1、MIL-P-445LA 12 7997706 0320565 7 MIL-P-48451A(MU) 31 December 1975 SUPERSEDING 25 January 1974 MIL-P-48451 (MU) MILITARY SPECIFICATION PERISCOPE, TANK: M36E1 This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 This specification covers on
2、e type of combination passive - day- light tank commanders periscope designated Periscope, Tank: M36E1. The periscope is a part of the fire control system in the 105MM Gun Tank, M60 Series and is used for observation and machine gun sighting. 2, APPLICABLE DOCUMENTS 2.1 The following documents, of t
3、he issue in effect on date of invi- tation for bids or request for proposal, form a part of this specification to the extent specified herein. SPECIFICATIONS Military MIL-F- 139 2 6 MIL-P-14232 MIL-B-14837 MIL-H-14844 MIL-1-45607 MIL-E-484 41 STANDARDS Military MIL-STD-105 MIL-STD-109 Fire Control M
4、ateriel, General Speci- f ication Governing the Manufacture and Inspection of Parts, Equipment and Tools for Army Material, Packaging and Packing of Body (Daylight) Assembly: 8619920 Head Assembly: 8619900 Inspection Equipment, Acquisition, Elbow Assembly, Passive: 11733401 Maintenance and Dispositi
5、on of Sampling Procedures and Tables for Quality Assurance Terns and Definitions Inspection by Attributes FSC 1240 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIIrP-4 8 4 5lA (MU) DRAWINGS U.S. Amy, Frankford Arsenal (28591108 F11727460 F11732167
6、 FU732168 FU746743 Torque Adapter, Elevation Input Arm Periscope, Tank: M36E1 Gage, Interchangeability, Maximum Gage, Interchangeability, Minimuni Final Acceptance Inspection Test Equipment and Arrangement Drawing PACKAGING DATA SHEET PS11727460 Packaging of Periscope, Tank: M36E1 (Copies of specifi
7、cations, 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 officer.) 3. REQUIREMENTS 3.1 Fabrication.- The periscope shall be manufactured in accordanc
8、e with Drawing F11727460 and drawings pertaining thereto. shall have met their respective specifications (except that they need not be subjected to separate temperature and vibration tests) and be in- terchangeable within the requirements of this specification. The following Body (Daylight Assembly
9、8619920 Head Assembly 8619900 Elbow Assembly, Passive 11733401 MIL-B-14837 MIL-H-14844 MIL-E- 4 844 1 3.2 Interchangeability. a. Modules.- The periscope shall meet the requirements of 3.8.2, 3.8.5, 3-8.6 and 3.8.8 without need for realignment of components or se- lection of modules listed in 3.1. he
10、rein, are prohibited, Adjustments, other than those specified b. Periscope with mount.- The periscope shall be capable of After insertion, the periscope shall be capable of insertion into the Mount Periscope: Ml19 (gages are specified in lieu of mount in 4.6.7.2). being firmly secured and subsequent
11、ly removed. 3.3 General specification.- The contractor shall be responsible for adherence to, and compliance with the following requirements of MIL-F-13926. a. Order of precedence b. Dimensions and tolerances ci Inorganic protective surface finishes d. Part identification and marking e. Workmanship
12、2 D - . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-P-Lt8451A 12 m 7777706 0320567 2 m 3.4 Environmental. 3.4.1 Storage temperature.- The periscope shall show no evidence of cement separation, glass breakage or other physical failure, and sh
13、all meet all the requirements of this specification at standard ambient temperature, plus 60“ to plus 90“ Fahrenheit (F), after having been exposed and ther- mally stabilized at temperatures of minus 80“ and plus 160F. 3.4.2 Operating temperatures.- The periscope shall meet the applicable requiremen
14、ts of 3.5 while exposed and thermally stabilized at temperatures of minus 40“ and plus 150F. 3.5 Operability. 3.5.1 Elevation input shaft.- The running torque required to rotate the elevation input shaft through maximum elevation and depression, shall not exceed 10 pound-inches (lb-ins) at standard
15、ambient temperature or 13 lb-ins at extreme temperatures of minus 40“ and plus 150F. 3.5.2 Diopter movement- Daylight and Passive.- The running torque required to rotate the daylight diopter movement through a minimum range of minus 3.0 to plus 3.0 diopters and the passive diopter movement through a
16、 minimum range of minus 4.0.to plus 4.0 diopters shall be within the limits of 1.5 and 6.0 lb-ins when checked at standard ambient temperature. checked at the temperature conditions specified in 3.4.2, the running torque shall not exceed 15 lb-ins. When 3.5.3 Focusing mechanism - Passive.- The runni
17、ng torque required to rotate Ring 11733436 through the range specified in 3.8.7 shall be within the limits of 4.0 and 14.0 lb-ins when checked at standard ambient tempera- ture. When checked at the temperature conditions specified in 3.4.2, the running torque shall not exceed 24.0 lb-ins. 3.5.4 Dise
18、ngagement of boresight knob locks - Daylight and Passive.- The direct force required to disengage each boresight knob from the lock position shall be within the limits of 2.0 to 5.0 pounds (lbs) when checked at standard ambient temperature. When checked at the temperature condi- tions specified in 3
19、.4.2, the direct force shall not exceed 9.0 lbs. 3.5.5 Rotation of boresight knobs - Daylight and Passive.- The runn- ing torque required to rotate each boresight knob through the travel range specified in 3.8.3.1.1 and 3.8.3.1.2 respectively, shall be within the limits of 0.5 and 5.0 lb-ins when ch
20、ecked at standard ambient temperature. When checked at the temperature conditions specified in 3.4.2 the running torque shall not exceed 8.0 lb-ins. 3.5.6 Shutter lever and on-off switch - Passive.- The torque required to rotate the shutter lever from the off to on position shall be within the limit
21、s of 4.5 to 6.5 lb-ins when checked at standard ambient temperature. When checked at temperature conditions specified in 3.4.2, the torque shall not exceed 10 lb-ins. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.5.7 Gain adjust and reticle bri
22、ghtness control - Passive.- This requirement shall be met at standard ambient temperature and the tempera- ture conditions specified in 3.4.2. operable through the full limits of the rheostat. Knobs MS 91528-OE1B shall be manually 3.6 Vibration.- This requirement shall be met with the image inten- s
23、ifier tube and reticle projector lamp energized by the application of +24 -i- 6.0 MC to Contact 11733497 (Reference Drawing F11733401). The periscope shall be vibrated in a vertical plane at a constant frequency of 30 cycles per second (cps) with an amplitude of 1/6 inch (1/8 inch totalexcursion) fo
24、r a period of 5 minutes plus or minus 15 seconds. There shall be no failure or flicker of light emission from the image intensifier tube nor the reticle projector lamp during vibration and the periscope shall show no evidence of physical failure subsequent to vibra- tion. Following the vibration tes
25、t the periscope shall meet the require- ments of 3.8.3.2, 3.8.4.1, 3.8.4.2, 3.8.9, 3.8.2, 3.8.3.1.1, 3.8.3.1.2, 3.8.5, 3.8.6, 3.8.7, 3.8.8, 3.2, 3.1, 3.7 and then each module (see 3.1) shall meet their own respective post-vibration test requirements. 3.7 Cleanliness.- With the periscope disassembled
26、, the three modular units shall meet the following requirements. a. Defects.- There shall be no evidence of moisture, grease, finger prints, condensates, fractures, and adhesive separations on any glass component when viewing through either end of eachmodule (including the unity power system). b. Di
27、rt. (1) Body assembly (dayliRht).- When viewed through the eye- 5 piece, there shall be no more than three dirt particles appearing within a 50 mil diameter central field of view. three dirt particles appearing outside the specified field of view. The angular separation between dirt particles shall
28、be at least 15 mils. Dirt particles smaller than.l/4 reticle line width shall be ignored re- gardless of distribution. apparent width of the reticle line. There shall be no more than The size of any particle shall not exceed the (2) Elbow assembly (passive).- When viewing through the eyepiece with t
29、he image intensifier tube energized, there shall be rio more than five particles visible on the screen surface, particle shall not exceed the apparent width of the reticle line. The size of any (3) Head assembly.- There shall be no more than three par- ticles of dirt or foreign material (classed as
30、dirt) on any glass component, The size of any dirt particle shall not exceed 0.05 inch. c 4 3.8 Performance. 3.8.1 0rientation.- *- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-4451A 12 = 9977706 0320567 b = a. Datum Plane “B“ (Reference Dra
31、wing F8619900) shall lie in a vertical plane. Datum Plane “A“ (Reference Drawing F8619900) shall be in a horizontal plane. b. Elevation input arm shall be positioned as indicated on Draw- ing F8619900. NOTE: allowed to strike hard against Echeir respective stop pins. At no time shall the Am. Assembl
32、y 8635116 and Arm 8619845 be c. The requirements of 3.8.3.1 to 3.8.3.2 inclusive, shall be met with: (1) The eyepiece of the daylight system focused on the re- ticle. (2) The eyepiece of the passive system focused on the screen of the image intensifier tube. (3) A 1200 meter target provided for both
33、 the daylight and passive systems. d. Focus passive elbow assembly by rotating objective focusing Ring 11733436 for best resolution of target (1200 meters) image. 3.8.2 Parallax.- Parallax between the reticle and the image of a target at 1200 meters shall not exceed 0.2 mil. 3.8.3 Collimation.- Thes
34、e requirements shall be met prior to meeting the requirements of 3.6. a. mil to Datum Plane “E“. An incident line of sight which is perpendicular within 0.2 b. The elevation input arm positioned in accordance with Draw- ing F8619900. 3.8.3.1 Pre-vibration setting.- Rotate daylight and passive bore-
35、sight knobs to establish coincidence of each boresight cross with the in- coming line of sight (see 3.8.3a) prior to meeting requirements of 3.6. 3.8.3.1.1 Daylight viewing area. a. Elevation knob travel.- The boresight knob shall provide a minimum travel of 5.0 mils up and 8.0 mils down from the co
36、llimation sett- ing of 3.8.3a. b. Deflection knob travel.- The boresight knob shall provide a minimum travel of 6.5 mils in each direction from the collimated sett- ing of 3.8.3a. 5 . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-YY51A 12 = 7
37、777906 0320570 2 - . ci Line of sight variation,- Variation in the line of sight in elevation, as the deflection knob is rotated by at least 6.5 mils in each direction from the collimated setting of 3.8-.3a, shall not exceed 0.1 mil (total variation not to exceed 0.2 mil). 3.8.3.1.2 Passive viewing
38、area. a. Elevation knob travel.- The boresight knob shall provide a minimum travel of 6.5 mils in elevation and depression from the colli- mated setting of 3.8.3a. b. Deflection knob travel.- The boresight knob shall provide a minimum travel of .6.5 mils in each direction from the collimated setting
39、 of 3.8.3a. c. Line of sight variation.- Variation in the line of sight in elevation, as the.deflection knob is rotated by at least 6.5 mils in each direction from the collimated setting of 3.8.3a shall not exceed 0.3 mil (total variation not to exceed 0.6 mil). 3.8.3.2 Post vibration collimation.-
40、The original collimation settings established in 3.8.3.1 shall not deviate more than 0.3 mil (including fixture error) as observed through eyepiece subsequent to meeting requirements of 3.6. 3.8.4 Collimation repeatability. 3.8.4.1 Assembling daylight body to head assembly.- The daylight body assemb
41、ly shall be capable of repeating an original line of sight within 0.20 mil when removed and reinstalled (a minimum of 3 times) into the head assembly. 3.8.4.2 Assembling passive elbow to daylight body/head assembly.- The passive elbow assembly shall be capable of repeating an original line of sight
42、within 0.20 mil when removed and reinstalled (a minimum of 3 times) into the combination daylight body and head assembly. 3.8.5 Image tilt - daylight and pssive.- The image of a target line which is originally parallel to the intersection of Datum Planes “A“ and “B“ shall emerge parallel to this sam
43、e intersection within 2.0 degrees of arc. 3.8.6 Parallelism of reticle and image - daylight and passive.- A line originally parallel to the intersection of Datum Plane “A“ and “B“ shall be parallel to the horizontal reticle line within 2.0 degrees of arc. . d 3.8.7 Objective focusing range - passive
44、.- -Rotation of Ring 11733436 shall cause the objective to bring targets from 50 meters to 3000 meters into focus. 3.8.8 Resolution. - 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-P-9951A 12 9999906 0320571 4 M MIL-P-4845 1A (MU) 3.8.8.1 Da
45、ylight.- The resolution shall be 10 seconds of arc or less in all four meridians. shall not exceed 0.25 diopter, Eyepiece focus shift between any two meridians 3.8.8.2 Passive.- The resolution shall be one minute of arc or less Eyepiece focus shift between the meridians shall not in two meridians. e
46、xceed 0.25 diopter. 3.8.9 Electrical characteristics - passive. 3.8.9.1 Image intensifier tube.- The image intensifier tube shall be energized by the application.of +24 2 6.0 VDC to Contact 11733497 or application of 3 MC 5 0.3 VDC to Connector 11733493 (Ref. Dwg. F11733401). 3,8.9.2 Image steadines
47、s.- There shall be no visible flicker, no movement of the image nor audible sparking when observed for one minute. This observation shall be made after -the expiration of 15 seconds tube stabilization time. 3.8.9.3 Reticle brightness.- with a minimum of 18 and a maximum of 30 volts applied to the Co
48、ntact 11733497 the reticle markings shall be visible when viewing through the eyepiece with the Image intensifier tube energized (see 3.8.9.1). The reticle brightness shall be adjustable from off to full bright by adjusting the reticle brightness control Knob MS91528- OE1B clockwise. 3.8.9.4 On-Off
49、Switch.- The image intensifier tube shall shut down when +24 VDC 2 6 VDC is removed from Contact 11733497 with the on-off switch . in the on position. 24 VDC unless the on-off switch is recycled from off to on. The tube shall not be energized by reapplication of the 4, QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection.- Unless otherwise specified in the contract or purchase order, the supplier is responsible for the per- formance of a
