1、MIL-S-5307 13 m 97777Ub 0439037 b I 6 MIL-S-85309(AS) . .- -6 3 January 1980 MILITARY SPECIFIC AT10 N Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: C-ommanding Officer, Naval Air Engineering C
2、enter, Engineering Specifications and Standards Department (ESSD), Code 93, Lakehurst, NJ 08733, by using the self-addrewed Standardization Document Improvement Proposal (DD form 1426) appearing at the end of this document, or by letter. - SQUIB, ELECTRIC, SINGLE BRIDGEWIRE This specification is app
3、roved for use by Naval Air Systems Command, Depart- ment of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE. 1.1 Scope. This specification establishes the requirements for manufacture and acceptance of a single bridgewire electric squib, refe
4、rred to herein as the squib. 2. APPLICABLE DOCUMENTS. 2.1 Issues of documents. The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of this speci- fication to the extent specified herein. SPECIFICATIONS MILITAR Y M 1L-I- 2 3 6 5 9 initfa
5、tor, Electric, Design and Evaluation of MIL-C-45662 Calibration System Requirements. _. Licensed by Information Handling ServicesMIL-S-5309 L3 9999906 0434038 I 1 M IL-S-85309(AS) c STANDARDS FEDERAL F ED-STD-1 O 2 MILITARY MIL-STD-1 O 5 MIL-STD-129 M IL-STD-2 02 MIL-STD-331 MIL-STD-810 MIL-STD-831
6、DRAWINGS Naval Air Systems Command (Code Ident 30003) 1137AS225 OTHER PUBLICATIONS Naval Sea Systems Command (Code Ident 53711) NAVORD Report 2101 Preservation, Packaging, and Packing Levels. Sampling Procedures and Tables for inspection by Attributes. Marking for Shipment and Storage. Test Methods
7、for Electronic and Electrical Compo,nent Parts. Fuze and Fuze Components, Environmental and Performance Tests for. Environmental Test Methods. Test Reports, Preparation of. Squib, Electric, Single Bridgewire. Statistical Method Appropriate for Evaluation for Fuze Explosive Train and Reliability. (Co
8、pies of specifications, standards, drawings, and publications required by contractors in connection with specified procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2 Other publications. The following document forms a part of this spec
9、ification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. 2 Licensed by Information Handling ServicesMIL-S-85309 13 W 997990b O434039 T I 1 MIL-S-85309(AS) U CODE OF FEDERAL REGULATIONS 49 CFR 171-178
10、 Transportation. (Application for copies should be addressed to the Superintendent of Documents, Government Printing Office, Washington, D.C. 20402.) 3. REQUIREMENTS. 3.1 Item definition. The squib is an electrically initiated pyrotechnic device designed to function as the first element in the firin
11、g train of a rocket motor. The squib is a single bridgewire type, Class A, as defined in MIL-1-23659. 3.2 Characteristics. 3.2.1 Performance. 3.2.1.1 Electrical. 3.2.1.1.1 Electrostatic discharge. The squib shall not function when sub- Dieletric strength. The squib shall not function with the appli-
12、 jected to an electrostatic discharge of 25,000 I500 volts (V). cation of 500 225 volts direct current (Vdc) between the shorted leads and the case for 60 seconds (s) minimum. 3.2.1.1.2 3.2.1.1.3 Bridgewire sensitivity. The squib shall not function with the appli- cation of 1 ampere direct current (
13、Adc) applied through the leads for 5 minutes over a temperature range from -80 to +200 degrees Fahrenheit (OF). 3.2.1.1.4 3.2.1.2 - Seal. The leak rate of the squib shall not exceed 1 x Bridgewire resistance. Squib bridgewire resistance shall be 1.0 50.1 ohm. atmospheric cubic centimeters per second
14、 (std atm cm 3/s) with one atmosphere differential pressure. standard 3.2.1.3 Radiographic. The squib shall show no evidence of loose powder, voids, or fissures in the charge or insulators. 3.2.1.4 Function. 3.2.1.4.1 All-fire sensi t ivit y. 3.2.1.4.1.1 All-fire, 3 amperes (A). The squib shall func
15、tion with the appli- cation of 3.0 kO.1 A to the leads, and shall produce a pressure output of 170 pounds per square inch (lb/in 2, in a 5 cubic centimeter (cm 3) pressure vessel within 5 milliseconds (ms) maximum after fire switch closure. Licensed by Information Handling ServicesM IL-S-85309( AS)
16、3.2.1.4.1.2 All-fire Bruceton. The squib shall have a calculated 3 A maximum, 3.2.1.4.2 No-f ir e sensit ivit p. 3.2.1.4.2.1 No-fire, 1 A/1 Watt (W), 5 minutes.) The squib shall not function with the application of 1 A of current and an associated power of 1 W minimum to the leads for 5 minutes mini
17、mum. 3.2.1,4.2.2 No-fire Bruceton. The squib shall have a calculated 1 A minimum, 1.0 percent no-fire point with a 95 percent confidence level. 3.2.2 Environmental. The squib shall not be damaged, nor shall safety or subsequent performance be degraded, by exposure to any natural combination of servi
18、ce use environments. These shall include, but shall not be limited to, the following environments. Test 103, Procedures 1 and 2, and shall be safe to handle and dispose of following the test. 3.2.2.2 Shock. The squib shall meet the shock requirements of MIL-1-23659, and shall function and output as
19、specified in 3.2.1.4.1.1 following the test. 3.2.2.3 Temperatur e-shock/humidit y/aiti tude. The squib shall meet the temperature-shock/humidity/altitude requirements of MIL-1-23659, and shall function and output as specified in 3.2.1.4.1.1 following the test. 3.2.2.4 Vibration. The squib shall meet
20、 the requiremnts of MIL-STD-810, Method 514.2, Procedure V, Part 2, Curve AH, and shall function and output as specified in 3.2.1.4.1.1 following the test. of MIL-1-23659, and shall function and output as specified in 3.2.1.4.1.1 following the test. 99 percent all-fire point with a 95 percent confid
21、ence level. 3.2.2.1 Forty-foot droe. The squib shall meet the requirements of MIL-STD-331, 3.2.2.5 Six-foot drop. The squib shall meet the six-foot drop requirements 3.3 Design and construction. 3.3.1 Production drawings. The squib shall be manufactured and assembled in accordance with Drawing 1137A
22、S225 and as specified herein. 3.3.2 Standards of manufacture. The squib shall be manufactured, inspected, and tested to meet the requirements specified herein. 3.3.3 Workmanshie. The requirement for first class workmanship shall not preclude the use of time- and labor-saving techniques, provided tha
23、t reliability and safety will in no way be jeopardized. 3.3.4 Test equipment calibration. Test equipment shall be calibrated and main- tained in accordance with a plan meeting the requirements of MIL-C-45662. When c specified in the contract or purchase order, the calibration plan shall be approved
24、by the Government prior to use (see 6.2.2). 4 Licensed by Information Handling ServicesMIL-S-85309 13 W 9797906 Oq3L1041 8 I MIL-S-85309( AS) 3.3.5 Test plan and test procedures. When specified in the contract or purchase order, the contractor shall prepare and submit to the Government for approval
25、prior to testing, a test plan and test procedure in accordance with MIL-STD-831 (see 6.2.2). 3.4 First article. 3.4.1 Preproduction sample. Unless otherwise specified in the contract or purchase order, the contractor shall deliver a preproduction sample of 250 squibs to the testing activity designat
26、ed in the contract or purchase order for prepro- duction testing (see 6.2.1). The preproduction sample shall be manufactured using the same methods, materials, processes, and procedures proposed for production. Any production prior to acceptance of the preproduction sample is at the risk of the cont
27、ractor. . 4. QUALITY ASSURANCE PROVISIONS. 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements specified herein. Except as otherwise specified in the contract or purchase ord
28、er, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless dis- approved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections a
29、re deemed necessary to ensure supplies and services conform to prescribed requirements (see 6.2.1). 4.1.1 Classification of inspections. The inspection requirements specified herein are classified as follows: (a) Preproduction inspections (see 4.1.2.1). (b) (c) Quality conformance inspections (see 4
30、.2). In-process inspections (see 4.1.2.1, 4.2, and 4.4.1). 4.1.2 Special tests and examinations. 4.1.2.1 Preproduction sample. Unless otherwise specified in the contract or purchase order, the first 250 squibs produced under any contract shall constitute the preproduction sample (see 3.4.1 and 6.2.1
31、). Prior to environmental testing, the preproduction sample shall be subjected to the in-process inspections of Table I, Group I, The preproduction sample shall then be subjected to the tests of Table I, Groups II through IX, in the sequence shown. Failure of any squib to meet any of the acceptance
32、criteria specified herein shall cause rejection of the preproduction sample. 4.2 Quality conformance inspections. Prior to formation of the inspection lot, the squib shall be subjected to the in-process inspections of Table II, Group A. The inspection lot (see 4.2.1) shall then be subjected to accep
33、tance testing of Table II, Group B through Group E. Failure of any portion of the inspection lot sample to meet the requirements specified herein shall cause rejection of the lot represented. 5 Licensed by Information Handling ServicesMIL-S-85307 13 W 7777706 0434042 T I MIL-S-8 53 09( AS) TABLE I.
34、Test sequence for preproduction sample. Test or examination Group I (250 squibs) (in-process) Drawing requirements Electrical Seal Radiographic Grou II (6 squibs) -da Bridge wire resistance All-fire, 3 A Group III (6 squibs) Forty-foot drop Group IV (60 squibs) Temperature-shock/humidit y/altitude G
35、roup V (20 squibs) Vibra tion Grou VI (6 squibs) -5- Six- oot drop Group VI1 (60 squibs from Group IV? 20 from Group V, and 52 from Group I) Bridgewire resistance Dielectric strength No-fire, 1 A/1 W All-fire, 3 A Group VI11 (50 squibs) No-fire Bruceton Srou IX (50-squibs) _PT_ All- ire Bruceton Req
36、uirement paragraph 3.3.1, 3.3.3 3.2.1.1 3.2.1.2 3.2.1.3 3.2.2.2 3.2.1.1.4 3.2.1.4.1.1 3.2.2.1 3.2.2.3 3.2.2.4 3.2.2.5 3.2.1.1.4 3.2.1.1.2 3.2.1.4.2.1 3.2.1.4.1.1 3.2.1.4.2.2 3.2.1.4.1.2 Method paragraph 4.4.1.1 4.4.2 4.4.3 4.4.4 4.4.6.2 4.4.2.4 4.4.5.1.1 4.4.6.1 4.4.6.3 4.4.6.4 4.4.6.5 4.4.2.4 4.4.2
37、.2 4.4.5.2.1 4.4.5.1.1 4.4.5.2.2 4.2.1 Inspection lot. An inspection lot of squibs, when ordered, shall contain not less than 151 nor more than 500 squibs, including those squibs required for destructive tests (see 6.2.1). An inspection lot, as defined in MIL-STD-105, shall consist of completed unit
38、s fabricated froin the same materials, using the same processes and procedures under the same conditions, and offered for inspection at the same time. Each squib shall be serialized in order of consec- utive assembly. _. 6 Licensed by Information Handling ServicesHIL-S-5309 13 997790b 01.134043 L I
39、MIL-S-85 309( AS) - Requirement Test or examination paragraph Group A (in-process) TABLE II. Inspection lot test sequence. Group B (6 squibs) Forty-foot drop 3.2.2.1 r Group C (26 squibs) Vibration Bridgewire. resistance Dielectric strength No-fire, 1 A/1 W All-fire, 3 A Grou D (6 squibs) -5- Six- o
40、ot drop Group E (remainder of lot of 151 Packaging, packing, and marking to 500 squibs) Drawing requirements Electrical Seal Radiographic 3.2.2.4 3.2.1.1.4 3.2.1.1.2 3.2.1.4.2.1 3.2.1.4.1.1 3.2.2.5 Section 5 3.3.1, 3.3.3 3.2.1.1 3.2.1.2 3.2.1.3 I I Method paragraph 4.4.1.1 4.4.2 4.4.3 4.4.4 4.4.6.1
41、4.4.6.4 4.4.2.4 4.4.2.2 4.4.5.2.1 4.4.5.1.1 4.4.6.5 4.5 4.2.2 Inspection lot sample. Unless otherwise specified herein, a sample of 38 squibs shall be randomly selected from the inspection lot. The inspection lot represented by the sample shall be rejected when any one or more of the following defec
42、ts occurs in a single squib: (a) When any squib functions other than when specified in the functional test of 4,4.5.1. (b) When any squib fails to function on the first firing attempt. (c) When one or more of the requirements of Section 3 are not met. 7 Licensed by Information Handling ServicesMIL-S
43、-85309 13 W 9999906 0439044 3 I I 4.3 Test conditions and provisions. . 4.3.1 Test conditions. Unless otherwise specified herein, the test methods of 4.4 shall be performed under the following conditions: (a) Temperature: (b) Altitude: (c) Humidity: Room ambient of 65 25 to 95 25F. Normal ground ele
44、vation. Maintained between 10 and 70 percent relative humidity. 4.3.2 Test and inspection equipment facilities. The contractor shall furnish and maintain all necessary test equipment, facilities, and personnel necessary to perform all acceptance tests. The test .equipment shallbe of sufficient - acc
45、uracy and quality to permit satisfactory performance of the required tests and examinat ions. 4.3.3 Test equipment calibration. Test equipment shall be calibrated in accord- ance with 3.3.4. 4.3.4 Test plan and test procedures. Test plan and test procedures shall be in accordance with 3.3.5. 4.3.5 G
46、ages. The contractor shall provide whatever gages are necessary and adequate to ensure that the material to which this specification applies shall meet the dimensional requirements shown on Drawing 1137AS225. When specified in the contract or purchase order, the Government will furnish drawings of p
47、ertinent Navy final inspection gages (see 6.2.1). 4.4 Test methods. 4.4.1 In-process inspections. 4.4.1.1 Drawing inspection. The drawing inspection shall be performed on each lot of squibs in accordance with the sampling plan and Drawing 1137AS225. 4.4.2 Electrical. To determine conformance with 3.
48、2.1.1, the following test shall be performed. WARNING The squib is a pyrotechnic-loaded item; suitable safety precautions shall be observed (see 6.3). a Licensed by Information Handling Services MIL-S-85309 13 W 9999906 ClLi34045 5 I 4 M IL-S- 8 5 3 O 9 (AS) 4.4.2.1 Electrostatic discharge. To deter
49、mine sensitivity to electrostatic discharge, connect a 500 picofarad (pF) 25 percent capacitor charged to 25,000 1 500 V, and a 5,000 ohm f 5 percent resistor in a series circuit between the two shorted squib leads and the squib case. The series connection shall be rnain- tained for 60 s minimum. Switching on this circuit shall be accomplished by closing a vacuum relay. The squib used for this test shall be temperature-conditioned at 70 25V for 2 hours minimum. To be acceptable, the squib shall meet the requirements of 3.2.1.1.1. Dielectric strength. To determine the dielect
