1、4, 1 L c MIL-P-503b3 12 7777906 0326707 O -, i c MIL- P- 503Mu) 9 October 1969 MILITARY SPECIFICATION PLOTTING BOARD, FLASH RANGING, FIE CONTROL: M18 - _. -1. SCOPE 1.1 This specification covers Flash Ranging Plotting Board M18 which is used to plot the location of enemy batteries (see 6.1). 2. APPL
2、ICABLE DCUMENTS *. 2.1 The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of this specifica- tion to the extent specified herein. SPECIFICATIONS Mil it ary MIL-F-13926 Fire Control Materiel; General Specifica- tion Governing the Manufa
3、cture and Inspec- tion of Parts, Equipment and Tools for Army Materiel, Packaging and Packing of Inspection Equipment, Supply and Maintenance of MIL-P-14232 MIL- 1-45607 STANDARDS Military MIL-STD- 105 Sampling Procedures and Tables for MIL- STD-109 Inspection by Attributes Quality Assurance Terms a
4、nd Definitions DRAWINGS U.S. Army, Frankford Arsenal F8567955 Plotting Board, Flash Ranging, Fire Control: M18 FSC 1220 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - _ - .- - -_I_-_ .- -I-_ - i“- MIL-P-50363 LE 9999906 0326708 2 MIL-P- 50363 (NU
5、) PACKAGING DATA SKEET 11728 160 Packaging of Plotting Board; Flash Ranging, Fire Control: M18 W/Equipment. (Copies of specifications, standards, drawings, and packaging data sheets required by suppliers in connection with specific procurement functions should be obtained from the procuring activity
6、 or as directed by the contracting officer.) 3. REQUIREMENTS 3.1 Materials.- Materials shall be in accordance with drawings, . material specifications, and general specifications forming a part of this specification. 3.2 Fabrication.- The plotting board shall be manufactured in accordance with Drawi
7、ng F8567955 and the respective drawings pertaining thereto. 3.3 General specification.- The contractor shall be responsible to, and compliance with, the following requirements of for adherence MIL-F-13926. Order of precedence Dimensions and tolerances Inorganic protective surface finishes Part ident
8、ification and marking Workmans hip 3.4 Environmental. 3.4.1 Storage temperatures.- The plotting boards shall show no evidence of physical failure and shall meet all performance requirements of this specification at a standard ambient temperature of between 60“ and 90F. after having been exposed to a
9、nd thermally stabilized at ambient temperatures of -80“ and +160F. 3.4.2 Operating temperatures.- The plotting boards shall meet the applicable requirements of 3.8 while exposed to and thermally stabilized at- ambient temperatures of -40“ and S150F. 3.5 Plotting scale flatness.- With the plotting bo
10、ard arranged for two (2) man operation, the plotting scale of the drafting machine shall lie flat on any part of the disk from the “7“ graduation to the “15“ graduation within .Ci15 inch when the “Il“ graduation is at the center of the board. The ends of the scale shall lie flat within 0.025 inch. 2
11、 -y. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-50363 Ir2 9799706 0326707 . - MIL-P-50363 (MU) 3.6 Parallelism.- When alined with the fiducial edge of the plotting scale, the Grid lines of the plotting disk shall be parallel to the fiducia
12、l edge of the scale within 0015 inch throughout their entire length with the azimuth scale and vernier reading O f 0.1 mil and 1600 f 0.1 mil. 3.7 A&uracy.- Lines drawn forming a centrally located square with sides measuring 15,000 f 15 meters shall have both diagonals 21,213 f 21 meters. 3.8 Operab
13、ility. 3.8.1 Torque.- The torque required to rotate the slow motion knob shall not exceed 9 pound inches at a standard ambient temperature of between 60“ and 90F. and 12 pound inches at the extreme operating temperatures specified in 3.4.2. 3.8.2 Plotting board table.- With the brake lever pressed a
14、nd held, it shall be possible to rotate the plotting board table through its entire travel without binding, With the brake lever released, the braking mechanism shall hold the table in a clamped position but allow fine adjustment with the slow motion knob. 3.8.3 Braking force.- With the brake lever
15、in its normal position (release) the table shall not move with respect to the vernier scale when a tangential force of 10 pounds is applied at the outer edge of the clamp- ing surface. 3.8.4 Drafting machine.- With the plotting board arranged in both the two man and one man operation mode, there sha
16、ll be no binding in any part of the drafting machine when the plotting scale of the machine is moved back and forth over the entire plotting disk. 3.8.5 Plotting disk surface.- The plotting disk shall have a sur- fade that will allow clear pencil markings and.clean erasures. face shall have no defec
17、ts such as pits, digs, scratches, and stains which may be mistaken for pencil marks. The sur- 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection.- Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requiremen
18、ts as specified herein. specified, the supplier may utilize his own facilities or any other facili- ties 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 for
19、th in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. . Except as otherwise 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- NIL-P-50363 12 997790b 0326730 O - NIL-P-
20、50363 (MU) 4.1.1 General provisions.- The component and Subassembly inspection requirements of MIL-F-13926 form a part of the quality assurance provisions of thisspecification. Definitions of inspection terms shall be as listed in MIL-STD- 109. 4.2 First article (initial production) approval.- The r
21、equirement for first article approval and the responsibility (Government or contractor) for first article testing shall be as specified in the contract. The sample for first article approval tests shall-consist of 3 boards plus 3 each of all items covered by SQAP. The sample shall be manufactured in
22、 the same manner, using the same materials, equipment, processes, and procedures as used in regular production. All parts and materials, includ- ing packaging and packing, shall be obtained from the same source of supply as used ,in regular production. 4.2.1 Government testing.- When the Government
23、is responsible for conducting first article approval tests, the contractor, prior to submitting the sample to the Government, shall inspect thesample to insure that it conforms to all the requirements of the contract and submit a record of this inspection with the sample, including certificates of c
24、onformance for materials. 4.2.2 Contractor testing.- When the contractor is responsible or The sample and conducting first article approval tests, the sample shall be inspected by the contractor for all the requirements of the contract. a record of this inspection, including certificates of conforma
25、nce for materials shall be submitted to the Government for approval. The Government reserves the right to witness the contractors inspection. 4.3 Inspection provisions. 4.3.1 Submission of product.- Unless otherwise specified by the con- tracting officer, inspection lot size, lot formation and prese
26、ntation of lots shall be in accordance with “Submission of Product” provisions of MIL- STD2105. 4.3.2 Examination and tests. 4.3.2.1 Components and subassemblies,- All components and sub- assemblies shall be inspected in accordance with the inspection provisions contained in Supplementary Quality As
27、surance Provisions (SQAP) listed in the technical data package (TDP). In the absence of SQAPS the applicable Quality Assurance Provisions of MIL-F-13926 shall apply. Examination and tests related to Section 3 herein shall be performed on a single defect (individual characteristic) basis in accordanc
28、e with MIL-STD-105 and the sampling plans specified in Table I herein. Examination and tests for packaging, packing, and marking shall be in accordance with MIL-P-14232 and Section 5 herein. The tabulated classification of defects shall constitute the minimum inspection to be performed by the suppli
29、er after 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-o firstarticle approval and prior to Government acceptance or rejection by item or lot. TABLE I . (Conducted at a temperature between 60 to 90F) CLASSIFICATION REQUIREMENT TEST PROCEDLW CRITI
30、CAL: NONE MAJOR: AQL 1.0% Defective 101. 103. 14. 105. 106. 107. 108. i02. Plotting scale flatness Parallelism Accuracy Torque Plotting board table Braking force Dra f t ing machine Plotting disk surface . 3.5 4.6.3 3.6 4.6.4 3.7 4.6.5 3.8.1 4.6.6 , 3.8.2 Tac ti le 3.8.3 4.6.7 3.8.4 Tactile 3.8.5 Vi
31、sual KCNOR: NONE 4.3.3 Acceptance and rejection.- Rejected lots shall be screened for all defective characteristics. Removal or correction of defective units and resubmittance of rejected lots shall be in accordance with “Acceptance and Rejection“ as specified in MIL-STD-105. 4.4 Special sampling. 4
32、.4.1 General.- One plotting board shall be selected at random from each 100 produced, or from each months production, whichever occurs first. Control samples shall have successfully met all acceptance tests specified herein prior to conducting the following examinations and tests: CONTROL TEST REQUI
33、REMENT TEST PROCEDURE Materials 3.1 Drawings and Specif i- Fabricat ion 3.2 Visual and Drawings General specifications 3.3 Visual and MIL-F- cations 13926 4.4.2 Temperature tests.- Three plotting boards shall be selected at random from each 50 produced, or from each months production, which- ever oc
34、curs first, to determine compliance with the storage and operating temperatures as specified in 3.4.1, 3.4.2, 4.6.1 and 4.6.2 respectively. 4.4.3 Failure of sample.- Should any item of a special sampling fail to meet the specified test requirements, acceptance of the product will be suspended by the
35、 Government until necessary corrections have been made by 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. .- e MIL-P-50363 12 m 7777906 0326732 4 m . MIL-P- 50363(MU) the contractor and the resubmitted samples have been approved (see 4.3.3). 4.5
36、Inspection equipment Except as otherwise provided for by the contract, the contractor shall supply and maintain inspection equipment in accordance with the applicable requirements of MIL-1-45607. 4.5.1 Government furnished inspection equipment.- Where the contract provides for Government furnished t
37、est equipment, supply and maintenance of test equipment shall be in accordance with the applicable requirements specifqed in MIL-1-45607. 4.5.2 Contractor furnished inspection equipment. 4.5.2.1 Government design.- Unless otherwise specified in the con- tract, all inspection equipment spec-ified by
38、drawing number in specifi- cations or SQAP forming a part of the contract shall be supplied by the contractor in accordance with technical data listed in the List of Inspection Documents when provided with the Technical Data Package (TDP). 4.5.2.2 Contractor design.- The contractor shall provide ins
39、pection equipment compatible with the “Test Methods and Procedures“ specified in 4.6 of this specification and with the “Component Inspection“ and “Test Facilities“ requirements of MIL-F-13926. Since tolerance of test equip- ment is normally considered to be within 10% of the product tolerance for w
40、hich it is intended, this inherent error in the test equipment design must be considered as part of the prescribed product tolerance limit. Thus, concept, construction, materials, dimensions and tolerances used in the design OP test equipment shall be so selected and controlled as to insure that the
41、 test equipment will reliably indicate acceptability of a product which does not exceed 90% of the prescribed tolerance limit, and permit positive rejection when non-conforming. Construction shall be such as to facilitate routine calibration of test equipment. 0 4.6 Test methods andprocedures. 4.6.1
42、 Storage temperature.- The storage temperature test for the plotting boards at minus 80 degrees and plus 160 degrees Fahrenheit shall be conducted in conformance with 3.4.1 and the “Test Facilities“ of MIL-F- 13926. Upon return to standard ambient temperature the plotting boards shall be subjected t
43、o a visual and tactile examination and shall show no evidence of physical failure such as cracks, splits, or warpage. plotting boards shall then be subjected to all the tests specified herein. The 4.6.2 Operating temperature.- The temperature cycling for the operability tests of the plotting boards
44、at the specified temperature extremes shall be conducted in accordance with 3.4.2 and the-“Test Facilities“ of MIL-F-13926. 40 degrees and plus 150 degrees Fahrenheit, respectively, they shall be subjected to the iperability tests specified in 4.6.6. When the plotting boards are thermally stabilized
45、 at minus - 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. 4.6.3 Plotting scale flatness.- This test shall be performed by placing the “11“ graduation of the plotting scale at the center of the board, and measuring any variat2on in flatness at t
46、he “7“ graduations of the scale with standard thickness gages. flatness shall not exceed the requirements of 3.5. and “15“ Any error in 4.6.4 Parallelism.- Parallelism of the grid lines in relation to the fiducial edge of the plotting scale shall be tested on the two grid lines which intersect throu
47、gh the center of the .plotting disc. (Rotate the table 1600 mils to obtain alinement of the perpendicular grid line with the plotting scale.) in parallelism. Use a pocket optical comparator to check errors Errors shall not exceed the requirements of 3.6. 4.6.5 Accuracy.- The plotting board shall be
48、arranged for two man With this setting the following procedure operation with the plotting scale and grid lines parallel and a zero setting on the azimuth scale. shall be utilized to determine compliance with 3.7: a. Using the plotting scale, measure off and establish a point 7500 meters north of th
49、e approximate center of the disk. b. From the point established above, measure off and establish a point 15000 meters south. C. Rotate the plotting disk to 1600 mils and repeat the procedures in llall and “b“ on the new north-south line. d. With the table set in this position, draw lines through the points established on the east-west line. e. Rotate the board to zeroand draw lines through the points established on the east-we
