1、flIL-T-qb3bA 32 m 77779Ob 0333632 2 m I F-17-45 MIL-T46386A(MU) 15 September 1967 SUPERSEDING MIL-T-46386 (MU) 1 August 1963 1. SCOPE MILITAY SPECIFICATION TELESCOPE, PANORAMIC: M113 1.1 This specification covers one type of telescope known as Telescope, Panoramic: azimuth for indfrect fire. M113 pr
2、imarily intended for laying the 105 Howitzer M102 in 2. APPLICABLE DOCUMENTS 2.1 The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of this specifica- tion to the extent specified herein. SPECIFICATIONS Military MIL-0-13830 Optical Com
3、ponents for Fire Control Instruments; General Specification Governing the Manufacture, Assembly and Inspection of Fire Control Materiel; General Specifi- cation Governing the Manufacture and Inspection of Parts, Equipment and Tools for .Ordnance Materiel, Packaging of Maintenance of MIL-F-13926 MIL-
4、Po14232 MIL-1-45607 nspection Equipment, Supply and STANDARDS Military . MILiSTD-105 MIL-STD-109 MIL-STD-LO2 Sampling Procedures and Tables for Quality Assurance Tenus and Definitions Test Methods for Electronic and Inspection by Attributes Electrical Component Parts DRAWINGS U.S. Army, Frankford Ar
5、senal F8626189 Telescope, Panoramic: M113 PACKAGING DATA SHEET MIL-P-l4232/P8626189 Packaging of Telescope, Panoramic: M113 F- -/ - p .t P r ,I PSC 1240 - % A - - I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-T-4 6 3 8 6A (MU) 4.4 Special sa
6、mpling for environmental testing. 4.4.1 Samples shall be selected from lots at random using inspection Level S-3 Table I of MIL-STD-105. be in accordance with AQL 2.5 of Table II-A of MIbSTD-105. shall have met all the requirements and tests outlined in Table I prior to being subjected to the follow
7、ing examination and test. Acceptance or rejection of the lot shall The samples * TABLE II CHARACTERISTIC REQUIREMENT TEST PROCEDURE 301. 302 . 303 . 304 . 305 . 306. Fabrication 3.1 Cer ti fication General specification 3.2 Certification Temperature operating 3.4.2 4.6.1.2 Torque (storage however, t
8、he temperatures specified in 3.4.1 and 3.4.2 shall apply, stabilized at the temperature specified, the result of the specified test shall conform to the limits outlined in 3.4.1 and 3.4.2 using test procedures outlined herein. When the panoramic telescope has been .: 4.6.1.2 Sealing optical assembly
9、. - This test shall be performed using testing equipment the accuracy of which shall conform to the accuracy depicted on Drawing F8565556. shall be Set-up as outlined in Set-up instructions shown on Drawing F8565556, When using pressure test fixture, the fixture 10 , f -_ Provided by IHSNot for Resa
10、leNo reproduction or networking permitted without license from IHS-,-,-MIL-T-4b3bA b2 777770b 03LLb22 5 m t NIL-T-46386A(Mu) Sheet 1. After connecting the test fixture to the panoramic telescope, adjust testing pressure to the pressure specified in 3.6.1 and maintain the pressure for time specified
11、in 3.6.1. stant to assure compliance with 3.6.1. connect a dew point tester to the exit posttand purge the optical assembly until -25OF is recorded and seal the unit. The gas used shall be dry nitrogen having a dew point of -25OF. Pressure gage shall remain con- At the completion of this test 4.6.1.
12、2.1 Sealing (counter assembly).- This test to be accomplished as outlined above, however, the pressure and time values specified in 3.6.2 shall apply. ! i . 4,7 Performance testing. 4.9,1. Orientation.- Proper orientation of the panoramic telescope is assured when mounted and secured to an adapter,
13、the accuracy of which shall be equal to or better than the accuracy depicted on Drawing F8565945, and when aligned as outlined in Set-up instructions specified on Drawing F8213899. lined above the line of sight, elbow assembly, counters and the five mil click mechanism shall be set as specified in 3
14、.7.1. With the panoramic telescope positioned on the fixture as out- 4.7.2 Collimation. 4.7.2.1 Previbration.- With telescope positioned as outlined in 4.7.1 observe coincidence between the panoramic telescope line of sight and the optical axis of the test reticle (target) in the collimator pro- jec
15、tor. Record this position. Exercise care not to move the setting of the pan- oramic telescope. This coincidence must be within the limits outlined in 3.7.1. 4,7.2.1,1 Vibration.- This test shall be performed using a testing device, the accuracy of which shall be equal to or exceed:the accuracy depic
16、ted on Fixture Drawing F7560085, lined in Procedure V of MIL-F-13926; however, the duration shall be as specified in 3.4.3. At the conclusion of the test, the telescope shall be subjected to a visual and tactile examination and shall be subjected to the following performance test to determine confor
17、mance with 3.4.3. tion test reassemble the telescope to the adapter and without disturbing any previous settings observe where the panoramic telescope Is optical line of sight falls upon the projector collimator reticle. This observed point and the recorded position (4.7.2.1) shall coincide within t
18、he limits speci- fied in 3.4.3. with respect to the recorded position of the optical axis. They must coin- cide within the limits outlined in 3.7.1.1. The test shall be performed as out- 4.7.2.1.2 Post vibration.- immediately after completing the vibra- Close the cover and observe where the line of
19、sight falls 4.7.2.1.3 Image wander.- With the cover opened and with the tele- scope positioned as outlined in 4.7.1, rotate the telescope azimuth mech- anism in one direction to any azimuth setting and rotate the azimuth mech- anism of the test fixture and equal amount in the opposite direction. Now
20、 observe coincidence between the optical axes. Non-coincidence between the axes shall not exceed an 18 mil spread to assure compliance with 3.7.2.1. - -i-* - . w- 11 i +* *. ._ -. .- -_._ f _-= .- -3y I * i 9 _-. . -i-a-J +. . e. Provided by IHSNot for ResaleNo reproduction or networking permitted w
21、ithout license from IHS-,-,-flIL-T-Ltb3B6A 12 9777906 0311623 7 9 = = _ L MIL-T-46386A(MU) This spread to be measured on the panoramic telescope reticle. 4.7,2.1.4 Cleanliness.- The panoramic telescope shall be tested for At cleanliness by using the shadowing techque outlined in MIL-0-13830. the con
22、clusion of this test, dirt particles shall not exceed the limits outlined in 3.5. 1 i I i i I I C i - 4.7.2.1.5 Image tilt.- With the panoramic telescope and fixture positioned as outlined in 4.7.1, image tilt shall be observed by sighting through Collimator F5549108 aligned to ehe optical axis of t
23、he eyepiece assembly and note parallelism between its vertical reticle line and the vertical. line of the collimator target. within the limits provided on the projected target (collimator reticle) to assure conformance with the 3,7.2. Repeat this test with the elbow assembly against each of the stop
24、s to assure conformance with 3.7.1.4. Again observe parallelism between the reticle lines. at eight different azimuth counter settings in 6400 mils of rotation. Each setting in azimuth will require the azimuth fixture plate to be rotated an equal amount in an opposite direction to permit reestablish
25、ing the line of sight to the position observed in 4.7.2.1.2. to be within the limits outlined in 3.7.1.4. Both fines shall be parallel Repeat this test . All readings are 4.7.2.1.6 Parallelism of image and reticle.- With the panoramic telescope positioned as outlined in 4.7.1, align one end of the i
26、nstruments vertical reticle line to the projector collimators vertical reticle line and observe where the opposite end of the panoramic telescope verticle reticle line falls with respect to the projector collimator vertical line, both lines must coincide within the limits specified in 3.7.4. extreme
27、 stops. different azimuth settings 6400 mils of rotation. of sight to the projector collimators target line after each selected azimuth setting by rotating the azimuth fixture plate an equal amount in the opposite direction. outlined in 3.7.1.4 and 3.7.4. Repeat this procedure with elbow assembly ag
28、ainst each of the Also repeat this procedure at approximately eight Return the line All check points are to be within the limits 4.7.2.1.7 Eyepiece focus.- This test is to be accomplished by placing a white background in front of the panoramic telescope window. Eyepiece focus is to be measured using
29、 a 3 power dioptometer conforming to the accuracies depicted on Dwg 7680631. eyepiece assembly to the dioptometers reticle until a clear sharp image appears on the dioptometers optical axis. Next direct the dioptometers line of sight toward a 500 feet distant tartet such as a smoke stack, edge of a
30、building, or some tither well defined target image. objective assembly until parallax is removed. any apparent movement between the reticle and target image when the head is moved from side to side or up and down. optical axis to the panoramic telescope optical axis and obtain a clear sharp image of
31、 the panoramic telescope reticle on the optical axis. all measurements on the dioptometer by adjusting the objective assembly. Any and all adjustments to be within the limits of 3.7.7. Adjust the dioptometer Adjust the Parallax is defined as Align the dioptometer$ Make I Provided by IHSNot for Resal
32、eNo reproduction or networking permitted without license from IHS-,-,- MIL-T-4b3bA 32 999770b 0333624 9 W MIL-T-46386A (MU) 4.7.2.1.8 Parallax.- Using the Set-up outlined in 4.7.1, parallax will be checked after each of the distances specified in 3.7.9 has been set into the projector collimator. The
33、 test is performed by aligning a reticle line or mark near or on the optical axis the projector collimator reticle. Observe this positioning, there shall be no apparent movement between the selected lines or mark when the observer moves his head from side to side or up and down. Reticle displacement
34、 shall not exceed the limits outlined in 3.7.9. Use the thickness of the reticle line to measure apparent movement. l I 4.7.2.1.9 Reticle accuracy.- Reticle accuracy may be assured by aligning the intersecting point of the panoramic telescopes verticle and horizontal reticle line to the correspondin
35、g intersecting reticle lines of the projector collimator. panoramic telescopes azimuth and elevating mechanisms. has been established, observe where the 80 mil graduations of the panoramic telescopes horizontal reticle line falls with respect to the corresponding reticle line of the projector collim
36、ator. limits of the reticle tolerance mark to assure compliance with 3.7.10. Adjustments may be made by means of the When coincidence They must coincide within the 4.7.2,2 Counter operation. 4.7.2.2.1 Gunner aid counters.- This test may be accomplished with the panoramic telescope positioned as outl
37、ined in 4.7.1 with the line of sight falling upon the projector collimators reticle as outlined in 4.7.2.1.2, Observe and record the azimuth test fixture reading. Set any correction reading into either the “L“ or llR1l counter. induced into the right “R“ gunners aid counter shall increase the reset
38、counter and equal amount and any reading induced into the left “LI gunners aid counter shall decrease the reset counter and equal amount to assure compliance with 3.8.2.1. gunners aid counter the reset counter shall reflect an increase or decrease of 50 mils within the limits outlined in 3.8.2.1 and
39、 the correction counter shall have traveled the minimum excursion outlined in 3.8.2 and the 6400 mil counter shall remain unchanged (see 3.8.2.1). accuracy shall be performed by inserting a correction into either the “Ltl or “R“ gunners aid counter and observing the appropriate change in the reset c
40、ounter. sight in a clockwise direction an equal amount when a correction is placed into the “If counter. telescope traverse the line of sight in the opposite direction until the reset counter records 3200 mils, telescope and observe coincidence between the panoramic telescopes optical axis and the p
41、oint on the projector collimators reticle established in 4.7.2.1.2. in 3.8.2.1. and at the 50 mil correction setting of each gunners aid counter. Any reading When 50 mils has been inserted into either The test for Turn the azimuth fixture plate to traverse the line of By means of the azimuth knob of
42、 the panoramic Now sighting through the panoramic This coincidence must be maintained within the limits specified Repeat this procedure at two additional correction readings Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-r MIL-T-4b3bA 12 W 9999906 0
43、311625 O W MIL-T -46386A(MU) I 4.7.2.2.2 Deflection error, backlash and 15 mil settings.- With the panoramic telescope positioned as outlined in 4.7.1 rotate the azimuth fixture plate 80mils. Sight through the panoramic telescope and rotate the azimuth knob in the opposite direction until the lhe of
44、 sight falls in this paint of coincidence. Record deflection counter reading and reset counter reading. deflection knob one complete revolution and retrun the line of sight to the previously established position and observe deflection and reset counter readings. This difference, if any, is backlash
45、and shall not exceed the limits sf 3.7.6.3. repeat above procedure. When coincidence is obtained observe deflection and reset counter readings. in 3.6.7.2. coincidence with the position outlined in 4.7.2.1.2. Do not override Rotate the Both should be in conformance with 3.7.6.1. Rotate the azimuth p
46、late an addftional 15 mils and Coincidence must conform to the limits outlined Repeat the 15 mil check after each 800 mil setting. 4.7.2.2.3 Level travel.- This test may be performed in conjunction with the deflection test outlined in 4.7.2.2.2. The test is performed by sighting through the panorami
47、c telescope after a selected azimuth setting has been inserted into the fixture and panoramic telescope, observe coincidence between the telescope horizontal reticle line and the horizontal target line near the optical Gis. the limits outlined in 3.7.5. They must coincide within 4.7.2.2.4 Lift.- Thi
48、s test may be performed in conjunction with the backlash test outlined in 4.7.2.2.2. ing the line of sight to the point of coincidence by observing where the horizontal reticle line of the panoramic telescope falls with respect to the previously established position (4.7.2.2.3). in the limits of 3.7
49、.5.1. The test is performed after return- ( They must coincide with- . 4.7.2.2.5 Five mil click mechanism.- This test may be performed by using visual and tactile inspection techniques. inspection shall conform to the requirement outlined in 3.8.2.7 when performed at the temperature specified. The result of this 4.7.2.2.6 Rapid traverse (reset counter1.-This test is made by assembling a teseing mechanism capable of providing an RPM o
