, Level 200, No oils or solid lubricants of . G Mh rh mI, “I, rl (d u 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
28、rom IHS-,-,-MIL-F-85q75 13 7999906 0364969 O I! MIL-F-85475 (AS) U a g $4 O w IA ci .rl QI Ici P o o U QI w lu rn QI U c, VJ .rl !i u ffi H H H I -1 I m I R “1 d (d U VJbo d Ici *rl aJa I“ O cn F/ I u3 u)“ -1 “mi+ .I I c, QIc, rna VI L) z c,u c, w ow O c, U 5. 5 w ffi ao rn born QI !z .;i QI aIci I
29、I 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-HIL-F-85q75 13 W 779970b 03bY970 7 = . . 1.4M . S 1A S1B R2, 4, 5, 11, DI, 4, 42 Test Al A2 A3 A4 A5 TABLE IV. Resistance (armed condition) requirements for configuration A. Ohmmeter scale reading-
30、i/ 1M 1M IM 1M 1M Test set switch c+ 12 9 7 10 2 )sitions C- 8 8 8 8 10 Lower limit Open Open 600K 140K 142K Upper I (see Figure 2) limit R1, 4, 11, 13, 14, 185K I Q2, D2 170K I R14, S1E IReadings are obtained by using a Hewlett-Packard VOM Model 3469B (part of test set SA497752). 3.4.1.1 Resistance
31、 (safe condition). While in the safe condition (see 6.3.1), the fuze shall meet the resistance requirements of Table II for confiauration A, Table I. and the reauirements of Table III for configurations B and C , Table I (see 4.7.1: 1). 3.4.1.2 Resistance (armed condition). While in the armed condit
32、ion (see 6.3.2), the fuze shall meet the resistance requirements of Table IV for configuration A, Table I, and the requirements of Table V for con- figurations B and C, Table I (see 4.7.1.2). 3.4.2 Mechanical operability. The fuze shall meet the mechanical operability requirements of Table VI for ea
33、ch of the three configurations (A, B, and C) specified in Table I. Beginning and ending times are indi- cated by the beginning and ending switching functions (see 4.7.2). requirements of Table VI represent fuze calibration times and not fuze arming times.) (The 3.4.3 Seal. At the contractors facilit
34、y, the leakage rate of the * surizing and sealing. Anytime after shipment from the contractors facil- fuze shall be not greater than 5 x meters per second (std atm cm3/s) when measured within 4 hours after pres- ity, the leakage rate of the fuze shall be not greater than 5 x atm cn“/s (see 4.7.3). s
35、tandard atmosphere cubic centf- ctd a 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Test Al Al (cal)- 21 3/ (net)- A2 A2 2/ A2 3/ (cal)- (net)- A3 A4 A5 - flIL-F-bS47S 13 9999906 0364971 9 I MIL-F-85475 (AS) TABLE V, Resistance (armed condition)
36、requirements for confieuration B. Ohmmeter scale reading- i/ 10 ohms 10 ohms 1 10 ohms 10 ohms . 100K 100K 1M - Test set switch positions C+ - 12 12 a 9 9 I 7 10 2 - C- 8 8 . 8 8 . 8 8 10 1/ Resistance- Conf igi B Lower limit . . o oh . .I. o ohm 14K 12K 130K Upper limit . . 5 ohms . . 5 ohms 2 1K 1
37、9K 185K :ation - c4 Lower limit . . o ohm . . o ohm 13K 11K 125K Upper limit . . 6 ohms . . 6 ohms 22K 20K 190K Items checked (see Figure 2) * . SQi, SQ2, S1A . . SQ3, SQ4, S1B s1c R1, 4, 11, 13, 14, D2, Q2 R14, S1E Ileadings are obtained by using a Hewlett-Packard VOM Model 3469B -Calibration readi
38、ngs are taken at calibration socket (part of test ?/Net values are the standard readings minus the calibration readings. 4i/These resistance checks performed during environmental test only. (part of test set SA497752). set 88497752). 10 1 Provided by IHSNot for ResaleNo reproduction or networking pe
39、rmitted without license from IHS-,-,-Test Solenoid Vdc All go All go No go Timing Burst Requirements - MIL-F-5475 13 = 777770b 03b4772 O H MIL-F-85475 (AS) TABLE VI. Mechanical operability requirements for confieurations A. B. and C. Pressure applied 33.0 20.5 inches water 40.0 k0.5 inches water 25.
40、0 f0.5 inches water 2.0 20.1 lb/in 2 A and B (Vdc) 22 21 . 24 +1 24 f1 10.0 20.3 lbfn 1 24 fl if less than 1 Vdc, the fuze is safe to handle. 4.7.1 Electrical. The tests of 4.7.1.1 and 4.7.1.2 shall be conducted on fuzes during and after assembly as specified on the applicable figures. Resistance me
41、asurements shall be performed using the test set (see 3.1.2 and 3.4.1), or standard test equipment that meets the requirements of 4.1.1. Required test data shall be recorded on the inspection record (see Figure 6). 4.7.1.1 Resistance (safe condition). To determine conformance to 3.4.1.1, verify the
42、resistance requirements of Tables II and III with the fuze in the safe condition (see 6.3.1). The resistance shall be within the limits specified in the table. 4.7.1.2 Resistance (armed condition), To determine conformance to 3.4.1.2, verify the resistance requirements of Tables IV and V with the fu
43、ze in the armed condition (see 6.3.2). The tests for configuration C (see Table I) of Table V shall be performed during the environmental inspection sequence of Figure 9. The resistance shall be within the limits specified in the tables, laios 18 Provided by IHSNot for ResaleNo reproduction or netwo
44、rking permitted without license from IHS-,-,-MIL-F-85q75 13 m 7777706 0364380 T 4.7.2 Mechanical operability. To determine conformance to 3.4.2, verify the mechanical operability requirements of Table VI using the test set described in Reg Memo 335-196-76 (see 3.1.2 and 3.4.1), or standard test equi
45、pment with a two-channel (minimum) recorder and acoustic pickup, which meets the requirements of 4.1.1. Timing shall be determined from the output record chart as shown on Figure 3. Record test results on the inspection record (see Figure 6). NOTE: An acoustic pickup shall be used as an audio aid to
46、 verify fuze arming and resetting (see 4.3.1). Timing failure on min side: Timing failure on max side: Operability otherwise: M104 C1 M103 4.7.3 - Seal. To determine conformance to 3.4.3, test the fuze in accordance with MIL-STD-202, Method 112, Test Condition C, Procedure IV. Trichlorotrifluoroetha
47、ne (MIL-T-14757) or isopropyl alcohol (TT-1-735, grade optional) may be used as alternative immersion fluids for gross leak testing. At the contractors facility, the fuze shall be tested within 4 hours after pressurizing and sealing and the results shall be recorded on the inspection record (see Fig
48、ure 6). 1x1 4.7.4 Safety determination. To determine conformance to 3.4.4, test the fuze as follows: a. If required, reset the fuze to the safe condition (see 6.3.1) using the test set (see 4.3.1). Discharge the firing capaci- tor by shorting pins 5 and 8 together for 2 minutes minimum. Verify that
49、the firing capacitor has been discharged by mea- suring the voltage across pins 5 and 8; if less than l Vdc, the fuze is safe to handle. b. Visually verify that the fuze is in the safe condition (see 6.3.1), as evidenced by a white letter “SIt on a green back- ground centered in the window located on the fuze housing. 19 Provided by IHSNot for Resa
