1、% -_ 4. t MIL-P-b3332 12 777770b 03Y475 5 m - 5/3 743 MIL-P -63 33 2 ( AR) 15 February 1980 MILITARY SPECIFICATION PERISCOPES, TANK: M44AlE1 AND M44A2E1, 11834842 This specification is approved for use by the U.S. Army Armament Research and Development Camnand and is available for use by all Departm
2、ents and Agen- cies of the Department of Defense. 1. SCOPE 1.1 This specification covers the performance requirements, related quality assurance provisions, and packaging data for the Periscopes: M44AlEl and M44A2E1. power passive (low light level) sighting system The periscopes are equipped with a
3、reticle projector which projects the image of a reticle pattern into the sighting system. The periscopes provide a unity-power viewing system and a nine 2. APPLICABLE DOCUMENTS 2.1 The following documents, of the issue in effect on date of invitation for bids or request for proposals, form a part of
4、 this specification to the extent specified herein. SPEC IF1 CATIONS Mil i tar y MIL -F -1 39 2 6 MIL -P - 142 3 2 MIL-1-4560 7 MIL-1-55340 STANDARDS Mil it ar y MIL-STD-105 MIL -STD- 1 O9 MIL-STD- 150 MIL-STD-202 MIL-STD-810 Fire Control Material: the Manufacture and Inspection of Parts , Equipment
5、 and Tools for Army Material, Packaging and Packing of Inspection Equipment, Acquisition and Disposition of Image Intensifier Tube Assembly, 25MM General Specification Governing Sampling Procedures and Tables for Inspection by Quality Assurance Terms and Definitions Photographic Lens es Test Methods
6、 for Electronic and Electrical Cmponent Environmental Test Methods At tributes Parts Beneficial commenta (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, US Army Armament Research and Development Command,
7、 Attn. DRDAR-QA, Dover, New Jersey 07801 by using the self-addressed Standardization Document Improvement PrcJposal (DD Form n26) appearingat the f his document or by letter. FSC 1249 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-b3332 12 m 7
8、797906 03Liq7b 7 m MIL-P-63332 (AR) DRAWINGS US Army Armament Research and Development Command (ARRADCOM) F10542204 Head Assembly 10558203 See para 3.16.1 and 3.16.2 11834841 See para 3.16.1 and 3.16.2 11 834833 See para 3.16.1 and 3.16.2 11 834842 Periscope, Tank: M44AlE1 and M44A2E1 F8565556 Press
9、ure Tester-Two Station F 11 7381 78 F11738179 F 11 7381 84 F 11 834835 Mount Assembly F11746430 Cable Assembly Gage - Interchangeability - Maximum Gage - Interchangeabi 1 i ty - Minimum Fixture - Interchangeability - Presure Testing PACKAGING DATA SHEETS PS 11834842-1 Packaging of Periscope: M44AlE1
10、 PS 11834842-2 Packaging of Periscope: M44A2E1 (Copies of specifications, standards, drawings and packaging data sheets required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting off i c er. ) 3. R EQU IR E
11、MENTS 3.1 Fabrication. The periscope shall be manufactured in accordance with the applicable drawing pertaining thereto (see 2.1). 3.2 Image intensifier tube, The image intsensifier tube shall conform to MIL-1-55340 (see 3.11.1). 3.3 Temperature conditions. Except as specified in 3.6 and 3.7 the fol
12、lowing requirements shall be met at a temperature between +600 and +90F. 3.4 General specification. The requirements of MIL-F-13926 listed below shall be met wherever applicable. a. Order of precedence. b. Dimensions and tolerances. c. Inorganic protective surface finishes. d. Part identification an
13、d marking. e. Sol der i ng el ec tr i cal connecti on s. 3.5 Workmanship, The workmanship requirements of MIL-F-13926 shall be met. The exterior protective surface finishes shall be free of voids which may affect their protective qualities or appearance. Optical surfaces shall be free of scratches a
14、nd blemishes which may affect their optical qualities or appear an ce. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-63332 i12 W 7979906 03LiALi77 7 m MIL-P-63332( AR) 3.6 Extreme storage temperatures. There shall be no evidence of physical
15、 failure such as glass breakage and bonding or casting failure due to storage - - to temperatures ranging from-800 to +1600F. 3.7 Extreme operating temperature. The periscope shall meet the applic- able requirements of 3.12.1 and 3.12.2 while exposed to and thermally stabi- lized at -650 and +1500F.
16、 Y 3.8 I- Vibration. This requirement shall be met with: a. The periscope assembled to its mount assembly. b, The image tube, and the reticle projector lamp energized using c. A line of sight established prior to vibration. d. The clear filter positioned in the optical train. 6.5 +.25 volts dc. The
17、periscope shall be vibrated successively along three (3) mutually perpen- dicular axes, Vibration shall be a simple harmonic motion, the fresuency varying either linearly or logarithmically from 5 to 55 to 5 CPS in five minute cycles for a total of 15 minutes along each of the axes. The amplitude of
18、 vibration shall be maintained constant at 1/64 inch (1/32 inch total excur- sion). The vibration test shall not cause: e. Failure or flicker of light emission from the reticle projector f. Evidence of physical failure during and subsequent to vibration. g. The established line of sight to deviate m
19、ore than 0.30 mil lamp, and image tube during vibration. subsequent to vibration. 3.9 Dielectric strength. This requirement shall be met with the image -.- tube and the reticle projector lamp renoved from their receptacles. Insula- tion resistance between ungrounded circuits, isolated circuits, and
20、castings shall be not less than 10 megohms at a potential of 100 Vdc. 3.10 Optical characteristics with image tube removed. Unless otherwise -I- -.-.- specified the requirements 3.10.1 through 3.10.6 inclusive shall be met with: a. The image tube removed from the periscope. b. The periscope assembly
21、 to its mount assembly c. The clear filter positioned in the optical train. 3.10.1 Contrast transfer. The contrast transfer for vertical lines and for horizontal linesshall be not less than the values specified in 3.10.1.1 and 3.10.1.2. 3.10.1.1 Objective system. The following values (for the axis s
22、pecified) shall be met with 28700 ;r 1000 Kelvin (K) radiance, modulated at the spa- cial frequency (angular spacing) indicated, incident to the entrance window and the contrast values obtained at the objective system focal plane. On axis is defined as the geometric axis of Sleeve Assy 10542215. 3 P
23、rovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-b3332 12 m 477770b 0348478 O m MIL -P-6 3 3 3 2 ( AR ) Off axis is defined as displacement, conforming to the value specified, from on axis. ANGULAR SPACING (in line ,pairs/milliradian) a. On axis.
24、 -_CI. - - O. 58 1.732 3.70 b. Off axis 0.3 inch. O. 58 1.732 3.70 CONTRAST TRANSFER Vertical lines Horizontal li= - .95 .91 .84 .93 .88 .78 .95 .91 .84 .93 .88 .78 3.10.1.2 Eyepiece and erecting system. The following values (for the -_l_-pl_l_-_l_. axis specified) shall be met with 28700 + 1000 Kel
25、vin (K) radiance, modu- lated at the special frequency (angular spacing) indicated, incident to the exit pupil of the eyepiece and erecting system and the contrast transfer values obtained at the focal plane. ANGULAR SPACING (in line pairs/milliradian) -. -_-_I- a. On axis. - O. 58 1.732 3.70 b. Off
26、 axis 0.3 inch. - O. 58 1.732 3.70 CONTRAST TRANSFER Ho ri zontal lines - Vertical lines - .95 .92 .81 .95 .92 .77 .95 .92 .81 .95 .92 .77 3.10.2 Luminous - transmittance. The requirements of 3.10.2.1 and 3.10.2.2 shall be met with a source of rediance at the focal plane of the system speci- f ied .
27、 3.10.2.1 Objective system. II - a. Luminous transmittance. Luminous transmittance shall be not less - than 58% when observed through any area of the entrance pupil of the periscope. b. Transmittance at 0.85 micron. Transmittance at 0.85 micron shall be not less than 35%. 4 h Provided by IHSNot for
28、ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-63332 12 = 9777906 0348477 2 MIL-P-63332( AR) 3.10.2.2 Eyepiece and erecting cystem. This requirement shall be met when observing through the periscope exit pupil. Luminous transmittance shall be not less than 60%. - _I
29、_- a 3.10.3 Head assembly, The following requirements shall be met with the body assemblyremoved from its mount. 1 a. Luminous transmittance. Luminous transmittance shall be not less The source of radiance shall be at the exit aperture of the head C_-.- than 90%. assembly and the observation made at
30、 the entrance aperture. b. Resolution. Resolution shall be 2.0 seconds of arc or less when observing with a telescope of at least 90 power. The entrance pupil of the telescope shall be not less than 7.0 inches. Resolution shall be as observed at one focus setting of the telescope. 3.10.4 Resolution-
31、 periscope - objective system. The requirements of 3.11.4.1 and 3.11.4.2 shall be met with the specified line pairs per milli- meter positioned at, and projected from the focal plane of the objective sys- tem. -_1 3.10.4.1 I- On-axis. The objective system shall resolve 200 line pairs per millimeter
32、off-axis 0.35 inch. 3.10.4.2 Off-axis 0.35 -_-I- inch. The objective system shall resolve 200 line pairs per millceter off-axis 0.35 inch. a 3.10.5 Objective - T number. The requirements of 3.10.5.1 and 3.10.5.2 shall be met with the source of radiance at the focal plane of the objective system. T n
33、umber is defined as the (ratio of focal length to equivalent D diameter) of an idealized circular lens which: a. Has no obscuration or transmission loss. b. Has the equivalent focal length of the system in question. c. Delivers the same irradiance.at the focal plane as the system in question. 3.10.5
34、.1 On-axis. The T number of the objective system shall be not more -L- than 2.74 as observed on-axis. 3.10.5.2 Off-axis 0.35 inch. - The T number of the objective system shall - not be more than 3.20 as observed off-axis 0.35 inch. 3.10.6 Resolution - unity power system. Resolution of the unit power
35、 I- system shall be 1.0 minute or less of arc when observed through any area of the exit pupil with a 3 power telescope having a 0.50 inch aperture. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-63332 12 7737706 034YO 7 lsl M IL - P - 6 3 3 3
36、 2 ( AR ) 3.11 Optical characteristics, with image tube installed. Unless other- wise spec i.i nc 1 usi ve shall be met with: a. The image tube installed in the periscope (see 3.11.1). b. The periscope assembled to its mount assembly. c. The clear filter positioned in the optical train. d. The image
37、 tube, through the high voltage oscillator, and the reticle projector lamp energized (using 6.5 +.25 volts dc.) 3.11.1 Image intensifier tube, -government furnished. When the image intensifier tube is projlaed by the government each tube shall be subjected to verification by the contractor-for the f
38、ol lowing requirements prior to inser- tion into the periscope. 3.11.1.1 Physical defects. The image tube shall show no evidence of external or internal damage such as chips, digs, scratches, loose parts and other surface defects to fiber optics, glass and metal. shall not contain pits, scratches or
39、 other surface defects in excess of tolerances specified in MIL-1-55340. The energized screen 3.11.1.2 Operational defects. - the image intensifier tube, there shall be no internal shorting, cathode flut- tering or change in intensity nor bright or dark areas which could result in rejection of a com
40、plete periscope. With an input voltage of 6.5 + .25 Vdc to 3.11.1.3 Luminance gain. - Luminance gain shall meet the requirements of MIL-1-55340. 3.11.1.4 Center resolution. Center resolution shall meet the require- ments of MIL-I=. 3.11.1.5 - Image alinement. - Image alinement shall meet the require
41、ments of MIL-1-55340. 3.11.2 Cleanliness. 3.11.2.1 Head assembly. There shall be no visible evidence of conden- sates grease, fingerprints, and fractures when viewing the glass components by transmitting light from either end. In addition, the total number of dirt (or foreign) particles on the glass
42、 surface (combined) shall not exceed four (4) when viewing from either end. 0.025 inches. The maximum dimension of any particle shall be 3.11.2.2 Unity power system - body assembly. There shall be no visible evidence of condensates, grease, fingerprints or fractures when viewing the glass components
43、, by transmitted light from either end. total number of dirt (or foreign) particles on the glass surfaces (combined) shall not exceed six (6) when viewing from the eye end. The maximum dimension of any particle shall be 0.025 inches. In addition, the 4 6 Provided by IHSNot for ResaleNo reproduction
44、or networking permitted without license from IHS-,-,-RESOLUTION TARGET Background Contrast (density RESOLUTION - OFF axis Luminance difference between 2. o black and clear) On axis p egre es. 3.11.2.3 Nine power system. a. With the tube installed there shall be no more than six (6) particles of dirt
45、 (or foreign matter) appearing on the screen image when viewing from the eyepiece end of the periscope. sion of any particle shall not exceed the reticle line width. the minimum separation between particles shall represent 10 mils in object space. (Excluding the image tube surface.) The maximum appa
46、rent dimen- In addition, b. With the image tube removed and a light source inserted in the tube cavity, there shall be not evidence of condensates, grease, fingerprints, fractures or adhesive separations when viewing the glass components from the objective and eyepiece end of the periscope. In addit
47、ion, when viewing from the objective end, the total number of dirt (or foreign) particles on the glass surfaces (combined) shall not exceed four (4). The maximum apparent dimension of any particle shall be 0.025 inches. 3.11.3 Resolution - nine power system, The nine power system shall be - capable
48、of resolving the following values (for the axis specified when obser- ving a resolution target having the background luminance in foot lamberts (ft-i) and the contrast specified. Contrast (for the purpose of this require- ment) is defined as the difference in density between the dark lines and the l
49、ight background. 1.5 x 102ft-1 High 1.0 or greater .65R .65R Low 0.20 + 0.5 .17R 6 x lO5ft-l - RT is the minimum on axis resolution requirement for the image intensifier tube. The mandatory functional requirements of the Image Intensifier Assembly type 785411 are specified in MIL-1-55340. 3.11.4 Contrast transfer. The following values (for the axis specified) shall be metwith 28700
