1、MIL-S-60280 (MU) 14 March 1966 MILITARY SPECIFICATION SCALES, GRAPHICAL FIRING: FAN TYPE, WITH EQUIPMENT (FOR 81-MM AND 4.2 IN. MORTARS) 1. SCOPE 1.1 used for determining and plotting data pertinent to indirect firing of mortars. Except where otherwise indicated, all statements pertinent to the grap
2、hical firing scales within this specification are applicable to both firing scales. equipment related to the scales: 10527367; Case (Pin): 8578039; and Pin Assembly: 8578028. (See 6.L) This specification covers two fan-type graphical firing scales The specification also covers the following items of
3、 Case, Scale, Graphical Firing, Fan Type: 2. APPLICABLE DOCUMENTS 2.1 The following documents, of the issue in effect on the date of invitation for bids or request for proposals, form a part of this specifi- cation to the extent specified herein. SPECIFICATIONS Militar y MIL-F-13926 MIL-P-14232 MIL-
4、1-45607 Fire Control Materiel: General Speci- fication Governing the Manufacture and Inspection of Parts, Equipment, and Tools for Ord- nance Materiel, Packaging of Inspection Equipment, Supply and Main- tenance of STANDARDS Mi 1 it ary MIL-STD-105 MIL-STD-109 Sampling Procedures and Tables for Qual
5、ity Assurance Terms and Defini- Inspection by Attributes tions DRAWINGS U.S. Army, Frankford Arsenal A10527360 Scale, Graphical Firing: Fan Type (for 81-rmn mortar), W/E Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DRAWINGS (Contd) A10527361 Scale
6、, Graphical Firing: Fan Type B8 5 7 8028 Pin Assembly: 8578028 C8578039 Case (pin): 8578039 F8578050 Scale, Graphical Firing: Fan Type F85 7805 1 Scale, Graphical Firing: Fan Type F10527367 Case, Scale, Graphical Firing, Fan (for 4.2 in. mortar), WIE (for 81-mm mortar) (for 4.2 in. mortar) Type: 105
7、27367 PACKAGING DATA SHEETS MIL-P-l4232/P10527360 MIL-P-l4232/P10527361 Packaging of Scale, Graphical Firing: Packaging of Scale, Graphical Firing: Fan Type (for 81-rmn mortar), WIE Fan Type (for 4.2 in, mortar), WIE (Copies of specifications, standards, drawings, and packaging data sheets required
8、by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the con- tracting officer.) 3 * REQUIREMENTS 3.1 Fabrication of Graphical Firinn Scales, Fan Type, WIE. 3.1.1 Graphical Firing Scale, Fan Type (for 81-mm mortar), WIE.- anc
9、e with Drawing A10527360 and all drawings pertaining thereto. 3.1.2 Graphical Firing Scale, Fan Type (for 4.2 in. mortar), WIE.- This firing scale, complete with equipment, shall be manufactured in accordance with Drawing A10527361 and all drawings pertaining thereto. 3.2 First article testing.- Req
10、uirements for the submission of first article samples of the graphical firing scale and items of equip- ment by the contractor for testing shall be as specified in the contract. 3.3 General specification,- The contractor shall be responsible for adherence to the following requirements of MIL-F-13926
11、: (a) Dimensions and tolerances (b) Inorganic protective surface finishes (c) Part identification and marking (d) Workmanship 3.4 Graphical firing scales, Fan Type. 3.4.1 Fabrication. ,- - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-S-bO2BO
12、12 R 999990b 0337325 a MIL-S-60280 (MU) 3.4.1.1 Graphical Firinn Scale, Fan Tvpe (for 81-m mortar).- The firing scale shall be manufactured in accordance with Drawing F8578050 and all drawings pertaining thereto. 3.4.1.2 Graphical Firinn Scale, Fan Type (for 4,2 in. mortar).- The firing scale shall
13、be manufactured in accordance with Drawing F8578051 and all drawings pertaining thereto. 3.4.2 Environmental service conditions. 3.4.2.1 Storape temperatures.- The graphical firing scale shall show no evidence of damage OK physical defects after having been exposed to and thermally stabilized at amb
14、ient temperatures of -80 and +160 Fahrenheit (F) , 3.4.2.2 Standard ambient temperature.- Subsequent to the require- ments of 3.4.2.1 the graphical firing scale shall meet the requirements of 3.4.3 to 3.4.6 inclusive at a standard ambient temperature between +600 and +90F. 3.4.2.3 Extreme operating
15、temperatures.- The graphical firing scale shall meet the requirements of 3.4.6 while exposed to and thermally stabi- lized at ambient temperatures of -40 and +15OoF. 3.4.3 Surface ciua1itv.- Surfaces of the graphical firing scale shall be free from stains and other imperfections. 3.4.3.1 Cursor.- Th
16、e top frosted surface of the cursor shall be capable of accepting clear and legible markings from a lead pencil of 2H hardness, evidence of permanent marks, smudges, or smears. Upon erasure with a comercial pencil eraser, there shall be no 3.4.4 Inscribed data.- Graduation lines, letters, numerals,
17、and other markings on the scales and the lines on the cursor shall be sharp, evenly colored, and without skips or breaks. Letters and numerals shall not touch each other or any line of any scale. 3.4.5 Accuracy.- Graduation lines shall be accurately located in accordance with the dimensions and tole
18、rances shown on pertinent drawings. 3.4.6 Operability.- The fan scale, ballistic scales, and”cursor shall assemble freely, and the cursor shall operate smoothly with the ballistic scales while the graphical firing scale is exposed to and ther- mally stabilized at the standard ambient temperature of
19、3.4,2.2 and the extreme operating temperatures of 3.4.2.3. 3.5 Case, Scale,Graphical Firing, Fan Type: 10527367- The case shall be manufactured in accordance with Drawing F10527367 and all draw- ings pertaining thereto and requirements noted thereon. 3.6 Case (pin): 8578039.- The case shall be manuf
20、actured in accordance with Drawing C8578039 and requirements noted thereon. 3 - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-60280 12 M 977790b 033732b T W MIL-S-60280 (MU) 3.7 Pin Assembly - 8578028.- The pin assembly shall be manufactured
21、in accordance with Drawing B8578028 and all drawings pertaining thereto. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection.- Unless otherwise specified in the contract or purchase order, the supplier is responsible for the per- formance of all inspection requirements as specified her
22、ein. Except as otherwise specified, the supplier may utilize his own facilities or any commercial laboratory acceptable to the Government. The Government re- serves the right to perform any of the inspections set forth in the speci- fication where such inspections are deemed necessary to assure supp
23、lies and services conform to prescribed requirements. 4.1.1 General provisions.- The component and subassembly inspection requirements of MIL-F-13926 form a part of the Quality Assurance Provisions of this specification, in MIL-STD-109. Definitions of inspection terms shall be as listed 4.2 First ar
24、ticle testing.- When the contract specifies testing of preproduction or initial production samples, the following paragraphs shall apply as applicable. 4.2.1 Preproduction test.- Preproduction test samples shall be sub- mitted in accordance with contract requirements. Unless otherwise speci- fied in
25、 the contract, two preproduction samples shall be submitted to the procuring agency for approval of design and construction features. Pre- production samples shall meet all inspection provisions of 4.3, 4.4, and 4.6 as well as any additional tests that may be specified in the contract. 4.2.2 Initial
26、 production test.- Initial production test samples shall be submitted in accordance with contract requirements. wise specified in the contract, samples shall be the first two production units and shall have been manufactured using the same materials, processes and procedures as will be used in regul
27、ar production. Initial production testing shall be in accordance with 4.3, 4.4, and 4.6 and shall be wit- nessed by the Government representative for all examinations and tests. The Government reserves the right to conduct any or all examinations or tests as may be deemed necessary. Unless other- 4.
28、2.3 First article disapproval.- Failure of any one of a first article sample submitted shall be cause for disapproval by the Government and subsequent action as required by the contract clauses applicable to first article testing. 4.3 Inspection provisions, 4.3.1 Submission of product.- Unless other
29、wise specified by the Contracting Officer, inspection lot size, lot formation and presentation of lots shall be in accordance with “Submission of Product“ provisions of MIL-STD-105. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-bO280 12 977
30、9906 0337327 L MIL-S-60280 (MU) 4.3.2 Examination and tests.- Components and subassemblies shall be inspected in accordance with the inspection provisions contained in MIL-F-13926. Examinations and tests related to Section 3 herein shall be performed on a single defect (individual characteristic) ba
31、sis in accord- ance with MIL-STD-105, and the sampling plans specified in Tables I, II, and III herein. Examinations and tests for Packaging, Packing, and Mark- ing &al be in accordance with MLL=P-14232 and Section 5 herein. The tabulated classification of defects shall constitute the minimum inspec
32、- tion to he performed by the supplier prior to Government acceptance or rejection by lot. TABLE I - CLASSIFICATION OF DEFECTS - CLASS REQUIREMENT TEST PROCEDURE CRITICAL : NONE MAJOR: AQL 1.0% Defective 101. Surface quality 3.4.3 . 4.6.4 102. Cursor 3.4.3.1 4.6.5 103. Inscribed data 3.4.4 4.6.6 104
33、. Accuracy 3.4.5 4.6.7 105. Operability 3.4.6 4.6.8 MINOR: NONE NOTE: The tests in Table I shall be conducted at temperatures be- tween plus 600 and 90F. 4.3.3 Acceptance and reiecti0n.l Rejected lots shall be screened for all defective characteristics. units and resubmittance of rejected lots shall
34、 be in accordance with “Accep- tance and Rejection“ as specified in MIL-STD-105. Removal or correction of defective 4,4 Special sampling. 4.4.1 General.- One Graphical Firing Scale shall be selected at random as a special sampling from each 100 produced. meet the requirements and tests in Table II.
35、TABLE II The sample shall CHARACTERISTIC 301. Fabrication 302. General specification REQUIREMENT TEST PROCEDURE 3.1, 3.4, 3.5, Applicable 3.6, 3.7 drawings- visual 3.3 MIL-F-13926 - visual 4.4.2 Environmental.- Three Graphical Firing Scales shall be se- lected at random as samples from each 50 produ
36、ced, or from each months production, whichever occurs first. ments and tests in Table I and shall then meet the requirements and tests in Table III. Each sample shall have met the require- 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-bO280
37、 12 0b 0337328 3 m _ABLE III CHARACTERISTIC REQUIREMENT TEST PROCEDURE 304, Extreme operating temperatures 3.4.2.3 - 4.6.2 305, Storage temperatures 3.4.2.1 4.6.3 4.4.3 Failure of sample.- Should any one item of a special sampling fail to meet the specified test requirements, acceptance of the produ
38、ct shall be suspended by the Government until necessary corrections have been made by the contractor and resubmitted samples have been approved (see 4.3.3). 4.5 Inspection equipment.- Except as otherwise provided for by the contract, the contractor shall supply and maintain inspection equip- ment in
39、 accordance with the applicable requirements of MIL-1-45607. 4.5.1 Government furnished inspection equipment.- Where the con- tract provides for Government furnished test equipment, supply and main- tenance of test equipment shall be in accordance with the applicable re- quirements specified in MIL-
40、1-45607, 4.5.2 Contractor furnished inspection equipment.- The contractor shall design and supply inspection equipment compatible with the “Test Methods and Procedures“ specified in 4.6 of this specification and with the component inspection procedures specified in “Examination“ and “Test facilities
41、“ requirements of MIL-F-13926. Since tolerance of test equip- ment is normally considered to be within 10% of the product tolerance for which it is intended, this inherent error in the test equipment de- sign must be considered as part of the prescribed product tolerance limit. Thus, concept, constr
42、uction, materials, dimensions and tolerances used in the design of test equipment shall be so selected and controlled as to insure that the test equipment will reliably indicate acceptability of a product which does not exceed 90% of the prescribed tolerance limit, and permit positive rejection when
43、 non-conforming. such as to facilitate routine calibration o test equipment. Construction shall be 4.6 Test Methods and Procedures. 4.6.1 Fabrication.- The graphical firing scale and equipment as specified in the contract or purchase order shall be subjected to a visual, tactile, and dimensional ins
44、pection for conformance to the applicable drawings. sional inspection. form to the applicable requirements of 3.1, 3.4, 3.5, 3.6, and 3.7. Standard measuring equipment shall be used in performing dimen- . The graphical firing scale and equipment shall con- 4.6.2 Op erating temperatures.- The test sh
45、all be 5n accordance with the “Test Facilities“ requirements of Specification MIL-F-13926 and the conditions of 3.4.2.3. While thermally stabilized at -40 and +150F, respectively, the assembly and operability of the fan scale, ballistic scales, and cursors shall be conducted by means of a visual and
46、 tactile examination. to the requirements of 3.4.6. The components of the graphical firing scale shall conform 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-+-. MIL-S-60280 12 7777906 0337327 5 m MIL-S-60280 (Mu) 4.6.3 Storage temperatures.- Test
47、 equipment shall be in accordance with the “Test Facilities“ requirements of Specification MIL-F-13926 and.the conditions in 3.4.2.1. During temperature cycling, the fan scale, ballistic scales and cursor shall lay on a flat surface in the test chamber. The flat surface shall be capable of supportin
48、g the entire length and width of-each component. Upon return to standard ambient temperature, the fan scale, ballistic evidence of damage or physical defects such as color change, separations, bubbles, tears and cracks. The graphical firing scale shall conform to the requirements of 3.4.2.1. The gra
49、phical firing scale shall then be subjected to the tests in 4.6.4 through 4.6.8inclusive, and shall conform to the requirements specified. (that comprise a graphical firing scale) . scales, and cursor shall be subjected to a visual examination for 4.6.4 Surface quality.- The surface quality of the graphical firing scale shall be visually inspected with the aid of a magnifier of at least 3 power (3X). shall conform to the requirements of 3.4.3.
