1、a . s e e which may be of use in improving this document should be addressed to: Commander, US Army Armament Research and Development Center, Attn: AMSMC-QA, Dover, New Jersey 07801-5001 by ung the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of th
2、is document or by lettn. 1 MIL-M-48640 (AR) 31 January 1986 MILITARY SPECIFICATION MUZZLE BORESIGHT DEVICE 9364909 (M27 FOR 12OMM GUN TUBE) This Specification is approved for use within the U.S. Army Armament, Munitions and Chemical Command and is available for use by all Departments and Agencies of
3、 the Department of Defense. 1. SCOPE 1.1 Scope. This specification establishes the requirements and quality assurance provisions for the cased series of the Muzzle Boresight Device 9364909 (M27 for 120MM Gun Tube), herein referred to as MBD. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Sp
4、ecifications and standards. specifications and standards form a part the extent specified herein. Unless 0th of these documents shall be those listed Department of Defense Index of Specifica (DoDISS), and supplement thereto, cited The following of this specification erwise specified, the in the issu
5、e of the tions and Standards in the solicitation. to issues SPECIFICATIONS MILITARY MIL-F-13926 - Fire Control Material, General Specification Governing the Manufacture and Inspection of MIL-P-14232 - Parts, Equipment, and Tools for Army Material, Packaging and Packing of MIL-1-45607 - Inspection Eq
6、uipment, Acquisition, Maintenance, and Disposition of MSC N/A FSC 1240 DISTRIBUTION STATEMENT A. Approved for sublic release distributkon is unlimited. r -. T THIS DOCUMENT CONTAINS /b PAGES. / - =_ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL
7、-M-4b40 12 H 779990b 0322750 3 MIL-M-48640 (AR) STANDARDS MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes MIL-STD-109 - Quality Assurance Terms and Definitions MIL-STD-810 - Environmental Test Methods 2.1.2 Other Government documents, drawings, and publications. Th
8、e following other Government documents, drawings, and publications form a part of this specification to the extent specified herein. Unless otherwise specified, the issues shall be those in effect on the date of solicitation. PACKAGING DATA SHEET P9364909 - Packaging of Muzzle Boresight Device (M27
9、for 120MM Gun Tube) DRAWINGS US ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER (ARDC) 9364909 - Muzzle Boresight Device (M27 for 120MM Gun 9364930 - Test and Alignment Fixture for M27 Muzzle Tube) Boresight Device (120MM) (Copies of specifications, standards, handbooks, drawings, and publications req
10、uired by manufacturers in connection with specific acquisition functions should be obtained from the contracting acivity or as directed by the contracting officer.) 2.2 Order of precedence. In the event of a conflict between the text of this specification and the references cited herein (except for
11、associated detail specifications, specification sheets, or MS standards), the text of this specification shall take precedence. Nothing in this specification, however, shall supersede applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Fabrication. The
12、MBD shall be manufactured in accordance with Drawing 9364909 and drawings pertaining thereto and, when assembled, shall meet the requirements of this specification. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-h 12 m 9999906 03i2753 5 3.2
13、General spec MIL-M-48640 (AR) fication. The provisAans of MIL-F-13926 apply. 3.2.1 Ambient conditions. Standard ambient conditions shall be as follows: a. Temperature 73O + 18OF b. Relative humidity 50 pxcent 5 30 percent c. Atmospheric pressure 28.5 + 2.0 - 3.0 in. Hg. 3.3 First article inspection.
14、 This specification contains the submission of first article samples by the contractor shall be as specified in the contract. technical provisions for first article inspection. Requirements for 3.4 Cleanliness. a. Defects. There shall be no evidence of moisture, grease, condensates, fractures, and a
15、dhesive separations on any glass component when viewing either through the eyepiece or objective end. b. Dirt. When viewing through the eyepiece, there shall be no more than three (3) particles of dirt or foreign material (classed as dirt) appearing within a 50 Mil diameter central field of view. Th
16、ere shall be no more than three dirt particles appearing outside the specified field of view. The angular separation between dirt particles shall be at least 15 Mils. Dirt particles smaller than 1/4 reticle dot width shall be ignored regardless of distribution. The size of any particle shall not exc
17、eed the apparent width of the reticle dot. 3.5 Perf ormance. 3.5.1 Collimation. Collimation error shall not exceed 50 seconds. 3.5.2 -. Maximum allowable parallax shall not exceed 10 seconds. 3.5.3 Collimation repeatability. The collimation repeatability error shall not exceed 30 seconds. All measur
18、ements must meet the collimation requirements of 3.5.1. 3.5.4 Transmission measurement. Transmission shall be 60 percent minimum when measured using a photopic filter. 3.5.5 5. The resolution of the system shall not exceed 8 seconds. 3 Provided by IHSNot for ResaleNo reproduction or networking permi
19、tted without license from IHS-,-,-MIL-M-48640 12 m 777770b 0322752 7 m MIL-M-48640 (AR) 3.5.6 Eyepiece focus measurement. The eyepiece setting shall be -0.75 2 0.25 diopters. plus or minus 0.14X. 3.5.7 Magnification. The requirement for magnification is 7X 3.5.8 Field of view (FOV). The FOV shall be
20、 6 degrees minimum. 3.6 Purqinq. The MBD shall be purged with dry nitrogen for a period of time until it is determined that the dew point is at least -25 degrees F at atmospheric pressure. The unit shall be sealed immediately after purging. 3.7 Sealing. Care will be utilized to keep MBD internal atm
21、osphere purged. The MBD shall show no evidence of leakage in excess of 0.1 PSI when subjected to an internal pressure of 5 PSIG plus or minus 0.1 PSI for a period of one hour. The interior atmosphere of the accepted MBD shall contain nitrogen having a dew point at least as low as minus 25OF at a pre
22、ssure of between 0.25 and 0.5 PSIG. 3.8 Interchanqeability verification. All MBDs shall be interchangeable (see 4.7.6 . 1) . 3.9 Environmental . 3.9.1 Storaqe temperature. The MBD shall show no evidence of cement separation, glass breakage, or other physical failure and shall meet the requirements o
23、f this specification at standard temperature (plus 15 degrees C to 32 degrees C) after having been exposed and thermally stabilized at temperatures of plus 71 degrees C and minus 62 degrees C. 3.9.2 Operating temperatures. The MBD shall be mechanically operable while thermally stabilized at plus 65
24、degrees C and minus 40 degrees C. The rate of temperature change shall not exceed 10 degrees C/hour. 3.9.3 Vibration. The cased MBD shall be capable of withstanding vibration when subjected to Test Method 514.2, Procedure X, Curve AV, Equipment Category G, of MIL-STD-810. Test Method 516.2, Procedur
25、e I, Figure 516.2-2, Time Duration 11 milliseconds, of MIL-STD-810, except that the peak acceleration shall be 40 gs. 3.9.4 Shock. The MBD shall withstand shock in accordance with 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-Bb40 12 m 7777
26、90b 0322753 9 m- MIL-M- 4 8 6 4 O (AR) 3.9.5 Humidity. The MBD shall operate as specified herein at up to 100 percent relative humidity (see 4.7.9.7). 3.9.6 Dust. The MBD shall operate as specified herein after exposure to moving dust for not less than 12 hours at velocities up to 1750 feet per minu
27、te (see 4.7.9.8). 3.9.7 Salt fog. The MBD shall operate as specified herein after exposure to a 5 percent sodium chloride atomized spray for not less than 48 hours (see 4.7.9.9). 3 . 10 Wor kmanship . 3.10.1 Optical inspection. The MBD shall be viewed with the unaided eye from the objective end agai
28、nst a background of approximately 300 foot candles. There shall be no cracks, chips, or bond separation. When a focused target is viewe through the eyepiece end, there shall be no scratches, chips, dirt, or coating deterioration which would be a distraction to the observer. 3.10.2 Mechanical inspect
29、ion. The mechanical parts of the unit shall be inspected for broken parts, completeness, workmanship, and functionability. The locating block shall be checked for freedom and smoothness of operation. Paint chips or nicks which do not affect the function of the instrument shall be touched up. All bur
30、rs and excess material shall be removed from castings and forgings. All surfaces, including threads, shall be free from burrs and sharp edges. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsibl
31、e for the performance of all inspection requirements as specified herein. Except as otherwise specified 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 Go
32、vernment. 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. 4.1.1 General provisions. The component and subassembly inspection requirements
33、 of 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. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-4bYO 12 W 777770b 0322754 O W MIL-M-4864
34、0 (AR) 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.4). b. Quality conformance inspection (see 4.5). 4.3 Inspection conditions. Unless otherwise specified, all inspections shall be performed in accordanc
35、e with the quality assurance provisions of MIL-F-13926 and the conditions of 3.2.1. and the designation of responsibility for first article inspection to either the Government or the contractor shall be specified in the contract. 4.4 First article. The requirement for first article approval 4.4.1 Sa
36、mple. The first article sample shall be three assemblies selected at random by the Government representative from the first 15 production assemblies. 4.4.2 Inspection. The sample shall be subjected to all the inspections specified in Table I. 4.4.3 Failure. Failure of any assembly to meet any requir
37、ement shall be cause for refusal to grant first article approval. The Government reserves .the right to terminate first article inspection upon failure of any assembly to comply with any stated requirement. 4.4.4 Responsibility. The contractor shall inspect the sample for conformance to all contract
38、ual requirements and shall submit a record of this inspection with the sample and certificates of conformance for materials. The Government reserves the right to witness inspections performed by the contractor. 6 b Provided by IHSNot for ResaleNo reproduction or networking permitted without license
39、from IHS-,-,-HIL-M-4bqO 12 7777706 0322755 2 I I I L I I i I I I I I MIL-M-48640 (AR) TABLE I. First article tests I tem Character ist ic Requirement Test Procedure 1 Fabrication 3.1 2 General specifications 3.2 Applicable visual draw i ng s MIL-F- 139 2 6/V isual 3 Performance 3.5 4.7.4 4 Sealing 5
40、 Shock 6 Vibration 7 High temperature 8 Low temper at ur e 9 Temperature cycling 3.7 3.9.4 3.9.3 4.7.8 4.7.9.3 4.7.9.2 3.9.1 & 4.7.9.4 3.9.1 & 4.7.9.5 3.9.2 3.9.2 3.9.1 & 3.9.2 4.7.9.6 10 Humidity 3.9.5 4.7.9.7 12 Salt fog 3.9.7 4.7.9.9 11 Dust 3.9.6 4.7.9.8 4.5 Quality conformance inspection. Inspe
41、ction plans A and B of 4.5.1 and 4.5.2 shall apply. 4.5.1 Inspection plan A. 4.5.1.1 General sample and tests. One assembly, as a control sample, shall be selected at random by the Government representative from each 100 assemblies produced and shall be subjected to all the tests in Table III. 7 Pro
42、vided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-M-LlBb40 22 m 0b 032275b 4 -I MIL-M-48640 (AR) 4.5.1.2 Environmental sample and tests. Two assemblies, as a control sample, shall be selected at random by the Government representative- from each 100
43、assemblies produced or from each months production, whichever occurs first. All the tests in Table IV shall be applied separately to each assembly in the sample. 4.5.1.3 Rejection. If any one assembly of either sample fails to meet any specified requirement, the lot shall be rejected. Rejected lots
44、may be resubmitted in accordance with the provisions of MIL-STD-105. 4.5.2 Inspection plan B. 1 4.5.2.1 Sample and tests. Each assembly in every lot shall be subjected to all the tests in Table II and shall be examined visually for completeness, improper assembly, and evidence of poor wor kmanship.
45、4.5.2.2 Rejection. If any assembly fails to meet any specified requirement, the defective assembly shall be rejected and removed from the lot and may be resubmitted only after all defects have been corrected. 4.5.3 Inspection equipment. Except as otherwise provided for by the contract, the contracto
46、r shall supply and maintain inspection equipment in accordance with the applicable requirements of MIL-I -4 5 60 7. 4.5.4 Packaqinq inspection. The sampling and inspection of the preservation, packaging, packing, and container marking shall be in accordance with the provisions of Packaging Data Shee
47、t P9364909 and MIL-P- 142 3 2. 4.6 Inspection provisions. 4.6.1 Submission of product. Uness otherwise 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. 4.7 Examination and
48、 tests. 4.7.1 Components and subassemblies. All components and subassemblies shall be inspected in accordance with the applicable Quality Assur ance Provi siok of MIL-F-13 92 6. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I I MIL-M-48640 12 779
49、7706 0322757 b MIL-M- 4 86 4 O (AR) 4.7.2 Boresight collimator. Examination and tests herein shall be performed on a single defect (individual characteristic) basis in accordance with MIL-STD-105 and the sampling plans specified in Tables II and III herein. Examination and tests for pakaging, packing, and marking shall be in accordance with MIL-P-14232, Level B. be performed by the supplier prior to
