1、MIL-1-82437 33 W 7777706 0433335 4 = MIL-1-82437 (OS) 10 May 1966 Superseding MILITARY SPECIFICAT ION WS4817C IGNITER 4 January 1966 This specification has been approved by the Naval Ordnance Systems Command, Department of the Navy. 1. SCOPE 1.1 Scope, This specification covers one type of igniter u
2、sed to ignite a solid propellant. 2. APPLICABLE WCUMENTS 2.1 Applicable documents. The following documents of the issue in effect on date of invitation for bids or request for proposal form a part of this specification to the extent specified herein. SPEC BICATIONS Military MIL-A-9836 Federal QQ-S-6
3、33 QQ-P-416 STANDARDS Militaq MIL-STD-105 MIL-STD-129 MIL-STD-3 50 MIL-STD-3 51 MIL-STD-352 MIL-STD-353 MS-3192 MS-33586 DRAWINGS Bureau of Naval Weapons . DL-1330411 2526678 2526718 Ammunitiion Data Cards Plating, Cadmium (Electrodeposited) Steel, Bars, Carbon, Cold Finished andt KO Rolled, (Genera
4、l Purpose) Sampling Procedures and Tables for Inspection by Attributes Marking for Shipment and Storage Jolt Test for Use in Production of Fuzes Jumble Test for Use in Production of Fuzes Forty (AO) Foot Drop Test for Use in Production of Fuzes Transportation Vibration Test for Use in Production of
5、Fuzes Contact-Electrical, Pin, Crimp, Removable 125OC Metals, Definitions of Dissimilar Container, Shipping and Storage (For Eight Igniters, DL 2526678) Igniter Packing, Preformed Licensed by Information Handling ServicesMIL-1-824.37 (OS) (Copies of specifications, standards, drawings, and publicati
6、ons required by contractors in connection with specific procuring functions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2 Other publications. The following documents form a part of this specification to the extent invoked herein. Unless otherwise indi
7、cated, the issue in effect on date of invitation for bids or re- quest for proposal shall apply. Code of Federal Regulations 49CFR 71-78 Transportation, Interstate Commerce Commission, Explosive and Other Dangerous Articles (Application for copies shall be-addressed to the Superintendent of Document
8、s, Government Printing Office, Washington 25, D.C. Orders should cite thelatest edition and supplements thereto.) 3. REQUIREMENTS 3.1 Classification of requirements. The requirements for the igniter are classified as follows: REQUIREMENT PARAGRAPH General Requirements 3.2 Performance Requirements an
9、d Product Characteristics 3.3 Environmental Requirements 3.4 Operational Service Life 3.5 3.2 General requirements. - 3.2.1 Data. re.quirements. No data is required by this specifica- tion or approval documents referenced in Section 2 unless specified in 2 MIL-I-BZLI37 13 7777706 043131b b = L contr
10、act or purchase order. See 6.2. c Licensed by Information Handling ServicesMIL-1-82437 13 7777906 0431317 8 e r MIL-1-82437 (OS) c 3.2.2 Preproduction sample, Uniess otherwise specified in the contract or purchase order, the preproduction sample of the igniter shall be manufactured using the mefhods
11、 and procedures proposed for production. and is for the purpose of determining that prior to starting production, the contractors production methods are capable of yielding items that comply with the technical requirements of the contract. The sample will be=tested as specified in Section 4 herein 3
12、.2.3 Materials. 3.2.3.1 Materials and treatments of materials. Unless otherwise specified in the contract or purchase order, all materials and treat- ments of materials and parts used in the manufacture of the igniter shall be in accordance with the applicable documents listed on BuWeps Dwg. 2526678
13、. 3.2.3.2 Metals. Metals shall be of the corrosion-resistant type or shall be adequately protected to resist corrosion during the normal storage and service life of the igniter. Unless suitably protected against electrolytic corrosion, dissimilar metals as defined in MS33586 shall not be used in int
14、imate contact. 3.2.4 Definitions. Definitions of terms appear in Section 6. 3.3 Performance requirements and product characteristics. Un- less specified otherwise, the igniter shall satisfy the following performance requirements when tested as specified in Section 4, 3.3.1 Static pressure. The ignit
15、er case, with the electrical terminals and insulating insert installed, shall be capable of with- standing an internal hydrostatic pressure of 10,000 pounds per square inch, gage (psig) for 10 seconds before and after firing, without leaking. 3.3.2 Bridge wire resistance. The igniter shall contain t
16、wo resistive bridge wire elements, either one capable of firing the igniter. The resistance of each bridge element in a loaded igniter shall be 1.2 k 0.15 ohms prior to firing. between pins 1 and 2 and between pins 3 and 2 shall be a minimum of 1.05 ohms at 1.5 volts, direct current, After firing, t
17、he resistance 3 Licensed by Information Handling ServicesMIL-1-82437 13 7799906 0431318 T I I- 3.3.3 Insulation resistance. The resistance prior to firing, be- tween the bridge wire and the case of the loaded igniter, shall be 1000 ohms minimum at 1.5 volts, direct current. The resistance between th
18、e bridge wire elements and the case after firing shall be 1.05 ohms minimum at 1.5 volts, direct current. 3.3.4 Auto-ignition. 3.3.4.1 Low temperature. The igniter shall be capable of with- standing a temperature of f170“ F for a period of 2 hours without self-igniting and thereafter shall meet the
19、performance requirements and product characteristics. 3.3.4.2 High temperature. The igniter shall be capable of with- standing a temperature of -250“ F for a period of 8 hours without self-igniting. The igniter is not required, thereafter, to meet the performance requirements and product characteris
20、tics. 3.3.5 Maximum no-fire current. A direct current of 0.2 amperes maximum flowing through either bridge wire for a minimum of 5 minutes, shall not cause the igniter to fire, and thereafter shall meet the per- formance requirements and product characteristics. 3.3.6 Minimum firing current. Either
21、bridge wire shall be capable of firing the igniter when a direct current of 0.9 amperes minimum is passed through it. The direct current shall be limited to an on-time of 100 milliseconds (ms). 3.3.7 Maximum firinp current. Either bridge wire shall be capable of firing the igniter when a direct curr
22、ent of 5 amperes maximum is passed through it for 20 ms. 3.3.8 Pressure output. The igniter shall develop a pressure out- put versus time characteristic when fired into a closed chamber of 0.305 cubic inches with the igniter and chamber previously conditioned to a temperature in the range of O“ F to
23、 +140“ F. within the limits illustrated in Figure 1 3.3.9 Calorimetric output. The total calculated calorimetric output shall be not less than 900 calories 3.3.10 Metallic particles. The metallic particle content shall constitute a minimum of 25 percent, by weight, of the main charge. 4 Licensed by
24、Information Handling ServicesMIL-1-82937 13 7777706 0931317 1 L MIL-1-824.37 (0s) 3.3.11 Configuration. 3.3.11.1 Dimensions. Dimensions of the igniter shall be in accordance with BuWeps Dwg. 2526678 and all documents listed thereon. 3.4 Environmental requirements. Unless otherwise specified , the ig
25、niter shall be capable of conforming to the performance requirements and product characteristics of the specification after being exposed to the environmental conditions specified in this section. of ready, operating, and non-operating see 6.3.1, 6.3.2, 6.3.3. For definitions 3.4.1 Vibration, ready
26、condition. The igniter, mounted as shown in Figure 2, shall be capable of meeting the performance requirements after being subjected, in the ready condition, to the vibrations defined in Table I. The igniter shall be vibrated for 180 minutes each in its longi- tudinal axis and in two mutually perpen
27、dicular transverse axes at any temperature within the range of -45“ F to +140“ F. in 6.3.4. Vibration is defined TABLE I VIBRATION SCHEDULE Double Amplitude Acce lera t ion Frequency (in. f 10%) Minimum (gs f 10%) Minimum (CPS) o .2 - 5 - 22 3 .O 22 - 40 O. 036 - 40 - 74 - 10 74 - 500 - 3.4.2 Accele
28、ration, ready condition. The igniter, mounted as shown in Figure 2, shall be capable of meeting the performance requirements after being subjected, in the ready condition, to the accelerations defined in Table II for a duration of 1 minute for each magnitude. Acceleration is defined in 6.3.5. 5 -_-.
29、 .-. - - ._- _- _ -._.-_- - -_. . _- . _._ _ ,. _ - - _- - _ - Licensed by Information Handling ServicesMIL-1-82.4.37 (OS) r- Acceleration Direction Mapnitude (as with an accuracy to f 5“ F b. Relative humidity: 95 percent minimum at -i-llo F; with an accuracy to f 5“ F - c. Interior size: 2 inches
30、x 2 inches x 4 inches minimum This equipment may be used for both non-operating and readyloperating temperature (and humidity) tests. 4.4.3.5 Power supply, The power supply, in addition to meeting the requirements of 4.5.5 a., shall be capable of supplying a 100 k 1 ms pulse. 4.4.4 Test procedures.
31、4.4.4.1 Inspection. The igniter shall be subjected to the tests, prior to firing , detailed in 4.5.6.1, and post-firing, detailed in 4_.5.6.3, 4.4.4.2 Vibration, ready condition. The igniter, in the ready condition, shall be mounted in a manner eauivalent to that shown in Figure 2. The - resonant mo
32、des in each of the 3 axes shall be determined by varying the frequency of applied vibration slowly from 5 cps to 500 cps. shall then be subjected to resonance and cycling vibration in each axis, in conformance with the times shown in Table V. If more than 4 resonances are encountered on any axis, th
33、e 4 most severe resonances shall be chosen for the test. The resonant and cycling period, for each axis, shall be divided into 3 equal parts, which are conducted at -45“ F t: 5“ F, room temperature and +140 F f 5“ F respectively. frequency sweep rate shall be used if available; otherwise, other cycl
34、ing rates of frequency change may be used. The sweep rate shall be such that 15 minutes actual vibration time is required to proceed from the lower to higher and back to the lower extremity of frequency range in accordance with the accelerations or double amplitudes defined in Table VI. The igniter
35、For cycling, a logarithmic TABLE V VIBMTION TEST SCHEDULE - -. - . -.- .- .-.* Number of B.eetiuar?ges O 1 2 3 4 Total Vibration Time Cycling Time 3 hr 2-112 hr 2 hr 1-112 hr 1 hr * 30 minutes each resonance at Re sonance* - 30 min 1 hr 1-112 hr 2 hr 12 Licensed by Information Handling ServicesNIL-I
36、-82LI37 13 W 7777706 O431327 O W Acceleration Direction . Magnitude (ES k 10%) (See Figure 2) Time TABLE .VI VIBRATION SCHEDULE Frequency (cps) 5-22 22-40 40-74 74-500 Double Amplitude Acceleration (in. f 10%) Minimum 0.2 O .O36 (gs i 10%) Minimum 3 10 4.4.4.3 Acceleration, readv condition. The igni
37、ter, in the ready condition, shall be subjected to the accelerations defined in Table VI1 after being secured to an acceleration equipment (see Figure 2). Accelera- tion shall be measured at the approximate geometric center of the igniter. TABLE VI1 ACCELERATION SCHEDULE 25 35 Longitudinal axis, Fwd
38、 1 minute Longitudinal axis , Aft 1 minute 4.4.4.4. Shock, readv condition. The igniter, in the ready condition, shall b;e attached to a shock test machine (see Figure 2). magnitudes and durations shall be measured by an accelerometer mounted on the mounting fixture. accordance with Table VISI in th
39、e sequence shown. Shock Tests on the igniter shall be performed in 13 Licensed by Information Handling ServicesMIL-1-82437 13 777770b 0433328 2 = MIL-1-82437 (OS) TABLE VI11 SHOCK TEST SCHEDULE Peak Direction of Number Test Magnitude Duration Impact Deceleration Of Sequence (as * 10%) (ms) Axis Forc
40、e Impacts 1 300 2 85 3 85 4 45 5 60 6 60 7 60 8 60 0.5 to 1.5 0.5 to 1.5 0.5 to 1.5 18.0 to 20.0 8.0 to 10.0 8.0 to 10.0 8.0 to 10.0 8.0 to 10.0 Longi tudina 1 Transverse A Transverse B Long i tud ina 1 Longitudinal Eongitudina 1 Transverse A Transverse B Aft 3 Optional 3 Op tiona 1 3 Fwd 3 Aft 3 Fw
41、d 3 Optional 3 Opt ional 3 4.4.4.5 Temperature and humiditv, non-operating condition. Eight preproduction igniters shall be subjected, in the non-operating condi- tion, to temperature and humidity cycling in the following manner: The specimen shall be placed in a temperature chamber which has been s
42、tabilized at an environmental temperature of -45“ F +O“ -5“ F. The specimen shall remain in the environment for 6 hours. (Ac an alternative procedure, the specimen may be placed in the chamber, with the chamber at room ambient temperature. -45“ F +Oo -5“ F within 2 hours maximum. remain in the chamb
43、er for 4 OUFS). The specimen shall then be subjected to an environmental temperatur .)f +140“ F +5“ -0“ F. Maximum transition time from the low temperature ta the high temperature shall be 2 hours. The specimen shall remain in the high temperature environment for 4 hours. This cycle shall be perform
44、ed 3 times; maximum transition time shall be 2 hours. The specimen shall subsequently be subjected to an environ- ment of +110“ F 4-5“ -0F at a minimum relative humidity of 95 percent for a minimum of 8 hours. in accordance with 4.4.4.6 and 4 igniters shall be operated in accord- ance with 4.4.4.7.
45、Drying by an air blast or oven is not permitted. Chamber temperature shall then be reduced- to The specimen shall thereafter Thereafter, 4 igniters shall be operated Prior to operation the igniters mky be wiped dry. #=- 4.4.4.6 Low temperature operating. Before testing, the igniter, installed in its
46、 teat chamber in the ready condition, shall be condi- tioned at ai tesipsrarjure of O“ F Alternate: QQ-S-633 Visual: Packing, preformed Chamfer (threads) Plating Shall be free from defects , Ref. BuWeps Dwg 2526718-2 Verify presence of 30“ chamfer Verify cadmium plating of case and connector pins in
47、 accordance with QQ-P-416, Type II, Class 2 19 .- Licensed by Information Handling ServicesMIL-1-82437 13 W 7777706 0431334 8 W T f i MIL-1-82437 (OS) Identification: The identification markings shall be correct, legible and in accordance with the drawing. AQL 2.5. 4.5.6.2 Firing. a. Firing current
48、- two elements. With the bridge wires - connected in parallel (pins 1 and 3 connected together) a direct current, totaling 10 4 0.5 ampers, shall be passed through the bridge wires for 20 f 1 milliseconds and shall cause th,e igniter to fire. - b. Pressure output. With the igniter and test chamber a
49、t atmospheric pressure and at a temperature within the range of So“ F f 5“ F to +140 F f 5“ F, and upon application of firingcurrent, the igniter shall develop a pressure output versus time characteristic within the limits illustrated in Figure 1 when operated into a closed chamber of 0.305 cubic inches. 4.5.6.3 Post firing. - a. Static pressure test. A hydraulic pressure shall be applied to the end of the case at a pressure of 10,000 k 100 psig for a minimum of 10 seconds. There shall be no detectable fluid leakage from either the case or the bond
