1、MIL-P-7050bA 13 = 77777Ob 0355Li54 T SM3 745 MIL-P-70 50 6A (AR) 4 April 1988 SUPERCEDING MIL-P-70506 (AR) 28 DFT3ER 1984 MILlTARY SPECIFlCATION PROJECTILE, 155MM: XM864 BASE BURNER ASSEMBLY LOADING, ASSEMBLING AND PACKING This specification is approved for use within the U.S. Army Armament Munition
2、s and Chemical Command, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the loading, assembling and packing for one type of projectile base burner assembly designated as Projectile, 155MM: XM864. 2. APPLICABLE DOCUM
3、ENTS 2.1 Government documents. 2.1.1 Specifications and standards. The following specifications and standards form a part of this specification to the extent specified herein. Unless otherwise specified (see 6.Z!), the issues of these documents shall be those listed in the issue of the Department of
4、 Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solici tat ion. SPECLFICATIONS MILITARY MIL-A-48078 - Ammunition, Standard Quality Assurance Provisions, General Specification For Beneficial comments (recommendations, additions, deletions) and any pertinen
5、t data which may be of use in improving this document should be addressed to: Commander, U.S. Army Armament,Munitions an Chemical Command, Atm. AMSMC-QA. Picatinny Arsenal, New Jersey 07806-5000 by using the self-addressed Standardiza- tion Document Improvement Proposal (DD Form 1426) appearing at t
6、he end of this document or by letter. A3lSC N/A - FCC 1320 DISTRIBTION STATEMENT A. Approved for public release; distribution is unlimited. Licensed by Information Handling ServicesMIL-P-7050bA 13 M 777770b 0355455 1 m STANDARDS MIL I TARY MIL-STD-105 MIL-STD-286 MIL-CTD- 410 MIL-STD-453 MIL-STD-123
7、4 MIL-STD-3235 MIL-P- 70 5 O 6A (AR) - Sampling Procedures and Tables for Inspection by Attributes - Propellants, Solid; Sampling; Examination and Testing - Nondestructive Testing Personnel * Qualification and Certification - Inspection, Radiographic - Pyrotechnics: Sampling, Inspection, and - Singl
8、e and Multi-Level Continuous Testing Sampling Procedures and Tables for Inspection by Attributes i 2.1.2 -.-.-.-.-_I_- Other Government documents I- drawings, and publications. -.-.-I.- The following other.Government documents, drawings, and publications form a part of this specification to the exte
9、nt specified herein. Unless otherwise specified, the issues shall be those in effect on the date of the solicitation. 4B DRAWINGS US ARMY ARMAMENT, RESEARCH, DEVELOPMENT AND ENGINEERING CENTER (ARDEC) PRODUCT AND PACKING DRAWINGS 9381130 - Base Burner Assembly (Copies of specifications, standards, h
10、andbooks, drawings, and publications required by contractors in connection with specific acquis ition functions should be obtained from the contracting activity or as directed by the contracting activity.) 2 Licensed by Information Handling Services- 1 MIL-P-7050bA 13 I 7777706 0355456 3 a a MIL-P-
11、70 50 6A (AR) 2.2 Order of precedence. In the event of a conflict between the text of- this specification and the references cited herein, (except for associated detail specifications, specification sheets or MS standards), the text of this specification shall take precedence. Nothing in this specif
12、ication, however, shall supersede applicabl-e laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS. - 3.1 General. Materials, parts and assemblies shall comply with the requirements specified on the applicable drawings and referenced specifications. 3.2 Proving ground
13、tests. The base burner assembly shall comply with the following requirements when tested in accordance with 2.4.3.1. 3.2.1 - Functioninq. When assembled to projectiles the base burner assembly shall ignite, burn and enable the srojectile to achieve its target range. 3.2.1.1 -I_- Horizontal. range. N
14、o projectile shall have a horizontal range less than 97.5 percent of the mean horizontal - range. Additionally, the range probable error (RPE) of the . ballistic samples shall not exceed .441 percent when fired as specified in 4.5.8. 3.2.2 -. Security. There shall be no premature burst or indication
15、 of metal parts separation in the gun bore or in flight. 3.3. Igniter - requirements. 3.3.1 Loose igniter composition. After consolidation there shall be no visual evidence of loose or flaking igniter composition. Any excess material (flash) shall be removed. 3.3.2 Heat of explosion. When tested in
16、accordance with 4.5.2 the caloric output of the igniter material shall be 1150 - + 50.calories per grain. 3.3.3 Burn time test. When tested in accordance with 4.5.3 the igniter shall burn completely and provide a flame for at least 2.0 seconds. 3.3.4 Radiographic examination of igniters. -I When rad
17、iographed in accordance with 4.5.9 defects shall not exceed the following limits: 3 Licensed by Information Handling ServicesMIL-P-7050bA 13 m 9999906 0355Y57 5 m MIL-P-70 50 6A (AR) a. The combined length of all cracks or laminations shall not exceed 0.20 inches. The width of any crack shall not ex
18、ceed 0.02 inches. b. The combined maximum length of all voids shall not exceed 0.10 inches. No single void shall have a dimension exceeding 0.05 inches. c. The combined maximum length of all foreign matter shall not exceed 0.20 inches. No single particle of foreign material shall have a maximum dime
19、nsion exceeding 0.10 inches, d. There shall be no evidence of a gap between the bottom of the cup and the igniter material in excess of 0.01 inch. 3.4 First article inspection. This specification contains technical provisions for first article inspection. Requirements for the submission of first art
20、icle samples by the contractor shall be as specified in the contract. 3.5 Records of results of contractor conducted examinations and tests. The contractor shall maintain records of the results of all examinations or tests required by this specification. (See 6.5). 3.6 Tool control dimensions. Dimen
21、sions marked tool control shall be gaged during First Article Testing and after eight hours maximum production on each machine in operation and prior to any tooling change. Where destruction of components is necessary to inspect these dimensions, measurements of the tool may be substi- tuted provide
22、d the contractor has established correlation between the tool dimensions and the component dimensions prior to the start of production. The contractor shall be responsible for maintaining adequate surveillance to assure that drawing requirements are being met throughout the life of the tool. Correct
23、ive action will immediately be instituted by the contractor. In the case of, pressed igniters a correlation between punch dimensions and dimensions of the igniter surface need not be established. Inspection of the punch alone is adequate. 3.7 Radioqraphic examination of base burner assemblies. Sampl
24、ed assemblies shall be radiographed and examined for the following : a. Missing components. b. Misassembled components. c. Igniters facing the wrong way. d. Foreign matter present. 3.8 Workmanship. All parts and assemblies shall be fabricated, loaded and assemblied in a thorough, workmanlike 4 Licen
25、sed by Information Handling ServicesNIL-P-7050bA 13 m 9777706 0355458 7 m MIL-P- 7 O 5 O 6A (AR) I l l l I I I I I I ! I I ! d . .- I Q e manner. grease, rustr and other foreign matter. The cleaning method used shall not be injurious to any parts nor shall the parts be contaminated by the cleaning a
26、gents. Exterior surface coatings shall be continuous; however, a few light scratches that do not expose base material or remove the protective coating, are permitted. All required marking and stamping shall be neat and sharply defined. Sealants, lubricants and adhesives shall be utilized in accordan
27、ce with the appropriate drawings. 3.8.1 igniter CUB. in addition to the above the igniter cups shall be free of holes, seams, scale, laminations, porosity, inclusions o imbedded foreign matter. They shall be free of burrs, sharp edges, cracks, dirt, 3.8.2 iqniter cup assembly. The stepped area of th
28、e pressed composition need not be a perEect form. Damaged areas up to 25 percent of the total surface area are allowed. Damage in excess of 25 percent is cause or rejection. 3.8.3 Marking. Marking on completed base burner assemblies shall be in accordance with the applicable drawing. The contractor
29、shall develop and maintain a processing procedure which assures correct designation of the propellant lot aiid batch number on the Base Burner Assembly. 4. QUALITY ASSURANCE PROVISION 4.1 Responsibility for inspection. Except as otherwise specified in the contract or purchase order, the contractor m
30、ay use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to
31、 assure supplies and services conform to prescribed requirements. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements and for the provisions of MIL-A-48078 as specified herein. 4.1.1 Responsibility for complia
32、nce. All items must meet all requiremnts of sections 3 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specif ication shall not relieve the contractor of the r
33、esponsibility of assuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling in quality conformance does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to
34、 acceptance of defective material. 5 Licensed by Information Handling ServicesMIL-P-7050bA 13 W 77777Ob 0355457 7 W MIL-P-70506A (AR) 4.2 Classification -_I_- of inspectiolis. The following types of inspection shall be conducted on this item: a. First Article Inspection b. Quality Conformance Inspec
35、tion 4.3 First - article inspection. 4.3.1 Submission. The contractor shall submit a first article sample as designated by the contracting officer for evaluation in accordance with the provisions of 4.3.2. The first article sample shall consist of the following items in the quantities as indicated.
36、- Part descr iptioq Drawinqs Quantity Base burner assemblies 9381130 12 Weather seals 9390991 10 Igniter 12630572 40 Igniter Composition 12630571 2 ounces Retainer Assembly to 9381130 Base prior to assembly of igniter housing Igniter Housing Assembly 9381130 5 5 6 Licensed by Information Handling Se
37、rvicesMIL-P-7050bA 13 M 7779706 0355qbO 5 M F: O 0 u a, VI c a, rl u .rl 0 u Id 0 VI u F I li *rl .rl .rl w 4 F9 b. c c r: e U C U C I P I a . r !- I- cz F r Y n VI .o IL Y Z O F= e O 2 E c - U s 3 pr) CO * m 3 - * O W F 12 Licensed by Information Handling ServicesMIL-P-7050bA 13 m 9797906 03554bb b
38、 M d fs t d : rlrl Co rnrn rn . o u a, c .rl m ci a, u a 2 a, m Id a r= a, a, 3 ci a, .Q a a id- a, rr c $ .rl w 3r rl c, u a, LI LI O u u O rl On Url a, uci ao -Qz -4 c ma Ti a, c5 v a, .rl c5 ci a mo uc m a, a, a, a,- L4.d r= Urn o u O x-u0 2 wpi a .rl ci m e 24 8 u O 3 Li O O QI w O a, u c a, a 3
39、 w .rl rll Li a, r= m c, a, LI .d O h rl a E a, m B m LI a, ci w m a a, c, u a, QI m c .4 a, P O E+ rl . i - L3 c3 n E Licensed by Information Handling Servicesa O !3 L) w PI cn z H w L) H O $ E 0 L) N R 2i 3 a MIL-P-7050bA 13 7777906 03554b7 W rl (d a, 3 P m 4 .rl W 3 rl Co M M o c 00 JW BM u- g2 a
40、4.d a 43 a, 04 c c) .rl a, w Sa, a, rn a ma ma a, a, c u5 xc w4 rll 14 P Licensed by Information Handling Servicesc c c u C U C I P I f . t- I- l- r F cn 1 MIL-P-7050bA 13 77777Ob 0355468 T rlrl rl rl rda (d rd 77 7 5 rnrn m rn .ri .ri . .ri .ri 33 3 3 rld rl 03 mm m cr) 0. . ar o U O c4 14 4-1 (u O
41、 U ar m u D !i c ar 4 a I 3 O w rl (dl dl 15 Licensed by Information Handling Services2 O H FI u w 14 rn z H w O i !h 2 O u N E-i H 2 D a MIL-P-70506A 13 7777906 0355L167 1 rl 8 t rl ff r-i (d a, VI Li a, (d 5 s” I- (u * di * o c t: Wl g! S! ar E rl rlrl Co MM M o* o a ?G o c A 2 k O 3 Li O O QI YI
42、h M Co (5, 3 o n O UY 7 E L O L c 16 Licensed by Information Handling Services. MIL-P-7050bA 13 m 7779706 0355970 8 W rl 8 t 4 a a, rn Id Pa O ci 3r rl .Q v1 E 2 O ci u O .FI u PI a! u 5 rn O rl u al :F9 !2 rl rlrlrl o0 m mmq m . e e oQ dP dP oQ OQ O O In o o* ID O Oie e rl rio0 O a a, C .FI w a, a
43、a, C O 2 LI O s -FI rn rn .FI E rl Id a, rn Li a, L: ci rlrl mm a, rnrn tn C uLi %-I a, a, 01 cc rn cia .FI m E cual 33 rl m u ma, a, uww sa3500 alci LIuuuCc 0=10COO .FI ci .FI !3 .FI .FI u o u reject the material batch. If one sample fails, take a second double sample. If one or both samples fail f
44、rom the second double sample then reject the batch. Accept a batch only when both samples of a double sample meet the requirement. 4.5.3 Burn time test. Complete igniter assemblies selected in accordance with 4.4.3.2 shall be tested to determine duration of flame, Suitable squib or electric match pl
45、aced 1/4 to 1/2 inch from the open end of the cup shall be used to initiate the igniter material. Once lit, the igniter must produce a flame for at least two seconds. If the burn time is short, the igniters represented by the test sample shall be rejected. If after three attempts an igniter can not
46、be initiated, the igniter and the group it resresents shall be rejected. The burn time shall be recorded by I use of a stopwatch or an electric eye. This test shall be performed at ambient temperature and pressure and must be done in a well ventilated area. e 4.5.4 Iqniter consolidation load. The co
47、ntractor shall provide adequate controls to assure the compliance of each igniter with the specified load requirement and dwell time. For verification each consolidation machine shall be calibrated for consolidation load and dwell time at the beginning of each production shift or portion thereof usi
48、ng a load cell and stoswatch. In addition, a suitable warning device shall be assembled to each consolidation machine and calibrated at the same tiine as the consolidation machine. If, during the loading of the igniter the pressure drops before the applicable consolidation load requirement or the dw
49、ell time is short of the drawing requirement, that igniter shall be rejected. 4.5.5 Iqniter charge weight. The contractor shall provide adequate controls to assure the compliance of each igniter with 20 Licensed by Information Handling ServicesMIL-P- 7 O 5 O 6A (AR) e the specieied charge weight requirement. At least once per hour for each igniter loading press the contractor will verify the accuracy of the igniter charge weight. To accomplish this an igniter cup assembly (cup) shall be identified and weighed. This cup assembly shall then Se inserted
