1、MIL-F-63231 13 m 9979906 0345768 2 m - - -. p= Benef i cia1 coments (recommendations , addi tions, del etions ) and any peninen t data which may be of use in improving this document should be addressed to: Comanoor, US Army Armament Reseorch and De elopment Comand, Attn: Improvenent Prcposal (!?D Fo
2、rm 1426) appearing at the end of this document or by letter. DRDAR-QA, Dover, New Jersey 0760i by us i ng the sel f-a i drssed Stance rd i zation Dccunen t MIL-F-63231 !AR) . -17 AUGUST 1979 i KILIVRY SPECIFIC XM74C-, SECOND EMVIRONMEiT SENSOR ELECTRONIC: MODULE FOR * his specffication is approved f
3、or se by the US Army Armment Research and Development Command and is available for use by all Departments and Agencies of the Department of Defense. 1.0 SCOPE 1.1 This specification establishes the requirements for the m nufacture acceptance of the Second Environment Sensor Electronics Assembly (SES
4、E) crit i tem. 2.0 . APPLICABLE DOCUMENTS and cal 2.1 Government documents - Except as noted, 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 IF I CATIONS Federal PPP-T-97 Mi
5、 1 i tary MIL-B-81705 STANDARDS Mi 1 i tary MI L-STD- 105 Tape, Pressure Sensitive, Adhesive, Filament Reinforced - Barr i er Mater i al s, Flexible, Electrostatic- Free, Heat Seal able. Sampling Procedures and Tables for Inspection by Attributes 3 Provided by IHSNot for ResaleNo reproduction or net
6、working permitted without license from IHS-,-,-MIL-F-63231 13 a 9799906 03457b7 4 a -. FIL-STD-IC!: Quality Assurance Terms -and Definitions , MIL- SiD- 120 Narking for Shipment and Storage MI i - STD- 331 Fuze and Fuze Components, Environmental and MIL-STD-810 Environmental Test Methods Performance
7、 Tests For t DRANI NGS Amy 9307285 Printed Wiring Board Assembly, Second Environ- ment Sensor- 9307286 Sensor Electronics Assembly, Second Environ- ment 9303583 St andof f Other Pub1 ications -._ AR700-15 . , Packaging of MaterSal (Copies of specifications, standards, drawings and publications requi
8、red by contractors in connection with specific procurement functions should b obtained from the procuring activity or as directed by the contracting officer.) 3. O REQUIREMENTS 3.1 Item definition - The second environment sensor electronics assembly (SESE) is mounted within a projectile and is usedj
9、n combination with two second environment sensors. The sensors are physically spaced a known distance apart, one aft of the other. The SESE, using the input from the two sensors, provides an electrical signal output. The signal is the second environment utilized in the arming sequence of the fuze sy
10、stem to assure the projectile has been safely launched. The forward sensor provides both start signal and power for the SESE. The aft sensor provides a second signal to the SESE as it exits from the gun tube. The time between the two sensor signals is used to detect projectile velocity and determine
11、 if the velocity ensures that a minimum arming distance will be achieved. 3.2 Character i st i cs 3.2.1 Performance .I . 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-63231 13 H 9979706 0345770 O H . . MIL-F-63231(AR) 5.2.l.1 Outwt siatials
12、 - Tne SESE shall provide either a “go“ (arm) signal or. - t “no so nor arm) signal, depencino upon the condition and timing of the input s.;sr,als. The Pl input signal will be a single pulse with a voltage rise from43 to 16 irolrs in.90 5, -0 microseconds and a decay to less than 10 volts at 100 +
13、10 nfcroseronas and will Se applied to terminals 1 and 2 with terminal 1 positive and terminal 2 negative. The 12 input signal will be a single pulse with a voltage rise from O to 16 volts in 40 + 5 microseconds and will be applied to terminals 3 and 4 with terminal 3 posifive and terminal 4 negativ
14、e. The “go“ signal shall occur within 100 microseconds following the application of the #2 input signal. 3.2.1.1.1 Go output signal - A go1 signal shall be a pulse which changes from less than+O.hdc to +4.Ovdc minimum with the voltage maintained at greater than 4.0vdc for 0.7 seconds minimum. This s
15、ignal shall be measured at terminals 6 and 5 with terminal 6 positive and terminal 5 negative. The signal shall occur when input signal #1 is applied 180 microseconds or less prior to input signal t2 3.2.1.1.2 No-qo output signal - A Ino-gol signal shall be a voltage of not greater than0.2vdc. This
16、signal shall be measured at terminals 6 and 5 with terminal 6 positive and terminal 5 negative. The Ino-go“ signal shall occur when the input signal-#l is applied 270 microseconds or more prior to input signal #2: 3.2.2 Environmental .conditions - Except for temperature testing, these conditions app
17、ly with the StSt mounted in a projectile or a simulated projectile. 3.2.2.1 High temperature - The SESE shall meet the performence requirements specified in 3.2.1.1 when stabilized at temperatures up to 145 E. 3.2.2.2 Low tem erature - The SESE shall meet the performange requirements specified -in *
18、tabilized at temperatures down to -25 F. 3.2.2.3 Acceleration hiqh g - The SESE shall meet the performance require- ments specified in 3,2.1.1 foJ1owing vposure to acceleration of 9000 +1500, -300 gs at temperatures from -25 F to 145 F. The direction of acceleration is shown in Figure 1. The acceler
19、ation time curve shall have no sharp discontinuities and shall remain above 8000 GIs for at least 1.5 milliseconds. 3.2.2.4 Transportation vibration - The SESE shall meet the performance requirements. specified in 3.2.J.l following exposure to vibration levels at temperatures from -5OOF to +160 F. .
20、 Freauency (Hz) Levei + 10% - 5-11 12-37 2.5 g acceleration, peak 38-52 0.4 inch displacement, peak to peak 0.036 inch displacement, peak to peak 5.0 g acceleration, peak 53-500 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-C O c L al c c d L al
21、U al c c P c Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIl-F-b3231 13 9997Ob 0345972 4 . .MIL-F-63231 (AR) 3.2.2.5 Hun?idiry - The SESE shall meet the performante requirements specified ir; 2.2.l.l fo7iowing exposure to atmosghere wiih a relati
22、ve .humidity of 94 c + 4 - bercent over a temperature range of 68 F to 149 F. 2.3.2.6 five-foot drob - The SESE shall meet the performance -requirements specified in 3.l.l following a drop of 5 feet onto a steel plate soTidly supported by concrete. 3.2.2.7 Thermal shock - The SESE shall meet the per
23、dormance rgquirements specified in 3.2.1.1 foll.owing thermal shock between -50 F and 160 F in a one minute period. 3.2.2.8 Lateral acceleration - The SESE shall meet the performance require- ments specified in 3.2.1.1 following exposure to a shock load of 750 + 50 gs for a period of less than one m
24、illisecond along the longitudinal axis 07 the SESE. The direction of the acceleration force shall be as shown in Figure 1. 3.3 Design and construction 3.3.1 Production drawinas - The SESE shall be fabricated and assembled in accordance with the requirements specified on Drawing 9307286 and the appli
25、cable specifications referenced thereon. 3.3.2 Workmanshie - All parts shall be fabricated and finished in a thorough workmanlike manner. Except as otherwise specified, the parts shall be free of cracks, scratches, burrs, dents, gouges, surface defects or any surface discon- tinuities. The items sha
26、ll befree from dirt, chips, grease, corrosion, and other foreion material. The cleaning method.used shall not be injurious to any part nor shall the parts be contaminated by the cleaning agent. All required markings shall be neat and sharply defined. Exterior surface coatings shall be continuous. ex
27、cept for voids not exceeding 0.25 inch wide, 0.25 inch long and 0.125 inch deep which do not expose components, circuitry, printed wiring board or side of the standoff first article inspection. First article samples shall meet al1 the requirements . of this specification. Requirements for submission
28、 of the first article samples by the contractor shall be specified in the contract. 3.4 First article inspection - This specification makes provisfon for the I 4.0 OUALETY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. - Unless otherwise specified in the contract or purcnase order, the supp
29、lier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified, the supplier may utilize his own facilities or any comercial laboratory accept- able to the procuring activity. The procuring activity reserves the right to perform any of the i
30、nspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. .I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.2 ClcscfScetion of insDection - The followi
31、ng types of inspections shall bc conductec ir, tnts Stem: (a! F:rsr article inspection (4.3) (5: Quai ity conformance inspection (4.4) 4.3 First article insttection I 4.3.1 Submission - The contractor, when required by contract, shall submit a first article sample of 20 assemblies, for examination a
32、nd test by the procuring activity in accordance with Table I. The first article sample shall have been inspected in accordance with Table If. The contractor shall additionally submit 5 complete sets of parts and subassemblies as listed in “Classification of Defects and Tests,“ Table II. Environmenta
33、l tests shall be conducted in the sequence indicated. Performance of each assembly shall be as indicated in each environmental fest method. The testing shall be considered destructive and the tested assemblies shall not be returned to a lot for delivery. All assemblies and components shall have been
34、 produced by the contractor or furnished by a supplier using the same production processes, procedures, and equipment which will be used in fulfilling the contract,. All parts and material shall be ootained from the same source(s) of supply as will be used in regular production. Prior to submission,
35、 the contractor shall inspect the sample to the degree necessary to ensure that it conforms to the requirements of the contract and submit a record of this inspection with the sample, including statements of findings for materials, processes, and tests. A sample containing known defects will not be
36、submitted unless specifically authorized by the procuring activity. A first article sample, or portion thereof, as directed by the procuring activity, shall also be submitted whenever there is a lapse in production for a period in excess of 90 days, or whenever a change occurs in manufacturing proce
37、ss, material used, drawing or specification, such as to sjgnificantly affect the product unif ormi ty as determined by the procuring activity. . ql 4.3.2 Inspections to be performed i First article test specimens may be subjected by the procuring activity to any or all of the examinations and tests
38、specified in this specification and to any or all requirements of the applicable drawings. 4.3.3 First article rejection - If any test specimen fails to comply with any of the applicable requirements, the first article samples shall be rejected. The procuring activity reserves the right to terminate
39、 its inspection upon failure of any test specimen in the sample to comply with any of the stated requirements. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-VIL-F-63231 13 9999706 0345774 m . _= - MIL-F-63231 (AR 1 4.L Qs.?!izy conformance fnsDec
40、tfon L.L.: insoection lot -. Unless otherwise specfied herein or by the procuring - tivity, Snspection lot size, lot formation, and presentation of lots shall be in sccordance witn the inspection and sampling procedures herein and the “submis- scr! of proauctll provisions of MIL-STD-105. Lot size sh
41、all be not greater than 1 months production. Parts and subassemblies shall each be of one dash number of tne same. drawing number. . 4.4.2 Inspections 4.4.2.1 Samplinq inspection - Each lot of assemblies shall consist of hardware which has been inspected per Table II. Unless otherwise specified, sam
42、pling shall be to level 11 of MIL-STD-105. Lots failing to meet the require- ments of Table II shall be rejected. 4.4.2.2 Lot acceptance testinq - Each lot of assemblies shall beinspected in accordance with Table III. Sampling shall be to level 5-3 of MIL-STD-105. Tests shall be conducted in the seq
43、uence shown except that the High and Low Temperature tests may be interchanged. The sample shall meet the requirements of Table III for acceptance of the lot. If the sample fails to meet these requirements the lot shall be rejected. 4.5 Test methods 4.5.1 Test conditions- 4.5.1.1 Environmental condi
44、tions - Unless otherwlse specified for the purpose of test, testing shall be conducted at the following conditions: (a) Temperature 72 - + 18F (22.2 2 IOOC) (b) Relative Humidity 90 percent maximum (c) Barometric Pressure 28 to 32 inches of mercury 4.5.1.2 Test tolerances - All tolerances specified
45、herein are absolute with no allowance made for measuring equipment inaccuracy. Measurements shall ensure that the values measured are within the tolerances or limits specified. 4.5.1.3 Inspection equipment - The inspection equipments required to perform the examinations and tests prescribed herein a
46、re described in the Paragraph Reierence/Inspection Method“ column in the inspection tables included herein. The contractor shall submit for approval inspection equipment designs in accord- ance with the terms of the contract. 4.5.2 Performance - The SESE is an active electronic device and requires a
47、n outside power source. This source is the ptrlsets) from the Second Environment Sensor (SES) in application or from test equipment simulating the pulse(s) during test. The SESE shall meet the requirements of 3.2.1 when tested as follows, See Section 6.4. 7 Provided by IHSNot for ResaleNo reproducti
48、on or networking permitted without license from IHS-,-,- a sional outwt - With the #! input signal defined by 3.2j1,l iolicd tc terminals i and 2 of the SESE with terminal 1 positive and terminal 2.- nogaiive; and tne input signal t2 defined by 3.2.1.1 app:ied to terminals 3 and 4 of :he SESE with t
49、erminal 3 positive and terminal 4 negative; and with signal fnDi;t i2 deleyed 180 microseconds or less after signo1 input Pl; the output measrired at terminals 5 and 6 with an instrument of 10.: 8 megohm input impedance across a 1.1 2 1% megohm resistor shall be as specified in 3,2.1.1.1. No go sianal outDut - With the #1 input signal defined by 3.2.1.1 applied to terminals 1 and 2 of t
