1、i MIL-P-82868 13 m 9997906 053q460 2 W I INCH-PO- I MIL-P-828(OS) 13 Mav 1992 SUPERSEDING WS 161C 2 February 1977 MILITARY SPECIFICATION PRIMER, PERCUSSION, MK 161 MOD O his specification is approved for use by the Naval Sea Systems Command, Department of the Navy and is available for use by all Dep
2、artments and Agencies of the Department of Defense, 1. SCOPE 1.1 Scope. This specification establishes the minimum requirements for the Percussion Primer, MK 161 MOD O, herein referred to as the “primer“. 2: APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. The follo
3、wing specifications and standards form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the soli
4、citation (see 6.2). SPECIFICATIONS FEDERAL PPP-B-636 Boxes, Shipping, Fiberboard Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Indian Head Division, Naval Surface Warfare Center, St
5、andardization Branch (Code 3730), Indian Head, MD 20640-5035 by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or sending a letter. AMSC NIA FSC 1390 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. Provid
6、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILITARY MIL-D-3464 STANDARDS MILITARY MIL-STD- 129 MIL-STD-33 1 MIL-STD-453 MIL-STD-1167 MIL-STD-1168 DOD-STD-2 101 Desiccants, Activated, Bagged, Packaging Use and Static Dehumidification Marking for Shipme
7、nt and Storage Fuze and Fuze Components, Environmental and Performance Tests for Inspection, Radiographic Ammunition Data Card Ammunition Lot Numbering Classification of Characteristics (Unless otherwise indicated, copies of federal and military specifications and standards are available from the St
8、andardization Documents Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 191 11-5094.) 2J.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless ot
9、herwise specified, the issues shall be those cited in the solicitation. DRAWINGS NAVAL SEA SYSTEMS COMMAND (CAGE Code lo001 or 5371 1) LD 166537 Test Set, MK 135 MOD O 2494528 Test Fixture Assembly 2645 160 2645488 Palletizing Domestic Unit Load 3028626 3028693 3028694 Shipping Condition for Primers
10、, MK 161 MOD O Primer, Percussion, Assembly, MK 161 MOD O Firing Pin For Test Set, MK 135 MOD O Head Assembly Adapter, 76mm, For Test Set MK 135 MOD O 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. c o a a i MIL-P-2b 13 9799906 0534462 6 MILP-82
11、868(0!3) 5367224 Cartridge, 76mm/62 Caliber, Test Assembly (Application for copies of NAVSEA drawings should be addressed to: Commanding Officer, Naval Ordnance Station, Crane Division, Naval Surface Warfare Center, Attn: Code 802, Louisville, KY 402 14-500 1 .) NAVAL SURFACE WARFARE CENTER, INDIAN
12、HEAD DIVISION (CAGE Code 14083) MT SK 834 Pressure Bomb for Primer, Percussion, 76mm/62 Caliber (Application for drawing should be addressed to: Commander, Naval Surface Warfare Center, Indian Head Division, Data Control Branch (Code 3720), 101 Strauss Avenue, Indian Head, MD 20640-5035.) PUBLICATIO
13、NS NAVAL SEA SYSTEMS COMMAND (CAGE CODE 1ooO1) OD 5823 Sensitivity Test of Primers and Detonators (Application for copies of ODs should be addressed to: Commander, Port Hueneme Division, Naval Surface Warfare Center, NAVSEA Data Support Activity (Code 5H30), Port Hueneme, CA 93043.) CODE OF FEDERAL,
14、 REGULATIONS (CFR) 49 CFR 100-199 Transportation (Copies of CFRs are available from the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.) 2.2 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text
15、 of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection (see 6.4) in accordanc
16、e with 4.4. 3.2 Characteristics. The primer shall conform to the requirements specified herein and on Drawing 3028626. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-._ . - - -. -_i MIL-P-2b 13 W 9999906 0534463 1 - Parameter Pressure delay time,
17、tdp, ms Peak chamber pressure, Ppeak, psi, upper limit lower limit Time to 90% Ppeak, teff, ms Pressure time trace slope, dpldt, kpsi/ms MILP-82868 (OS) Requirement . The number following the classification symbol indicates the serial number of the characteristic. Requirements not annotated with a c
18、lassification code are classified as minor. 4.7 Methods of inspection. 4.7.1 Radiographic inspection. The primer shall be subjected to a radiographic inspection in accordance with MIL-STD-453. The primer shall be mounted in the vertical position with the primer stock up and X-rayed perpendicular to
19、its axis, focused at a point 0.25 f 0.20 inch from the stock face. Any primer which meets the requirements of 3.3 but appears to have been misassembled shall be subjected to detail strip and shall meet the requirements of 3.5. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted wi
20、thout license from IHS-,-,- I MIL-P-ZBbB 13 99999Ob 053i.1466 3 W MIL-P-82868 (OS) dd d O000 O000 O0 O O N wu VIVI3 dd O000 O000 O0 VI N t. m 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-P-2b 13 9999906 0534467 5 4.7.2 as follows: a. b. C.
21、d. e. f. 4.7.3 MILP-82868 (OS) Determination of moisture content. Moisture analysis procedure for the black powder shall be Ten grams (log) of black powder from each sample primer shall be tested in the granular form for moisture content. The black powder shall be removed from primer tubes and place
22、d in a dry container with a tight cover. Black powder must not be exposed to the atmosphere for more than 3 minutes. Sample containers must be covered and placed in a desiccator until ready to test the moisture content. Carefully weigh 2.0 f 0.1 g of sample into a tared weighing dish or container. T
23、he sample shall be weighed to the nearest O. 1 mg. The black powder must not be exposed to the atmosphere for more than 3 minutes. Uncovered samples shall then be placed in an oven at 70 to 75 degrees Celsius (OC). Do not draw vacuum. After 4 hours minimum, remove samples from the oven, cover, and p
24、lace in a desiccator to cool. After cooling, carefully weigh the samples to the nearest O. 1 mg. Calculate the percent moisture as follows: Percent moisture = E x 100 where C = A -B C . E=A-D and A = sample weight plus container weight, undried, g B = undried container weight, g C = undried sample w
25、eight, g D = sample weight plus container weight, after drying, g E = weight difference, after drying, g Detail strip. The primer shall be disassembled to determine conformance to all the discernible critical and major characteristics specified on the applicable documents. All inspections shall be p
26、erformed at the highest level of assembly possible. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-82868 13 9999906 0534468 7 = MLP-82868 (OS) 4.7.4 No-fire. The primer stock assembly (see 6.7.1) shall be assembled into Test Set MK 135 MOD O
27、 (LD 166537) and tested in accordance with the appropriate procedures of OD 5823 using the test equipment specified below. The ball drop height shall be two inches. a. Firing pin; Drawing 3028693 b. Primer stock assembly adapter; Drawing 3028694 c. Test fixture; Drawing 2494528 d. Steel ball approxi
28、mately 2.169 inches diameter, 24.00 f 0.02 ounces. 4.7.5 Functional (closed bomb) and all-fire test. A closed bomb, conforming to Drawing MT SK 834 or an equivalent bomb previously approved by the contracting activity, shall be used. The primer assembly shall be assembled into the bomb and tested us
29、ing the appropriate procedures of OD 5823. A steel ball weighing 24.00 f 0.02 ounces shall be dropped from a height of 12 inches onto the firing pin to initiate the primer. Instrumentation having at least the following accessories shall be used to record test data during this test: a. Time measureme
30、nt within f 0.5 percent of true values , b. Pressure measurements within f 1.0 percent of true values. 4.7.5.1 Procedure. Primers shall have been conditioned at 90 f 3F for at least 4 hours prior to testing. The primer shall be loaded into the closed bomb and fired within 3 minutes after removal fro
31、m the conditioning box. The input energy to the firing plug shall be 1.5 + 0.1, -0.0 foot-pounds. The firing pin shall 0 conform to Drawing 3028693 or equivalent if previously approved by the contracting activity. Pressure versus time shall be recorded. Measure and record the following (see 6.7 for
32、definitions); a. Pressure delay time, t+, milliseconds (ms) b. Peak chamber pressure, Ppeak, pounds per square inch (psi) c. Time to 90% Ppeak, toff, ms d. Pressure time trace slope, dp/dt, kpsi/ms (see figure 1) 4.7.6 Vibration. The primer shall be subjected to the transportation vibration test of
33、MIL-STD-331, Test B1, Section 6.1.2, Table B1-4, except that the orientation of each primer during this three- phase test shall be as follows: a. Phase I: Primer axis horizontal. b. Phase II: Primer axis vertical, primer stock down. c. Phase III: Primer axis vertical, primer stock up. 9 Provided by
34、IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- I- _- _- 1 MIL-P-2868 13 M 9999906 0534469 9 M 3. e The primer shall be marked with a line in the axial direction at the junction of the stock and tube indexing their initial relative position, in order to determi
35、ne the integrity after vibration. The primer shall be rigidly mounted to the vibration table at the primer stock After vibration, the primer shall be subjected to the tests of 4.3.5. 4.7.7 Ballistics. The primer shall be assembled into a 76mm primer test assembly cartridge in accordance with Drawing
36、 5367224. All components shall be from service acceptable lots. The propellant shall be conditioned at 90 f 15F for 24 hours minimum prior to assembly of the propelling charge. All other components shall be conditioned at 85 f 20F for 24 hours minimum prior to assembly of the propelling charge. The
37、assembled propelling charge shall be conditioned at 90 f 5F for 48 hours minimum immediately prior to firing. The rounds shall be fired in a 76mm/62 caliber percussion fired gun with a first quarter life barrel. Projectile ejection time shall be recorded. 4.7.8 Inspection of packaging. The packaging
38、, packing, and marking shall be visually examined for conformance to section 5. 5. PACKAGING 5.1 Packaging (Level A). The primer shall be packaged in accordance with Drawing 2645160. Eight units of desiccant, conforming to Type I of MIL-D-3464, shall be placed in each container prior to securing the
39、 cover. 5.1.1 Inert components. Components and subassemblies shall be packaged in commercial fiberboard containers meeting the requirements of PPP-B-636. Each container shall incorporate corrugated or solid fiberboard dividers or collars suitable for preventing damage in handling and transportation.
40、 The gross weight of the contents shall not be greater than 70 pounds, 5.2 Packing (Level A). Primers packaged in accordance with 5.1 shall be packed in accordance with Drawing 2645160. 5.3 Palletization. Palletization of primers packed in accordance with 5.2 shall. be in accordance with Drawing 264
41、5488. 5.4 Marking. In addition to any special marking required by the contract or purchase order (see 6.2), all markings shall be in accordance with MIL-STD-129 and 49 CFR 171-178. 5.5 Ammunition data cards. When specified, in the contract or purchase order (see 6.2), one ammunition data card prepar
42、ed in accordance with MIL-STD-1167 shall be placed in the top of each pack (see 5. i), two shall be forwarded to the contracting activity, and two shall go to the ammunition depot receiving the primers, For Navy acquisition, two data cards shall also go to each of the activities listed in 6.6 (see 6
43、.3). 5.6 Ammunition lot number. Ammunition lot number shall be in accordance with MIL-STD-1168. 6. NOTES (This section contains information of a general or explanatory nature that may be helpful but is not mandatory). 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without li
44、cense from IHS-,-,- -c MIL-P-2b 13 77999Ob 0534470 5 MTLp-S2868(0S) 6.1 Intended use. The MK 161 MOD O Percussion Primer is intended for use as an initiator in the 0 76mm/62 caliber percussion fired ammunition. 6.2 Acquisition requiremenfs. Acquisition documents must specifj the following: a. b. C.
45、d. e. f. g. h. i. j. k. Title, number, and date of this specification. Issue of DODISS to be cited in the solicitation, and if required, the specific issue of individual documents referenced (see 2.1.1 and 2.1.2). Whether a first article sample is required (see 3.1). The facility designated to perfo
46、rm first article inspection (see 4.4). The facility designated to perform quality conformance inspection if other than the contractor (see 4.1). Inspection lot quantity if other than as specified in 4.5.1. Inspection lot sample quantity if other than as specified in 4.5.2. Test and examination proce
47、dures and equipment to be used (see 4.3, 6.3 and 6.6). Special marking, if required (see 5.4). Ammunition data cards (see 5.5 and 6.3). Safety precautions (see 6.5). 6.3 Consideration of data requirements. The following data requirements should be considered when this specification is applied on a c
48、ontract. The applicable Data Item Descriptions (DIDs) should be reviewed in conjunction with the specific acquisition to ensure that only essential data are requested/provided and that the DIDs are tailored to reflect the requirements of the specific acquisition. To ensure correct contractual applic
49、ation of data requirements, a Contract Data Requirements List (DD Form 1423) must be prepared to obtain the data, except where DOD FAR Supplement 27.475-1 exempts the requirement for a DD Form 1423. Reference paragraph DID Number DID Title 4.3 DI-NDTI-80603 Test Procedure 5.5 DI-MISC-80043 Ammunition Data Card The above DIDs were cleared as of the date of this specification. The, c
