1、MILITARY SPECIFICATION I INCH-POUND/ 29 June 1988 SUPERSEDING 15 November 1965 MI L-T-81333A(OS) MIL-T-81333WP) TELESCOPE, MARK 100 MOD O AND 1 This specification is approved for use within the Naval Sea Systems Command, Department of the NavH and is available for use by all Departments and Agencies
2、 of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the construction and performance requirements for a prismatic binocular telescope intended for use aboard ship in Gun Director Mk 68 for sighting and tracking both aerial and surface targets. 2. APPLICABLE DOCUMENTS 2.1 Gov
3、ernment documents. 2.1.1 Specifications and standards. The following specifications and standards form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Speci
4、fications and Standards (DoDISS) and supplements thereto, cited in the solicitation. SPECIFICATIONS FEDERAL HH-P-96 Paper, Gasket: Fiber (Animal or Plant), Sheet QQ-C-390 Copper Alloy Castings (Including Cast Bar) MILITARY M IL-P-116 Preservation, Methods of M IL-1-152 Treatment, Moisture- and Fungu
5、s-Resistant, of Communications, Electronic, and Associated Electrical Equipment Coating of Glass Optical Elements (Antireflection) Shock Tests, H.I. (High Impact); Shipboard Machinery, Equipment and Systems, Requirements for M I L-C-675 M IL-S-901 Beneficial comments (recommendations, additions, del
6、etions) and any pertinent data which may be of use in improving this document should be addressed to: Commanding Officer, Naval Ordnance Station, Standardization Branch (Sa), Indian Head, Maryland 20640-5000, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) ap
7、pearing at the end of this document or by letter. FSC 1240 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. THIS DOCUMENT CONTAINS 13 PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-81333A 12 H 777770b 03
8、57078 b W MI L-E-2036 MIL-P-3584 MIL-P-5516 MIL-C-6183 M I L-F-7179 MIL-0-13830 M IL-E-1 5090 MIL-E-16400 M IL-F-18870 M IL-F-21424 MIL-G-23827 STANDARDS FEDERAL FED-STD-H28 MILITARY MIL-STD-109 MIL-STD-129 M I t-STD-167- MI L-STD-21 O MI L-STD-454 MIL-STD-1303 a- Enclosures for Electric and Electro
9、nic Equipment, Naval Shipboard Plastic Sheet, Polyvinyl Chloride, Plasticized, Elastomeric Packing, Preformed, Petroleum Hydraulic Fluid Resistant, 1600 F Cork and Rubber Composition Sheet; for Aromatic Fuel and Oil Resistant Gaskets Finishes, Coatings, and Sealants for the Protection of Aerospace W
10、eapons Systems Optical Components for Fire Control Instruments; General Specification Governing the Manufacture, Assembly, and Inspection of Enamel, Equipment, Light Gray (Formula No. 111) ElectronlG, Interior Communication and Navigation Equipment, Naval Ship and Shore: General 6pecfication for Fir
11、e Control Equipment, Naval Shipboard, General Specification for Filter, Polarizing (for ptical Instruments) Grease, Aircraft and Instrument, Gear and Actuator Screw, NATO Code Num- ber G-354, Metric Screw-Thread Standards for Federal Services Quality Assurance, Terms and Definitions Marking for Ship
12、ment and Storage Mechanical Vibrations of Shipboard Equipment Rype 1 - Environmental and Type II - Internally Excited) Climatic Information to Determine Design and Test Requirements for Military Systems and Equipment Standard General Requirements for Electronic Equipment Painting of Naval Ordnance E
13、quipment 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-L333A 12 W 77770b 0357077 W - 2.1.2 Other Government drawings and publications. The following ofher Government drawings and publica- tions form a part of this specification to the exten
14、t specified herein. Unless otherwise specified, the issues shall be those in effect on the date of the solicitation. a DRAWINGS NAVAL SEA SYSTEMS COMMAND 8-2-1008 to 8-2-1021 Screws for Opfical Instruments 8-2-1157 Air Valve LD167920 List of Drawings for Telescope Mark 100 Mod O LD258406 LD412528 51
15、0543 Headrest Mount 510544 Headrest Support List of Drawings for Telescope Container (Storage Box) List of Drawings for Telescope Mark 100 Mod 1 511050 Headrest PUBLICATIONS a NAVAL SEA SYSTEMS COMMAND OP 1959 Telescope Mark I00 Mod O, Description and Instructions for Installation, Align- ment, Oper
16、ation, Maintenance, and Overhaul OP 2230 Workmanship and Design Practices for Electronic Equipment OP 3750 Optical Shop Practice (Copies of specifications, standards, drawings, publications, and other Government documents required by con- tractors in connection with specific acquisition functions sh
17、ould be obtained from the contracting activity 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, the text of this specification shall take precedence. Nothing in this specification,
18、however, shall super- sede applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified in the contract or purchase order, a sampte shall be subjected to first article inspection (see 4.4 and 6.3). 3.2 Construction. Telescope Mk 100
19、 Mods O and 1, which hereinafter may be referred to as simply the tele- scope, shall be constructed as specified herein and in accordance with the drawings and specifications listed on LD167920 for Telescope Mk 100 Mod O and on LD412528 for Telescope Mk 100 Mod 1. Provided by IHSNot for ResaleNo rep
20、roduction or networking permitted without license from IHS-,-,-MIL-T-81333A 12 M 999906 0359080 4 M MI L-T-81333A(OS) c 3.2.1 Mechanical requiementa The telescope shall be constructed to have the eyepiece in a horizontal plane parallel to the plane formed by the horizontal mounting feet on the botto
21、m of the instrument, The line of sight shall be capable of being eevated 95 degrees above this plane and depressed 25 degrees below the same plane. Move- ment of parts involved in the operation of the telescope shall be positive, accurate, free from excessive friction, and shall not transmit shock o
22、r jar to optical elements or their mounts. Operating knobs and levers shall be capa- ble of being adjusted by gloved hands. The mirror and its assembly shall be so balanced as to maintain and hold its position for any setfing between- the limits of elevation specified for environmental conditions se
23、t forth herein. The torque required to turn the elevation mirror adjusting shaft shall not exceed 5 ineh-pounds. 3.2.1.1 Limit stopa Limit stops chal1 be provided to prevent derangement of mechanicms. TM travel of the line of sight of the telescope shall be limited by such stops, one stop being sef
24、at +lo0 degrees (elevation) and the other at -30 degrees (depression). . 3.2.1.2 Alignrnenf of elements. Means shalt be provided for checking, aligning, and adjusting all interrelated elements of the tetescap. 3.2-1.3 Headrest arid support. Each telescope shall oe fitted with a headrest support simi
25、lar in principle to that shown on Drawings 510543 and 530544. On this support shall be mounted the soft rubber headrest shown on Drawing 511050 (see 33). 3.2.1.3.1 Eye buffer. Each ocufar shall have provisions for mounting a soft: rubber eye buffer or eye guard as specified in MIL-F-18870. Eye buffe
26、rs or eye guards shalt be supplied by the contractor. I 3.2.1.4 Metallic parts and materials. The main body casting shall be of copper alloy No.C92300, in accordance with QQ-C-390. Other metal parts shall be of brass or bronze, in conformance with specifications listed on LD167920 or LD412528 as app
27、licable oniess permission is obtained from the contracting activity for the use of other material which may be satisfactorify substitufed. The selection of dissimilar metals for use in construction Of the telescope shall be made to minimize corrosive action caused by electrolyte action between the m
28、etals forming a galvanic cauple. Possible galvanic couples and the degree of corrosive action associated with each are listed in MfL-E-16400. 3.2.1.4.1 Non-metallic parts and materials. Non-metallic parts and materials used in the construction of the telescope shall be in accordance with the drawing
29、s and specifications listed on LD167920 or LD412528 as applica- ble and as specified herein. Maferials which are nutrients for fungus shall not be used in applications other than those approved in MIL-STD-454 unless prior approval of the contracting activity has been obtained. Nutrient materials, wh
30、en used, shalt be treated in accordance with MIL-T-152. 3.2.1.5 Lens mountings. All lenses shall be secured by means of screwed-in retaining rings, with lock rings or set screws. “Spinning” or beading metal over the edges of lenses will not be acceptable. The objective lens shall be provided with a
31、double eccentric mount for collimation. 3.2.1.6 Screws. All screws shall conform either to FED-STD-H28 or to those shown on Drawings 8-Z-1008 to 8-2-1021. All threaded parts shall also conform to FED-STD-H28 as regards pitch, form, and size of thread. 3.2.1.7 Finish. All external metal surfaces, exc
32、ept for mounting surfaces, shall be covered with two (2) coats of light gray enamel in conformance with MIL-E-15090. Operating knobs, handles, etc., shall be covered with a dur-able black baked lacquer, system no. 9, in accordance with MIL-STD-1303. 3.2.1.8 Reference designations and markings. All p
33、arts of the telescope shall be marked as shown on ap plicable drawings listed in LD167920 or LO412528 as applicable and as specified herein. Markings shall include an identification plate affixed on the surface of the central portion of the telescope. In lieu of the identification plate, such data a
34、s would be contained therein may be engraved on the exterior of the body casting provided precau- tions are taken to protect the engraved figures and numbers from being defaced by corrosion or subsequent paint- ing of the telescope. Identification will not be required for glass components. Provided
35、by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-81333A 12 7799706 0357081 b m 3.2.1.9 Degree of enclosur. The enclosure for the optical components of this telescope shall be airtight as 0 defined in MIL-E-2036 - 3.2.7.9.1 Air inlet valve and outlet plug
36、. The body of the telescope shall be provided with an air inlet valve in accordance with Drawing 8-2-1157 and an outletplug, the two located so that the interior of the telescope may be dried out by a current of dry air or other gas. The air inlet valve and the outlet plug shall be located at the ey
37、epiece end of the telescope for easy access during regassing operafions. Suitable vents and bypasses shall be provided in the interior of the body so that the air or gas has access to all optical surfaces. The words ?air outlet? shall be engraved near the outlet plug. 3.2.1.9.2 Sealing and gaskets.
38、3.2.1.9.2.1 Sealing large windows. Material used for sealing under large windows shall be in accordance with HH-P-96, 3.2.1.9.2.2 Large window gaskets. Material used for gaskets between large windows and their retainers and under all cover plates shall be 0.045 inch thick and shall be in accordance
39、with MIL-C-6183. The width of the win- dow ledge and also that portion of the window retainer in contact with the glass shall be at least as wide as the thickness of the glass window used. 3.2.1.9.2.3 Charging valve gaskets. Material used for gaskets at charging valves shall be 1/16 inch thick and s
40、hall be in accordance with MIL-P-3584. 3.2.1.9.2.4 Sealing screws. At headless set screws and for washers under the heads of external screws such as those for retaining large windows, ?Prestite? wax, or equal, shall be used. 3.2.1.9.2.5 Illuminator window gaskets. Material for gaskets under illumina
41、tor windows shall be 1/32 inch thick 3.2.1.9.2.6 Sealing operating shafts. For Telescope Mk 100 Mod O, the packings at polarizing filter operating shafts where they enter the airtight sections of the telescope shall be sealed by using ?Hycar 1232-HGR-2? or equal. and shall be in accordance with MIL-
42、P-3584. 3.2.1.9.2.7 O-ring gaskets. For Telescope Mk 100 Mod 1, the use of O-ring gaskets will be permissible provid- ed the gaskets conform to MIL-P-5516 and are of the standard sizes listed and shown thereon. 3.2.1.10 Lubrication. Provisions shall be made to lubricate all bearing and wearing surfa
43、ces. Lubricants to be used shall be selected in accordance with MIL-G-23827. 3.3 Optical requirements. 3.3.1 Optlcal characteristics. The optical characteristics of the telescope shall be as follows: Dual magnification True field 10 diameters f 5% 6 diameters f 5% for lox, approximately 7O10? for 6x
44、, approximately 1205? Exit pupil for lox, approximately 6 mm for 6x, approximately 7 mm Eye distance 25 to 27 mm at either magnification Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-T-L333A 12 9999906 0359082 W I MIL-T-81333A(OS) 1 3.3.2 Imag
45、e quality and definition. When subjected to a star test as specified herein, the image shall appear round with a sharply defined edge. The image shall be free from points, flare, rays, fog, haze, or halos other than the normal diffraction rings. No difference in coloration between one side of the st
46、ar and the other shall be seen. A slightly defocused image shall remain round. The ocular setting between the three stars shall not cacceed 0.2 dioper. 3.3.3 Resolution. The limit of resolution at any point within 1 degree of true field from the field center shall be 6 seconds or better for a magnif
47、ication of 10 diameteis and 10 seconds or better for a magnification of 6 di- ameters for parallel lines of any orientation. 3.3.4 Reticle. A reticte shall he provided for use at either magnification and shall be mounted in the right opti- cal system of the telescope. Tfiereticle pattern at either m
48、agnification shall consist of two centrally located concen- tric circles. The dimensions of the reticle pattern will be specified by the contracting activity (see 6.2.1). The lines shall be clean-cut, unbroken, and filled with suitable, hard, durable, and opaque material. The right optical system co
49、ntaining the reticte shall be free from parallax on a distant target. There shall be a nameplate, mounted in a conspicuous location on the telescope, which will give the diameter of each of the circles of the reticle pattern in true field at 6 and also at 10 diameters magnification. 3.3.4.1 Reticle illumination. Artificial itlumination shall be provided for the reticte. Such illumination shall be by means of a “Mazcfa 64: 6- to &voit, %candlepower lamp with double contac
