1、flIL-I-bO21A 13 m 99999Ob 0507b7 7 m MIL-1-6028 1A 15 Januarv 1992 SUPERSEDING 17 May 1966 MIL-I-60281(MU) MILJTARY SPECIFICATION INITIATOR, CARTRIDGE ACTUATED, M28 ASSEMBLY mis specijcation is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This sp
2、ecification covers the requirements for the M28 Cartridge Actuated Initiator Assembly (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. The following specifications and standards form a part of this document to the extent specified herein. Unless otherw
3、ise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplements thereto, cited in the solicitation (see 6.2). SPECIFICATIONS MILITARY MIL-A-2550 Ammunition, General Specification For MIL-1-82871 In
4、itiator, Cartridge Actuated, Delay, M28 Remanufactured Metal Parts Assembly Initiator, Cartridge Actuated, M28 Metal Parts Assembly MIL-1-605 18 Beneficial comments (recommendations, additions, deletions) and any pertinent aa which may be of use in improving this document should be addressed to: Com
5、mander, Indian Head Division, Naval Surface Warfare Center, Sanardization Branch (Code 3730), 101 Strauss Avenue, Mian Head, MD 20640-5035, by using the Standardization Document Improvement Proposal OD Form 1426) appearing at the en of this document or by sening a letter. AMSC N/A FSC 1377 DISTRIBUT
6、ION STATEMENT A: Approved for public release; distribution is unlimited. Licensed by Information Handling Servicese- *5 NIL-I-bO281A 13 m 99999Ob 0507b 9 m MIL-I-60281A STANDARDS MILITARY MIL-STD-105 MIL-STD-109 MIL-sTD-453 Inspection, Radiographic MIL-STD-1168 Ammunition Lot Numbering MS28741 Sampl
7、ing Procedures And Tables For Inspection By Attributes Quality Assurance Terms And Definitions Hose Assembly, Detachable End Fitting, Medium Pressure (Unless otherwise indicated, copies of federal and military specifications and standards are available from Standardization Documents Order Desk, Bldg
8、. 4D, 700 Robbins Avenue, Philadelphia, PA 191 11-5094.) 2.1.2 Other Government documents, drawings, and publications. The following Government drawings form a part of this specification to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation (see 6
9、.2). DRAWINGS NAVAL ORDNANCE STATION (CAGE Codes 19200 and 19203) 8597230 Cartridge, Impulse, M91 Assembly 8830992 Box, Fiberboard (inner), Packing, Ammunition, For Initiator, Cartridge Actuated, M28 Box, Packing, Ammunition, For Initiator, Cartridge Actuated, M28 Initiator, Cartridge Actuated, M28
10、Assembly Box, Fiberboard (Outer), Alternative, Packing Ammunition, for Initiator, Cartridge Actuated, M28 8830993 10520555 9216932 U.S. Air Force TPO 00-724-9886 Initiator, Cartridge Actuated, M28 (Application for copies should be addressed to: Commanding Officer, Naval Ordnance Station, Data Contro
11、l Branch (Code 3720), Indian Head, MD 20640-5035.) 2 Licensed by Information Handling ServicesMIL-I-bO28LA 13 999990b 05078b9 O I MIL-1-6028 1A 2.2 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 prece
12、dence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Materials. All materials used in the manufacture of the initiators shall conform to the specifications referred to on the respective drawings unless
13、 specific approval in writing covering a departure therefrom has been obtained from the cognizant Navy design activity prior to manufacture. When alternate materials or methods of manufacture are specified on the drawings, the bidders selections shall be clearly stated in the proposal. 3.2 Component
14、s. 3.2.1 Primary components. For the purpose of this specification, the M91 impulse cartridge (Drawing 8597230) is defined as a primary component. Only primary components from a single lot shall be used in a production lot of initiators; however, one primary component production lot may be used in m
15、ore than one initiator production lot. 3.2.2 Component parts. All component parts shall meet the applicable requirements of MIL-I- 82871 or MIL-1-60518 prior to assembly. 3.3 Breakaway torque. The chamber and cap of each assembled initiator shall withstand a breakaway torque application of 400 inch-
16、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 five degrees in either direction (see 4.3.2). 3.5 Radiographic examination. Each initiator assembly shall be radiographically examined for defects (see
17、4.3.3). 3.6 Functional. 3.6.1 Ballistics. Initiators loaded with cartridges from one accepted lot and temperature conditioned shall perform within the pressure values and delay times (see 6.4.1) specified in table I. Pressure values shall be recorded at the end of 15 feet of aircraft hose, assembly
18、number MS28741-4, and a pressure chamber with a volume of 1 cubic inch, 3.6.1.1 Initiation. The initiator shall be fired by a source delivering an output pressure of 700 +25, -0 pounds per square inch gage (psig) at 70 f 5F. 3.6.2 Misfires. There shall be no misfires. 3.6.3 Mechanical failures. The
19、initiator shall function without meManical failure (see 6.4.2). 3 Licensed by Information Handling ServicesMIL-I-bO281A 13 W 9997906 0507870 7 W MIL-I-60281A TABLE I, Pressure values. Temperature (OF) Pressure (psig) Ignition delay Minimum Maximum milliseconds, max -60 to -70 . 500 1425 65 65 to 15
20、600 1550 65 195 to 205 700 1700 65 3.7 Workmanship. Initiators shall be free of cracks, splits, or other defects which might prevent proper mating with connecting parts or proper functioning of the device, 3.7.1 Metal defects. All components shall be free from cracks, splits, cold shuts, inclusions,
21、 porosity, or any similar defect. 3.7.2 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, 3.7.3 Foreign matter. No part or assembly shall contain chips, dirt, grease, rust, corrosion, or other f
22、oreign matter. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified herein. Except as otherwise specified
23、 in the contract or purchase order, the contractor may 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 this specifi
24、cation where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements (see 6.2). 4.1.1 Responsibility for compliance. All items shall meet all requirements of sections 3 and 5. The inspection set forth in this specification shall become a part of the c
25、ontractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the con
26、tract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements; however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to acceptance of defective mater
27、ial. 4.1.2 Quality assurance terms and definitions. Reference shall be made to MIL-STD-109 to define the quality assurance terms used. 4.1.3 Inspections, Inspections shall be in accordance with MIL-A-2550 and MIL-STD-453. 4 Licensed by Information Handling Services4.2.1 Lot. 4.2.1.1 Submission of pr
28、oduct. Unless otherwise specified by the contracting activity, formation, and identification of lots shall be in accordance with MIL-STD-105. 4.2.1.2 Size of lot. The production lot size shall be as specified in the contract (see 6.2). 4.2.2 Examination. One hundred percent examination shall be perf
29、ormed for all critical defects. Examination for major and minor defects shall be performed in accordance with the classification of defects. Four power (4x) magnification may be used for inspection of such defects as burr and foreign matter. When compliance with the applicable requirement is in doub
30、t as a result of visual examination, the characteristic shall be measured or gaged to determine acceptability. All nonconforming material shall be rejected. MIL-I-60281A 4.2 Inspection provisions. J.“ -3 * NIL-I-602LA 33 9999906 O507873 9 W 4.2.2.1 Cartridge, Drawing 8597230, covering a detail of Dr
31、awing 10520555. Characteristics Defect Method of Inspection Critical 1 Mixed cartridges Major Metal defective 101 Foreign matter present Visual Visual Visual Minor 201 Case scratched, wrinkled, bulged, or dented Visual 202 Varnish missing or inadequate Visual 4.2.2.2 Assembly, Drawing 10520555, less
32、 all drawings except Drawings 10520557,10520474, 10520475,10520496, and MS29513-9. Critical 1 Firing pin protrusion 2 3 Shear pin not engaged in firing pin Striker hole in initiator cap obstructed Major 101 O-ring not lubricated 102 Burr 103 Foreign matter Gage Gage Visual Visual Visual Visual Minor
33、 None defined 5 Licensed by Information Handling ServicesMIL-I-60281A 4.2.2.3 Assembly, Drawing 10520555, less all drawings except Drawings 10520407,10520414, and 8597230. Critical 1 Cartridge not properly seated 2 Filter missing or insecure 3 Nylon patch missing or improperly applied Major 10 1 Bur
34、r 102 Foreign matter Minor None defined 4.2.2.4 Assembly, Drawing 1052 Critical Cartridge face not seated against base of firing pin housing Any part missing Improper assembly Marking missing, incorrect, or illegible Major 101 102 Burr 103 Foreign matter Set screw missing or insecure Minor 201 202 2
35、03 Thread sealing compound missing from setscrews Shipping cap or plug missing Protective finish inadequate or defective 4.2.2.5 Box, Fiberboard (Inner), Ammunition, Drawing 8830992. Critical None defined Major None defined Minor 201 Contents loose 202 Box damaged 203 204 205 Sealing strip broken or
36、 missing Marking missing, incorrect, or illegible Cut, damaged, or improperly sealed bag Visual Visual Visual Visual Visual VisualK-ray visual fi-ray VisualK-ray Visual Visual Visuai Visual Visual Visual Visual Manual Visual Visual Visual Visual 6 _. . .L Licensed by Information Handling ServicesMIL
37、-I-b028LA 13 = 999990b O507873 2 W I MIL-1-6028 1A 4.2.2.6 Box, Ammunition, Packing, Drawing 8830993. Critical None defined Major None defined Minor 20 1 202 203 204 205 206 Contents loose Manual Strapping missing, loose, broken, or improperly engaged Contents of box exposed Visual Box damaged Visua
38、l Marking missing, incorrect, or illegible Visual Number of units incorrect Visual Visual/manual 4.2.2.7 Box, Fiberboard (Outer), Alternative, Ammunition, Packing, Drawing 9216932. Critical None defined Major 201 Contents loose 202 Carton broken or damaged 203 204 205 Tape incomplete Number of units
39、 contained incorrect Marking missing, incorrect, or illegible Manuallvisual Visual Visual Visual Visual 4.2.3 Inspection testing. The following tests shall be performed in accordance with 4.3. 4.2.3.1 Breakaway torque. Each assembly shall be subjected to the breakaway torque test of the threaded joi
40、nt between the cap and the chamber. Failure of any assembly to comply with 3.3 shall be cause for rejection of the assembly. 4.2.3.2 Residual magnetism. Each initiator shall be subjected to the test for excessive residual magnetism as specified in 4.3.2. Failure of any initiator to comply with 3.4 s
41、hall be cause for rejection of the initiator. 4.2.3.3 Functional tests. The following tests shall be performed by the Government. 4.2.3.3.1 Ballistics. Twenty-one units shall be tested to determine compliance with 3.6. The units shall be temperature conditioned as provided in table II and 4.3.4.2. F
42、ailure of any unit to comply with 3.6 shall be cause for rejection of the lot. 7 Licensed by Information Handling Services. ? -. MIL-I-bO281A 13 = 999990b 0507874 4 MIL-I-60281A TABLE II. Conditioning. temperature. II -60 to -70 I 7 65 to 75 7 195 to 205 7 4.2.3.3.2 Retest. There shall be no retests
43、. 4.2.3.3.3 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. 4.3 Test methods and procedures. 4.3.1 Breakaway torque. The torque wrench set as specified in 3.3 shall be used i
44、n conjunction with a fixture to determine the adequacy of the joints. The chamber shall be secured in an air vise, and the torque shall be applied to the cap. 4.3.2 Residual magnetism, The assembly shall be tested for excessive residual magnetism using an approved compass in an area free of local ma
45、gnetic effects by placing the assembly 5 inches from the end at the same height as the compass, in the north-south horizontal position (cap end at south) with the compass set in an east-west heading. The assembly shall be moved at a speed no greater than 10 feet per minute past the compass for its e
46、ntire 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 each 90 degree rotation of the assembly for four full passes. 4.3.3 Radiographic examination. All assembled initiators shall be radiog
47、raphically examined in accordance with MIL-STD-453, with the exception that an initiator assembly will be used for the penetrameter. Any observable imperfections in components or assembly shall be cause for rejection. The initiators shall be positioned for the most revealing exposure, with the long
48、axis of each assembly perpendicular to the rays of the X-ray machine. All initiators shall be identified with serial numbers prior to X-ray examination. The serial numbers shall be in consecutive order beginning with the number O01 in each production lot. Any missing numbers are to be identified on
49、the X-rays. The initiators shall be arranged on trays or boards in consecutive numerical order, and each radiograph shall carry a permanent identification of the units displayed thereon. The radiographic plate identification shall include item nomenclature, the complete lot number, the span of serial numbers displayed, and the contract number. The radiographs of the entire production lot shall accompany the ballistic sample to the activity conducting the production lot acceptance test. Defective initiators found during X-ray review are to be marked on the X-ray prior to shipm
