1、MIL-T-60895 (MU) 19 April 1968 MILITARY SPECIFICATION ! TELESCOPE, PANORAMIC: M117A1 1. SCOPE 1.1 This specification covers the Panoramic Telescope, M117A1 which _- . - employs a counter mechanism. _. . i. I I_ -_ 2. APPLICABLE DOCUMENTS I .a .2,1 The following documents, of the issue in effect on d
2、ate of invitation for bids or request for proposal, form a part of this specifi- cation to the extent specified herein. SPECIFICATIONS Mil it ar y MIL-o- 1: ,x Optical Components for Fire Control Instruments; General Specification Governing the Manufacture and Inspcton of Fire Control Materiel; Gene
3、ral Specifi- cation Governing the Manufacture and Inspection of Parts, Equipment and Tools for Ordnance Materiel; Packaging of Inspection Equipment, Supply and Maintenance of ML-F-13926 . , .I MIL-P-14232 WIT,- 145607 - STANDES Mi 1 i tar y MIL-STD-105 Sampling Procedure and Tables for MIL-STD-109 .
4、 Quality Assurance Terms and Definitions MIL-STD- 202 Test Methods for Electronic and Electrical Inspection by Attributes Component Parts DRAWINGS U,S. Amy, Frankford Arsenal - .- I. , P7560400 -. Telescope, Panoramic Provided by IHSNot for ResaleNo reproduction or networking permitted without licen
5、se from IHS-,-,-d MIL-T-bO75 12 = 77779Ob 0391719 2 MIL-T- 60895 (MU) PACKAGING DATA SHEET 105559 74 Packaging of Telescope, Panoramic: M117A1 (Copies of specifications, standards, drawings and packaging data sheets required by suppliers in connection with specific procurement functions should be ob
6、tained from the procuring activity or as directed by the contracting officer.) 3. REQUIREMENTS 3.1 Fabrication,- The telescope shall be manufactured in accordance with Drawing F7660400 and drawings pertaining thereto. 3.2 .General specification.- The contractor shall be responsible for adherence to
7、and compliance with the requirements of Specification MIL-F-13926 specified below. tion and this specification, this specification shall take precedence. Should any conflict exist between the general specifica- (a) Order of precedence. (b) Dimensions and tolerances. (c) Inorganic protective surface
8、finishes. (d) Electrical and electronic assemblies. (e) Part identification and marking. ( f) Workmanship, 3.3 Environmental. 3.3.1 Storage temperatures.- The telescope shall show no evidence of physical failure or damage subsequent to being exposed to and thermally stabilized at -80“ and +160F. 3.3
9、.2 Extreme operating temperatures.- The telescope shall meet the applicable requirements of 3.8.2.6 and 3.9 while exposed to and thermally stabilized at -40“ and +150F. 3.3.3 Standard temperature.- Unless otherwise specified, the tele- scope shall meet the following requirements while exposed to and
10、 thermally stabilized at a temperature between 60“ and 90F. 3.3.4 Vibration.- The telescope shall show no evidence of physical failure or damage and shall meet the following requirements, except 3.7.1.1, after being subjected to a vibration of 30 I: 5 cycles per second at an amplitude of 1/16 inch,
11、1/8 f 1/64 inch total excursion, for a period of 5 minutes i 5 seconds (see 3.7.1.1). 3.4 Sealing. 3.4.1 Pressure (optical system),- The entire interior area of the optical assembly shall be capable of withstanding an internal pressure of 5 f 0.10 pounds per square inch (psi) for a period of 5 minut
12、es with no evidence of leakage, _I - 1 2. - -. _ . . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-60895 12 3999706 03Lt1920 9 W MIL-T-60895 (Mu) 3.4.2 Pressure (counterbox area),- Apply an internal pressure of 2.0 + .25 pounds per square inc
13、h (psi) of dry nitrogen for a period of 3 minutes to each telescope. There shall be no evidence of leakage, 3.5 Cleanliness.- The telescope shall meet the cleanliness requirements of Specification MIL-0-13830 and there shall be no more than 2 particles of dirt visible on the reticle. excess of the a
14、rea equivalent to a size 10 dig. on other surfaces which interferes with observation or adversely affects image quality, The area of each particle shall not be in There shall be no dirt 3.6 Orientation The requirements of 3.7 to 3.8.3.3.2 inclusive shall be met with the telescope orientated in the f
15、ollowing position: (a) (b) (c) (d) (e) (f) The main telescope tube vertical as determined by the keys on each side. The reset counter indicating 3200 mils and the azimuth counter set at O000 (Black). The gunners aid counters set at zero. The line of sight horizontal. The elbow assembly centered betw
16、een the swing stops within 2“. Knob 8587442 indicating INDIRECT (out of detent). 3.7 Accuracy. 3.7.1 Collimation. 3.7,l.l Pre-vibration.- Prior to meeting the requirements of 3.3.4, the line of sight shall be perpendicular to the locating keyways within 5.0 mils, 3.7.1.2 Post-vibration.- Subsequent
17、to meeting the requirements of 3.3.4, the line of sight shall remain within 0.25 mil of the azimuth position established in 3.7.1.1. 3.7.2 Image tilt.- When checked at 1600 mil increments in azimuth through two full revolutions in each direction, the image of a vertical target line shall be vertical
18、 within one degree of arc. This requirement shall also be met with the elbow assembly positioned against each of the swing stops, 3.7.3 Parallelism of.retcle and image.- When checked at 1600 mil increments in azimuth through two full revolutions in each direction, the vertical reticleline shall be p
19、arallel to the image of a vertical target line within 30 minutes of arc. the elbow assembly positioned against each of the swing stops at each azimuth setting. This requirement shall also be met with .3,7.4 the limits of -0.75 and -1.0 diopter. Eyepiece focus.- The eyepiece focus shall be fixed betw
20、een Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T- 60895 (MU) 3.7.5 Parallax.- Parallax in the center of the field shall not exceed 0.1 mil when viewing a target at 80 meters f 1.0 meter. 3.7.6 Resolution.- Resolution on the optical axis shal
21、l be 10.0 seconds of arc or less when using an auxiliary telescope of at least 3 power having an entrance pupil of at least 0.4 inch. Resolution shall consist of detectable line structure and proper line count in all four meridians. Variation in focus between meridians shall not exceed 0.25 diop- te
22、rs as measured at the telescope eyepiece. 3.7.7 Reticle accuracy.- The angle formed by the graduations at the outer extremity of the reticle shall be within 0.25 mil of the value indicated on the reticle drawing. 3.8 Performance. 3.8.1 Elevation mechanism 3.8.1.1 Excursion range.- Rotation of the el
23、evation knob shall cause the line of sight to elevate and depress a minimum of 300 mils from the position specified in 3.6(d). 3.8.1.2 Plumb travel.- With the line of sight in coincidence with a vertical target line, the line of sight shall track the target within 0.5 mil when elevated 300 mils, dep
24、ressed to 300 mils, then elevated to zero elevation. 3.8.2 Azimuth mechanism. 3.8.2.1 Azimuth error.- Error at azimuth readings, taken in 800 mil increments through two full revolutions shall not exceed 1.0 mil excluding back1 as h. 3.8.2.2 Deflection error.- Rotating the gunners aid knob to indicat
25、e 15 mils followed by rotation of the azumuth knob in the opposite direction (with backlash removed) to deflect the line of sight 15 mils shall cause the reset counter to return to within 0.3 mil of the original setting, This requirement shall be met with the 15 mil value set into each scale and the
26、 azimuth counter indicating O000 (Black), 1600 (Black) 0000 (Red) and 1600 mils (Red) at the start of each reading. 3.8.2.3 Backlash.- Backlash in the azimuth mchanism shall not exceed 1.0 mil when read on the azimuth counter; 1.5 mils when read on the reset counter. 3.8.2.4 Level travel,- Starting
27、with the line of sight in coincidence with a horizontal target, the line of sight shall track the target within 6.0 mils (total excursion) when rotated through two full revolutions. 3.8.2.5 Lift.- Vertical displacement of the line of sight due to reversing rotation by means of the azimuth knob shall
28、 not exceed 1.0 mil. 4. . . *%.,i -3 . . - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-T-60875 12 7779706 0341722 2 MIL-T- 60895() 3.8.2.6 Five mil click lead mechanism.- Positioning Knob 8587442 to indicate DIRECT shall cause a detent action
29、 to be felt when introducing 5.0 .r: 0.5 mil increment changes into the azimuth counter. ment shall be met at standard and extreme operating temperatures. This require- 3.8.3 Counter mechanisms. 3.8.3.1 Rapid traverse.- The reset counter shall follow the azimuth counter within 0.25 mil when the knob
30、 is rotated at 200 rpm for one minute. The gunners aid counters shall remain at zero. f 0.25 mils from any reading. 3.8.3.3 Gunners aid counters. 3.8.3.3.1 Excursion range.- The gunners aid counters shall have a minimum of 50 mils excursion OR the “L“ and “R“ scales. 3.8.3.3.2 Settings.- Setting 50
31、mils on the IL“ scale shall decrease the reset counter reading by 50 f 0.5 mils. scale shall increase the reset counter reading by 50 f 0.5 mils. shall be no change in the azimuth counter readings when the 50 mils values are set into the gunners aid counters. Setting 50 mils on the “RI There 3.9 Ope
32、rability.- The boresight adjustment shaft, rheostat knob, azimuth counter door and latch, positioning of crank, positioning of Knob 8587442, and the spring action of the electrical contact shall be operable at standard and extreme operating temperatures. 3.9.1 Torque.- The running torque required to
33、 operate the following knobs shall be within the values specified for standard temperature and shall not exceed the values Specified for extreme operating temperatures. The torque values for the azimuth knob shall be met with Knob 8587442 indicating INDIRECT (out of detent). 60 to 90F (Standard -40“
34、 and +150“F (Extreme Operating Temperatures) 2 to 6 in. - lbs. 9 in. - lbs. 54 in. - OZS. Gunners aid 10 to 30 in.- 02s. 18 in, - 02s. Reset Counter 5 to 10 in.- OZS. E leva t ion 10 to 48 in.- ozs. 86 in. - OZS. 3.9.2 Direct force.- The following operability requirements shall be met with the force
35、 applied horizontally and in the direction of movement. 3.9.2.1 Elbow assembly.- When checked at standard temperature, a direct force of 2 to 7 pounds applied adjacent to the eyelens shall be required to rotate the elbow assembly in each direction through the full extent of travel. shall not exceed
36、13 pounds. The force required at extreme operating temperatures . 5. -_ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-60895 32 U 777770b 0343723 9 U MIL-T-60895 (MU) 3.9.2.2 Reset counter knob.- When checked at standard temperature, a direct
37、force of 4 to 7 pounds shall be required to push the reset counter knob in sufficiently to permit rotation. operating temperatures shall not exceed 13 pounds. The force required at extreme 3.9.2.3 Counter numerals.- With the lowest digit of each counter in coincidence with its respective index line,
38、 the remaining numbers shall be in horizontal alighment within one-sixteenth inch Ivhen checked at the standard ambient temperature. 3.10 Illumination. 3.10.1 Counters,- With the lamp energized, the numerals and markings of each counter shall be clearly distinguishable when observed in a darkened ar
39、ea. 3.10.2 Reticle.- With the reticle lamp energized, the reticle markings shall be clearly distinguishable when observed in a darkened area. requirement shall be met thraigh one full revolution of the head in azimuth. Rotation of the reticle rheostat knob shall vary the intensity of illumina- tion.
40、 This 3.10.3 Light projector.- With the light projector lamp energized, the vertical slit in the head of the telescope shall be illuminated and clearly defined over its entire length and width when observed in a darkened area. Rotation of the light projector rheostat knob shall vary the intensity of
41、 illumination. 3.11 Insulation resistance.- Insulation resistance shall not be less than 10 megohms when a potential of 100 vdc is applied. 3.12 Continuity.- The continuity of the wiring shall be checked for conformance with applicable wiring and continuity drawing requirements. 4. UAT.,ITY ASSURANC
42、E PROVISIONS 4.1 Responsibility for inspection.- Unless otherwise specified in the contract or purchase order, the supplier is responsible for the per- formance of all inspection requirements as specified herein. Except as otherwise specified, the supplier may utilize his own facilities or any comme
43、rcial laboratory acceptable to the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.1.1 General provisions.- The component a
44、nd subassembly inspection requirements of MIL-F-13926 form a part of the Quality Assurance Provisions of -this specification. .in MIL-STD-109. Definitions of inspection terms shall be as listed Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided
45、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-bO95 12 7777706 03L11725 B MIL-T-60895 (MU) - MAJOR: AQL 1.0% Defective 101. 102. 103. 104. 105. 106. 107. 108 109. 110. 111. 112. 113. 114. 115. 116. 117. 118. 119. 120. 121. 122. 123. 124. 125. 126. 127
46、. 128. 129, 130. 131. 132. Pre-vibration collimation Vibration Post vibration collimation Cleanliness Image tilt Parallism of image and reticle Eyepiece focus Para1 lax Reticle accuracy Settings counter gunners aid Counter excursion range Azimuth error (800 mils) Azimuth deflection error (15 mils) A
47、zimuth back 1 ash Level travel Lift Click mechanism Rapid traverse (reset counter) Reset counter (reset operation) Elevation travel Plumb travel Re so lut ion Torque ( 60 O - 90 o F) Operability (60-900F) illumination (reticle) illumination (counters) Counter number alignment Light projector Elbow m
48、ovement force (6Oo-9O0F) Reset counter force (60-900F) Insulation resistance Continuity 3.7.1.1 3.3.4 3.7.1.2 3.5 3.7.2 3.7.3 3.7.4 3.7.5 307.7 3.8.3.3.2 3.8.3.3.1 3.8.2.1 3.8.2.2 3.8.2.4 3.8.2.5 3.8.2.6 3.8.3.1 3.8.3.2 3.8.1.1 3.8.1.2 3.7.6 3.9.1 3.9 3.10.2 3.10.1 3.9.2.3 3.10.3 3.9.2.1 3.9.2.2 3.1
49、1 3.12 3.8.2.3 4.7.2.1 4.7,2.1.1 4.7.2.1.2 4.7.2.1.3 4.7.2.1.4 4.7.2.1.5 4,. 7.2.1.6 4.7.2.1.7 4.7.2.1.8 4.7.2.2.1 4.7.2.2.1 4.7.2.2.2 4.7.2.2.2 4.7.2.2.2 4.7.2.2.3 4.7.2.2.4 4.7.2.2.5 4.7.2.2.6 4.7.2.2.6 4.7.2.3.1 4.7.2.3.1 4.7.2.2.7 4.7.2.4.1 4.7.2.4 4.7.2.5 4.7.2.5 4.7.2.6 4.7.2.5 4.7.2.7 4.7.2.8 4.7.2.9 4.7.2.10 4.3.3 Acceptance and rejection.- Rejected lots shall be screened for all defective charact
