1、MIL-F-5377 13 W 7777706 0364752 W MIL-F-85399(AS) 14 November 1980 MILITARY SPECIFICATION FUZE , GUIDED MISSILE, FMU-l38/B 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 De
2、fense. I 1. SCOPE, 1.1 Sco e. This specification establishes the requirements for manu- facture % an acceptance of the FMU-l38/B Guided Missile Fuze, referred to herein as the fuze. 2. APPLICABLE DOCUMENTS. 2.1 Issues of documents. The following documents of the issue in effect on date of invitation
3、 for bids or request for proposal form a part of this Specification to the extent specified herein. SPECIFICATIONS FEDERAL UU- T -81 Tag, Shipping and Stock. L-T-100 Tape, Pressure-Sensitive Adhesive , Polyester Film. TT-1-735 Isopropyl Alcohol. Beneficial comments (recommendations , additions, dele
4、tions) and any pertinent data which may be of use in improving this docu- ment should be addressed to: Commanding Officer, Naval Air Engineering Center, Engineering Specifications and Standards Department (ESSD) , Code 93, Lakehurst, N J 08733, by using the self -addressed Standardization Document I
5、mprovement Pro- posal (DD Form 1426) appearing at the end of this document, or by letter. THIS D$Jcur:zpJT Qgjwxqnl“ d OLil wwa d -Net values are the normal readings minus the calibration readings. TABLE IV. Resistance (armebcondition) requirements Toi; configiirations B and C. Resistance 1 Test mod
6、e 3469 Ohmmeter scale reading Configuration Items checked (see Figure 2) Switch positions B - C- - Lower limit Lower limit upper limit 15 kohms . Open 700 ohms 700 ohms - - 0.45 ohm 100 knhms 100 kohms 1 kohm I. kohm 1 ohm 1 ohm - 5 10 12 8 3 3 - - 35 kohms Open 500 ohms 500 ohms - -”- o ohm 20 kohm
7、s Open 500 ohms 500 ohms - - O ohm Al A2 - A3 A4 A5 A5 i/ (Cal)- (Net)? A5 I -Calibration readings are taken at Calibration socket. ZNet values are the normal readings minus the calibration - readings. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
8、MIL-F-5377 13 a 777970b 0364757 O W MIL-F-85399 (AS) 3.2.1.1.1 Resistance (safe condition). The fuze shall meet the resist- ance requirements of Table II for each of the three configurations (A, B, and C) specified in Table I while in the safe condition (see 6.3.1). 3.2.1.1.2 Resistance (armed condi
9、tion). The fuze shall meet the resistance requirements of Table III for configuration A, Table I, while The fuze shall meet the resistance requirements of Table IV for configurations B and C, Table I, while in the armed condition. , in the armed condition (see 6.3.2). 3.2.1.2 Mechanical operability.
10、 The fuze shall meet the mechanical operability requirements of Table V for each of the three configurations (A, B, and C) specified in Table I. Beginning and ending times are in- dicated by the beginning and ending switching functions. (The require- ments of Table V represent fuze calibration times
11、 and not fuze arming times, ) TABLE V. Mechanical operability requirements for configurations A, B, and C. I Isolenoid Vdc I Requirements I Configuration Test 1 Pressure applied (Vdc) and BI (Vdc) I A and B 1/ All go I 33.0 +O. 5 inches water I 22 kl I - I Arm- 1/ All go 40.0 f0.5 inches water - 22
12、fl Arm- No go 25.0 20.5 inches water 24 +1 28 il Remain safe Timing 2 2.0 fO.l lb/in 24 21 . 28 fl 11.0 f1.5 seconds- 2/ 2 I 24 21 I 28 f1 1 Arm- i/ Burst I 10.0 f0.3 lb/in -Rotor fully rotated and locked. -1 C i/ I/ Arm- Arm- Remain safe 11.75 k2.25 2/ seconds- 1/ Arm- LRotor fully rotated and lock
13、ed with time measured as shown on Figure 3. 3.2.1.3 Seal. At the contractors acility, the leakage rate of the fuze shall notexceed 5 x standard atmosphere cubic centimeters per second (std atm cm3/s) when measured within 4 hours after pressurizing and sealing. leakage rate of the fuze shall not exce
14、ed 5 x Anytime after shipment from the contractors facility, the std atm cm3/s. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-5379 13 W 7797906 036g760 7 W7 3.2.1.4 Safety determination. The fuze shall be in the safe condition (see 6.3.1) b
15、efore and after the capacitor is discharged into a firing cable by application of 28 +1 volts direct current (Vdc) and 5.6 micro- farads (pF) minimum across pins 12(+) and 8(-) of the connector. No explosive component shall initiate. 3.2.2 Environmental conditions. The fuze shall not be damaged nor
16、shall safety or subsequent performance be degraded by exposure to the following environments. 3.2.2.1 Transportation vibration-temperature . The fuze shall meet the requirements of MIL-STD-331, Test 119, Proeedure 2, and shall be safe (see 6.3.3) and operable (see 6.3.4) after exposure to the enviro
17、nment of 4.4.5.1. 3.2.2.2 Shock. The fuze shall meet the requirements of MIL-STD-202, Method 213,t Condition JI except the amplitude shall be 15 +1 gravity units (9). after exposure to the environment of 4,4.5.2. The fuze shall be safe (see 6.3.3) and operable (see 6.3.4) 3.2.2.3 Temperature and hum
18、idity. The fuze shall meet the require- ments of MIL-STD-331, Test 105, either method, and shall be safe (see 6.3.3) and operable (see 6.3.4) after exposure to the environment of 4.4.5.3. 3.2.2.4 Captive flight vibration (safe condition). While in the safe condition (see 6.3.1), the fuze shall meet
19、the requirements of MiL- STD-810, Method 514, Procedure VI Part 2, Curve AE, except random vibration shall be applied for 2 hours minimum along each of the three mutually perpendicular axes for a total of 6 hours. The fuze shall be safe (see 6.3.3) and operable (see 6.3.4) after exposure to the envi
20、ron- ment of 4.4.5.4. * 3.2.2.5 Missile flight vibration (armed condition). While in the armed condition (see 6.3.2). the fuze shall meet the requirements of MIL-STD-810, Method 514, Procedure VI Part 2, spectkal density of 0,05 gravity unit squared per Hertz (g2/Hz), except random vibration shall b
21、e applied for 10 minutes minimum along each of the three mutually perpendicular axes for a total of 30 minutes. The fuze shall remain armed, explosive components shall not initiate, and the switches or associated components shall not fail in any way as to inter- fere with initiation of the leads dur
22、ing and after exposure to the environment of 4.4.5.5. 3.2.3 Environmental safety. 3.2.3.1 Jolt. The fuze shall meet the requirements of MIL-STD-331, Test 101, Procedure II, and shall be safe to handle, store, and trans- port after exposure to the environment of 4.4.6.1. During exposure, a 9 Provided
23、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.3 MIL-F-5377 13 777770b 03bLl7bL 7 MIL - F-85399 (AS) no explosive component shall initiate. After exposure, the fuze shall fail to arm or, if arming occurs, the fuze shall arm in not less than the minimum tim
24、e specified in Table V. The fuze shall meet the requirements of MIL-STD-331, Test 103, Procedure 1, and the requirements specified , below after exposure to the environment of 4.4.6.2: 3.2.3.2 Forty-foot drop. a. b. C. d. No explosive components beyond the detonator shall have initiated. No loose ex
25、plosive powder shall be present in the housing (Drawing 642AS5551). The lead rotor (Drawing 642AS5422) shall be in the safe position (see 6.3.1) and unable to be turned to the armed position (see 6.3.2). The piston shaft (Drawing 642AS5495) shall be in the safe position (see 6.3.1) and locked by the
26、 piston lock (Drawing 642AS5538) and the solenoid cam (Drawing 642AS5334). e. The fuze shall be safe to handle .and dispose of. -. 32.4 Explosive train. 3.2.4.1 Static detonator safety. The fuze shall meet the requirements of MIL-STD-331, Test 115. There shall be no evidence of detonation, burning,
27、charring, scorching , melting, or rupturing of the explosive leads when the detonators are initiated with the arming rotor in the safe position (see 6.3.1). Smudging of the surfaces of the leads, due to deposits resulting from initiation of the detonators , is acceptable. The fuze housing shall not
28、rupture, and any particles of explosive output ejected from the fuze housing through the viewing window shall not be hazardous to personnel or equipment. 3.2.4.2 Explosive-train output. The explosive train of the fuze, in both the instantaneous mode (see 6.3.5) and the delay mode (see 6.3.6), shall
29、produce an average depth of dent of 0.030 inch minimum when armed and detonated on a steel dent block (see Figure 4). 3.2.5 Visual. The fuze shall meet the following requirements: a. There shall be. no evidence of external damage, such as cracks, broken windows , dents , or other blemishes , which m
30、ay interfere with functioning or fit at the next assembly. 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-5377 13 M 777770b 03b47b2 O M b. C. The rotor shall evidenced by a centered in the MIL-F-85399 (AS) be in the safe position (see 6.3.1
31、), as white letter IStt on a green background window located on the fuze housing. The safety inspection tag (Drawing 1186AS303) shall be properly signed by both the contractor and Government inspectors, and securely attached to the fuze housing by a lead and wire seal in accordance with MS51938-5, T
32、ype I, to indicate that a successful safety test (see 3.2.1.4) has been performed. The contractors identification symbol shall be pressed into the lead seal. 3.3 First article (preproduction sample). Unless otherwise specified in the contract or purchase order, the contractor shall furnish a pre- pr
33、oduction sample of 30 fuzes to the testing activity designated in the contract or purchase order for first article inspection and approval (see 4.1.2.1 and 6.2.1). The preproduction sample shall be manufac- tured using the same methods , materials , processes , and procedures proposed for production
34、. Any production prior to acceptance of the preproduction sample shall be at the risk of the contractor. 3.4 Construction. The construction of the fuze shall meet the require- ments specified herein and on the drawings and documents listed on DL 1186AS300. 3.4.1 Production drawings. The fuze shall m
35、eet the requirements of and be manufactured and assembled in accordance with the drawings and documents listed on DL 1186AS300. 3.4.2 Standards of manufacture. 3.4.2.1 Product cleanliness. Product cleanliness shall meet the require- ments of MIL-STD-1246, Level 200. No oils or solid lubricants of an
36、y kind shall be used on any part of the fuze after final cleaning of com- ponents, except as specified on the drawings or herein. 3.4.2.2 Working environment. The working environment shall meet the minimum levels and requirements of MIL-STD-1695. 3.4.3 Test equipment calibration. When specified in t
37、he contract or purchase order, test equipment shall be calibrated and maintained in accordance with a plan meeting the requirements of MIL-C-45662. The calibration plan shall be prepared in accordance with the Data Iten Description (DID) cited in 6.2.2 and shall be approved by the Govern- ment prior
38、 to use. 11 -? Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-85379 13 7779706 03bL1763 2 MIL-F-85399(AS) 3.4.4 Test plan and test procedures. When specified in the contract or purchase order, the contractor shall prepare a test plan and test
39、procedures in accordance with the DID cited in 6.2.2. The test plan and test procedures shall be approved by the Government prior to use. 3.4.5 Fuze inspection record. When specified in the contract or purchase order, an inspection record, as shown on Figure 5 and pre- pared in accordance with the D
40、ID cited in 6.2.2, shall be properly filled in for each fuze produced under a specified contract. required test data shall be extracted from the inspection and accept- ance records maintained by the contractor. 3.4.6 Workmanship. The fuze , including all parts and accessories , shall be manufactured
41、 in a thoroughly workmanlike manner in accordance with the applicable drawings and documents specified herein and on DL 1186AS3O0. Workmanship shall meet the requirements of MIL-STD-454 , Requirement 9. 3.4.6.1 Solderin . Preparation , procedures , and requirements for soldering o f-9 electrical con
42、nections shall be in accordance with WS-6536. Mechanical soldering shall be in accordance with MIL-S-6872. The 4. QUALITY ASSURANCE PROVISIONS. 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the per- formance of all
43、inspection requirements specified herein (see 6.2. l). Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein , unless disapproved by the Government (see 6.2.
44、1). The Government reserves the right to perform or witness any of the inspections set forth in this specification where such inspections are deemed necessary to ensure that supplies and services conform to prescribed requirements. herein are classified as follows: 4.1.1 Classification of inspection
45、s. Inspection requirements specified a. b . Preproduction sample inspections (see 4.1.2.1). Quality conformance inspections (see 4.2). 1. Individual unit acceptance inspections (see 4.2.3). 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-853
46、77 13 7777706 0364764 i.I W MIL-F-85399 (AS) 4.1 2 Special tests and examinations. 4.1.2.1 Preproduction sample. The preproduction sample of 30 fuzes shall be su-dual unit acceptance inspections of Fig- ure 6 (see 4.2.3). The preproduction sample shall then be subjected to the inspections of Figures
47、 7 and 8 in the sequence shown. The inspections of Figure 8 shall be performed at an independent facility designated in the contract or purchase order (see 6.2.1). 4 1.2.1.1 Preproduction sample acceptance and rejection criteria. When subjected to the inspection sequences of Figures 7 and 8, each fu
48、ze of the preproduction sample shall meet the applicable performance requirements of Section 3 on the first and only trial. Defects are classified as CRITICAL or MAJOR, as defined in MIL-STD-105, and are specified on the drawings. The preproduction sample shall be rejected if: a. One or more CRITICA
49、L defects are found, or b. Two or more MAJOR defects are found. NOTE: cause rejection of the preproduction sample , appropriate corrective action shall be taken to prevent recurrence prior to production. Although one MAJOR defect does not 4.2 Quality conformance inspections. The tests and examinations of 4.4 shall be performed to determine that all the requirements of Section 3 have been mit. Tests shall be pe
