1、MIL-R-22040 12 = 7777906 O/llb138 7 W 7 MIL-R-22040( Nord) MILITARY SPECIFICATION 1. scorn 1.1 - $cope. - This specification covers the Rangefinder Mark 75 Md 1. 2.1 The following documents of the issue in effect on date of invitation for bids, form a part of this specification. SPECIFICATIONS MILIT
2、ARY MIL-P-116 - Preservation, List of Draw- ings, Assemblies, Parts, Specifications, Etc. LD 413777 - Stowage Box, For Rangefinder Mark 75; List of Drawings, Asseniblies, Psrts, Specifications, Etc. i FSC 1240 ,. t h Provided by IHSNot for ResaleNo reproduction or networking permitted without licens
3、e from IHS-,-,-MIL-R-22040 (Nord) PUaLICATIONS BUREAU OF ORDiiUSNCE OP b - General Instructions for the Design, Manufacture, and NAVORD OD 135U - Rangefinder Mark 75 Md 1, Factory Acceptance Inspection of Naval Ordnance Equipment, Test. (Copies of specifications, standards, drawings, and publication
4、s required by contractors in connection with from the procuring activity or 3.1 General requirements. - ame with Publication OP 400, specific procurement functions should be obtained as directed by the contracting officer.) Requirements for manufacture shall be in accord- The rangefinder shall confo
5、rm to LD 412545 and all documents listed thereon, this specification, and the contract or order. 3*2 Preproduction sample, - Unless otherwise specified in the contract or order (see 6.2), a preproduction semple is required (see 4.3.1.1) for each such contract or order. Samples shall be manufactured
6、usiw the methods, procedures, and plant location proposed for the production lot* Samples shall be inspected as specified in 4.5.1, such inspection being forthe purpose of determining that the manufacturers production process will produce rangefinders that will meet the requirements of this specific
7、ation, 3.3 CoPstruction. - 3.3.1 Cleanness* - Ilie entire interior of the gas-tight compartment and of the eyepiece assdiies shall be free from oil, dust, dirt, and foreign matter of any kind, and free from any lubricant that might in time collect on the surface of any optical part. before being ass
8、embled into the instrument to insure freedom from dust, dirt, misture, fingerprints, and other contamination. Reagents used for cleaning cemented optical components shall not be of a type that would be absorbed into the cement and cause subsequent deterioration of the cement or cause cement starts.
9、Scales shall be clean and legible. Optical components shall be carefully cleaned 3.3.2 Optical cementing, - The cement film binding optical elements together shall be free from foreign particles, bubbles, cement starts, milkiness, and other defects that dght reduce the effectiveness of the rangefind
10、er. Excess cement shall be removed from the exterior of cemented parts; however, no reagent shall be used that could be aboorbed into the cement PU or cauce cement starts. Ail cemented lenses shall be marked on the eQe with the symbol.“CC“ indicating cellulose caprate.cement. Provided by IHSNot for
11、ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-R-220LIO 12 W 7777706 014bLLIO 5 W 3.3.3 End reflector surfaces. - Aluminizing and overcoating of end reflectors shall be in accordance with Specificztioc MIL-K-13508 except that silicon monoxide overcoating shall be wed
12、 in lieu of magnesiun fluoride. 3.3.4 Lubrication. - All gearing, sliding mechanisms, bearings, and moving joints shs31 be lubricated with instruuent grease conformimg to Specification MIL-G-15793. and any vapor therefrom. Care shall be taken that the optical parts reniain free of grease 3.3.5 Retic
13、les. - When seen through the eyepieces, the markings of the reticles shall be sharp and clean-cut. intersections of lines or other imperfections visible. indistinct or broken on account of improper filling. percegtible difference in the size, form, or appearance of any of the stereoscopic reference
14、marks in one field and the corresponding marks in the other field. There shall be no fillets at the No lines shall appear There shall be no 3.3.6 Main outer bearings. - The main outer bearings shall receive their final machining after assembly on the outer tube in order to meet the bearin hand field
15、s, and the residual parallax between the two fields shall be such that when the rangefinder is directed at a target at least 3000 pds away, so that the tmget image is near any stereoscopic reference mark on the horizontal diameter of the field, vertical or horizontal motion of the range-takers eye s
16、hall cause no perceptible change in the apparent relative distance of target and mark as seen stereoscopically, The limit shall not be exceeded when the focus The requirements 3.5.8 Interpupillary adJustment. - Each graduation of the scale shall g%ve the correct interpupillary distance within /2 mil
17、imeter . stance shall not be affected by chesges in the focusing motion. ne interpupillary 3.5.9 Accuracy of diopter graduation. - Each diopter mark on the main and range scde eyepiece shall be accurately located with respect to shq focus on the measuring mwk or scale index w-STD-lO5, Inspection Lev
18、el I, Acceptance Quality Level (AQL) 4.0 percent defective. 4,4 Inspection. - 4.4.1 General procedure. - General inspection and test procedures for In- Government inspection and for contractor inspection shall be in accordance with the provisions of Publication OP 400 and this specification. accepta
19、nce inspection shall be conducted at the contractors plant. spections shall be performed at the various stages of assenibly best suited for performing the examinations and tests specified herein. in 4.3.1.3 shall be visually examined for completeness of manufacture, freedom from defects, proper iden
20、tification, and workmanship. nondestructive inspections shall be made in accordance with the acceptance inspection instructions provided by the procuring activity. k4,3 - Parts, - Parts selected in accordance with 4.3.2, including spare parts, shall be inspected in accordance with the procedures of
21、4.4.2. Lot 4,4.2 Visual. and dimensional examination. - Each rangefinder as specified Dimensional and other 4.4,4 Preservation, packaging, p RCkiW, Ud Wkiw* 4.4.4.1 Rangefinders, - Each rangefinb2r container shall be exmlned to determine that preservation, packing, and marking ase in accordance with
22、 the requirements of section 5, 4,4.4.2 Parts. - Sample containers of spare parts selected in accordance with 4-3.3 be exmined to determine that preservation, packaging;, packing, and -king are in accordance with the requirements of Section 5. 4,5 Tests and test procedures, - 4.5.1 Preproduction tes
23、ts, - Preproduction rangefinders (see 4.3.1.1 shaU be subjected to th e environmental tests of 4.5.3.1 through 4.5.3.2.2 and the lot acceptance tests of 4b5.4. tests and meetthe requirements specified herein shell be included in the quantity called for in the contract or order. 4.5.2 Periodic tests.
24、 = Periodic tests (see 4.3.1.2) shall consist of the environme4.5.3.1 through 4.5,3.4,2 and shall be performed on rangefinders which have previously passed the lot acceptance tests of 4.5 4. Rangefiaders that pass the required r 10 /-_ - Provided by IHSNot for ResaleNo reproduction or networking per
25、mitted without license from IHS-,-,-MIL-R-22040 12 m 77777Ob OL4bLq T m MILIFk2Ob (Nord) 4.5.2.1 Failures during periodic tests. - In the event of failure of any kwefindep during periodic. testing, Snspection and acceptance of subsequent rangefinders shall be suspended until the reasons for failure
26、and consequent rejection have been determined and the cause of failure corrected by the con- tractor to the satisfaction of the procuring activity. The contractor shall furnish the procuring activity with a written statement properly endorsed by the Government inspector indicating the reasons for fa
27、ilure and the corrective action taken. 4.5.3 Environmental tests. - 4.5.3.1 Shock stability. - The rangefinder shall be secured to a suitable The blows shall be struck, two in each of the three mutually perpen- shock test stand and tested for shock stability to deteraine conformance to 3.6.1. dicULa
28、r directions. 4.5.3.2 Vibration stability. - The rangefinder shall be tested for vibration stbility to determine conformance to 3.6.2. separately in each of the three mutually perpendicular directions. test in each direction shall be of at least i5 minutes duration. The vibrations shall be applied E
29、ach test 4.5.3.3 Watertightness. - The rangefinder shall be tested for watertightness to determine conformance to 3.6.3. change of range and eyepiece asseablies shall be subjected to the floodtight hose test specified in Standard MIL,-Sn-i and the fact that the Government may have formulated, furnis
30、hed, or in any way supplied the said drawings, specifications, or other data is not to be regardedby implication or other- wise as in any manner licensing the holder or any other person or corporation, or conveyrng any rights or permission to manufacture, use, or sell any patented invention that may in any way be related thereto. Preparing activity Navy - Bureau of Ordnance -. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
