1、5 P r M n 8 Y) d Y w z O 5 i 3 2 u 8 t rl a k a, 4J 8 a 4J a, FI 1: it Bsg - MIL-F-48373A 13 W 7777906 0427346 b = Fi 8- 8 z E a rl Id 5 rn .I4 3 1 W aJ v) aJ U 4 I- m n - a, L r) cn 3 X + n 3 9 -4 n c 8 Licensed by Information Handling Servicesc E Y 2 a a id 2 c U . -rl I* :ti o CJ m * . rl drl o m
2、m m .I * (u E: O 4 a. 8 8 9 9 Licensed by Information Handling ServicesQ) O m 4 pi $ 8 .rl rl a x w a id s I- cv m . * I - MXL-F-LIB373A 13 W 777770b 0427353 T W cv cv cv Cu cvcv W m m m m mm m * * . 9. * O . . 0. * ?I o o o O0 O b a QI o c 9 n 3 D -i - I E n a Ii Licensed by Information Handling Se
3、rvices1. C P O 2 8 U a .rl CI O 4J 8 4 k Pi Co O In Y 2 8 al 3 .rl I MIL-F-48373A 13 = 7779706 0427352 L W C In -i ni m * I In 11 Licensed by Information Handling Servicesri B t ri ff u O I4 8 .rl ci U 7 k u rnld du a aaJ ldu 32 QI (v m cr e . MIL-F-48373A 13 7779906 0927353 3 u) m 0 O In P i 3 0 C
4、x . . 12 Licensed by Information Handling Servicesz O H w U O ii irc z O u 3i I3 H c 6 6 e e a c: I Ei I c: . r ii r )I d If w n 8 Y Y Z O F 2 f O rl 8 ti rl a rlrl mm 00 u) U 13 Licensed by Information Handling Servicesw li O Li 2 u & al U 1 O c O .rl U .I4 C b 1 4 b cn c .rl Y u ia pi b E? I U al
5、v) b al d d cv M w 0 . b - MIL-F-48373A 13 797770b 0427355 7 W t drl mm * HdP O0 ve O0 *. L) Li o Q1.5 u 07 iaLI EO UiE al 31 CI“ r n 2 O I E L O L Y 3 14 Licensed by Information Handling Servicesrl b t rl ir MIL-F-q373A 13 9999906 0427356 rlrlrl rl mmm m e , dpdpa, dp O00 o *did di O00 o a e 8 0 c
6、& 15 Licensed by Information Handling ServicesMIL-F-4B373A 13 777790b 0427357 O W 4.3.3 MIL-F-48373A (AR) Testing. 4.3.3.1 Transportation Vibration. 4.3.3.1.1 Beginning with the first lot produced and continuing until three (3) consecutive lots have been found. acceptable a sample of fifteen (15) lo
7、aded fuzes shall be randomly selected from each lot for the test. If any assembly fails to comply with the requirements of the test, the lot shall be rejected. 4.3.3.1.2 After three (3) consecutive lots have complied with the criteria of 4.3.3.1.1 the sample size shall be as specified in 4.3.2.3. If
8、 any assembly fails to comply with the requirements of the test, the lot shall be rejected and testing shall revert to 4.3.3.1.1. 4.3.3.2 Proving Ground Tests. 4.3.3.2.1 Beginning with the .rirst lot produced and continuing until three (3) consecutive lots have been found acceptable a sample size of
9、 seventy (70) shall be randomly selected from each lot for the test. The lot shall be rejected if the requirements of 4.4.2.1 are not met. 4.3.3.2.2 After three (3) consecutive lots have complied with the criteria specified in 4.3.3.2.1, the sample size shall be as specified in 4.3.2.3. The lot shal
10、l be rejected if the requirements of 4.4.2.2 are not met and testing shall revert to 4.3.3.2.1. 4.3.3 Inspection Equipment. The inspection equipment re- quired to perform the examinations and tests prescribed herein is described in the “Paragraph Reference/Investigation Method“ column in the tables
11、starting with paragraph 4.3.2.1. The contractor shall submit for approval inspection equipment designs in accord- ance with the terms of the contract. See Section 6 of MIL-A-48078 and 6.3 herein. 4.4 Methods of Inspection. 4.4.1 Transportation Vibration Test. The loaded fuze assem- blies shall be su
12、bjected to the transportation vibration test in accordance with MIL-STD-331, Test 104, Procedure II. The sample shall then be radiographically inspected in two planes as follows to determine compliance with the safety aspects of the test: 16 Licensed by Information Handling Servicesu. MIL-F-48373A 1
13、3 W 739970b 0427358 2 W 0 MIL-F-48373A (AR) a. Horizontal Plane - Screwdriver slot facing viewer. b. Horizontal Plane - Screwdriver slot at left. As a minimum inspection requiremegt IorCritical Defects, no S&A shall be in an armed or partially armed condition. As a minimum inspection requirement for
14、 Major Defects, the x-ray shall indicate that no metal parts components are broken. Fuzes subject to this test shall be forwarded to the Proving Ground for testing as specified in 4.4.2. 4.4.2 Proving Ground Tests. 4.4.2.1 The fuzes shall be assembled to the appropriate HE loaded projectiles, except
15、 for the non-functioning test where inert loaded projectiles with T2 supplementary charges shall be usedl and fired from the weapons specified below. Target distances for all phases except the one (1) inch plywood screen shall be any convenient distance. l%e quadrant elevations shall be as specified
16、 below. DEFECT ACCEPT REJECT Premature Burst Non Functioning Duds Reverse Functioning O O 1 1 WEAPON ZONE QUADRANT ELEVATION Non Functioning 105MM M102 7 1 1 2 2 SAMPLE SETTING SIZE TARGET FUZE 1“ Plywood SQ 10 115 Feet Functioning 105MM M102 7 Low Ground SQ 20“ 105MM M102 7 1“ Plywood SQ 10 155MM M
17、109A1 2 Low Ground SQ 20“ e500 Feet * 10 Transportation Vibration Condition Fuzes * 5 Transportation Vibration Condition Fuzes 17 Licensed by Information Handling ServicesMIL-F-q373A 13 7779706 0427357 m I. MIL-F-48373A (AR) 4.4.2.2 The testing shall be conducted as specified in 4.4.2.1 s except tha
18、t the acceptance criteria and weapon firings shall be as specified below. DEFECT Premature Burst Non Functioning Duds Rever se Functioning WEAPON ZONE Non Functioning 105MM M102 7 Functioning 105MM M102 7 105MM M102 7 155MM M109A1 2 ACCEPT O O O 1 QUADRANT ELEVATION Low Low REJECT e 1 1 2* 2 TARGET
19、FUZE SETTING 1 Plywood SQ 115 Feet Ground SQ 1“ Plywood SQ SOO Feet Ground SQ SAMPLE SIZE 7 10* 5 10 * 10 Transportation Vibration Condition Fuzes * If only one dud occurs during the Functioning tests, repeat the Functioning tests with a second sample df 25 fuzes. If no additional duds occur, accept
20、 the lot. If any production lot fails to meet the above criteria, testing shall revert to 4.4.2.1 until three (3) consecutive lots have been accepted. 4.4.3 Lead Assembly Output Test. The lead assembly output test shall be performed using the appropriate test equipment and a one-eighth inch thick le
21、ad disc. High order functioning shall be evidenced by a minimum .210 inch diameter hole in the lead disc. If two or more lead assemblies fail to meet the minimum diameter hole requirement, the lot shall be rejected. intended shall be classified as duds. For SQ firings into a plywood target at 500 fe
22、et, intended functioning of the fuze is on impact with the target (on the target). 4.4.5 Density of explosive in lead cup (when loaded by alternate method. A minimum of five (5) assemblies, representative of the explosive leads being processed, shall be loaded and the densities determined to qualify
23、 each press prior to its use in production. In addition, a sample of five (5) leads shall be processed during the last portion of each four (4) hours production from each press and density determined as a control of each press during production. 4.4.4 Definition of dud. Fuzes which fail to function
24、where 18 Licensed by Information Handling Servicest MIL-F-48373A 13 m 7779906 04273b0 O m MIL-F-48373A (AR) O If any defective lead is found when inspection is performed for control of a press, the press producing the defective leads shall be removed from production. Further, that portion of product
25、ion since the last control check shall be returned to the contracter for corrective action. a All presses removed from production because of some fault, may, after corrective action, be returned to production providing they pass the qualification test above. The samples shall be selected prior to as
26、sembly of lead disc and crimping and the following procedure used to determine the density of the explosive charge. 1. Measure and record height (h) from base of cup to top of . 2. explosive column to .O01 cm. Weigh and record weight of loaded cup to 0.001 gram. 3. Remove explosive from cup. 4. 5. M
27、easure inside diameter (d) of empty cup to .O01 cm. Weigh empty cup to 0.001 gram. 6. Measure end thickness of empty cup to .O01 cm. 7. Calculate weight of explosive by subtracting the value contained in (4) above from the value obtained in (2) above. 8. Calculate explosive column height by subtract
28、ing the cup thickness measured in (6) above from the total height (II) measured in (1) above. a 9. Calculate the explosive volume using the formula V =Wa r2 (h). (h is the value obtained in (8) above and r = d/2 from (5) above). 10. Calculate the density by dividing the weight obtained in (7) above
29、by the volume obtained in (9) above. If the density of any explosive lead falls outside the density limits specified on the applicable drawing, the lead shall be classed defective. The contractor may use another method of determining density provided approval of the method has been obtained from the
30、 contracting officer. 5. PACKAGING 5.1.1 Level A. The fuzes shall be preserved and packaged in accordance with the requirements and inspection procedures specified in MIL-P-60412. 19 Licensed by Information Handling Services- MIL-F-4373A 13 W 777970b 0427363 2 W 5 MIL-F-48373A (AR) 1 5.1.2 Level C.
31、The lead assemblies shall be preserved and packaged in accordance with drawings 7548103 and 7548104. 5.2 Packincr 5.2.1 Level A. The fuzes shall be packed in accordance with the requirements and inspection procedures specified in MIL-P- 60412. 5.2.2 Level C. The lead assemblies shall be packed in ac
32、cordance with drawing 7548099. 5.3 Marking. 5.3.1 Level A. The fuze packaging and packing shall be marked in accordance with the requirements and inspection procedures specified in MIL-P-60412. be marked in accordance with drawings 7548099, 7548103 and 7548104. 5.3.2 Level C. The lead assembly packa
33、ging and packing shall 6. NOTES 6.1 Intended use. The components covered by this specifica- tion are intended for use on Artillery Ammunition. 6.2 Ordering Data. See MIL-A-48078. 6.3 Submission of Designs for Approval. See MIL-A-48078 Submit equipment designs, as required, to Commander, ARDC, ATTN:
34、AMSMC-OAR-I (D), Dover, NJ 07801. 6.4 Reverse Functioning. Reverse functioning is defined as “Delay“ functioning of the fuze when set in the Superquick pos i t ion. 6.5 PROVING GROUND TEST SUMMARY QUALITY CONFORMANCE TEST FIRST 3 CONSECUTIVE ACCEPTABLE LOTS ACCEPTANCE CRITERIA DEFECT ACCEPT REJECT O
35、 O Premature Burst Non Functioning Duds 1 Reverse Functioning 1 1 1 2 2 20 Licensed by Information Handling Servicesr Y MIL-F-48373A L3 m 7777906 O427362 4 m MIL-F-48373A (AR) e TESTING WEAPON ZONE QUADRANT - TARGET . FUZE SAMPLE ELEVAT I ON SETTING SIZE Non Functioning- 105MM M102 7 Functioning 105
36、MM M102 7 105MM M102 7 155MM M109A1 2 DEFECT 1“ Plywood SQ 10 0 115 Feet Low Ground SQ 20“ Low Ground SQ 20*. 1“ Plywoo& SQ 10 e500 Feet Premature Burst Non Functioning Duds Rever se Func t i oni ng * 10 Transportation Vibration Conditioned Fuzes. 5 Transportation Vibration Conditioned Fuzes. * SUBS
37、EQUENT LOTS ACCEPTANCE CRI TE RIA - ACCEPT REJECT O O O 1 1 1 2* 2 WEAPON ZONE QUADRANT TARGET FUZE SAMPLE ELEVATION SETTING SIZE Non Functioning 105MM M102 7 1“ Plywood SQ 7 Functioning 105MM M102 7 Low Ground SQ 10“ 105MM M102 7 1“ Plywood SQ 5 155MM M109A1 2 Low Ground SQ 10 e500 Feet . * 10 Tran
38、sportation Vibration Conditioned Fuzes. * If only one dud occurs during the functioning tests, repeat the Functioning tests with a second sample of 25 fuzes. If no additional duds occur, accept the lot. 21 Licensed by Information Handling Services- MIL-F-48373A 13 = 7777906 Oq27363 b r- MIL-F-48373A
39、 CAR) x 6.6 International standardization agreements. Certain provisions (4.3.2.31 4.3.2.4, 4.4.2.2 and 6.5) of this specification are the subject of international standardization agreement (QSTAG 626). When amendment, revision, or cancellation of this specification is proposed which will affect or
40、violate the international agreement concerned, the preparing activity will take appropriate reconciliation action through international standardization channels including departmental Standardization offices if required. 6.7 Changes from previous issue. Asterisks are not used in this revision to identify changes with respect to the previous - issue due to the extensiveness-of the changes. Custodian Army -AR Preparing activity: Army - AR ( Pro j ec t 13 90-A43 5 ) *U.% QOVLRNMENT PRINTiNQ OFPICP.: 084-IOI-O31/206S 22 Licensed by Information Handling Services
