1、 NIL-G-Ll5782 20 777770b 0307805 3 I MILITARY SPECIFICATION GUN, AR DEFENSE ARTLLERY, 20MM: TOWED, m67u This specification is approved for use by the Rock Island Arsenal, Department of the Army, and is available for use by aL1 Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 This
2、specification covers one type of Air Defense Weapon System which consists of an electrically powered, six-barrel, 20 milli- meter (mm) gun with linked feed and amunition system, radar range, lead computfng sight and fire control system mounted on a towed, two wheel vehicle. The 1671 towed, XIMM, Air
3、 Defense Artillery Gun is hereafter referred to as the weapon system. 2.1 Issues of documents. The following documents of the issue in effect on the date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein. SPECIFICATIONS Military MIL -W-1
4、38 5 5 - MIL-P-14232 - Weapons: ament Subsystems, GeneraL Specification for pa;tCts, Equipment and Tools for Army Materiel, Packaging and Packing of Gun, Automatic, 20MM: * Ml68 Inspection Equipment, Acquisition Maintenance and Disposition of Radar Set, AN/VPS-2: 1.0549058 (Range Only Radar) Sight,
5、Lead-CompuCing, 61 for Gun, Anti-Aircraft Artillery, Self -Propelled, X)m, 63 and Towed, 2Om, m67 Generator, Sight; Current Fire Control for Gun, Anti-Aircraft Artillery, Towed, 20mm, xML67 and Gun, Anti-Aircraft Artillery, Self -Propelled, mm, 1163 Small Amns and Aircraft Arm- P Provided by IHSNot
6、for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-q598L LO W 7777906 0307806 5 I! mL4-45981( wc) STANDARDS Federai Fedo SM. No. 356 I Military m-STD-109 I MIL -STD -462 - - MIL-STD-810 Rock Island Arsenal l=37503 - Comercial Packaging. of Supplies and Equipment Qua
7、lity Assurance Terms a link chute; feeder assembly, and case chute components and system operation shall be inspected for smooth transition of mu- nition in compliance with 3.3.16 and 3.3.17. 4.6.20 Azimuth indicator test. The azimuth indicator assembly shall , Using system power and hand controls,
8、position the turret to be visually and manually inspected for secure and correct mounting, for free rotation of the dial from O through 64 in a clockwise direction and free rotation in a counter-clockwise direction to determine compliance with 3.3.18. a definite Peference point and set the azimuth i
9、ndicator to 64 on the dial. Slew turret and position at wo from reference. and reposition on reference point. readings for accuracy of one half sector on the dial. by rotating turret in opposite direction. Continue rotation Compare turret position and indicator Repeat the test 4.6.21 Clearing test.
10、4.6.21.1 Gun clear switch test. The weapon system sMl be fired. The gun SU automaticdly clear when the GUN CLEAR switch on the control assembly is placed in the AUTO position. switch is placed in the OPERATOR psition, the gun sball clea by pressing the action switch and actuating tie feeder declutch
11、ing solenoid to determine compliance with 3.3.19.1. When the GUN CLEAR 4.6.21.2 Brake-clear and brake switch test. The weapon system SU be checked for proper operation with the BRAKE-CLEAFlAND BRAXE switch in each position to determine compliance with 3.3.19.2. cartridges shali be used to check for
12、proper gun and declutching Seeder operation while the power system is on. position sha31 allow the gun drive motor to release and dummy rounds to be cycled through the gun by manually rotating the gun barrel cluster. Placing the switch in the BRPLKE-CLEAR position shall aUow the gun drive motor brak
13、e to release and energize the declutching feeder solenoid, preventing the rounds from being fed through the gun. is in center OFF position, the brake shall prevent the gun barrel cluster from being man the mandrel assembly into the muzzle adapter with the eyepiece of the tlescope in the horizonte3 p
14、osition and press to tighten the adapter and mandrel assembly in the barrel . Release the- azimuth drive mutor brakes an the elevation drive mtor brake by positioning the brake release aevers perpendicular to the motor axis. Sight through the boresight telescope on a distant point. Rotate the mandre
15、l aBsembly and boresight telescope 90 degrees to the horizontal position on the opposite side of the barrel. Sight through the boresight telescope to de- tesmine that the point sighted oninitially is still at the cross hairs. If the point is not on the cross hairs, the boresight kit is defective, im
16、properly assembled or improp- erly mounted. Manuauy position the gun go the Cros8 airs of the bore- sigt telescope are level with snd 3.5 mils to the right of the distant aiming point. Lock the azimuth and elevation drive mtor brakes and check that the gun is still properly aimed, Manually uncage th
17、e sight. AdJust the LAMP control assembly for a clear reticle in the sight. Remove only the front and right caps on top of the M6l sight. Adjust the socket head bolts on top of the sight to center the inner reticle of the M6l sight on the distant aiming point. adjustment is for azimuth. Move the eye
18、 up and down and right and left to check for parallax. If excessive pardlax is experienced, refer the sight to orga waX of the ML64 Mount. View through the ML34 sight and adjust the AZ boresight adjusting screw to bring the cross of the reticle into hor- izontal aignment wtth the distant aiming poin
19、t. View through the Ml94 sight and adjust the EZ boresight adjusting screw to bring the cross of the reticle into verticle dignment with the distant aiming point. The front adjustment is for elevation and the right I + “r- % * - 20 Provided by IHSNot for ResaleNo reproduction or networking permitted
20、 without license from IHS-,-,-flIL-G-4578L LO 7777706 0307825 7 m W. X. Y. 2. aa. bb cc 0 dd ee . ff . 35. hh. ii 33 kk. 11. mm nn. MIL-G-45981( WC ) Tighten clamping crews. Remove the boresight telescope, mandrel assembly, and in- stall the boresight telescope in the munt provided in the antenna. R
21、ewe muzzle adapter from No. 1 barrel. Loosen the elevation coupling clamp screw which is located on the gun elevation input shaft coupling to the radar antenna. zontal cross hair of the telescope reticle on the distant aiming point. Tighten the screw. Note: A second crew member must check that the s
22、ight remains centered on the distant aiming pint. Remove the access cover from the traverse boresight adjust- ment which is located on the reflector and feed heusing assenibly. Loosen the lock and turn the adjustment screw until the vertical cross hair on the telescope reticle in- tersects the diata
23、nt aiming point; then tighten the lock. Note: centered on the distant aiming point. Repeat steps (y) and (z) if necessary to center the reticle cross hairs. At the antenna stow control, place the MODE toggle switch to STOW. Using the TRAV to approximately 10 degrees . Place the MODE toggle switch to
24、 NORMAL. At the boresight telescope mounted on the antenna, observe that the cross mirs within the reticle are positioned on the distant aiming point. Repeat saeps (bb) through (ee) except in step (cc) drive the antenna to the right. At the stow control, place the MODE togge switch to STOW. Using th
25、e ELEV toggle switch,drive theantenna up approx- imately 10 degrees. mace the MODE toggle switch to NORM to move the hori- A second crew member must check that the sight remains On the antenna stow control, set the MAW switch to OFF. Remove the boresight telescope from theantenna reflector. -W;ution
26、: Assure that the sun is not shining directly into the AN/VPS-2B sight. Do not remve the AN/VPS lens ower during daylight hours. 1 ir . :i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-OO. pp. Open the SU aperture of the AN/VPS-= lens cover. View t
27、hrough the AN/VPs-sB night sight an adjust the azimuth and elevation boresight adjusting screws of the AN/VF?S-2B until the distant aiming point is centered on the top center dot of the AN/VPS-2B sight re-bicle. Set the SYSW POVER switch to the OFF position. On the drum drive assembly, pul out the s
28、hift pin handle and place the drum drive in the fire psition (chi% to F position). Recheck that there is nothing in the muzzle. qq. Cage the 61 sight. rr. ss. tt. 4.6.29 Hand brake test. The weapon system sball be subjected to the hand brake test to determine compliance with 3.3.27, unless documenta
29、ry evidence is supplied as proof that the brakes were tested during production by an equivalent static torque test with the brake assembly mounted to the running gear. 4.6.30 Towing and fording test. The weapon system SU be towed over terrain and road conditions at speeds specified in 3.3.28 using a
30、n M561, WO5 or M7i5 2 1/2 ton truck and coupler adapter (8438335) installed on the carriage. of, and shall comply with the requirements for fording of 3.3.29. - specified in h. 6.31-1 through 4.6.31.9 to determine compliance with 3.4.1 tbrough 3.4.9. ments may be used in lieu of laboratory produced
31、conditions. There shall be no evidence of corrosion, degradation of performance, or damge that would prevent the weapon system from performing its intended function. The weapon system shal be tested under the conditions 4.6.31 Environmental test. The wea-pon system chai1 be tested as Where advantage
32、ous, naturally occurring emiron- 4.6.S. Altitude test. The weapon mtem shall be tested to determine air transportability to 40,000 feet and operability to 10,ooO feet in accordance with Procedure I, Metbod 5O of MILSTD-810. 4.6.31.2 Temperature tests . 4.6.a.2.i High temperature test. The weapon sys
33、tem shall be tested when stabilized at 1250 after four hours in a storage temperature at 155? in accordance with Procedure I, Method 501 of MIL-STD-810. The weapon system shall be tested for operation at 120F in accordance with Procedure II, Method 501 of MIL-STD-810. for a low temperature sforage c
34、ondition of -40 F for 12 hours without 4.6.31.2.2 Low temperature test. The weBpon system SU be tested solar radiation in accordance with Procedure I, 810. At 00, -20q;and -k0F, the degradation in mre th 5, 10 rsi 15 percent, respectively. Method 502 of MILSTD- performance shall be not Provided by I
35、HSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-G-457L LO m 777770b O307827 2 m 1-G-45981 (WC ) 4.6.31.3 Rain test. The weapon system shall be exposed to rain and Wind conditions in accordance with Procedure I, Method 506, of MIL-STD-810. 4.6.31.4 Humidity t
36、est. The weapon system shall be subjected to humidity conditions for seven cycles of 12 hours each in accordance with Procedure I, Method 507 of MIL-STD-O. stand storage at 100 percent relative humidity at a temperature of 859. The weapon system shall with- 4.6.31.5 Fungus test. The weapon system sh
37、all be subjectd to fungus testing in accordance with Procedure I, Method 508 of MIL-STD- 810, unless documentary evidence is supplied as proof that only non- nutrient materials were used or that all parts were suitably treated to resist micro-organisms. 4.6.3.6 Salt fog test. The weapon system shall
38、 be subjected to a salt fog test in accordance with Procedure I, Method 509 of MIL-STD- 810. 4.6.31.7 Dust test. The weapon system shail be subjected to blowing dust, with particle size from 0.0001 to 0.0100 mm and wind speeds of i5 knots, in accordance with Procedure I, Method 510 of MIL-STD-810. 4
39、.6.31.8 Shock test. The weapon system shall be shock tested in accordance with Figure 516-1 of Procedure I, Basic Design Test for Ground Equipment, shock parameters b and d, Method 516 of MIL-STD-810. 4.6.31.9 Sand test. The weapon system shai.1 be operated at speeds up to 30 miles per hour in sandy
40、 terrain with wind speeds of 35 knots. The weapon system shall be operated, with the vehicle both stati0n.y and moving, in blowing sand having a pa2ticle size from 0.01 to 1.00 m, and with wind speeds of i5 knots or greater. Laboratory produced conditions shall be permitted for this test. 4.6.32 4.6
41、.32.l Weapon system. Interchangeability test procedures shall provlde for three weapon systems, from each twenty systems produced, to be disassembled an reassembled in a prearrwed pattern fromthe parts of each weapon system, divided into three groups of nonmating parts dis- tributed in three differe
42、nt trays, each containing a complete weapon system. imum exchange in mating paxts. The interchangeability test shall include mador subassemblies and repair parts for major subassemblies as specified in Table II. The weapon system shall be functionally tested arter re- assembly. Provided by IHSNot fo
43、r ResaleNo reproduction or networking permitted without license from IHS-,-,-1 MIL-G-45781 10 m 7977706 0307828 - 4 W Equipment Fxt Number Support sight assembly Equilibrator assembly (2) Brake and clear switch assembly Drive assembly, elevation Drive assembly, azimuth Azimuth in icator assenibly Re
44、coil adapter assembly (2) Muzzle clamp assembly Declutching feeder assembly Servo ampifier assembly (Az. Master) Distribution box assembly Sight current generator Slip ring assembly Running gear assembly 8436972 12007324 8437323 8436847 8437053 8438?53 8436802 8436804 843864-5 1200006 8438325 120002
45、39 8438355 84381 4.6.32.2 Repair part s. Two component pasts from each inspection lot of repair parts that are produced specifically for this system shall be tested for interchangeability in accordance with a Contractor submitted, Government reviewed plan. This .an shall be submitted to the Govern-
46、ment no later than 10 calender days prior to scheduled delivery of initial lot of repair psrbs. Any failure to demnstrate interchangeability shall cause rejection of the lot of parts. No hand refinements will be allowed for retest. Four parts shall be selected fmmthe reconditioned lots for interchan
47、geability testing. 4.6.33 Electromagnetic interference characteristics test . The weapon system SU be tested in accordance with the test methods of Mpl-STD-462 to determine comp3iance with 3.6. 4.6.33.1 System and radar compatibility test. With the system in the “RADAR MODE? .the gun mount shall be
48、traversed at maximum slew rate in both clockwise and counterwise direction. (The ready to fire light shall remain off to determine compliance with 3.6.i.) The gun mount electrical noise (radiated emission) shail be measured in an ambient condition, and during traversing the gun mount. The radiated e
49、mission measurement shall be taken in accordance with MIL-STD-462, Method REO5 at the broad band frequencies of 15OKHz to 1 GHz. shall not exceed four DB in accordance with the requirements of 3.6.1.1: The decible difference a.% - - 24 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-95781 LO 7977906 0307827 b -1 a. If the DB increase is less than 4 DB w
