1、MIL-PRF-49LCOD E 0b 2087232 242 Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving the document should be addressed to: HQ, USA Communications-Electronics Command, ATTN: AMSEL- LC-LEO-E-EP Fort Monmouth, NJ 07703-5023 by using the Stan
2、dardization Document Improvement Proposal (DD Form 1426) appearing at the end of thi document by letter. 4 , PERFORMANCE SPECIFICATION ENTRANCE HOUSING ASSEMBLY VIEWER, DRIVERS, NIGHT VISION, AN/VVS-2 (V) I INCH-POUND MIL-PRF-49150D (CR) MIL-E-49150C (CR) 26 May 1992 This specification is approved f
3、or use by US Army Communications- Electronics Command, Department of the Army, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the Entrance Housing Assembly which is part of Viewer, Drivers Night Vision, AN/VVS-Z(V)
4、. 1.2 Classification. Entrance housing assemblies covered by this specification must be the following types as specified; Type 1 Entrance Window and Mirrcr Housing Assembly for Type II .Prism Objective Housing Assembly for AN/VVS-2(V)2A Type III Prism Objective Housing Assembly, for AN/VVS-2(V)3 Typ
5、e IV Prism Objective Housing Assembly for AN/VVS-2(V)4 AN/VVS-2 (V) 1A (M60 Application) (XM-1 Application) (FVS Application) (Paladin Application) 2. APPLICABLE DOCUMENTS DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. Copyright Communications - Electronics Command
6、 Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-PRF-47150D = 999990b 2087233 189 H MIL-PRF-4 9150D (CR) 2.1.1 Reference documents, drawings and publications. The following other Government documents, drawings and publica
7、tions form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation (see 6.2.e). DRAWINGS USA COMMUNICATIONS-ELECTRONICS COMMAND SM-D-77133/SM-D-771476 - Entrance Housing Assembly (V1A SM-D-77143/SM-D-771486 - Prism Objective
8、Housing Assembly Configuration) (V2A/V3 Configuration) 5005814 - Prism Objective Housing Assembly (V4 Configuration) (Copies of specifications, standards, drawings, and publications required by contractors in conr.ection with specific procurement functions should be obtained from the procuring activ
9、ity 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 takes precedence. Nothing in this document, however, supersedes applicable laws and regulations
10、unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Description. The entrance housing assembly is herein referred to as the entrance assembly. The entrance assembly is the portion of the drivers viewer outside the vehicle. It directs the line of sight to the objective lens. 3.2 Constr
11、uction. The entrance assembly shall be constructed to assure compliance with the contract configuration baseline and in accordance with the following drawings as applicable (see 6.2.d): Type 1 SM-D-771333/SM-D-771476 Entrance Housing Type II/III SM-D-771434/SM-D-771486 Prism Objective Type IV 500581
12、4 Prism Objective Housing Assembly Assembly Housing Assembly 3.3 First arricle testing (FAT). When specified in the contract (see 6.2.c and 6.2.g) the contractor shall furnish unit(s) for FAT inspection and approval (see 4.2). 2 Copyright Communications - Electronics Command Provided by IHS under li
13、cense with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-PRF-47150D m 0b 2087234 O15 MIL-PRF-49150D (CR) 3.4 Materials. The contractor shall select parts and materials that are fully capable of meeting all of the operational and environmental requirement
14、s specified herein. The materials specified in the applicable drawings are recommended, but not mandatory. Selection criteria of the class, grade or type part shall ensure the material will be able to perform its intended function when it is assembled. Verification of the supplier meeting the overal
15、l performance requirements shall be the governing acceptance standard. Recovered materials shall be used to the maximum extent possible. 3.5 Performance characteristics. 3.5.1 Angular deflection. An optical ray perpendicular to the mounting flange shall be deflected through an angle of 108, k 2 degr
16、ees for Type I and 90, k 2 degrees for Type II, Type III and Type IV. 3.5.2 Resolution. The resolution shall be 7 line- pairs/milliradian or better when rotated I15 degrees about a center 35mm from the mounting flange and a telescope of 8 power (X) or greater with a 30mm aperture is used. The telesc
17、ope may be focused a maximum of 0.03 diopter from infinity for best focus. 3.5.3 Transmission. The transmission shall be 80 percent minimum over the entire aperture in the spectral region defined by a 2854K, f 200K source and an S-20 extended-red (ER) detector. 3.6 Environmental. 3.6.1 Temperature E
18、xtremes. The entrance assembly shall not be damaged nor suffer degradation of performance (3.10.1 and 3.10.4) after being subjected to storage at +68C and -51OC. The entrance assembly shall not be damaged nor suffer degradation of performance (see 3.10.1 and 3.10.4) after being subjected to repetiti
19、ve temperature changes between +23C and -51C within 5 minutes and between +23“C and +68OC within 5 minutes. The soak time at each temperature extreme shall be sufficient for the entire entrance assembly to achieve stabilization at the specified temperature. Time for temperature stabilization is defi
20、ned as the amount of time required for the most internal part of the unit under test to achieve the specified temperature. 3.6.2 Humidity. The entrance assembly shall not be damaged nor suffer degradation of performance after being subjected to +68“C and 94 i4 percent humidity (see 3.10.1 and 3.10.4
21、). 3.6.3 Immersion. The entrance assembly shall not be damaged (see 3.10.1) after being immersed in fresh water to a depth of not less than 3 feet for a period of not less than 30 minutes. The entrance assembly shall be pre-conditioned by exposure to temperature of +45“C k3C for a period of 2 hours
22、prior to being immersed in the fresh water at a temperature of +18C f5C. 3.6.4 Vibration. The entrance assembly shall not be damaged nor suffer degradation of performance (see 3.10.1 and 3.10.4) after being subjected to vibration equivalent to that encountered in tracked vehicles during 5000 miles o
23、f operation. Vibration shall be limited to one sine sweep from 5.0 to 500 Hertz (Hz.) and back to 5.0 Hz 3 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-YSLSOD .II 91999
24、0b 2087235 T5L MIL-PRF-4 915OD (CR) within 15 minutes in the vertical axis only. Vibration shall be performed from 5.0 to 5.5 Hz. at 1 inch displacement, 5.5 to 30 Hz. at 1.5 gs peak, 30 to 50 Hz. at 0.33 inch displacement and 50 to 500 Hz. at 4.2 gs peak. 3.6.5 Shock. 3.6.5.1 Basic shock. The entra
25、nce assembly shall not be damaged nor suffer degradation of performance (see 3.10.1 and 3.10.4) after being subjected to basic shock of.4Ogs (see 3.10.5) with a duration of 18 milliseconds. 3.6.5.2 Weapon shock. The entrance assembly shall not be damaged nor suffer degradation of performance (see 3.
26、10.1 and 3.10.4) after being subjected to simulated weapon firing shock of 1OOgs (see 3.12.5) with a duration of 1.5 milliseconds one half sine pulse. . 3.7 Treatment and painting. Treatment and painting shall be anti-reflective, shall be rust resistant and as specified on applicable drawings unless
27、 otherwise specified in the contract. 3.8 Marking. Marking shall be in accordance with applicable drawings unless otherwise specified in the contract. 3.9 Workmanship. Standards of workmanship shall be such that the entrance assembly will meet all requirements of this specification and any reference
28、d specifications or drawings. 3.10 Technical interpretations. The following technical interpretations are, when referenced in sections 3 or 4, mandatory for this specification. 3.10.1 Damage. Damage is defined as any breakage, loosening, shift, dents, failure of any finish, hardware, connection, or
29、component, or condensation, fogging or moisture on any internal surface. 3.10.2 Ambient temperature. Ambient temperature is defined as +23“C, k 10C. 3.10.3 Environmental temperature. Environmental chamber temperatures shall be controlled to within 2 5OC of the specified temperature unless otherwise
30、specified. I 4 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49L50D E 999990b 2087236 998 E Inspection Angular deflection Resolution Transmission MIL-PRF-49150D (CR) Req
31、uirement Paragraph 3.5.1 3.5.2 3.5.3 . 3.10.4 Degradation of performance. Degradation of performance is defined as failure to operate in accordance with the performance requirements of this specification. For post-environmental test verification, degradation of performance shall be defined as failur
32、e to meet the performance requirements of this specification. 3.10.5 y. “g“ is defined as an acceleration or deceleration of 32.17 feet per second per second. 4. VERIFICATION 4.1 Classification of inspection. Inspection shall be classified as follows: a. First article testing (4.2) . b. Conformance
33、inspection (4.3) 4.2 First article testing. When specified in the contract or purchase order, first article testing shall be performed by the contractor. The quantity of first article test samples shall be as specified in the contract or purchase order (see 6.2.c) and shall be selected from the firs
34、t production lot. 4.2.1 FAT testing. Each entrance assembly in the first production lot shall be subjected to the tests of Table I. After completion of this testing, entrance assemblies selected as samples for FAT testing shall be subjected to the tests of Table II which may be performed in any orde
35、r with the exception that immersion is last. Failure of any test shall be cause for rejection of that entrance assembly and may be cause for rejection of the FAT. TABLE I. Unit first article testing. Table II Sample first article testing. I I Requirement 1 Inspection I Paragraph Temperature Extremes
36、 I 3.6.1 I Hum; dit y immersion Vibration 3.6.2 3.6.3 3.6.4 4.2.2.1 Disposition of FAT samples. Disposition of FAT samples shall be as specified in the contract or purchase order. 4.3 Conformance inspection. Requirements for conformance inspection shall be as specified in the contract or purchase or
37、der (see 6.2.f). Unless otherwise specified all tests shall be performed at ambient temperature (see 3.12.2). 5 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49150D m 99
38、79906 2087237 824 m MIL-PRF-49150D (CR) I 5. PACKAGING 5.1 Packaging. For acquisition purposes, the packaging requirement shall be as specified in the contract or purchase order (see 6.2.h). When actual packaging is to be performed by DoD personnel, these personnel need to contact the responsible pa
39、ckaging activity to ascertain requisite packaging requirements. Packaging requirements are maintained by the Inventory Control Points packaging activity within the Military Department of Defense Agency, or within the Military Departments Syste? Command. Packaging data retrieval is available from the
40、 managing Military Departments or Defense Agencys automated packaging files, CD-ROM products, or by contacting the responsible packaging activity. 6. NOTES (This section contains information of a general or.explanatory nature that may be helpful, but is not mandatory.) 6.1 Intended use. The entrance
41、 assembly is used with the AN/VVS-S(V) for drivers viewing during periods of darkness. 6.2 Acquisition requirements. Acquisition documents must a. Title, number and date of this specification. b. Necessary actions by contractor in the event of a lot c. Quantity and schedule for First Arcicle testing
42、 for all d. Type of entrance assembly (see 3.2). e. Issue of DODISS to be cited in the solicitation, and if specify the following: failure. line items and disposition of FAT samples. required, the specific issue of individual documents referenced (see 2.1.1 and 2.2). f. Statement identifying that th
43、e contractor must submit his proposal for conformance inspection to include specific requirements to be verified and the sampling plan to be used to provide the desired cofifidence level. required. g. Statement specifying that FAT testing is, or is not, h. Packaging requirements. i. Statement specif
44、ying that Coated Optical Component coating is, or is not, required. 6.3 Definitions. See 3.10. 6 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49150D 999990b 2087238 7h
45、b MIL-PRF-49150D (CR) 6.4 Subject term (key word) listing. Angular deflection Resolution Transmission 6.5 Changes from previous issue. Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extensive changes. Custodian: Army - CR Preparing Activity: Army - CR Project 5855-0093 7 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
