1、MIL-C-14747 (AR) AMENDMENT 5 1 September 1983 SUPERSEDING Amendment 4 17 November 1980 MILITARY SPECIFICATION CARTRIDGE, 105MM APERS-T, M494 FOR 105MM GUN M68 LOADING, -ASSEMBLING AND PACKING This amenthent forms a part of Military Specification MIL-C-14747 (PA:) dated 11 July 1968, and is approved
2、for- use by the U.S. Army Armament, Munitions and Chemical Ccmmand and is available for use by all Departments andAgencies of the Department of Defense. PAGE 1 Title, paragraph 1.1 and paragraph 2.1, drawings, Army: Delete the ncanenclatore “XM494E3“ and “XM603E1“ wherever it appears and substitute
3、“M494“ and “M603“, respectively, PAGE 2 Add to the list of Drawings the following: “9278696 - Inspection of M86 Detonators for presence of pettman cement when installed in M494 fuze adaptor.“ Paragraph 3.4.1: Delete the paragraph in its entirety and substitute the following new paragraph: “3.4.1 Fun
4、ctioning. The cartridges shall functicn satisfactorily- as evidenced by first and second projectile function. occur prior to 50 feet frm the muzzle when the fuze is set MA and no earlier than 230 meters or later than 380 meters when the fuze is-set at the 400 meter marking.“ The first projectile fun
5、ction shall FSC: 1315 I 1 of 7 - - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-14747 (AR) AMENDMENT 5 PAGE 3 Paragraph 3*4.2, line 2: Delete the words “at ambient temperature“ an6 substitute “at 70 degrees Fahrenheit“. . Paragraph 3.5.4: De
6、lete in its entirety and substitute the f oll owing : “3.5.4 Adhesive on threads. Threads shall be clean and free of ccntaminants prior to the application of the specified quantity cf adhesive, (see-4.3.4).“ PAGE 6 Paragraph 4.2.2.3; Major Defect 102: Delete in its entirety and-substitute the follow
7、ing: -. “Pettman cement on any end of detonators. . .Gage 03002“ Majcr Defect303: Delete in its entirety. PAGE 7 Paragraph 4.2.2.5, add Major Defect 103, 100 percent inspection: “103. Distance from surface “X“ and bay assembly, bay 5, miFimumGage 05004“ PA= 8 Paragraph 4.2.2.7, Major Defect 101: Del
8、ete in its entirety and substitute the following: 3.5,4 l shall again apply. When three successive lots have again successfully passed all of the requirements specified therein, the provisions of 4.2.3.7.2.2 shall be reinstated.“ In the.event that three successive lots fail -4.2.3.7-3.1 PAGE 13 Para
9、graphs 4.2.3.7.3, 4.2.3.7.4, 4.2.3.7.5 and 4.2.3.7.6: Delete these paragraphs in their entirety and substitute the following: tested for 400 meter function shall be measured for muzzle velocity. 4.2.3.7.3 Muzzle Velocity - Major Defect. All rounds - - - Table B-3, Code Letter I and an I-,- addition,
10、 if the standard deviati- - cartridge muzzle velocities miil f, Those.sample cartridges fired in accordance with the increased sample size of 4.2.3.7.2.1 shall be subjected tc the sampling plan and procedure specified in Standard MIL-STn-bl4, Section B, Part II, BOTn nf 1.5 percent. In df he sample
11、_ - -iplied by the factor 0.75 exceeds the applicable requirement, the lot shall De rejected . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- VIL-C-IJ (5) 13 9999906 0296521 T I MIL-C-14747 (AR) AMENDMENT 5 4.2.3.7.32 Those sample cartridges fired
12、in accordance with the reduced sample size of 4.2.3.7.2.2 shall be subjected to the sampling plan and procedure specifies in Standard MIL-STD-414, Section B, Part II, Table B-4, Code Letter I and-an AQL of 1.5 percent. addition, if the standard deviation of the sample cartridge muzzle velocities mul
13、tiplied by the factor 0.65 exceeds the applicable requirement, the lot shall be rejected . Effectiveness- Major Defect. All rounds fired shall be observed for tracer function 2nd eye marker effect. If three or more of,.the sample cartridges tested in accordance with t,he increased sample size of 35
14、fail to canply with either the tracer requirement of 3.4.3 or the dye marker requirement of 3.4.4, the lot shall be rejected. If two or more of the sample cartridges tested in accordance with the reduced sample size of 20 fail to comply with either the tracer requirement of 3.4;3 or the dye marker r
15、equirement of 3.4.4, the lot shall be rejected. 4.2,3.7.5 Security - Critical Defect. If any cartridge fails to ccanply with the requirement of 3.4.5, the lot shall be rejected.“ In 4.2.3.7.4 Tracer Function and Dye Marker PAGE 14 Paragraph 4.3.4: Delete in its entirety and substitute the following:
16、 “4.3.4 Adhesive on Threads (see dwg. 9229964). The adequacy of the manufacturing application method shall be quantitatively assessed on one sample at the start of each production shift, as well as each time there is a change in the method or process that is likely to affect uniformity of performanc
17、e as determined by the Government. If the sample fails to meet the drawing reouirement, production shall be stopped and the epplication method corrected. When it has been determined that the quantity applied by the application method in use meets the drawing requirement, visual observation shall be
18、used to assure that this amount is applies to each of the threaded jcints, (see 4.2.2.7, Major Defect 101), (See also 6.3).“ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-h. - -_ II-_- -_ ! MIL-C-Lq747 (5) 13 9993906 0296522 1 - . MIL-C-14747 (AR)
19、AMENDMENT 5. Paragraph 4.3.5.1: Delete in its entirety and substitute the following new paragraphs: i “4.3.5.1 MA Function The sample cartridges fire6 in this phase shall be verified for proper MA fuze setting. Aireauate photographic coverage shall be provided to determine compliance with the applic
20、able requirements. The distance frm the muzzle to the point of seccnd function shall be recorded for information. temperatures of the sample cartridges at the time of firing shall be recorded for information. The 4.3.5,2 400 Meter Function. The sample cartridges fired in this phase shall be conditio
21、ned to 70 plus or mims 2-1/2 degrees Fahrenheit for a minimum of 24 hours prior to testing and fired with the fuze set for 400 meters. be provided to determine cmpliance with the applicable requirements. recorded for information. Radar -or other appropriate instrumentation shall .Distance to second
22、function shall.be 4.3.5.3 Tracer Function and Dye Marker Effect. The tracer and dye marker shall be readily observable without use of instruments.“ the After PAGE i7 paragraph 6.5, add the following new paragraphs: “6.6 Outlier Criteria. An outlier test shall be conducted to determine if any of the
23、first functioning distances are outliers. Any value determined to be an outlier shall be excluded frm MIL-STD-414 calculations for lot acceptability. The Dixon Criteria and Procedure for the treatment of outliers as specified in AMCPM 706-11 3 (Experimental Statistics) , paragraph 17-3.2.1, with an
24、upper percentiIe of -95, shall be u til i zed. I 6 I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. - - ?- - . . MIL-C-Lq7q7 (5) 13 I 7779706 0276523 3 I I. MIL-C-I 4747 (AR) AMENDMENT 5 6.7 Proving Ground Test Summary TEST - SAMPLES MA Function *
25、 10 SIZE - REQUIREMENTS a. First Function (3.4.1) b. Tracer Function (3.4.3) c. Dye Marker Effect (3.4.4). d. Security (3.4.5) e. Second Function Distance for Information (4.3.5.1) f. Temperature for Informa- tion (4.3.5.1) 10 % * 2:s 10 a. First Function (3.4.1) b. Muzzle Velocity (3.4.2) C. Tracer
26、 Function (3.4.3) d. Dye Marker Effect (3.4.4) e. Security (3.4.5) f. Second Function Distance for Information (4.3.5.2) 400 Meter - - * 35 20 . * Applicable for first three lots or tightened inspection.” NOTE: to indicate where changes (additions, modifications, corrections, deletions) fran previou
27、s issue were made. done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are GaUtiOnsd to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous issue. The margins of this Amendment are marked with an asterisk This was Custodian : Amy - AR P r epa r i ng Act i v i t y : Army - AR (Project: 1315-A581) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
