1、1-P-70533 (b) 9999906 2083752 04T I INCH- POUND I MIL-P-70533 (AR) AMENDMENT 6 18 December 1998 SUPERSEDING AMENDMENT 5 O9 April 1993 MILITARY SPECIFICATION PROJECTILE, 105MM, HE, RA, XM913/XM927 ROCKET PROPELLANT FOR MIL-P-60533 was inactivated after 21 August 1998 for new design. I I This amendmen
2、t forms a part of Military Specification MIL-P-70533 (AR), dated 29 October 1990, and is approved for use by the U.S. Army Armaments, Research, Development and Engineering Center and is available for use by all Departments and Agencies of the Department of Defense. PAGE 1 Title: Change “PROJECTILE”
3、to CARTRIDGE”. Change “XM913” to ”M913“ (and wherever it appears). 2.11 Add to SPECIFICATIONS, MILITARY the following: ”MIL-B-117 - Bags, Sleeves and Tubing” Delete: “MIL-C-70532 - Cartridge Packing”. AMSC NIA 1 of 5 FSC 1315 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unl
4、imited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-70533 (AR) AMENDMENT 6 PAGE 2 2.1.1 Add to STANDARDS, MILITARY the following: “MIL-STD-129 - Marking for Shipment and Storage“ PAGE 3 Inhibitor peel strength: Delete first sentence and rep
5、lace With new requirement: “The average peel strength of the inhibitor/propellant bond at 70 5 F shall be 20 pounds per linear inch (pli) minimum. No individual sample tested shall exhibit a peel strength less than 14 pli during acceptance testing.“ * Table I, Delete in its entirety and replace with
6、 new Table I: “Temperature Pressure Burning Rate (degrees F) (PSI) (inches/second) 70 70 145 -50 1000 2000 2000 1000 0.36 + 0.06 0.47 + 0.08 0.52 + 0.08 0.31 + 0.06“ PAGE 5 Table II, Delete in its entirety and replace with new Table II: “Table II. Mechanical Properties of Propellant Temp. Characteri
7、stic Avg of Single 5 readings Sample reading (minimum) (minimum) -50 Ultimate Strain 16.5% 14.5% “ Modulus of Elasticity 11,000 PSI 10,000 PSI “ Ultimate Stress 455 PSI 440 PSI 72 Ultimate Strain 21% 17% “ Modulus of Elasticity 2,000 PSI 1,800 PSI “ Ultimate Stress 180 Psi 170 Psi “ Strain at Max. S
8、tress 20% 16% 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-70533 (AR) AMENDMENT 6 145 Ultimate Strain 14.4% 13% Modulus of Elasticity 1,600 PSI 1,450 PSI Ultimate Stress 139 PSI 135 PSI“ 3.9.1 Delete in its entirety 3.10 Add: (First Articl
9、e only)“ after title. PAGE 8 Propellant after mixing and curing. Change the conformance Criteria for heat of reaction from 5 each“ to 2 each“. Complete Rocket Grain. Delete “4.5.5./4.4.2.4“ in 2 places And substitute 4.5.6/4.4 -2.3“. PAGE 13 4.4.23 Change the inspection method reference of special 1
10、 From 4.5.5. I to 4.5.6“. Change the conformance criteria Of major 106 from 3.13“ to Level III“. Add the following: 109 Weight of grain .- (3 segments) 100% 3.2 Scale Minor 202 Inhibitor flash ( excess ive ) Level. V 3.7.3.1 Visual“ PAGE 14 4.5.1 Strand burning characteristics of propellant. Change
11、the last sentence of the paragraph to read as followss: “Three strands will be tested at each of the temperature, pressure conditions in Table I of paragraph 3.6, and the average of the three values shall be used for compliance with the requirements. 3 Provided by IHSNot for ResaleNo reproduction or
12、 networking permitted without license from IHS-,-,- - MIL-P-70533 (b) m 9999906 2083754 659 m MIL-P-70533 (AR) AMENDMENT 6 PAGE 15 4.5.2 Mechanical properties of propellant. Delete the last Sentence and replace with the following new sentence: “If either an individual sample or five-sample average f
13、ails to meet the requirement, the batch of propellant the samples represent shall be rejected.” 4.5.2 Mechanical properties of propellant. Add the following new subparagraph: “4.5.2.1 Retest. If the specimens taken from the bulk sample fail to meet the requirement, the contractor may retest for all
14、mechanical properties using randomly selected grains, or segments, as applicable, representative of the failed bulk sample batch. The specimen shall be the largest attainable to yield a tensile coupon which conforms to the requirements of 4.5.2, with the exception of the tab end length.” 4.5.3 Delet
15、e in its entirety and substitute the following new paragraph: “4.5.4 Inhibitor peel strength. Each batch of inhibitor will be tested with each batch of propellant that it is utilized with. A representative sample of each-batch of inhibitor material or part thereof shall be bonded to a representative
16、 sample from the propellant batch to which it is bonded in a finished grain. This sample shall be cured in the same curing chamber under the same conditions for the same length of time and be tested in accordance with section 4.7.5.4 of CPIA Pub. 21. Two test specimens shall be tested for each batch
17、 of propellant. If any specimen fails to meet the specified requirements the individual propellant/ inhibitor combination material batch represented shall be rej ected . I 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-t MIL-P-70533 (AR) AMENDMENT
18、 6 4.5.5 Tool control dimensions. Delete in its entirety. PAGE 16 4.5.7 Change “XM229 series propelling charge“ to “PXR 2000 propelling charge“ in the first sentence of the second paragraph. PAGE 17 5.1 Add the following after last sentence: “Appropriate cushioning and partitions shall be provided t
19、o protect the items from physical damage. Sufficient fillers must be used to insure a tight pack. In addition, adequate protection to damage from moisture must be provided. (Enclosing a number of items in a sealed barrier bag, meeting the requirements of Type I or II, Class E, Spec MIL-B-117 would s
20、atisfy this requirement.)“ 5.2 Add the following: “5.2 Marking. The items, packaged as in 5.1 shall be marked in accordance with MIL-STD-129 and Code of Federal Regulations (CFR), Title 49, Parts 100-199.“ The margins of this amendment are marked with an asterisk or vertical line to indicate where c
21、hanges (additions, modifications, corrections, deletions) from the previous amendment were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous amendment. Custodian: Army-AR Preparing activity: Art-ty-AR (Project 1315-0207) 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
