1、. MIL-P-50202A 13 7777706 0325505 5 MIL-P-50202A (AR) 11 April i977 SUPERSEDING MIL-P-50202 (PA) 23 September 1974 . .MILITARY SPECIFICATION-.? .-: - - PROPELLANT CHARGE, ROCKET, FOR DEMOLITION KIT, CRATERING, M180 This specification is approved for use by the U.S. Army Armament Research and Develop
2、ment Command, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 This specification contains requisements not normally covered by the drawings and provides quality assurance provisions for the fabrication of parts, the manufacture of the propellant an
3、d the assembly of one type of propellant charge for the Rocket Motor for Demolition Kit Cratering, M180. 2. APPLICABLE DOCUMENTS 2.1 issue in effect on date of invitation for bids, or request for proposals, form a part of this specification to the extent speci- f ied herein. Issues of documents.-The
4、 following documents of the SPECIFICATIONS MILITARY MIL-P-14 737 - MIL-A-48078 - STANDARDS MILITARY MIL-STD-129 - MIL-STD-4 53 - Propellant M-7 Ammunition, Standard Quality Assurance Provisions, General Specification For Marking for Shipment and Storage Radiographic Inspection FSC: i340 1 i Benefici
5、al comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, US Amy Armament Research and Development Command, Attn. DRDAR-QA, Dover, New Jersey 07801 by using the self-addreseed Standardization Document
6、Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. THIS DOCUMENT CONTAINS .UPAGES; Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-50202A 13 H 7777706 0325506 7 W MIL-P-5 02 02A (AR) DRAWINGS (see 6.5) US AR
7、MY ARMAMENT RESEARCH AND DEVELOPMENT COMMAND 9244409 - Propellant, Charge, Rocket 2.2 Other publications.-The following documents form a part of this specification to the extent specified herein, Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposals
8、shall apply. CODE OF FEDERAL REGULATIONS Title 49 - Transporation, parts 100-199. (The Code of Federal Regulations is available from the Superinten- dent of Documents, U,S, Government Printing Office, Washington, D.C. 20402. Orders shall specify 49 CFR 100-199, 3. REQUIRFJVIENTS 3.1 Materials.-Mater
9、ials shall be in accordance with the applicable drawings and specifications. 3.1.1 Pro ellant.-The propellant shall comply with specifi- cation MIL-P-1 -riE- 737, Type II. 3.2 Components and assemblies.-The components and assemblies shall comply with all requirements specified on drawing 9244409 and
10、 associated drawings and with all requirements specified in applicable specifications and standards. evaluation shall be taken in accordance with MIL-STD-453 and shall be of a quality which will permit proper evaluation of the sealing quality as determined by the responsible technical agency of the
11、Government. area being inspected shall not be less than 1.25 and shall be within a density range that will permit proper identification of gap or separation defects. grain shall not separate from the Molded Stud Assembly when sub- 3.3 Radiographic quality,-X-rays for gap or separation Minimum optica
12、l density of each radiograph in the 3.4 Strength of propellant charge, rocket.-The Propellant jected to a minimum axial force of i50 lbs. 3.5 Static functioning test 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. _. _- ._ MIL-P-50202A 13 7777706
13、 0325507 7 M MIL-P-50202A (AR) 3.5.1 Maximum pressure at 130F.-The maximum,pressure developed by the Propellant Charge Assembly at 130F shall not exceed 12,000 pounds per square inch (p.s.i.) when fired in the applicable test equipment. 3.5.2 Action time at minus 40F.-The action time developed by th
14、e Propellant Charge Assembly at minus 40F shall not exceed - O. 052 second. 3.5.3 Total impulse at minus 40F.-The total impulse devel- oped by the Propellant Charge Assembly at minus 40F shall not be less than 900 pound seconds. 3.5.4 Ignition delay time at minus 40F.-The ignition delay time at minu
15、s 40F shall not exceed 0.025 second. 3.6 Propellant cha,rge, rocket.-Any gap or separation at the Molded Stud Assembly and Grain Propellant, Machined interface shall be completely sealed with specific inhibitor so as to pre- vent burning of the stick at this interface. technical provisions for first
16、 article inspection. Requirements for the submission of first article samples by the contractor shall be as specified in the contract. 3.7 First article inspection.-This specification contains 3.8 Workmanship 3.8.1 Workmanship-Propellant grain.-The propellant grain shall be free of dirt, grease, chi
17、ps, gouges, inhibitor solvent drippings, cracks, fissures, porous material and other defects which would make the item unsuitable for the intended use. 3.8.2 Workmanship-Parts and assemblies.-The parts and assem- blies shall be free from chips, dirt, grease and other foreign matter that may impair p
18、roper functioning. The cleaning method used shall not be injurious to any of the parts, nor shall the parts be contaminated. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection and standard quality assurance provisions.-Unless otherwise specified herein or in the contract, the provisio
19、ns of MIL-A-48078 shall apply and are here- by made a part of this detail specification. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-50202A 13 9979906 0325508 O MIL-P-50202A (AR) 4.2 Classification of inspections.-The following types of i
20、nspection shall be conducted on this item: a. First article inspection b. Quality conformance inspection 4.3 First article inspection 4.3.1 ,Submission.-The contractor shall submit a first article sample as designated by the Contracting Officer fcr eval- uation in accordance with provisions of 4.3.2
21、. The first article sample shall consist of the following items in sample quantities as indicated, Part description Drawings Quantity Propellant Charge, Rocket 924 44 09 15 Stud, Propellant, Rocket 9244420 10 Molded Stud Assembly 9244421 5 Consecutive:. jr produced frcn! E:;: cavity of eEch ?,ld Gra
22、in, Propellant, Machined 9270900 10 1 Propellant Charge Assembly 9244401 (Ref.) *10 are *Note: (See Dwg. 9244401)72 Propellant charges., Dwg. 9244409 required for one (1) Propellant Charge Assembly. 4.3.2 I specified Inspections to be performed.-See MIL-A-48078 anci Table herein. 4.3.3 Rejection,-Se
23、e MIL-A-48078. 4 I i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-w GI u H e p: 4 Cu LL O rl li z v) h rl P VI VI E 4 a, hc Fi (d c u w E: (d rl rl a, a ici pi ;o I UMM . Cu Cu N N M M M M MMM I I I I III n a, ho ci (d c u w c ha wrl drl da, da pi
24、 0 .rl k so c4 (d ho oc da, ah (d.P p:v, Gk hg 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-50202A 13 W 777770b 0325530 7 W rl NNcu m mmm Ln mmLn * *=i-* a . . rl N Ma- m mmm M MMM . . I III m mmm h O * rn I c d E .w cd rn al Ei .A bo Ei s
25、! 2 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. . -. T MIL-P-50202A 13 9979906 0325511 O W MIL-P-50202A (AR) 4.4 Quality conformance inspection 4.4.1 Inspection lot formation.-Inspection lots shall comply with the lot formation provisions of
26、MIL-A-48078. In addition. inspection lots of Propellant Charge Assemblies shall contain: from one manufacturer. a. Propellant grains from not more than one lot number b. Inert parts from not more than one interfix lot number from one manufacturer. 4.4.2 Examination.-See MIL-A-48078. a. Sampling plan
27、s. Unless otherwise specified in the Classification of Defects and Test tables, sampling plans for major and minor defects shall be in accordance with MIL-STD-105, Inspection Level II. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-50202A 13
28、 9 - 999906 0325532 2 M- II a %-I cd c 2 5 - rl rl .o. b 00000 oorl x cd w a 4 k a, a a, z m c .#-I x rl nt1 f i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-u i eCu Cu I Na3 MM “Cu N “Cu MMM M MMM e. . . . be= e w.Bpw wm O00 o O00 a*=!- a- a*=!-
29、DO O00 o O00 Ln0 Od *e 0 . a d k a, a 0 c s a Ki a, a c cd a, k c O O a, r-l a G O .Q m rld WF: CdKi kd k a mcd gc kk kO d (dl f B Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-50202A 13 m 9797906 0325514 b m rl lb O rl t I v) 2 O 13 W 5 CU“
30、OMM . Cu cuco MM b?w O0 ;r;f O0 ee vO -0 Orl ci a, a rl 1 O 5 O .P a, o cr) k ci 7 m a .rl k a, a a, z o z k O rl H E2 I rl 8 rl E I vi I c O 2 5 r 2 r w MIL-P-50202A 13 7777906 0325535 B -7 CO Y% M MM M w% Ww% w% o O0 O a- a-=t O o O0 rl . nn CdP VU rl Cdl 11 Provided by IHSNot for ResaleNo reprodu
31、ction or networking permitted without license from IHS-,-,-T- - MIL-P-50202A 13 W 9999906 0325516 T rl “CU In InInIn Ln InInIn a *a . . . CU M* . rl Ln InInIn . M MMM N In v) O III n 0 V nnn n 000 P WVV V k O M rl -P cd -P rn a, El 2 d B 12 Provided by IHSNot for ResaleNo reproduction or networking
32、permitted without license from IHS-,-,- MIL-P-50202A 33 .- 777790b 0325537 I W MIL-P-50202A (AR) 4.4.3 Testing 4.4.3.1 Testing.-Testing and examination of the samples for First Article and Quality Conformance are completely described in the First Article and Quality Conformance tables. 4.4.4 Inspect
33、ion equipment.-The inspection equipment re- quired to perform the examinations and tests prescribed herein is described in the ltParagraph Reference/Inspection Method“ column in the tables starting with paragraph 4.4.2.1. The contractor shall submit for approval inspection equipment designs in accor
34、d- ance with the terms of the contract. See Section 6 of MIL-A-48078 and 6.3 herein, 4.5 .-Test methods and procedures 4.5.1 Materials, components and processes.-Compliance with all requirements of section 3 of this specification shall be ascertained by current and continuing examination of inspecti
35、on and test data to determine that all components (parts, sub- assemblies and materials) have been inspected and tested and found to comply with their respective drawing and specification requirements, and that all specified manufacturing processes have been followed. 4.5.1.1 Visual and mechanical i
36、nspections.-The visual, manual and mechanical inspections and tests shall verify com- pliance with the requirements of sections 3 and 5 of this speci- fication in accordance with 4.4.2 herein and Table I. 4.5.2 Molded.stud assembly.-After production of 2000 Molded Stud Assemblies from each cavity of
37、 each mold, 5 stud assemblies per cavity per mold shall be consecutively produced and inspected for all drawing requirements. If any part fails to meet all drawing requirements, production shall be stopped and the mold corrected. During production, the molding proce- dures shall be monitored for uni
38、formity of molding practices. Suspected deviations in mold product shall be examined to deter- mine if corrective action or mold repair is required. 4.5.3 Radiograph examination for assembly gap or separation defects.-The samples of Rocket Propellant Charge selected shall be exaxined in accordance w
39、ith MIL-STD-453 procedure. The items shtill be X-rayed with the radiographic beam perpendicular to the lowitudinal axis of the Machined Propellant Grain. The radiograph shall be examined to determine if any Molded Stud Assembly is not fully seated on the Machined Propellant Grain shoulder. The penet
40、rameter used in the application specified in MIL-STD-453 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-P-50202A 13 777770b 0325518 3 MIL-P-50202A (AR) shall be designed and constructed to insure a 2 percent sensi- tivity or better. If any Rock
41、et Propellant Charge shows evidence of the Molded Stud Assembly not fully seated on the Machined Propellant Grain counterbore interface as per requirement, it shall be classed defective. Charge submitted as the First Article Samples, shall be radio- graphed in accordance with 4.5.3 and the radiograp
42、hs shall be submitf;ed %o $he Government for evaluation. 4.5.3.1 Radiographic evaluation.-The Rocket Propellant 4.5.4 Strength of rocket propellant charge.-The samples selected for this test shall be conditioned at 70 degrees F plus or minus 5 degrees F for (6) hours minimum. The Rocket Pro- pellant
43、 Charge shall be removed from the conditioning chamber and pulled to destruction within two (2) minutes after removal from the chamber. The test equipment shall be operated to exert a force at the rate of 2.5 inches per minute. If a failure occurs prior to attaining the specified strength requiremen
44、ts, the assembly shall be classed defective. 4.5.5 Static functioning test.-Propellant Charge Assembly, shall meet requirements for Maximum Pressure, Action Time, Total . Impulse and Ignition Delay Time. 4.5.5.1 One half of the samples selected for this test shall be assembled to the applicable test
45、 fixture and equipment and con- minimum of six (6) hours. The propellant charges shall be fired within five minutes after removal from the conditioning chamber and the Maximum Pressure shall be obtained, If any propellant charge fails to meet the requirements, it shall be classed defec- tive. dition
46、ed at plus 130 degrees F plus or minus 3 degrees F for a I 4.5.5.2 The other half of sample propellant charges shall be assembled to the applicable test fixture and equipment and conditioned at minus 40 degrees F plus or minus 3 degrees F for a minimum of six (6) hours. The propellant charges shall
47、be fired within five minutes after removal from the conditioning chamber , and the Action Time, Total Impulse and Ignition Delay Time shall be obtained. If any propellant charge fails to meet the require- ments, it shall be classed defective. 5. Packaging 5.1 Preservation and packaging 5.1.1 Level C
48、.-The propellant, charge, rocket shall be packaged in accordance with Code of Federal Regulations 49CFR parts 171-179. 14 4.: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- -_ MIL-P-50202A (AR) -. MIL-P-50202A 13 m 7777706 0325537 5 m 5.2 Packing 5.2.1 Level C.-The propellant, charge, rocket shall be packed in accordance with Code of Regulations 49CFR parts 171- 179 and in a manner that will assure safe delivery from the manu- facturers plant to the first receiving activity, with 5.3 DOT Marking.-The unit packages shall be
