1、 INCH-POUND MIL-DTL-46992E (OS) 16 November 2006 SUPERSEDING MIL-DTL-46992D (OS) 08 September 2003 DETAIL SPECIFICATION CUTTER, DELAY, PROPELLANT ACTUATED, M21 (2 SEC) AND M22 (10 SEC) This specification is approved for use within the Naval Sea Systems Command, Department of the Navy, and is availab
2、le for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for the M21 (2 SEC) and M22 (10 SEC) Propellant Actuated Cutter (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified i
3、n sections 3, 4, or 5 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that the
4、y must meet all specified requirements of documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications and standards. The following specifications, standards, and handbooks form a part of this document to the extent spec
5、ified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-W-5625 Webbing, Textile, Nylon, Tubular MIL-D-85866 Composition, Delay Z-1 MIL-P-22264 Powder, Ignition, Gasless, A-1A Comments, suggestio
6、ns, or questions on this document should be addressed to Commander, Indian Head Division, Naval Surface Warfare Center, Technical Information Products Branch (E143), 101 Strauss Avenue, Indian Head, MD 20640 5035, or emailed to amanda.pennnavy.mil. Since contact information can change, you may want
7、to verify the currency of this information using the ASSIST Online database at http:/assist.daps.dla.mil. AMSC N/A FSC 1377 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-
8、,-,-MIL-DTL-46992E (OS) 2 DEPARTMENT OF DEFENSE STANDARDS MIL-STD-331 Fuse and Fuse Components, Environmental and Performance Tests for MIL-STD-810 Environmental Engineering Considerations and Laboratory Tests MIL-STD-1168 Ammunition Lot Numbering and Ammunition Data Card (Copies of these documents
9、are available online at http:/assist.daps.dla.mil/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a
10、 part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. DOCUMENTS WS 21535 Ignition Device, Percussion, PVU-1/A DRAWINGS Naval Surface Warfare Center, Indian Head (CAGE Codes 19200 and 19203) 83
11、8AS115 Propellant, Double Base 838AS208 Propellant, Double Base 8873322 Cutter Tester DL8875978 Cutter, Propellant Actuated, 2 Second Delay, M21 DL8875979 Cutter, Propellant Actuated, 10 Second Delay, M22 8875988 Spring (Application for copies of these specifications and drawings should be addressed
12、 to the Commander, Indian Head Division, Naval Surface Warfare Center (E143), 101 Strauss Avenue, Indian Head, MD 20640-5035.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documen
13、ts are those cited in the solicitation or contract. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) E 1742 Standard Practice for Radiographic Examination (Copies of this document are available online at http:/www.astm.org or from the American Society for Testing and Materials Customer Service, 100
14、 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-46992E (OS) 3 AMERICAN SOCIETY FOR QUALITY (ASQ) A8402 Quality Management and Quality Assurance - Vocabulary (Copies of this document are a
15、vailable online at http:/e-standards.asq.orq/ or from the American Society for Quality, 600 North Plankinton Avenue, Milwaukee, WI 53203.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence
16、. 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 accordance with 4.2. 3.2 General. The cutte
17、rs shall comply with all requirements on drawings listed on DL8875978 or DL8875979. 3.3 Materials. All materials used in the manufacture of the cutters shall conform to the specifications referred to on the respective drawings unless specific approval in writing covering a departure has been obtaine
18、d from the cognizant Navy design activity prior to manufacture. When alternate methods of manufacture are specified in the drawings, the bidders selections shall be clearly stated in the proposal. Physical properties required shall be uniform throughout the part within specified tolerances. 3.4 Prim
19、ary components. For the purpose of this specification, the ignition material (MIL-P-22264), the primer (WS 21535), the delay mix (MIL-D-85866), and the output charge (Drawing 838AS115 or alternate 838AS208) are defined as primary components. Only primary components from a single lot shall be used in
20、 a production lot of cutters. One primary component production lot may be used in more than one cutter production lot. 3.4.1 Percussion Primers. Only percussion primers from a lot manufactured within the last 24 months or recertified within the last 12 months shall be used in the cutter. 3.5 Inspect
21、ions. 3.5.1 Primer x-ray. All primers shall be x-rayed and screened prior to assembly into the primer retainer (see 4.4.4). 3.5.2 Primer sensitivity. The primer shall fire when drop tested at an energy level of 26-inch-ounces in a primer retainer assembly (see 4.4.5). 3.6 Spring load and spring embr
22、ittlement. The springs shall not break and shall meet the requirements of Drawing 8875988 when tested as specified in 4.4.6 and 4.4.7. 3.7 Corrosion resistance. No component (except for the delay body, washer (retainer), and primer retainer) shall exhibit white corrosion products after one hundred h
23、ours of salt spray testing. The delay body, washer, and primer retainer shall not exhibit white corrosion products after 24 hours of salt spray testing (see 4.4.8). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-46992E (OS) 4 3.8 Airtightnes
24、s. All knife delay assemblies shall be leak tested and shall not exhibit a leakage rate in excess of 1 x 10-4cc of helium per second at a pressure differential of one atmosphere (see 4.4.9). 3.9 Lanyard assembly. The lanyard assembly shall withstand a tensile load of 200 pounds minimum without separ
25、ation of parts (see 4.4.10). 3.10 Radiographic examination. After completion of assembly, all cutters shall be radiographically examined for proper assembly and presence of components. Any evidence of misassembly or missing parts shall be cause for rejection of that assembly (see 4.4.11). 3.11 Staki
26、ng. The staking between the firing pin assembly and case shall withstand a breakaway torque of 25 inch-pounds without turning or loosening of the components (see 4.4.12). 3.12 Vibration. The cutter shall withstand the vibration test without evidence of any disintegration of the primer, delay column,
27、 propellant, or damage of any component (see 4.4.13). 3.13 Non-withdrawal and withdrawal of cotter pin. The safety cotter pin shall not withdraw from the cutter when a pull force of 10 pounds minimum is applied to the pin. The pin shall be withdrawn when a pull force of up to 30 pounds maximum is ap
28、plied to the pin (see 4.4.14). 3.14 Functional. 3.14.1 Initiation. The firing pin shall not be released when a force of 10 pounds is gradually applied to the lanyard assembly. The cutter shall function when the firing pin is released. The firing pin shall release when a force equivalent to dropping
29、a 20-pound weight from a height of 3 1/3 inches is applied to the lanyard assembly (see 4.4.16). 3.14.2 Cutting. The cutter shall completely sever two reefing lines when functioned (see 4.4.16). 3.14.3 Delay time. The delay time shall be as indicated in Table I when tested in accordance with 4.4.16
30、(see 6.6.2). 3.14.4 Functioning over temperature range. The cutter shall function satisfactorily without failure (see 6.6.1) throughout the temperature range of -65 to 165 F when tested in accordance with 4.4.16. TABLE I. Delay time. Delay time (seconds) Temperature (F) M21 M22 -65 70 165 2.3 0.7 2.
31、0 0.4 1.8 0.6 11.0 2.0 10.0 1.0 9.5 1.5 3.14.5 Functioning at high setback. The cutter shall function satisfactorily, as evidenced by complete severing of the reefing lines when a shock force of 700 g minimum is applied to the cutter (see 4.4.17). 3.14.6 Misfire. There shall be no misfires. Provided
32、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-46992E (OS) 5 3.15 Workmanship. The workmanship requirements are as specified on the drawings, specifications, and the following. Workmanship and finish shall be in accordance with the highest grade pra
33、ctice used in manufacturing military weapons. Finished items and parts shall not exhibit poor material and processing such as seams, laps, laminations, cracks, visible steps, sharp edges, nicks, scratches, butts, deformations, and missing operations that may affect assembly, serviceability, function
34、ing, operation, appearance, or safety. Fins and other extraneous metal shall be removed from cast or forged parts. Hammering to shape, salvage operations (including repair by welding), or other similar practices shall not be permitted without prior approval of the contracting officer. Surface coatin
35、gs shall be continuous except for a few light scratches not exposing base material. 3.15.1 Metal defects. All components shall be free from cracks, splits, cold shuts, inclusions, incomplete or damaged threads, porosity, or any similar defect. 3.15.2 Burr. No part shall have a burr which might inter
36、fere with the assembly or function of the item or which might be injurious to personnel handling the item. 3.15.3 Foreign matter. No part or assembly shall contain chips, dirt, grease, rust, corrosion, or other foreign matter. 3.15.4 Visual and Dimensional Examination. The components shall be visual
37、ly and dimensionally inspected to ensure compliance with the drawings. 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.2) b. In process inspection (see 4.3) c. Lot acceptance inspection (see
38、 4.3.1.4). 4.1.1 Verification terms and definitions. Reference shall be made to ASQC A8402 to define the verification terms used. 4.2 First article inspection. First article inspection shall be performed after award of contract and prior to production. After inspection and provisional acceptance at
39、the source, sample shall be inspected for all requirements of the drawings and specifications at a Government laboratory or such other facility specified in the contract. First article inspection shall be performed on sample units which have been manufactured in the same manner, using the same mater
40、ials, equipment, processes, and procedures as to be used in regular production. All parts and materials including packaging and packing shall be the same as used for regular production and shall be obtained from the same source of supply (see 6.2 and 6.4). Unless otherwise specified, all inspections
41、 shall be performed in accordance with the test conditions specified in MIL-STD-810. 4.2.1 Sample size. Unless otherwise specified, the first article shall consist of 28 assembled units, 10 complete sets of components and subassemblies (that is, 10 each of every component and 10 each of the lanyard
42、and firing pin assemblies and 10 knife delay assemblies), and one set of metal components, without coating or protective finish, for dimensional and visual examination. From the 28 assembled units 12 shall be submitted to ambient vibration and 7 to high setback. The vibration units will be submitted
43、 to the functioning over temperature range after vibration. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-46992E (OS) 6 4.2.2 Inspection routine. The first article sample shall be subjected to the inspections specified in Table II. TABLE II
44、. First article inspection. Inspection Requirement paragraph Test method paragraph Number of samples to be inspected Visual and dimensional inspection of components Hardness Spring load Embrittlement of spring Corrosion resistance Airtightness Lanyard assembly pull test Radiographic Staking Vibratio
45、n Non-withdrawal and withdrawal of cotter pin Firing pin release and non-release Functioning over temperature range Functioning at high setback 3.15 3.3 3.6 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14.1 3.14.4 3.14.5 4.4.1 4.4.2 4.4.6 4.4.7 4.4.8 4.4.9 4.4.10 4.4.11 4.4.12 4.4.13 4.4.14 4.4.15 4.4.16 4
46、.4.17 10 components 5 components 5 5 3 components 10 10 28 28 12 21 28 21 7 4.2.3 First article sample failure. The first article sample shall meet all the requirements in Table II. The Government reserves the right to terminate its inspection upon any failure of assembly or component in the sample
47、to comply with the stated requirements. In the event of failure of any sample, the Government reserves the right to require the contractor to take corrective action and submit a new sample or portion thereof. 4.3 In process inspection. 4.3.1 Inspection of product. Inspection of product shall consist
48、 of Tables IV and V inspections, done prior to delivery. 4.3.1.1 Submission of product. A lot shall consist of an identifiable group of assembled cutters containing metal parts assemblies produced by a homogeneous process and loaded with one lot of knife delay assemblies. Unless otherwise specified
49、by the contracting activity, formation and identification of lots shall be in accordance with Table III. 4.3.1.2 Lot sample size. A lot shall consist of an identifiable group of assembled cutters that has successfully completed the requirements of Table IV. The lot acceptance sample size to be in accordance with Table III. TABLE III. Lot sample size. Lot Size Functional/ Firing pin release High setback Retain units Tot
