1、. h MIL-P-46322 B(MU) 26 January 1970 SUPERSEDING MIL-P-46322A(MU) 17 July 1964 MILITARY SPECIFICATION PERISCOPE TANK: M42 1. SCOPE 1.1 This specification covers one type of periscope known as Periscope Tank: M42. 2. APPLICABLE DOCUMENTS 2.1 The following documents, of the issue in effect on date of
2、 invitation for bids or request for proposal, form a part of this specifica- tionto the extent specified herein . SPECIFICATIONS M - Federal MMM-A- 131 Adhesives, Glass to Metal, for Bonding of Optical Elements Mi 1 i fary MIL-G- 174 MIL- C-67 5 MIL-M-13508 MIL-0-13830 MIL-F- 13926 MIL- P- 142 32 MI
3、L-1-45607 MIL- B- 606 2 1 Glass, Optical Coating of Glass Optical Elements Mirrors, Glass, Front Surface Aluminized, for Optical Elements Optical Components for Fire Control Instruments; General Specification Governing the Manufacture, Assembly, and Inspection of cation Governing the Manufacture and
4、 Inspection of Parts, Equipment and Tools for Army Materiel, Packaging and Packing of Inspection Equipment, Supply and Mainte- nance of Bonding Optical Assemblies (Glass to Metal) Fire Control Materiel: General Specifi- STANDARDS Military MIL-STD- 105 MIL- STD- 103 Sampling Procedures and Tables for
5、 Quality Assurance Terms and Definitions Inspection by Attributes ? ? - a. - -. Dr Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DRAWINGS U.S. Amy, Frankford Arsenal F7560085 Fixture, Vibration D7560124 Milli-Dioptometer 2OX F7645543 Periscope Tank
6、: M42 F8565556 Pressure Tester-Two Station PACKAGING DATA SHEET 7645543 Packaging of Periscope Tank: M42 (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 or
7、as directed by the contracting officer.) 3. ReQUIREMEJYTS . 3.1 Fabrication.- The periscope shall be manufactured in accordance I with Drawing F7645543 and drawings pertaining thereto. 3.2 General specification.- The contractor shall be responsible for adherence to, and compliance with the following
8、 requirements of MIL-F-13926: (a) Order of precedence. (b) Dimension6 and tolerances. (c) Inorganic protective surface finishes. (d) Part identification and marking. (e) Workmanship . 3.3 Environmental. 3.3.1 Storage temperatures.- The periscope shall show no evidence of damage or physical failure a
9、nd shall meet the requirements of this specification at a standard ambient temperature of between +60 and +90 Fahrenheit (F) after having been exposed to, and thermally stabilized at, -80 and +160F. . 3.3.2 30 cycles per second and an amplitude of 1/16 inch (1/8 inch total excursion) for a period of
10、 5 minutes f15 seconds. there shall be no evidence of damage or physical failure and the periscope shall meet the following requirements of this specification. Vibration The periscope shall be vibrated at a frequency of Subsequent to vibration 3.4 Cleanliness. - The periscope shall meet the cleanlin
11、ess require- ments of MIL-0-13830 and, in addition, the periscope shall not contain more than 6 particles of-dirt. equivalent to a size 50 dig. No particle-shall be in excess of the area .L t , Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.5 Seal
12、ing.- The periscope shall show no evidence of leakage when subjected to an internal pressure of dry nitrogen at 5 pounds per square inch gage (psig) for a period of two hours. requirement, the interior atmosphere of the periscope shall contain nitrogen with a dew point of at least as low as -25F and
13、 the pressure shall be 0.5 to 1.0 psig. Subsequent to meeting this 3.6 Perf ormance. 3.6.1 Collimation.- With the incident line of sight perpendicular to the mounting surface, light deviation of the emergent line of sight shall not exceed two minutes of arc in any meridian. 3.6.2 Spherical power and
14、 astigmatism.- The spherical power and astigmatism of the periscope shall not exceed five millidiopters when L using a telescope of at least two inch aperture. i 3.6.3 Image tilt.- The image of a plumb line shall be vertical within one degree. 4. QUALITY ASSURANCE PROVISIONS . 4.1 Responsibility for
15、 inspection.- Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. specified, the supplier may utilize his owri facilities or any other facili- ties suitable for the performance of the inspec
16、tion requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. Except as other
17、wise 4.1.1 General provisions.- The canponent and subassembly inspection requirements of MIL-0-13830 and MIL-F-13926 form a part of the Quality Assurance Provisions of this specification. Definitions of inspection terms shall be as listed in MIL-STD-109. . 4.2 First article (initial production) appr
18、oval.- The requirement for first article approval and the responsibility (Government or contractor) for first article testing shall be as specified in the contract. sample for first article approval tests shall consist of three periscopes, The sample shall be manufactured in the same manner, using t
19、he same materials, equipment, processes and procedures as used in regular production. All parts and materials, including packaging and packing, shall be obtained from the same source of supply as used in regular production, The 4.2.1 Government testing.- When the Government is responsible for conduc
20、ting first article approval tests, the contractor, prior to sub- mitting the sample to the Government, shall inspect the sample to insure a that it conforms to all the requirements of the contract and submit a record of this inspection with the sample, including certificates of conformance Ror mater
21、ials; -_ - -_ * c :a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-46322 B(MU) 4.2.2 Contractor testing.- When the contractor is responsible for conducting first article approval tests, the sample shall be inspected by the contractor for all
22、the requirements of the contract. 8 record of this inspection, including certificates of conformance for materials, shall be submitted to the Government for approval. The Govern- ment reserves the right to witness the contractors inspection. The sample and 4.3 Inspection provisions. 4.3,l Submission
23、 of product.- Unless otherwise specified by the con- tracting officer, inspection lot size, lot formation and presentation of lots shall be in accordance with “Submission of Product“ provisions of MIL-STD-105. 4.3.2 Examination and tests. 4.3.2.1 Components and subassemblies.- All components and sub
24、assemblies shall be .inspected in accordance with the inspection provisions contained herein using approved methods, procedures and equipment to determine con- formance to component drawing requirements. In the absence of specific test methods and procedures, the methods and procedures in MIL-0-1383
25、0 and MIL-F-13926 shall be utilized as applicable. identifiable with the examination, may be accpted in lieu of repeated tests if such tests will be destructive to the end item or its components. The Government reserves the right to require retests when deemed necessary to assure acceptable componen
26、ts. Certified test results, 4.3.2.1.1 Certification.- Certification shall include test data and results for all characteristics specified in Table III. Certification shall be provided prior to performing final acceptance inspection, and remain in effect throughout the contract for Government accepta
27、nce. This does not relieve the contractor from inspection throughout the contract production, including recording data and results therefrom. Recorded data and results shall be made available to the Government upon request. A new certification will be required should any changes occur in materials,
28、manufacturing processes and techniques previously certified. approval, examination and tests related to Section 3 herein shall be per- formed on a single defect (individual characteristic) basis in accordance . with MIL-STD-105 and the sampling plans specified in Tables I and II herein. Examination
29、and tests for packaging, packing and marking shall be in accord- ance with MIL-P-14232 and Section 5 herein. The tabulated classification of defects in Tables I and II shall constitute the mnimum inspection to be per- formed by the supplier after first article approval, compliance with the certifica
30、tion provisions of this specification and prior to Government accept- ance or rejection by item or lot. 4.3.2.2 Final acceptance inspection.- Subsequent to first article TABLE I - CLASSIFICATION OF DEFECTS CLASS CHARACTERISTICS REQUIREMENT TEST PROCEDURE CRITICAL: NONE - MAJOR: AQL 0.65 percent defe
31、ctive 101, Vibration 102. , Cleanliness 3.3.2 4.6.2, 4.6.2.1 3.4 4.6.3 -_ loP. colliniation 3.6.1 4.6.5, 4.6.5.1 a. ! I .4 * -I3 - 1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-4b322B 12 W 77777Ob 0311065 T MIL-P-46322B(MU) TABLE I - Cont.d
32、 104. Spherical power and astigmatism 105. Image tilt 3.6.2 4.6.5, 4.6,5.2 3.6.3 4.6.5, 4.6.5.3 - MINOR: NONE NOTE: The tests in Table I shall be conducted in accordance with the test condition requirements in the “Test Facilities“ requirement of . MIL-F- 13926. 4.3.3 Acceptance and rejection.- Reje
33、cted lots shall be screened for all defective characteristics. Removal or correction of defective units and resubmittance of rejected lots shall be in accordance with llAcceptance and Rejection“ as specified in MIL-STD-105. 4.4 Control tests. 4.4.1 Special sampling.- Samples shall be selected from l
34、ots at random using inspection level S-3 Table I of MIL-STD-105. Acceptance or rejection of the lot shall be in accordance with AQL 2.5 of Table II-A of MIL-STD-105. The samples shall have met all the requirements and tests outlined in Table I prior to and after being subjected to the examinations a
35、nd tests in Table II. TABLE II CHARACTERISTIC REQUIREMENT TEST PROCEDURE 301. Storage temperature 302. Sealing 3.3.1 4.6.1 3.5 4.6.4 4.4.2 Failure of sample.- Should any one item of a special sampling fail to meet the specified test requirements, acceptance of the product shall be suspended by the G
36、overnment until necessary corrections have been (see 4.3.3). provided for the characteristics in Table III. Certification shall be in accordance with the provisions in 4.3.2.1 and 4.3.2.1,l. .made by the contractor and the resubmitted samples have been approved 4.4.3 General.- Unless otherwise speci
37、fied, certification shall be TABLE III . CHARACTERISTIC 303. Fabricatfon (general) Fabrication (components) 304. Optical glass 305. Optical element bonding 306. Optical element performance 307. Optical element surface quality 308. Optical element coating TEST DATA REQUIREMENT TO COMPLY WITH 3.1 3.1
38、Applicable dwgs (see 3.11 Inspection dwgs C7641866, D7680600 and Specification: Applicable dwgs (see 3 l) ; MIL-0-13830 2. Upon completion of both exposures, the peri- 4.6.2 4.6.2.1 4.6.3 Cleanliness.- The optical surfaces of the periscope shall be Employing transmitted examined for cleanliness in a
39、ccordance with MIL-0-13830 utilizing the procedure herein to determine conformance to 3.4. light, hold the periscope with the light source at the upper window and conduct the examination while viewing through the lower window.*-Repeat the procedure by illuminating the lower window while viewing thro
40、ugh the upper window. , 4.6.4 duct this test. specified value and obsem no loss in pressure for a minimum period of two hours. a commercially available dew point tester to flush the periscope until the dew point of the bled gas and its internal pressure is as specified in 3.5. The periscope shall th
41、en be again sealed, subsequent to test 4.6.1 and 4.6.2. 4.6.5 Performance.- Tests for collimation, spherical power and astigmatism, and image tilt shall utilize a calibrated target, auxiliary telescope (with parallax removed) and a holding medium to support and position the periscope under test. The
42、 holding medium shall assure that the entrance ray is perpendicular to the periscope mounting surface and also that the offset distance - between intersection of the auxiliary telescopes reticle lines and intersection of the target lines - equals the distance between the geometric centers of perisco
43、pe windows 7645551 and 7645552. The test target shall have a horizontal and vertical cross- line with limit marks in each meridian to measure deviation in the center of the field of view (FOV). Sealing.- Utilize test equipment specified in 4.5.2.3 to con- Pressurize the periscope with dry nitrogen g
44、as to the Subsequent to this test, dry nitrogen gas shall be used with This test shall be performed If a wall target is used, the dimension of one Mil Size = Target Distance (in inches). -mll shall be computed by the formula: 1000 Provided by IHSNot for ResaleNo reproduction or networking permitted
45、without license from IHS-,-,-. - . .- MIL-P-46322B 12 7977706 03LLOb 5 MIL-P-46322B (MU) Prior to conducting periscope tests the telescope vertical line and the target vertical line shall be made plumb, and the holding medium made level on a qualified surface. 4.6.5.1 Collimation.- This test shall b
46、e performed under the conditions of 4.6.5 and in accordance with 3.6.1. direct a line of sight through the telescope and periscope to the target, and observe in each median compliance with 3.6.1. To determine conformance to 3.6.1, 4.6.5.2 Spherical power and astigmatism.- Utilize a four line resolut
47、ion chart as depicted in MIL-0-13830 and a milli-dioptometer (see 4.5.2.3). as applicable to determine conformance to 3.6,2 in any two target line sets which are 90“ with respect to each other. Employ the setup and operating instructions on Drawing D7560124 4.6.5.3 Image tilt.- Utilize an auxiliary
48、telescope with a vertical reticle line having a FOV which subtends an angle greater than 80 mils and a calibrated target. appropriate markings to indicate - over an 80 mil FOV - a displacement of the periscopes line of sight from its vertical line which subtends a 1.5 mil angle, To determine conform
49、ance with 3.6.3, establish coincidence between the vertical reticle line of the auxiliary telescope and the vertical target line image - while sighting through the periscope - at one extremity of the 80 mil FOV. displacement of the targets vertical line image that will subtend an angle greater than 1.5 mil. The target shall have a vertical line and Observe across the 80 mil FOV no 5. PREPARATION FOR DELIVERY 5.1 aging, packing, and marking.- Packaging, p
