1、INCH POUND MIL-DTL-60283C 16 December 2011 SUPERSEDING MIL-DTL-60283B 14 September 2004 DETAIL SPECIFICATION INITIATOR, CARTRIDGE ACTUATED, M27 ASSEMBLY 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 minimum requirements for the M27 Cartridge Actuated Initiator Assembly (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 specific
3、ation 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 they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this specification, whether or not they a
4、re listed. 2.2 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 co
5、ntract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-A-2550 Ammunition, General Specification for MIL-DTL-60517 Initiator, Cartridge Actuated, M 27 Metal Parts Assembly MIL-DTL-82763 Initiator, Cartridge Actuated, M27, Remanufactured Metal Parts Assembly Comments, suggestions, or questions on this docum
6、ent should be addressed to Commander, Indian Head Division, Naval Surface Warfare Center, Technical 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
7、 address information using the ASSIST Online database at https:/assist.daps.dla.mil/. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. AMSC N/A FSC 1377 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-60283C 2
8、(Copies of these documents are available online at https:/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, drawi
9、ngs, and publications 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. DRAWINGS NAVAL ORDNANCE STATION, INDIAN HEAD (GAGE CODE 19200 and 19203) 8597230 Cartridge, Impulse, M91 Assem
10、bly DL10520550 Initiator, Cartridge Actuated, M27, Assembly (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 documents form a
11、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) ASTM E1742/E1742M Standard Practice for Radiographic Examination (Copies of this document
12、 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 SOCIETY FOR QUALITY ASQ Q9000 Quality
13、Management Systems Fundamentals and Volcabulary ASQ Z1.4 Sampling Procedures and Tables for Inspection by Attributes (Application for copies should be addressed to the American Society for Quality Control, PO Box 3005, 611 E. Wisconsin Ave., Milwaukee, WI 53201-4606.) 2.4 Order of precedence. In the
14、 event of a conflict between the text of this document and the references cited herein (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
15、. REQUIREMENTS 3.1 Materials. All materials used in the manufacture of the initiators shall conform strictly to the specifications referred to on the respective drawings unless specific approval in writing covering a departure there from has been obtained from the cognizant Navy design activity prio
16、r to manufacture. When alternate materials or methods of manufacture are specified on the drawings, the bidders selections shall be clearly stated in the proposal. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-60283C 33.2 Primary components
17、. For the purpose of this specification, the M91 cartridge (Drawing 8597230) is defined as a primary component. Only primary components from a single lot shall be used in the production lot of initiators. One primary component production lot may be used in more than one initiator production lot. 3.3
18、 Breakaway torque. The chamber and cap of each assembled initiator shall withstand a breakaway torque application of 400 inch pounds without loosening or deformation (see 4.3.1). 3.4 Residual magnetism. The initiator shall not deflect the indicator of the compass more than 5 degrees in either direct
19、ion using procedures in 4.3.2. 3.5 Firing pin release. The firing pin of the assembled initiator, less safety pin and cartridge, shall release from the cocked position when the application of an axial load of 15 to 30 pounds has withdrawn the initiator pin 0.370 inch, minimum, and 0.425 inch, maximu
20、m (see 4.3.3). 3.6 Initiator pin security. Application of an axial load of 200 to 220 pounds to the initiator pin of the assembled initiator shall not withdraw the initiator pin past the safety pin. Load application shall cause no permanent deformation of the safety pin (see 4.3.4). 3.7 Functional.
21、(See 4.3.5) 3.7.1 Ballistics. Initiators loaded with cartridges from one accepted lot and temperature conditioned shall perform within the pressure values and ignition delay time (see 6.6.2) specified in table I. Pressure values shall be recorded at the end of 15 feet of aircraft hose, MS28741-4, an
22、d a pressure chamber with a volume of 1 cubic inch. TABLE I. Pressure values. Temperature (F) Pressure (psi) Ignition delay time Max (ms) -60 to -75 700 to 1425 65 65 to 75 800 to 1550 65 195 to 205 900 to 1700 65 3.7.2 Misfires. There shall be no misfires. 3.7.3 Mechanical failures. The initiator s
23、hall function without mechanical failure (see 6.6.1). 3.8 Workmanship. Initiators shall be free of cracks, splits, incomplete or damaged threads on inlet and outlet ends, or other defects which might prevent proper mating with connecting parts or proper functioning of the device. 3.8.1 Metal defects
24、. All components shall be free from cracks, splits, cold shuts, inclusions, porosity, or any similar defects. 3.8.2 Burr. No part shall have a burr which might interfere with the assembly or function of the item or which might be injurious to personnel handling the item. 3.8.3 Foreign matter. No par
25、t or assembly shall contain chips, dirt, grease, rust, corrosion, or other foreign matter. 3.9 Radiographic examination. Each initiator assembly shall be radiographically examined for defects as specified in 4.4. Provided by IHSNot for ResaleNo reproduction or networking permitted without license fr
26、om IHS-,-,-MIL-DTL-60283C 43.10 Component parts. All component parts shall meet the requirements of MIL-DTL-60517 or MIL-DTL-82763. 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. Conformation inspection. 4.1.1 Quality ass
27、urance terms and definitions. Reference shall be made to ASQ Q9000 to define the quality assurance terms used. 4.1.2 Inspection. Inspection shall be in accordance with MIL-A-2550 and ASTM E1742/E1742M. 4.2 Inspection provisions. 4.2.1 Lot. 4.2.1.1 Submission of product. Unless otherwise specified by
28、 the contracting officer, formation of lots and presentation of lots shall be in accordance with the “Submission of Product” provision of ASQ Z1.4. 4.2.1.2 Size of lot. A lot shall be of an identifiable group of assembled initiators containing metal parts assemblies produced by a homogeneous process
29、 and loaded with one lot of accepted cartridges. 4.2.2 Examination. One hundred percent examination shall be performed for all critical defects. Examination for major and minor defects shall be performed on a defect basis in accordance with the classification of defects. Four power (4X) magnificatio
30、n may be used for inspection of such defects as burr and foreign matter. When compliance with the applicable requirement is in doubt as a result of visual examination, the characteristics shall be measured or gaged to determine acceptability. All nonconforming material shall be rejected 4.2.2.1 Cart
31、ridge, Impulse, M91, Drawing 8597230, covering a detail of Drawing 10520550. Characteristic Defect Method of Inspection Critical 1 Mixed cartridges Visual 2 Metal defective Visual3 Marking missing, incorrect or illegible Visual Major 101 Foreign matter present Visual Minor 201 Case scratched, wrinkl
32、ed, bulged, or dented Visual 202 Varnish missing or inadequate Visual 4.2.2.2 Assembly, Drawing 10520550, less all Drawings except 10520410, 10520411, and MS19060-3. Critical 1 Firing pin protrusion Gage Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
33、,-MIL-DTL-60283C 52 Steel ball, missing Gage 3 Striker hole in firing pin housing obstructed Visual Major 101 Burr Visual 102 Foreign matter present Visual Minor None defined 4.2.2.3 Assembly, Drawing 10520550, less Drawing 8597230, 10520407, 10520496, 10520414, and NAS 832-4. Critical 1 Firing pin
34、not cocked Manual/Visual 2 Any part missing Visual 3 Improper assembly Visual Major 101 Safety pin loose or deformed Visual 102 Burr Visual 103 Foreign matter present Visual Minor None defined 4.2.2.4 Assembly, Drawing 10520550, less all Drawings except 10520407, 10520414, 8597230. Critical 1 Cartri
35、dges not properly seated Visual 2 Filter missing or insecure Visual 3 Nylon patch missing or improperly applied Visual Major 101 Burr Visual 102 Foreign matter present Visual Minor None defined 4.2.2.5 Assembly Drawing 10520550. Critical 1 Cartridge face not seated against base of firing pin housing
36、 X-ray 2 Any part missing except as otherwise classified Visual/X-ray 3 Improper assembly Visual/X-ray 4 Marking missing, incorrect, or illegible Visual Major 101 Setscrew, missing or insecure Visual 102 Burr Visual103 Foreign matter present Visual Minor 201 Thread sealing compound, missing from set
37、screws Visual 202 Protective cap missing Visual 203 Protective finish, inadequate or defective Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-60283C 64.2.3 Inspection testing. The following tests shall be performed in accordance with the pro
38、vision of 4.3. 4.2.3.1 Breakaway torque. Each assembly shall be subjected to the breakaway torque test of the threaded joint between the cap and the chamber. Failure of any assembly to comply with the requirements of 3.3 shall be cause for rejection of the assembly. 4.2.3.2 Residual magnetism. Each
39、initiator shall be subjected to the test for excessive residual magnetism as specified in 4.3.2. Failure on any initiator to comply with the requirement of 3.4 shall be cause for rejection. 4.2.3.3 Firing pin release. The initiator pin of each subassembly, consisting of all parts except the safety p
40、in, cartridge and chamber, shall be subjected to the firing-pin release test. Failure of any subassembly to comply with the requirements of 3.5 shall be cause for rejection of the subassembly. 4.2.3.4 Initiator pin security. The initiator pin of each subassembly, consisting of all parts except the c
41、hamber and cartridge, shall be subjected to the initiator-pin security test. Failure of any subassembly to comply with the requirements of 3.6 shall be cause for rejection of the subassembly 4.2.3.5 Functional tests. The following tests shall be performed by the Government. 4.2.3.5.1 Ballistics. Twe
42、nty-one units shall be tested to determine compliance with the requirements of 3.7. The units shall be temperature conditioned as provided in table II and 4.3.5.2. Failure of any unit to comply with the requirements of 3.7 shall be cause for rejection of the lot. 4.2.3.5.2 Retest. There shall be no
43、retest. 4.2.3.5.3 Test failure. If a test failure is attributable to an assignable cause, excluding the test initiator, the original test results shall be discarded and that test reconducted. Table II. Conditioning temperature. Temperature (F) Sample Size - 60 to - 70 7 65 to 75 7 195 to 205 7 4.3 T
44、est methods and procedures. 4.3.1 Breakaway torque. A torque wrench set at the torque requirement specified in 3.3 shall be used in conjunction with a fixture to determine the adequacy of the joints. The chamber shall be secured in a suitable vise and the torque shall be applied to the cap. 4.3.2 Re
45、sidual magnetism. The assembly shall be tested for excessive residual magnetism using an approved compass in an area free of local magnetic effects by placing the assembly 5 inches from the end and at the same height as the compass in a north-south horizontal position (cap end at south) with the com
46、pass set in the east-west heading. The assembly shall be moved at a speed no greater than 10 feet per minute past the compass for its entire length, rotated 90 degrees in the horizontal position about its longitudinal axis, and moved slowly back past the compass. This procedure shall be repeated for
47、 each 90 degrees rotation of the assembly for four full passes. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-60283C 74.3.3 Firing pin release. The subassembly shall be secured in the fixture. A pull shall be applied to the initiator pin in
48、 the longitudinal direction, in conjunction with the fixture, which registers the amount of pull. 4.3.4 Initiator pin security. The subassembly shall be secured in the fixture with the safety pin in place. A pull shall be applied to the initiator pin in the longitudinal direction in conjunction with
49、 a fixture, which registers the amount of pull. The test shall be performed with the safety pin in both positions. 4.3.5 Functional. 4.3.5.1 Ballistics. The test sample shall be rigidly supported in the fixture. The sample shall be tested within 5 minutes after removal from the conditioning chamber. When this time is exceeded, the sample unit shall be reconditioned in accordance with 4.3.5.2.
