1、17 May 1989 MILITARY SPECIFICATION Beneficial comments (recommendations, additions,deletions) and any pertinent data which may be of use in improving this document should be addressed to:HQ, USA Communications-Electronics Command ATTN: AMSEL-ED-TO, Fort Monmouth, NJ 07703 by using the self-addressed
2、 Standardization Document Improvement Proposal COOLER-DEWAR GROUP, OR-338/V9 OR-339/V This specification is approved for use by USACECOM, Department of the Army, and is Defense. available for use by all Departments and Agencies of the Department of 1. SCOPE 1.1 Scope. in the M1 Thermal Imaging Syste
3、m (TIS). This specification covers only the cooler-Dewar group to be used 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards and handbooks. The following specifications, standards and handbooks form a part of this specification to the extent specified herein. listed in
4、 the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation. Unless otherwise specified, the issues of these documents shall be those SPECIFICATIONS MILITARY c MIL-P- 1 1268 MIL-C-49175 MIL-D-49297 STANDARDS MILITARY - Parts, Materials,
5、 and Processes Used in - Cooler, Cryogenic, Mechanical HD- 1033B/UA - Detector-Dewar DT-636/U Electronic Equipment; and HD-l033C/UA MIL- ST D- 25 2 - Classification of Visual and Mechanical Defects for Equipment, Electronic, Wired, and Other Devices Equipment MIL-STD-454 MIL-STD-810 - Environmental
6、Test Methods MIL-STD-2073-2 - Packaging Requirement Codes - Standard General Requirements for Electronic (DD Form 1426T appearing at the end of this document or by letter. LSC N/A FSC 5855 I DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. . THIS DOCUMENT CONTAINS /a
7、 PAGES. Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-Ll7330 58 H 7777706 0363385 T . MIL-C-49310 (CR) HANDBOOKS MIL-HDBK-742 - Waste Disposal Methods for Military Packagi
8、ng Materials (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Naval Publications and Forms Center, (ATTN: NPODS), 5801 Tabor Avenue, Philadelphia, PA 19120-5099.) 2.1.2 Other government documents and drawings. The following o
9、ther Government documents, drawings and publications form a part of this specification to the extent specified herein. PURCHASE DESCRIPTION PD-0182-001A(CR) - Cooler, Cryogenic Long Life, One Watt Integral HD-l033D/UA DRAWINGS 54490 5008606 - TIst Fixture Assembly Microphonics Standard 54490 5008608
10、 - Mounting Requirements 54490 5008645 - Cooler-Dewar Subassembly, 120 Element (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 of
11、ffcer). 2.2 Order of Precedence. In the event of a conflict between the text of this specification and the references cited herein, (except for associated detail specificatfon, specification sheets or MS standards), the text of this specification shall take precedence. Nothing in this specification,
12、 however, shall supersede applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Item Definition. The cooler-Dewar group is a component of the Thermal Imaging Systems (FLIR) used in the M1. The group consists of a 120 element infrared detector DT-636/U, on
13、e watt cryogenic cooler, (HD-l033B/UA, HD-l033C/UA or HD-l033D/UA), a thermal conductor and associated fastening hardware. 3.1.1 Common module selection. The detector and cooler shall. meet all requirements of their respective specifications and be inspected in accordance with the Quality Assurance
14、Provisions of these specifications prior to assembly of the cooler-Dewar group, OR-338/V,OR-339/V. The group shall be constructed in accordance with drawing 5008645. I rf: * 2 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or netwo
15、rking permitted without license from IHS-,-,-MIL-C-73LO 58 7779706 OL6338b L MIL-C-49310 (CR) Detector-Dewar DT-6 36/U MIL-D-49297 (CR) Cooler, Cryogenic, HD-l033B/UA OR MIL-C-49175B(CR) Mechanical HD-l003C/UA OR Cooler, Cryogenic Long HD-l033D/UA PD-0182-001A(CR) Life, One Watt Integral 3.1.2 Therm
16、al conductor. The bellows is a separate metal piece that thermally connects the cooler cold finger to the detector-Dewar. shall be installed in accordance with 5008645. the thermal conductor shall be approved by the Government. The bellows The installation procedure of (See 6.2.m) 3.2 Parts, materia
17、ls and processes, general. Parts, materials and processes shall be in accordance with the applicable drawings. materials and processes not specified shall conform to the requirements Parts, of MIL-P-11268. 3.2.1 Construction. The cooler-Dewar group shall be constructed in accordance with 5008645. 3.
18、3 First Article. When specified in the contract the contractor shall furnish first article assemblies in accordance with 4.3. 3.4 Performance requirements. The cooler-Dewar group shall meet the following performance characteristics. 3.4.1 Cooler-Dewar group defective elements. Unless otherwise speci
19、fied herein, the detector-Dewar shall be operated at 80K (+5, -20K). The detector- Dewar shall contain no more than 12 defective elements as defined in 6.3. the 12 defective elements, no more than 5 may be hard defects. In the central 18 elements of the array there shall be no hard defects and no mo
20、re than 2 soft defects. The central 36 elements shall contain no hard defects and no more than 4 soft defects. Hard defects shall be separated from one another by at least 4 non defective elements and shall be electrically strapped to an adjacent element with common ground. Soft defects located with
21、in the central 36 elements shall be separated from any other defect by at least 4 nondefective channels and shall not be strapped unless the strapping is from an adjacent hard defect at the end of a group of 5 commonly grounded elements. (see 6.3.5) Of O 8 , -* 3.4.2 Microphonics. When tested in acc
22、ordance with paragraph 4.6.2, no elements of the detector array shall have any noise peaks greater than 6dB above the white noise reference value from 300 to 10,000 Hz and 10dB from 10,001 to 20,000 Hz. 3.4.3 Cooldown time. The cooldown time to reach a detector temperature of 80K shall be in accorda
23、nce with Figure 1. 3 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-C-LI73LO 58 7777906 0163387 3 W I MIL-C-49310 (CR) 3.4.4 Cooler input power. The total input power to th
24、e cooler shall not exceed that shown in Figure 2 after detector temperature has reached at least 80K. (VAC), 400 - + 20 hertz (Hz) power source. The input voltage shall be 117 - + 2, volts alternating current 3.5 Environmental conditions, 3.5.1 Temperature extremes. The cooler-Dewar group shal: not
25、be damaged when exposed to temperatures from -32OC to +60OC, and stored at temperature from -54% to +71OC (see 6.3)* 3.5.2 Vibration exposure. The cooler-Dewar group shall not be damaged by vibration to the following random and superimposed sinusoidal levels for a period of 15 minutes in each of 3 m
26、utually perpendicular axes. Random: 1 x 10-3 Defective Elements. The Contractor must also validate conformance with Group A, C and D inspections for both the Detector-Dewar and the Cooler, Cryogenic, Long Life or Cooler, Cryogenic, Mechanical per paragraph 3.1 . 1 , Common Module selection. Specify
27、drawing 5008645-1 for HD-l033B/UA, HD-l033C/UA cooler or 5008645-2 for HD-l033D/UA cooler. When first article rough handling tests are not required. When first article packaging inspection reports require Acquisition Activity approval prior to production unit packing. Thermal Conductor Assembly proc
28、edure shall be submitted to: Director CECOM Center for Night Vision and Electro-optics Fort Belvoir, VA 22060-5677 ATTN: AMSEL-RD-NV-TS 6.3 Definitions. 6.3.1 Damage. Any breakage, loosening, shifting, evidence of corrosion, failure of any finish, hardware, connection or components, or any deteriora
29、tion in quality or failure to operate within the specification requirements. 9 -_- -i 1 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-tIIL-C-9330 58 m 9799906 O363393 9 m - MIL-
30、C-49310 (CR) 6.3.2 Defective element. A defective element shall be defined as one which has failed the requirements of 3.6.5, 3.6.5.1, 3.6.6, 3.6.7 and 3.6.14 of MIL-D-49297(CR). hard or soft. A hard defect is an element which fails the requirements 3.6.5.1, 3.6.6, 3.6.7 or 3.6.14 of MIL-D-49297(CR)
31、 or which has a 500K blackbody specific detectivity less than 6.0 X 109 cm Hz&W-l. shorted together are considered one hard defect. A soft defect is one which meets all requirements of 3.6.6, 3.6.7 and 3.6.14 of MIL-D-49297(CR) and has a 500K blackbody specific detect,ivity,greater than or equal to
32、6.0 X 109 cm HdW-1, but less than 8.5 X 109 cm Hz%W-1. A defective element may be classified as either Two elements 6.3.3 -Element. An element is defined as one channel in the 120-element detector array. 6.3.4 Inspection lot size. An inspection lot is defined as three months continuous production or
33、 120 units, whichever comes first, of those assemblies which have successfully passed Group A inspection. 6.3.5 Strapping. Strapping is defined as electrically connecting a defective element to a nondefective element, thus formed, exhibiting 100 percent crosstalk, shall be considered as a single def
34、ect. The pair of strapped elements 6.4 Subject term (keyword) listing. Bellows Cooler Dewar 6.5 Environmental pollution preventive. Disposal methods of packaging materials, to prevent environmental pollution, are contained in MIL-HDBK-742, the material specification, or may be obtained from the prep
35、aring activity of the applicable material specification. CUSTODIAN: Army - CR PREPARING ACTIVITY Army - CR Project 5855-A299 t Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-
36、C-4931O(CR) 25 - 20 a UNACCEPTABLE z - 2 - I i= I 1 -40 O +23 +71 +80 TEMPERATURE OC , I FIGURE 1 Cool down curve. 11 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-49330
37、58 979970b 0363395 2 d MIL-C-49310 (CR) - - 55 WATTS - 50 WATTS - UNACCEPTABLE a k O + 3 Q I -Hoc 23 C 71OC TEMPERATURE FIGURE 2. Input power with heat laad applied, . 12 - Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
