1、MIL-C-47380 58 7777906 0163586 7 1. r MIL-C-49380(ER) 16 June 1980 . MILITARY SPECIFICATION COMMANDERS DISPLAY FOR AN/VSG-2 This specification is approved for use by USAERADCOM, Department of the Army, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.
2、1 Scope. This specification covers the Commanders Display for the Sight, Thermal, Tank Mounted, AN/VSG-2. 2. APPLICABLE DOCUMENTS 2.1 Issues of documents. The following documents of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the e
3、xtent specified herein. SPEC IF1 CAT IONS FEDERAL NN-P-71 QQ-S-781 PPP-B-60 1 PPP-F-320 MILITARY MIL-P-116 MIL-B-117 MIL-P-11268 MIL-P-26514 MIL-E-49383 Pallets, Material Handling, Wood, Stringer Construction, 2-Way and 4-Way (Partial) Strapping, Steel, and Seals Boxes, Wood, Cleated-Plywood Fiberbo
4、ard, Corrugated and Solid, Sheet Stock (Container Grade), and Cut Shapes Preservation-Packaging, Methods of Bags, Sleeves and Tubing-Interior Packaging Parts, Materials, and Processes Used in Polyurethane Foam, Rigid or Flexible Eyepiece, Biocular, AN/VSG-2 Electronic Equipment for Packaging Benefic
5、ial comnents (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Hq, USA Electronics Research and Development Command, ATTN: DRDEL-E, 2800 Powder Mill Road, Adelphi, MD 20783 by using the self-addressed Standard- izati
6、on Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. FSC 5855 THIS DOCUMENT CONTAINS /y PAGES. I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-LI7380 54 W 7777906 OLb3587 O m STANDARDS MILITARY M
7、IL-STD-129 MIL-STD-147 MIL-STD-150 MIL-STD-252 MIL-STD-454 MIL-STD-810 MIL-STD-1188 MS-24535 DRAWINGS DLSM-B-804913 SM-C-805906 - Marking for Shipment and Storage - Palletized and Containerized Unit Loads 40 Inch x 48 Inch Pallets, Skids, Runners, or Palletized Type Base - Photographic Lenses - Clas
8、sification of Visual and Mechanical Defects for Equipmert, Electronic, Wired, and Other Devices Electronic Equipment - Standard General Requirements for - Environmental Test Methods - Commercial Packaging of Supplies and - Fastener-Container Closure E quipmen t - Commanders Display, ANfVSG-2 - Image
9、 Intensifier, 40 Millimeter (Copies of specifications, standards, drawings, and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) I 3. REQUIREMENTS 3.1 Item definition. The
10、 Commanders Display for AN/VSG-2, herein known as the commanders display, relays an image of the infrared scene produced by the ANfVSG-2 from the gunners station to the commanders station. 3.2 Construction. The commanders display shall be constructed in accor- dance with DLSM-B-804913 and as specifi
11、ed herein. 3.3 First article. When specified in the contract (see 6.21, the contractor shall furnish five (5) commanders displays for first article inspection and approval. 3.4 Parts, materials and processes. Parts, materials and processes shall be as specified herein and as shown on the applicable
12、drawings. materials and processes not specified shall be selected in accordance with MIL-P-11268. Parts, 3.5 Major components. The commanders display consists of the following comDonents and subassemblies and shall be constructed in accordance with applicable drawings, specifications and as specifie
13、d herein. 2 - i O, Qp Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-47380 58 7777906 0363588 2 r c a. b. Image Intensifier - SM-C-805906 c. Optical Relay Assembly d. Display Assembly Biocular Eyepiece Display - MIL-E-49383 3.6 Preconditioning
14、. Each commanders display shall be subjected to a 48- hour preconditioning prior to delivery. 3.7 Operation. 3.7.1 Luminance uniformity. With a uniform scene input, the luminance of each display shall not vary more than +i5 percent from the average display luminance over the central 50 percent of th
15、e display. 3.7.2 Power. The commanders display power requirements shall not exceed 5 watts. 3.7.3 Optical transfer function (OTF). The modulation transfer function (MTF) shall satisfy the performance characteristics as shown below over the center of the display in the scan direction, with the system
16、s gain set so that the system is operating within its dynamic range and below saturation. Optical transfer function f (cycles/milliradian) at input of biocular 0.06 0.13 0.27 0.36 0.41 0.47 0.55 MTF 0.98 0.92 O. 78 0.69 0.64 0.57 0.50 3.7.4 Apparent angular magnlfication. The ratio of the image angu
17、lar subtense to the corresponding object angular subtense shall not be less than 1.05 times, when viewed through the biocular eyepiece. 3.7.5 Spatial uniformity. The variance in spatial uniformity of the commanders display shall not exceed +10 percent in the horizontal or - vertical directions over
18、the entire dzsplay. 3.7.6 Effective focal length (EFL). The effective fqcal length of the relay system, measured without the image intensifier (I ) assembly shall be -62, - +3 mm. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-47380 58 77777
19、06 0263587 4 I MIL-C-49 380 (ER) 3.7.7 f/number. The f/number shall be f/5.6. 3.7.8 Gain. The commanders display shall have a minimum luminance gain of 20. 3.7.9 Resolution. The visual axial resolution of the commanders display shall be not less than 20 line pairs per millimeter. 3.7.10 Controls. 3.
20、7.10.1 Contrast. A single control shall be provided to simultaneously control the gain of all channels to provide a minimum of 24 dB of attenuation. 3.7.10.2 Polarity switch. A polarity switch shall be provided to reverse the image contrast and cause the display to represent hot or cold targets as e
21、ither bright or dark. the contrast or brightness controls. Switching polarity shall not require an adjustment of 3.7.10.3 Brightness. A control shall be provided for setting the back- ground level of the image. 3.7.10.4 Commander and gunner. A control shall be provided for the comman- der that will
22、activate either the commanders or the gunners brightness, con- trast, and polarity controls. 1 3.7.11 Sealing, The commanders display shall show no evidence of leakage in excess of 0.2 psig when subjected to an internal pressure of 5, 51 psig for a minimum of 2 hours. The interior atmosphere of the
23、units shall contain dry nitrogen (having a maximum dew point of -32 C at atmospheric pressure), at a pressure of 0.25 to 5.0 psig when delivered. O 3.8 Environment. 3.8.1 Low temperature. 3.8.1.1 Operation. The commanders display shall not be damaged (see 6;3) when operated at temperatures to -32OC.
24、 3.8.1.2 Storage. The commanders dis lay shall not be damaged when sub- g jected to storage at temperatures to -57 C. 3.8.2 High temperature. 3.8.2.1 Operation. The commanders display shall not be damaged when operated at temperatures to +52OC. 3.8.2.2 Storage. The commgnders display shall not be da
25、maged when stored at temperatures to +71 C. 3.8.3 Temperature shock. The commanders display shall not be damaged when subjected to sudden changes in temperature between -57OC to +7loC following a 4-hour soak at each temperature. 4 , Provided by IHSNot for ResaleNo reproduction or networking permitte
26、d without license from IHS-,-,-* MIL-C-47380 58 M 7797706 0363570 O M MIL-0-49380 (ER) 3.8.4 Altitude . 3.8.4.1 Operation. The commanders display shall not “e damage, when operated at altitudes up to 10,000 feet above sea level. 3.8.4.2 Transportation. The commanders display shall not be damaged whe
27、n subjected to altitudes up to 40,000 feet above sea level. 3.8.5 Shock. 3.8.5.1 Basic shock. The commanders display shall not be damaged when subjected to basic shock of 35 gs at 15 milliseconds duration. 3.8.5.2 High intensity shock. The commanders display shall not be damaged when subjected to hi
28、gh intensity shock of 100 gs at 4 milliseconds duration. 3.8.5.3 Bench handling shock. The commanders display shall not be damaged when subjected to shocks encountered in bench handling. 3.8.6 Vibration. The Commanders display shall not be damaged when subjected to the following random and superimpo
29、sed sinusoidal levels for a period of 15 minutes in each of three mutually perpendicular axes. (Group C: 5 minutes per axis.) -3 2 Random: 6 x 10 g /Hz, 5 to 500 Hz Sine: 1.06 gs, X axis 1.51 gs, Y axis 1.06 gs, Z axis Octave 1 42 to 84 Hz Octave 2 84 to 168 Hz 3.8.7 Waterproofness. The commanders d
30、isplay shall withstand water hosing at a minimum of 5 pounds per sguare inch (psig) through a l-inch nozzle parallel to the joints from a distance of 3 feet maximum for a time of 5 minutes minimum, without intake of water or damage. 3.8.8 Humidity. The commanders display shall operate and not be dam
31、aged by exposure to 100 percent relative humidity. 3.8.9 Dust. The commanders display shall not be damaged when exposed to dust at velocities up to 1750, $1250 feet per minute (fpm) for 12 hours. 3.9 Reliability. Not applicable. 3.10 Workmanship. Workmanship shall be as specified in MIL-STD-454, Req
32、uirement 9. 5 . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-7380 58 m 799970b 0363593 2 m MIL-C-49 380 (ER) 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the con- tract, the contractor is r
33、esponsible for the performance of all inspection requirements as specified herein. tract, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disap- proved by the Government. The Government reserves the right to
34、perform any inspections set forth in the specification where such inspections are deemed necessary to assure that supplies and services conform to prescribed require- ment s. Except as otherwise specified in the con- 4.1.1 Materials handling. The supplier is responsible for processes, parts, and mat
35、erials used in manufacturing the commanders display in accordance with referenced specifications, standards, and drawings as specified herein. 4.2 Classification of inspections. Inspections shall be classified as fol- lows : a. First article inspection (4.3) b. Quality conformance inspection (4.4) c
36、. Inspection of packaging (4.10) 4.3 First article inspection. When specified in the contract, the contractor shall furnish 5 commanders displays for first article inspection (see 6.2). 4.3.1 Inspection. Each assembled first article commanders display shall be examined in accordance with table I. Pr
37、esence of one or more defects shall be cause for rejection of the commanders display. 4.3.2 Preconditioning. Each commanders display which has passed the inspection of 4.3.1 shall be subjected to the preconditioning of 4.6. TABLE I. Inspection. Defects 101. 102. Finishes not protecting sub- 103. Scr
38、atched or chipped optics 104. Improper or absent marking 105. Color of finishes incorrect 106. Workmanship not as specified 107. Contrast control 108. Polarity switch 109. Brightness control 110. Commander and gunner control Any part or component missing or damaged strates (scratches, etc) or labels
39、 Requirement paragraph 3.2 3.2 3.2 3.2 3.2 3.10 3.7.10.1 3.7.10.2 3.7.10.3 3.7.10.4 Inspection criteria MIL-STD-252 MIL-STD-252 MIL-STD-252 MIL-STD-252 MIL-STD-252 MIL-STD-252 4.7.10 4.7.10 4.7.10 4.7.10 I 6 . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from
40、IHS-,-,-MIL-C-49380 (ER) 4.3.3 Tests. 4.3.3.1 First article inspection. From commanders displays that have passed preconditioning of 4.3.2, five (5) first article commanders displays shall be subjected to all tests of table II, in any order. Unless otherwise specified, the tests of table II shall be
41、 performed with the Commanders display at the ambient conditions (see 6.3). Failure of any commanders display to pass all tests in table II shall constitute failure of first article . TABLE II. inspection Luminance uniformity Power OTF Apparent angular magnification Spatial uniformity Effective foca
42、l length f /number Gain Resolut ion Contrast control . Polarity switch Brightness control Commander and gunner control Sealing Low temperature High temperature Tempera ture shock Altitude Shock Vibration Water pro0 fne s s Humid it y Dust First article inspection. Requirement paragraph 3.7.1 3.7.2 3
43、.7.3 3.7.4 3.7.5 3.7.6 3.7.7 3.7.8 3.7.9 3 7 10 1 3.7.10.2 3.7.10.3 3.7.10.4 3.7.11 3.8.1 3.8.2 3.8.3 3.8.4 3.8.5 3.8.6 3.8.7 3.8.8 3.8.9 Test paragraph 4.7.1 4.7.2 4.7.3 4.7.4 4.7.5 4.7.6 4.7.7 4.7.8 4.7.9 4.7.10 4.7.10 4.7.10 4.7.10 4.7.11 4.8.1 4.8.2 4.8.3 4.8.4 4.8.5 4.8.6 4.8.7 4.8.8 4.8.9 4.4
44、Quality conformance inspection. 4.4.1 Inspection. Each assembled commanders display SI 11 be examined in accordance with table I. Presence of one or more defects shall constitute failure of that commanders display. 4.4.2 Preconditioning. Each commanders display which has passed the inspection of 4.4
45、.1 shall be subjected to the preconditioning of 4.6. 4.4.3 Group A inspection. Each commanders display that has passed the Failure of any commanders display to pass all preconditioning of 4.4.2 shall be inspected for the attributes specified in table III in any aequence. ,- the tests of table III sh
46、all constitute failure of that commanders display. I a 7 . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-49380 58 999970h 0163593 b = 1 Inspec tion Gain Re so lut ion Contrast control Polarity switch Brightness control Commander and gunner co
47、ntrol 4.4.4 Group B inspection. Group B inspection is not applicable. 4.4.5 Group C inspection. Inspection lots (see 6.2) shall be formed from commanders displays which have passed the Group A inspections of 4.4.3. Requirement Paragraph 3.7.8 3.7.9 3.7.10.1 3.7.10.2 3.7.10.3 3.7.10.4 4.4.5.1 Monthly
48、 Group C. Five commanders displays shall randomly be se- lected from each lot and inspected for the attributes specified in table IV. Failure of any commanders display to pass all the tests of table IV shall constitute Group C failure. Inspection Luminance uniformity Power Apparent angular magnifica
49、t ion Spatial uniformity f /number Effective focal length Sealing OTF 4.4.5.2 Trimonthly Group C. Two commanders displays which have passed the tests of 4.4.3 and 4.4.5.1 shall randomly be selected from the first lot and Requirement Paragraph 3.7.1 3.7.2 3.7.4 3.7.5 3.7.6 3.7.7 3.7.11 3.7.3 every third lot thereafter. table V in the order listed. Following completion of the tests of
