1、 L - - MIL-P-48571 (MU) 31 December 1975 MILITARY SPECIFICATION PERISCOPE, TANK: M32E1 This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 This specification covers one type of combination passive-daylight tank gunners periscope designate
2、d Periscope, Tank: M32E1. The periscope is a part of the fire control system in the 105MM Gun Tank, M60 and is used for day and night sighting and observing. 2. APPLICABLE DOCUMENTS 2.1 The following documents, of the issue in effect on date of invi- tation for bids or request for proposal form a pa
3、rt of this specification to the extent specified. SPECIFICATIONS Military MIL-F-13926 MIL-P-14232 MIL-1-45607 MIL-E-48441 MIL-B-48589 MIL-H-48590 STANDARDS Military MIL-STD-105 MIL-STD-109 MIL-STD-810 Fire Control Material: General Specification Governing the Manu- facture and Inspection of Parts, E
4、quipment and Tools for Army Materiel, Packaging and Packing of Inspection Equipment, Acquisition, Maintenance and Disposition of Elbow Assembly, Passive: 11733401 Body (Daylight) Assembly: 11747350 Head Assembly: 11727496 Sampling Procedures and Tables for Inspection by Attributes Quality Assurance
5、Terms and Definitions Environmental Test Methods FSC 1240 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-P-8573 12 99f77Ob 0323777 7 M . MIL-P-48571 (MU) DRAWINGS U.S. Army, Frankford Arsenal F8247391 FU732155 FU732156 FU738140 F11747400 Test Fi
6、xture for Periscope Gage, Interchangeability, Minimum Gage, Interchangeability, Maximum Final Acceptance Inspection Equipment Periscope, Tank: M32E1 PACKAGING DATA SHEET PS11747400 Packaging of Periscope, Tank: M32E1 (Copies of specifications, standards, drawings and packaging data sheet required by
7、 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 accordance with Drawing FU747400 and drawings pertaining thereto. The follo
8、wing shall have met their respective specifications (except that they need not be sub- jected to separate temperature, vibration . two mutually perpendicular horizontal axes (all four sides). The periscope shall also be subjected to six cumulative shocks consisting of three each at 90 Gs, then 35 GI
9、s applied in one direction along the vertical axis (normal operating position of periscope only). The shock pulse shall have a half sine wave. For 100 GIs 2 10% and 90 GIs 2 10% the shock pulse shall have a time duration of 3 f .2 milli-seconds; for 40 Gs k 10% and 35 GIs 2 10% the shock pulse shall
10、 have a the duration of 18 5 3 milliseconds. Subsequent to shock, there shall be no failure or flicker of light emission from the image tube nor the reticle projector lamp. This requirement shall be met with the image intensi- The shock in- The periscope shall also show no evidence of physical failu
11、re. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-48571 (MU) Following the shock test the periscope shall meet the requirements of 3.8.3.2, 3.8.8, 3.2, 3.1, 3.7, and then each module (see 3.1) shall meet their own respective post-shock test r
12、equirements. 3.8.4.1, 3.8.9, 3.8.2, 3.8.3.1r1, 3.8-3.1.2, 3.8.5, 3.8.6, 3.8.6.1, 3.8.7, 3.7 Cleanliness.- With the periscope disassembled, the three modular units shall meet the following requirements: a. Defects.- There shall be no evidence of moisture, grease, finger- prints, condensates, fracture
13、s, and adhesive separations on any glass com- ponent when viewing through either end of each module (including the unity power system). b. Dirt. (1) Body assembly (Daylight).- When viewed through the eyepiece, there shall be no more than three dirt particles appearing within a 50 mil diameter centra
14、l field of view. ticles appearing outside the specified field of view. The angular separa- tion between dirt particles shall be at least 15 mils. smaller than 1/4 reticle line width shall be ignored regardless of distri- bution. the reticle line. There shall be no more than three dirt par- Dirt part
15、icles The size of any particle shall not exceed the apparent width of (2) Elbow assembly (Passive).- When viewing through the eye- piece with the image intensifier tube energized, there shall be no more than five particles visible on the screen surface. cle shall not exceed the apparent width of the
16、 reticle line. The size of any parti- (3) Head assembly.- There shall be no more than three parti- cles of dirt or foreign material (classed as dirt) on any glass component. The size of any dirt particle shall not exceed 0.05 inch. 3.8 Performance. 3.8.1 Orientation. a. ing pads in a vertical plane.
17、 horizontal plane. Datum Plane “W“ (Ref. Dwg. F11747303) defined by the three mount- Datum Plane “J“ (Ref. Dwg. F11727486) on a b. 22 degrees 30 minutes with respect to Datum Plane “W“ as measured in a vertical plane. Side “L“ (Ref. Dwg. F11727486) of the input coupling positioned NOTE: At no tisne
18、shall the input coupling be allowed to strike hard against the travel stops. . 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 reticle. 6 e3 Provided by IHSNot for ResaleNo reproduction or networking permitted without li
19、cense from IHS-,-,-MIL-P-LI571 12 777770b 0321782 O M MIL-P-48571 (MU) (2) The eyepiece of the passive system focused on the screen of the image intensifier tube. (3) A 1200 meter target provided far both the daylight and passive systems. Ring 11733436 for best resolution of target (1200 meters) ima
20、ge. Parallax.- Parallax between the reticle and the image of a tar- d. Focus passive elbow assembly by rotating objective focusing 3.8.2 get at 1200 meters shall not exceed 0.1 mil when adjusted by Eccentric 8205635 on the daylight body assembly. 3.8.3 Collimation.- The following collimation require
21、ments shall be established prior to meeting the vibration/shock of 3.6: a. An incident line of sight which is originally perpendicular within 0.2 mil to Datum Plane “W“. b. The input coupling positioned in accordance with 3.8.lb. Provided by IHSNot for ResaleNo reproduction or networking permitted w
22、ithout license from IHS-,-,-MIL-P-48573 12 = 7777706 0323783 - E MIL-P-48571 (MU) 3.8.3.1 Pre-Vibration/Pre-Shock Setting.- Rotate daylight and passive boresight knobs to establish coincidence of each boresight cross with the incoming line of sight (see 3.8.3a) prior to meeting requirements of 3.6.
23、3.8.3.1.1 Daylight viewing area.- a. Elevation knob travel.- The boresight knob shall provide a mini- mum travel of 5.0 mils up and 8.0 mils down from the collimation 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 t
24、he collimated setting of 3.8.3a. C. Line of sight variation.- 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 0.1mil (total variation not to exceed 0.2 mil), Variation in the line of sight in 3.8.3.1.2 Passiv
25、e viewing area. a. Elevation knob travel.- The boresight knob shall provide a mini- mum travel of 6.5 mils in elevation and depression from the collimated sett- ing of 3.8.31. b. Deflection knob travel.- The boresight knob shall provide a minimum travel of 6.5 mils in each direction from the collima
26、ted setting 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/Pos
27、t-Shock Collimation.- The original collima- tion settings established in 3.8.3.1 shall not deviate more than 0.3 mil (including fixture error) as observed through eyepiece subsequent to meet- ing requirements of 3.6. 3.8.4 Collimation repeatability. 3.8.4.1 Assembling daylight body and passive elbow
28、 to head assembly.- The daylight body and passive elbow assemblies shall be capable of repeat- ing an original line of sight within 0.20 mil when removed and reinstalled (a minimum of 3 times) into the head assembly. 3.8.5 Image tilt - daylight and passive.- The image of a target line which is origi
29、nally parallel to Datum Plane “3“ shall emerge from the eye- piece parallel to this same surface within 2.0 degrees of arc. I! 7 _I 8 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-48571 12 U 9777906 0321784 4 U: MIL-P-48571 (MU) 3.8.6 Paral
30、lelism of reticle and image, passive.- The image of a tar- get line originally parallel to Datum Plane “JW-shall be parallel to the horizontal reticle line within 2.0 degrees of arc. 3.8.6.1 Parallelism of reticle and image, daylight.- The image of a target line originally parallel to datum plane “J
31、“ shall be parallel to .the horizontal reticle line within 2.0 degrees of arc. 3.8.7 Objective focusing range. 3.8.7.1 Daylight.- Rotation of Eccentric 8205635 shall cause the ob- jective assembly to travel a minimum of 0.010 inch in each direction from the position established in 3.8.2. 3.8.7.2 Pas
32、sive.- Rotation of Ring 11733436 shall cause the objective to bring targets from 50 meters to 3000 meters into focus. 3.8.8 Resolution. 3.8.8.1 Daylights- The resolution shall be 10 seconds of arc or less in all four meridians. not exceed 0.25 diopter. Eyepiece focus shift between any two meridians
33、shall 3.8.8.2 Passive,- The resolution shall be one minute of arc or less in two meridians. Eyepiece focus shift between the meridians shall not exceed 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 appl
34、ication of +24 k 6.0 VDC to Contact 11733497 or appli- cation of 3 VDC 2 0.3 VDC to Connector 11733493 (Ref. Dwg. F11733401). 3.8.9.2 Image steadiness.- There shall be no visible flicker, no move- ment of the image nor audible sparking when observed for one minute. This observation shall be made aft
35、er the expiration of 15 seconds tube stabili- zation time. 3.8.9.3 Reticle brightness.- With a minimum of 18 and a maximum of 30 volts applied to the Contact 11733497 the reticle markings shall be visible when viewing through the eyepiece with the image intensifier tube * energized (see 3.8.9.1). to
36、 full bright by adjusting the reticle brightness control Knob MS91528-OE1B clockwise. The reticle brightness shall be adjustable from off 3.8.9.4 On-Off Switch.- The image intensifier tube shall shut down when + 24 VDC k 6 VDC is removed from Contact 11733497 with the on-off switch in the on positio
37、n. tion of the 24 VDC unless the on-off switch is recycled from off to on, The tube shall not be energized by reapplica- 9 I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-48571 (MU) 4. QUUIT ASSURANCE PROVISIONS 4.1 Responsibility for inspect
38、ion.- Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. specified, the supplier may utilize his own facilities or any other facili- ties suitable for the performance of the inspection requ
39、irements specified herein, unless disapproved by 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. Except as otherwise 4.1.
40、1 General provisions.-. The component and 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 4.2 First article (initial production) approval.- The requirement for
41、 first article approval and the responsibility (Government or contractor) for first article testing shall be-as specified in the contract. for first article approval tests shall consist of three periscopes plus three each of all items covered by SQAP. The sample shall be manufactured in the same man
42、ner, using the same materials, equipment, processes, and procedures as used in regular production. All parts and materials, includ- ing packaging and packing, shall be obtained from the same source of supply as used in regular production. The sample 4.2.1 Government testin the Passive Focusing Ring
43、11733436 shall be ad- justed for best focus of the target image after the diopter adjustment knob of the passive eyepiece is set for best focus of the phospher grain on the screen of the image tube; Eccentric (for adjusting parallax) shall be ad- justed for minimum parallax between the target image
44、and reticle and then locked after the diopter knob of the daylight eyepiece is set for best focus of the periscope reticle; the sector lever of test fixture shall be engaged in the zero degree elevation position on the index plate and the 10“ collimator (8O field of view) shall be adjusted for 1200
45、meters, Light assembly “K“ shall be removed when performing tests for daylight sy- stem. When performing tests for passive system, light assembly “K“ shall be utilized, be permitted a 15 second stabilization period, prior to conducting the per- formance tests . Unless otherwise specified The image i
46、ntensifier tube and reticle projector lamp shall 4.6.6,l Electrical characteristics - passive. 4.6.6.1.1 Image intensifier tube.- Apply 24 VDC 2 6 VDC to Contact 11733497 (Reference Drawing F11733401) and cycle the on-off switch from off to on, by means of.the shutter lever. After allowing a 15 seco
47、nd tube stabilization period, view through the passive eyepiece and observe the image tube screen. The screen surface of the image intensifier tube shall be illuminated. Upon satisfactory completion of the test, remove the 24 VDC k 6 MC from Connector 11733497 and apply 3 VDC 2 0.3 VDC Connector 117
48、33493 (Reference Drawing 11733401). Cycle the on-off switch from off to on. After allowing a 15 second tube stabilization period, view through the elbow assembly eyepiece. determine overall compliance with 3.8.9.1. The screen surface of the tube shall be illuminated to CAUTION: When the on-off switc
49、h is in the “On“ position and the input voltage to the regu+ator is interrupted, the tube cannot be energized by reapplication of the input voltage unless the on-off switch is cycled from off to on. 4.6.6.1.2 Image steadiness.- Perform this test with the reticle pro- Position an observation telescope at the passive eyepiece The telescope shall contain a crossline reticle pattern jector lamp off, of the periscope. and be capable of focusing
