1、MIL-P-63202 (AR) AiaWDMENT 2 17 November 1987 SUPERCXDING - AMXMDMENI“ 1 23 January i985 MIL I TARY SPEk IF I CAT I ON PROJECTILE, 155MM, HE, RA, M549A1 FORWARD (M37 EXTRUDED) PROPELLANT GRAIN FOR This amendment forms a part of Military Specification MIL-P-63202, dated 13 Seztember 1983 and is appro
2、ved for use within the US Army Armament, Munitions and Chemical Command and is available for use by all Departments and Agencies oL the Department of Defense. PAGE 2 2.1.1: Change: “2.1.1 Other government . I to “2.1.2 Other government .I. PAGE 3 3.5: Add the following new sub-paragraphs: “3.5.3 Alt
3、ernate Test Method. 3.5.3.1 Plus 140F. The average of three (3) naximum cornsression reaings from each lot shall be no less than 306 pounds and the average of three (3) deformation readings shall be no less than 48 percent when tested as specified in 4.5.5.1. 3.5.3.2 Minus 4OoF. The average of three
4、 (3) maximum compression readings from each lot shall be no less than 8,427 pounds and the average of three (3) deformation readings shall be no less than 23 percent when tested as specified in 4.5.5.1. PAGE 4 3.3: Add new paragraph as follows: 3.8 Proving ground test (First Article Only). When test
5、ed in accordance with 4.5.4 all the range and safety requirements of MIL-P-50578 shall be met. AMSC N/A 1 of 5 FSC 1320 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
6、MIL-P-63202 (AR) AMENDMENT 2 PAGE 5 4.3.1.1: Delete in its entirety and substitute the following: “4.3.1.1 Process chanqes. The first article tests and inspections cited herein will qualify the particular processing procedures. subsequent to the manufacture of the first article samples must be revie
7、wed by the design agency who at their discretion may require part or all of the first article repeated.“ Any major processing change made 4.3.2-1.2: Delete “for information only“. 4.3.2.2: Delete in its entirety. PAGE 7 4.3.2: Table I, Under Ballistic test: Change “3.2“ to “3.8“. PAGE 8 4.4.1: Chang
8、e “OK more than one month scheduled production . . .I to “or more than two months scheiialed production .I. PAGE 10 4.4.2.2, Minor 201: Change “100%“ to “1.0%“. PAGE 11 4.4.2.3: Add the following Critical defect: 1 Radiographic inspection (A) 3.3.1t 4.5.1.1“. Delete: Major 103 in its entirety. Add t
9、he following: “Note A. May be done prior to spiral WL ap d114 3 iiidcii i iii ny . PAGE 13 4.4.2.5: Add the following Critical defect: “1 ExcessFve cracks, Delete: Major 101 in its entirety. foreign material, or cavitation 100% 3.3.2,- Visual“. I 2 I Provided by IHSNot for ResaleNo reproduction or n
10、etworking permitted without license from IHS-,-,-MIL-P-63202(AR) AMENDMENT 2 Major 105: Add Note “(b)“ to the paragraph reference. Add the following to the notes section: “Note b. Grain segments from the same lot may be mixed to meet weight requirements provided the minimum web requirement is met.“
11、PAGE, 16 4.4.3.2.2: Delete in its entirety and substitute the following: “4.4.3.2.2 Grain inspection - Critical Defect. One sample of a completed grain shall be selected from each sublot produced and radiographed. A sublot shall be defined as a maximum of eight unsawed billets consecutively extruded
12、 and loaded onto a single grain buggy. In the event that the sample grain fails to meet the requirements of 3.3.1, the entire sublot shall be x-rayed and any additional grains failing to meet the requirement of 3.3.1 shall be removed from the lot. This test shall be conducted in accordance with 4.5.
13、1.2.“ 4.4.3.3: Delete 4.4.3.3.1 and 4.4.3.3.2 and substitute the following: “4.4.3.3.1 Plus 140OF - Major Defect. Three (3) samples will be randomly selected from the lot. If possible, no two samples will be taken from the same billet. These samples shall be tested for maximum compression load and d
14、eformation as specified in 4.5.5 OK 4.5.5.1. The lot shall be rejected if the average of the three specimens from any billet fails to meet the requirements of 3.5.1 OK 3.5.3.1. 4.4.3.3.2 Minus 4QF - Major Defect. Three (3) samples will be randomly selected from the lot. If possible, no two samples w
15、ill be taken from the same billet. These samples shall be tested for maximum compression load and deformation as specified in 4.5.5 or 4.5.5.1. The lot shall be rejected if the average of the three specimens from any billet fails to meet the requirements of 3.5.2 or 3.5.3.2. _/ PAGE 17 4.5.1.1: Firs
16、t sentence: Change “parallel to“ to “perpendicular to“. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-63202 (AR) AMENDMENT 2 4.5.1.1.1: Second sentence: Delete “photograph selected defects“. Add the following at the end of the paragraph: “I
17、f the image quality indicator can not be in the field of view at all times then it shall be used at the beginning and end of each shift as well as at a rate of once every eight billets. Should any of the simulated defects not be apparent 5uring any of the verification checks, all the billets since t
18、he last acceptable test shall be rejected.“ PAGE 18 4.5.4: Delete in its entirety and substitute the following: “4.5.4 Provinq qround tests. The 50 grain assemblies manufactured during first article shall be inspected per Table 1 and then shipped to a specified government loading facility. The grain
19、s shall be loaded into M549 projectiles (inert warhead/Live motor body) and tested at a government test facility in accordance with 4.5.4.1. Aft grains to be loaded with the test samples must be in accordance with MIL-P-63203 and may themselves be first article sam2les. 4.5.4.1 Ballistic tests_. The
20、 50 projectiles from 4.5.4 shall be tested in accordance with the M549 Projectile Loading, Assembling and Packing specification (MIL-P-50578). 10 rounds shall be fired at -65OF, 10 rounds at +14SoF (M203 charge only) 30 rounds at +70F. Failure of the propelling grains to perform according to the cri
21、teria of MIL-P-50578 shall be cause for rejection of the first article sample. ,411 test data and raw magnetic radar tapes shall be sent to Commander, US Army Armament, Munitions and Chemical Command, ATTN: AMSMC-QAR-Q (D) , Picatinny Arsenal, NJ 07806-5000.11 i 4 Provided by IHSNot for ResaleNo rep
22、roduction or networking permitted without license from IHS-,-,-MIL-P-63202(AR) AMENDMENT 2 4.5.5: Add the following: “4.5.5.1 Physical properties - alternate test method. Each - specimen and specimen support shall conform to the requirements of Figure 1. The spcimen shall be conditioned at the requi
23、red temperature plus or minus 5OF for three hours, minimum. The specimen shall be removed from the conditioning box and inserted between the fixture posts with steel cylinders the same diameter as the specimen placed above and below the specimen forming one continuous concentric cylinder. The specim
24、en shall be tested using a cross head speed of 2 inches per minute. The total time elapsed from removing the specimen from the conditioning box to the completion of each test shall be 1 + 1/2 minute. All compression tests shall be conducted in a room that is maintained at 75OF - + 50F.“ PAGE 20 * 5.
25、3 Delete “Class B“ wherever it appears aiid substitiltS “Class A“. The margins of this amendment are marked with an asterisk ar vertical line to indicate where changes (additions, modifications, corrections, deletions) from the previous amendment were made. This was done as a conveaience 3312 aid th
26、e Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and conkractors are cautioned to evaluate the requirements of this ciocurnent based on the entire content irrespective of the marginal notations and relationshis to the last previous amenment. Cus toi an: Army-AR Preparing activity: Army-AR (Project 1320 -A9 9 6) 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
