1、MIL-T-63359 12 = 7997906 0348980 7 MIL-T-6 3 3 59 (AR) 17 July 1979 MILITARY SPECIFICATION TELESCOPE, ELBOW, MllA2 This specification is approved for use by the U.S. Army Armament Research and Development Command, and is available for use by all Departments and Agencies of the Department of Defense.
2、 1. SCOPE 1.1 This specification COVKS an instrument designated as Telescope, Elbow: M11882. 2. APPLICABLE Dg)CUMENTS 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 specification to the extent specified herein. Optical
3、Components for Fire Control Instruments; General Specification Governing the Manufacture, Assembly, and Inspection of MIL-P-13926 Fire Control Materiel: General Specification Governing the Manufacture and Inspection of MIL-P- 14232 Parts, Equipment and Tools for Army Materiel, Packaging and Packing
4、of MIL-1-45607 Inspection Equipment, Supply and . Maintenance of Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.2.2 MIL-F-13926. a. Qrder sf preceden
5、ce b. Dimensions and tolerances C. Inorganic protective surface finishes d. Electrical. and electronic assemblies e. Part identification and marking f. Wor kmanskip 3.3 Environmental. 3.3.1 Storage temperatures.- The telescope shall show no evidence of physical failure at room temperature (60 to 90F
6、) ater having been thermally stabilized at -70F and +160%+. 3.3.2 Standard ambient temperatures.- subsequent to meeting the requirements of 3.3.11 the telescope shall meet all the requirements of this specification except 3.3.3 at a standard ambient temperature between 60F and 90F. 3.3.3 Operating t
7、emperatures,- The telescope shall show no evidence of physical failure and shall meet the applicable requirements of 3.9 while thermally stabilized at -40F and +150F. 3.3.4 Vibration.- The telescope shall show no evidence of physical failure (loose, missing OK broken parts) after having been vibrate
8、d at a frequency of 38 cycles per second at an amplitude of 1/16 inch (1/8 inch total excursion) for a period of 5 minutes + 15 seconds. Vibration shall not have caused the eyepiece are to disengage from the initially engaged position. Subsequent to vibration, the telescope shall meet the require- m
9、ents of 3.4 to 3.10 inclusive. 3.4 Cleanliness.- The telescope shall meet the cleanliness requirements of Specification MIL-O-P3830. There shall be no more than 2 particles of dirt visible in the center zone (.614 inch diameter) of the reticle, and the area of each particle shall not be in excess of
10、 the area equivalent to a size 10 dig. There shall be no more than 5 particles of dirt visible in the outer zone of the reticle, and the area of each particle shall not be in excess of the area equivalent to a size 20 dig. 3.5 Sealing.- The telescope shall maintain an internal pressure of dry nitrog
11、en at 5 pounds per square inch (psig) for a minimum period of 2 hours without Issc of pressure in excess 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,
12、-,-3.9 following controls shall be within the values specified when the controls are rotated at a standard ambient temperature of 60 to 90F. is exposed to the extreme temperatures of 3.3.3 shall not exceed the values obtained at standard ambient temperature by more than 100 percent. Operability.- Th
13、e torque required to operate the The torque values obtained when the telescope 3.9,1 Cant correction knob.- With the level vial bubble centered and the tapered holes and eyepiece arm vertical, the running torque required to rotate the cant correction knob shall be 7 inch-pounds - + 1.0 inch-pound. 3
14、.9.2 Mirror, plunger, arm and rheostat.- The level vial mirror (pivotal type only), plunger, eyepiece arm and the rheostat knob shall be mechanically operable when exposed to the operating temperatures of 3.3.3. 3.10 Insulation resistance.- Insulation resistance shall not be less than 10 megohms wit
15、h a potential of 100 volts direct current applied. - 4. QUALITY ASSURANCE PROVISPBNS 4.1 Responsibil.ity for inspection.- Unless otherwise speci- fied in the contract or purchase order, the supplier is respon- sible for the performance of all inspection requirements as specified herein. Except as ot
16、herwise specified, the supplier may utilize his own facilities or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specificatio
17、n where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements . 4.1.1 General provisions.- The component and subassembly inspection requirements of MIL-F-13926 form a part of the Quality Assurance Provisions of this specification. of inspection term
18、s shall be as listed in MIL-STD-109. Definitions 4.2 First Article (Initial Production) Approval.- The requirement for first article approval and the responsibility (Government or Contractor) for first article testing shall be as specified in the contract. The sample for first article approval tests
19、 shall consist of 3 Elbow Telescopes plus three (3) each of all items covered by SOAP. The sample shall be 5 If . . - - . . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without l
20、icense from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.5.2.2 Contractor design.- The contractor shall design and supply inspection equipm
21、ent compatible with the “Test Methods and Procedures“ specified in 4.6 of this specification and with the component inspection procedures specified in “Examination“ and “Test Facilities“ requirements of MIL-F-23926. Since tolerance of test equipment is normally considered to within 10% of the produc
22、t tolerance for which it is intended, this inherent error in the test equipment design must be considered as part of the prescribed product tolerance limit. Thus, concept, construction, materials, dimensions and tolerance used in the design of test equipment shall be so selected and controlled as to
23、 insure that the test equipment will reliably indicate acceptability of a product which does not exceed 90% of the prescribed tolerance limit, and permit positive rejection when non-conforming. such as to facilitate routine calibration of test equipment. Construction shall be 4.5.3 Test equipment.-
24、In conjunction with 4.5.2.2 the following standard test equipment shall be utilized in the performance of the applicable tests as specified in 4.6 and 4.7. NOMENCLATURE 0 1. Hot and Cold Chamber DESCRIPTION Standard type conforming to the accuracies outlined in test facilities specified under test f
25、acilities of MIL-F-13926. 2. Insulation Resistance Checker 3. Power Supply 4. Torque Wrench, Scales and Adapters 5. Pressure Gage 9 Standard shop type conforming to the accuracies outlined in 4.5.2.2 O %o 100 WC output within 10% accuracy Standard shop type accurate to within 10% of specification re
26、quirements Standard shop type accurate to within 10% of specification r equi P emen t Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-63359 12 I 9
27、97990b 0348990 T MIL-T-63359 (AR) 4.7.2.2 Vibration.- This test shall be performed using a testing device, the accuracy of which shall be equal to or exceed the accuracy depicted on Fixture Drawing F7560085. The test shall be performed as outlined in Procedure V of MIL-F- 13926; however, the duratio
28、n shall be as specified in 3.3. 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 conformance with 3.3. Repeat test for cleanliness. 4.7.2.3 Post vibration.- Pmmedaately after comp
29、leting the vibration test and test for cleanliness, reassemble the tele- scope to the testing fixture OP medium withoct disturbing any previous settings. Observe where the intersecting point of the telescopes reticle fall upon the collimator projector retcile with respect to the recorded position ob
30、served in 4.7.2.1. They must coincide within the limits of 3.7.1. 4.7.2.4 Eyepiece foeus.- This test is to be accomplished by placing a white background in front of the telescopes objective lens. Eyepiece focus is to be measured using a 3 power dioptometer conforming to the accuracies depicted on Dr
31、awing 9680631. Adjust the dioptometer eyepiece assembly to the dioptometers optical axis. Next direct the dioptometers line of sight toward a 500 feet distance target such as a smoke stack, edge of a building, or some other well defined target image. Adjust the objective assembly until parallax is r
32、emoved. Set the dioptometer scale to zero diopters. The telescope reticle and image shall remain clear and distinguishable throughout the permissible diopter range specified in paragraph 3.7.6. e 4.7.2.5 Parallelism of image and reticle.- With the telescope positioned as outlined in 4.7.1, observe c
33、oincidence between one end of the instruments horizontal reticle line with respect to the comparable projector collimators horizontal reticle line and observe where the opposite end of the telescope horizontal reticle line falls with respect to the projector collimator horizontal line, both lines mu
34、st coincide within the limits specified in 3.7.3. 4.7.2.9 Parallax.- Using Set-up outlines in 4.7.1, parallax will be checked after the distances specified in 3.9.8 have been set into the projector collimator. The test is performed by aligning the reticle line or mark near or on the optical axis of
35、the projector collimator reticle, Observe this positioning, -_ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-retested in accordance with 4.7.2.10. All
36、 retested telescopes shall be aside fa a minimum of 12 hours and then retested for internal pressure in accordance with 3.5. fail second test, the telescope shall be rejected. adapters and torque measuring devices (scales, weights or wrench) . Torque measurements to be considered as running torque a
37、nd are to be performed under temperature conditions outlined in 3.9 and shall conform to the requirementsof 3.9.1, 3.9.2 and 3.9.3. Should the telescope 4.7,2.10 Torque.- Torque to be measured using appropriate 4.7.2.11 Insulation resistance.- This test shall be conducted in accordance with Method 3
38、02 of MIL-STD-202, using test condition tAt. Insulation resistance measurements shall be made between insulated points and ground. Insulation resistance shall not be less than the value specified in 3.10. 5. PREPARATION FOR DELIVERY 5.1 Packaqing, p acking and markin9.- Packaging, packing and markin
39、g shall be in accordance with MIL-P-14232 and the . applicable packaging data sheet as follows: 10512082 Telescope, Elbow: M118A2 The level of protection shall be as specified in the procurement document. 6. NOTES 6.1 Intended use.- Elbow Telescope M118A2 is intended for use as components of the pri
40、mary direct fire control systems on self-propelled howitzers. 6.2 Ordering data.- Procurement documents should specify the following: a. Title, number, and date of this specification. b. Selection of applicable levels of preservation, C. Applicable stock numbers. d. Applicable packaging data sheet n
41、umber (see 5.1). e. Selection of applicable level of preservation, packaging packaging, and packing. and packing. 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license
42、from IHS-,-,-6.4 Drawinqs.- Drawings listed in Section 2 of this specification under the heading of U.S. Army Armament Research and Development Command (ARRADCOM) may also indicate drawings prepared by, and identified as Edgewood Arsenal, Frankford Arsenal, Rock Island Arsenal or Picatinny Arsenal d
43、rawings. Technical data originally perpared by these activities is now under the cognizance of ARRADCOM. Custodian: Army - AR Preparing Activity: Army - AR Project No: 1240-A729 *U.S. GOVERNMENT PRINTING OFFICE: 1979-603-02213479 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
