1、 INCH-POUND MIL-DTL-82762B 21 September 2004 SUPERSEDING MIL-C-82762A 10 September 1992 DETAIL SPECIFICATION CUTTER, DELAY, PROPELLANT ACTUATED, MLU-58/B This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers
2、 the requirements for the MLU-58/B Propellant Actuated Cutter (see 6.1) 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents cited in other sections of this specification or recom
3、mended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they 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
4、 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a 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. DEPART
5、MENT OF DEFENSE SPECIFICATIONS MIL-W-5625 Webbing, Textile, Nylon, Tubular MIL-D-85866 Delay Composition, Z-1 MIL-P-22264 Powder, Ignition, Gasless, A-1A Comments, suggestions, or questions on this document should be addressed to Commander, Indian Head Division, Naval Surface Warfare Center, Technic
6、al Information Branch (Code 4230), 101 Strauss Avenue, Indian Head, Maryland 20640-5035, or emailed to pennamih.navy.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at www.dodssp.daps.mil. AMSC N/A FSC 1377 D
7、ISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-82762B 2 DEPARTMENT OF DEFENSE STANDARDS MIL-STD-331 Fuse and Fuse Components, Environmental and Performance Tests
8、 for MIL-STD-810 Environmental Test Methods and Engineering Guidelines MIL-STD-1168 Lot Numbering of Ammunition (Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch/ or www.dodssp.daps.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Buildi
9、ng 4D, Philadelphia, PA 19111-5094.) 2.2.2 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 otherwise specified, the issues of these documents are those cit
10、ed in the solicitation or contract. Documents Naval Surface Warfare Center, Indian Head (CAGE Codes 19200 and 19203) WS 21535 Ignition Device, Percussion, PVU-1/A Drawings Naval Sea Systems Command (CAGE Code 53711) DL6261278 Cutter, Propellant Actuated, 4 Second Delay, MLU-58/B Naval Surface Warfar
11、e Center, Indian Head (CAGE Codes 19200 and 19203) 8873322 Cutter Tester (Application for copies should be addressed to Commanding Officer, Naval Surface Warfare Center, Indian Head, Technical Information Branch (Code 4230), Indian Head, MD 20640.) 2.3 Non-Government publications. The following docu
12、ments form a 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. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) A 108 Steel Bars, Carbon, Cold Finished Standard Quality A 276 Stainless and
13、 Heat-Resisting Steel Bars and Shapes B 211 Aluminum Alloy Bars, Rods and Wire Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-82762B 3 B 221 Aluminum Alloy Extruded Bars, Rods, Wire, Shapes, and Tube E 1742 Standard Practice for Radiographic
14、 Examination (Copies of this document are available online at http:/www.astm.org/cgi-bin/SoftCart.exe/STORE/standardsearch.shtml?L+mystore+afpt6301+1062008944 or from the American Society for Testing and Materials Customer Service, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) AMERICAN S
15、OCIETY FOR QUALITY ASQ A8402 Quality Management and Quality Assurance Vocabulary (Application for copies should be addressed to the American Society for Quality, PO Box 3005, 611 E. Wisconsin Ave., Milwaukee, WI 53201-4606) SOCIETY FOR AUTOMOTIVE ENGINEERS SAE AS 13572 Spring, Helical, Compression a
16、nd Extension (Copies of SAE documents are available online at http:/www.sae.org/servlets/index or from SAE World Headquarters, 400 Commonwealth Drive, Warrendale, PA 15096-0001 USA) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein
17、(except for related specification sheets), the text 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
18、 to first article inspection (see 6.4) in accordance with 4.3. 3.2 General. The cutters shall comply with all requirements specified on DL6261278. 3.3 Materials. All materials used in the manufacture of the cutters shall conform to the specifications referred to on the respective drawings unless spe
19、cific approval in writing covering a departure has been obtained 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 un
20、iform throughout the part within specified tolerances. 3.4 Primary 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 compone
21、nts. Only primary components from a single lot shall be Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-82762B 4 used in a production lot of cutters. One primary component production lot may be used in more than one cutter production lot. 3.4
22、.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 Inspections. 3.5.1 Primer x-ray. All primers shall be x-rayed and screened prior to assembly into the primer retainer (see 4.5.4)
23、. 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 4.5.5). 3.5.3 Spring load and spring embrittlement. The springs shall not break and shall meet the requirements of Drawing 8875988 when tested as specified in 4.
24、5.6 and 4.5.7. 3.5.4 Corrosion resistance. No component (except for the delay body, Drawing 6261279; washer (retainer), Drawing 6261280; and primer retainer, Drawing 8875985) shall exhibit white corrosion products after one hundred hours of salt spray testing. The delay body, washer, and primer reta
25、iner shall not exhibit white corrosion products after 24 hours of salt spray testing (see 4.5.8). 3.5.5 Leak test. All knife delay assemblies shall be leak tested and shall not exhibit a leakage rate in excess of 1 x 10-4 cc of air per second at a pressure differential of one atmosphere (see 4.5.9).
26、 3.5.6 Lanyard assembly. The lanyard assembly shall withstand a tensile load of 200 pounds minimum without separation of parts (see 4.5.10). 3.5.7 Radiographic examination. After completion of assembly, all cutters shall be radiographically examined for proper assembly and presence of components. An
27、y evidence of misassembly or missing parts shall be cause for rejection of that assembly (see 4.5.11). 3.5.8 Staking. 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 4.5.12). 3.5.9 Vibration
28、. The cutter shall withstand the vibration test without evidence of any disintegration of the primer, delay column, propellant, or damage of any component (see 4.5.13). 3.5.10 Non-withdrawal and withdrawal of cotter pin. The safety cotter pin shall not withdraw from the cutter when a pull force of 1
29、0 pounds minimum is applied to the pin. The pin shall be withdrawn when a pull force of up to 30 pounds maximum is applied to the pin (see 4.5.14). 3.6 Functional. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-82762B 5 3.6.1 Initiation. The
30、 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 force to release the firing pin shall be recorded. The pull force should be between 20 to 40 lbs force. 3.6.2 Cutting. The cutter s
31、hall completely sever two reefing lines when functioned (see 4.5.16). 3.6.3 Delay time. The delay time shall be as indicated in table I when tested in accordance with 4.5.16 (see 6.7.2). 3.6.4 Functioning over temperature range. The cutter shall function satisfactorily without failure (see 6.7.1) th
32、roughout the temperature range of 65 to 165F when tested in accordance with 4.5.16. TABLE I. Delay time. Delay time (seconds) Temperature (F) Minimum Maximum 65 70 165 2.44 2.77 2.34 6.91 5.33 5.00 3.6.5 Functioning at high setback. The cutter shall function satisfactorily, as evidenced by complete
33、severing of the reefing lines when a shock force of 700 g minimum is applied to the cutter (see 4.5.17). 3.6.6 Misfire. There shall be no misfires. 3.7 Workmanship. The workmanship requirements are as specified on the drawings, specifications, and the following. Workmanship and finish shall be in ac
34、cordance with the highest grade practice 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
35、 assembly, serviceability, functioning, 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
36、contracting officer. Surface coatings shall be continuous except for a few light scratches not exposing base material. 3.7.1 Metal defects. All components shall be free from cracks, splits, cold shuts, inclusions, incomplete or damaged threads, porosity, or any similar defect. 3.7.2 Burr. No part sh
37、all have a burr which might interfere with the assembly or function of the item or which might be injurious to personnel handling the item. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-82762B 6 3.7.3 Foreign matter. No part or assembly sha
38、ll contain chips, dirt, grease, rust, corrosion, or other foreign matter. 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.3) b. In process inspection (see 4.4.1.3) c. Lot acceptance inspecti
39、on (see 4.4.1.4) 4.2 Verification terms and definitions. Reference shall be made to ASQ A8402 to define the quality assurance terms used. 4.3 First article inspection. First article inspection shall be performed after award of contract and prior to production. After inspection and provisional accept
40、ance at 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 sa
41、me materials, 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 ins
42、pections shall be performed in accordance with the test conditions specified in MIL-STD-810. 4.3.1 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
43、lanyard 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
44、submitted to the functioning over temperature range after vibration. 4.3.2 Inspection routine. The first article sample shall be subjected to the inspections specified in table II. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-82762B 7 TABL
45、E II. First article inspection. Inspection Requirement para. Test method para. Number of samples to be inspected Visual and dimensional inspection of components Hardness Spring load Embrittlement of spring Corrosion resistance Leak test Lanyard assembly pull test Radiographic Staking Vibration Non-w
46、ithdrawal and withdrawal of cotter pin Firing pin release and non-release Functioning over temperature range Functioning at high setback 3.1 3.3 3.5.3 3.5.3 3.5.4 3.5.5 3.5.6 3.5.7 3.5.8 3.5.9 3.5.10 3.6.1 3.6.4 3.6.5 4.5.1 4.5.2 4.5.6 4.5.7 4.5.8 4.5.9 4.5.10 4.5.11 4.5.12 4.5.13 4.5.14 4.5.15 4.5.
47、16 4.5.17 10 components 5 components 5 5 3 components 10 10 28 28 12 21 28 28 7 4.3.3 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 sam
48、ple 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 correction action and submit a new sample or portion thereof. 4.4 Quality conformance inspection. 4.4.1 Inspection of product. Inspection of product
49、shall consist of In-Process inspection and Lot acceptance inspection, both done prior to delivery. 4.4.1.1 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. 4.4.1.2 Lot size. A lot shall consist of an identifiable group of assembled cutters as indicated in Table III. Provided by IHSNot for R
