1、MIL-C-63055A (7) 13 7777706 03Ll30b O , MIL-C-6 3 055A (AR) AMENDMENT 7 AMENDMENT 6 a 1 February 1985 MILITARY SPECIFICATION CARTRIDFE, OSIIIIII, APFSDS-T, M735 LOADING, ASSEMBLING, AND PACKING This Amendment forms part of Military Specification MIL-C-63055A(AR), dated 29 February 1980, and is appro
2、ved for use within the U.S. Army Arrnament,Muniti- Chemical Command and is available for use by all Departments and Agencies of the Department of Defense. nd PAGE 2 U nde r Spec i fi c a t ions, Mi 1 ilta r y : After MIL-P-63074, Add: “MIL-P-70465 Plug and Disc Assembly, 8597489“. PAGE 2 * Under Sta
3、ndards Military, add: “MIL-STD-1235 - Single and Multi-Level Continuous Sampling Procedures and Tabies for Inspection by Attributes“ * 2.2.2 Other Government documents, drawings, and publications. Under drawings, add: “12631100 - Packing and Marking for Container, Ammo, Metal, for Ctg, 105mm, APFCDS
4、-T, M735/M774“ PAGE 3 3.1.2 (U) Pluq and disc assembly.: Add new paragraph 3.1.2 as follows: “3.1.2 (U) Plug and disc assembly. Plug and disc assemblies used for assembly of M735 cartridges shall be inspected and accepted in accordance with MIL-P-70465. “ Page 1 of 13 AMSMC N/A DISTRIBUTION STATEMEN
5、T A. Approved for public release; -distribution is uZ?fmi$:. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-63055A (7) 13 = 7777706 0343069 2 = MIL-C-63055A (AR) AMENDNENT 7 a *. . 3.4.3 (U) Muzzle veoAity.: * , t Delete “4965“ and substitute
6、“4975“. Delete “4885“ and substitute “4875“. Delete “15“ and substitute “21“. 3.4.4 (C) Target ,impact dispersion.: Delete “ “ and sCdst tute “ II . * PAGE 5 _-I_. . - TABLE I: Under “Cartri,dge, 105mm, APFSDS-T, M735“ add: I._-I- - “Radiographic examination 35 3.2 4.5.10.1“. PAGE 9 4.4.2.1 (U) Proj
7、ectile prior to assembly of plug and disc assembly, Under “DRAWING NUMBER“ add: “or 9328524“ . PAGE 10 - _.-. “.*. . 4.4.2.2: Major 101: Delete “Tracer plug and disc assembly fails to withstand minimim assembly torque.“ and substitute “Tracer plq and disc assembly fails to withstand reapplication of
8、 assembly tor que . “ PAGE 12 4.4.2.4 (U) Case, cartridqe and liner assembly.: Delete in its entirety and substitute the following: “Cri tical None defined Major 101. Liner installed incorrectly, in that surface exposed is not that which is completely covered with film,0.40%.3.2.Visual 102. Adhesive
9、 missing. . 0;40%.3,2.Visual 103, Gap between liner and case, 104. Depth of liner from mouth 105. Evidence of contamination in excessive.,.,.lOO%.3.2.isual of case . 0.40%.3.2aGage cartridge .case prior to liner insertion,lO%3.2.visual 3 Provided by IHSNot for ResaleNo reproduction or networking per
10、mitted without license from IHS-,-,-MIL-C-63055A (7) 13 7777706 0343070 9 W MIL-C-63055A (AR) AMENDMENT 7 .i L Minor 201. Ends of cloth ovriap 0.65%.3.2.Visual 202. Evidence of poor - workmanship.,.O.65%.3.7.Visualn PAGE 14 i 4.4.2.6: Delete: Minor defect 201 in its entirety. Add-Ma-jo-de-f-ec-;L-O8
11、-.-P r imer stake (s)-miss.ing Or improper, loo%, 3.2, Visual.“ PAGE 15 4.4.2.7 (U) Cartridge, 105MM, APFSDS-T, M735: Major 102, Column 2 “Examination or Test“: Delete “True position of windshield tip“ and substitute “Runout of windshield tip“ Delete Major 108 in its entirety. PAGE 16 4.4.2.8 (U) Ca
12、rtridge, 105MM APFSDS-T, M735 Destructive Lot Acceptance Test.: follows: Add new Major defects 105 and 106 as “105. e. Misfire 3.4.6.1 4.5.9.1 106. Radiographic or fluoroscopic examination 10 3.2 4.5,lO 2“ PAGE 20 4.4.2.12 (U) Shield, Water-repellant.: Delete minor characteristlcs 201 and 202 in the
13、ir entirety and substitute: “ 201 True position of recessed slots (nine places) 20 2 Depth of recessed slots (nine places) 0.65% 3.2 Gage 0.65% 3.2 Gage“ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-63055A (7) 13 = 7379906 03Lf3071 O = ,*. M
14、IL-C- 6 30 55A (AR) AMENDMENT 7 / , PAE 23 c * Add new paragraphs 4.4.2.16, page 23A (included)# and 4 4 . 2,. 17, page 23B (included) . k, PAGE 24 4.4.3.11 (U) First article=.: Deiete “Code Letter J“ and 4.4.3.1.2 () Production o.ts-.-:-De-“COde Letter G“ and substitute “Code Letter H“. - _.- - - -
15、subXFi-tute “Code Letter F“. . PAGE 26 4.5.9 (U) Proving ground functional tests., ninth sentbnce: Delete in entiretv and substitute: “A thermal shield shall be used on all gui tubes utilized for Target Impact Dispersion testing. If a thermal shield is not available, the gun tubes shall be painted w
16、hite and a sun shield shall be utilized.“ 4.5.9.2 (U) Tarqet impact dispersion.: Delete 4.5.9.2 and substitute: “4.5.9.2 (U) Tarqet impact dispersion. These tests e- shall be performed at a proving ground in accordance with the applicable Acceptance Test Procedure. a. (U) All firings for target impa
17、ct dispersion (TID) shall be from a fixed type facility mount utilizing a muzzle boresight or a properly maintained service tank with operable fire control and fixtured with an M68 gun tube. When firing from a tank, the tanks recoil and mechanical fire control systems shall be inspected prior to tes
18、ting, Necessary repairs and replacements shall be.effected prior to initiation of testing. b, (U) The ballistic samples, when assembled as cartridges, shall be electrically fired using energy equivalent to the service tanks firing circuit, c. (U) Testing shall be conducted with 105MM, M68 gun tubes.
19、 sunscreen or thermal sleeve shall be utilized, Each phase (precision, hot temperature, cold temperature and First Article worn tube test) shall have its own gun tube dedicated for use. The remaining life of the tubes utilized in each phase shall iiot exceed the wear limits given in 6.5. All gun tub
20、es shall be painted white or a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-63055A (7) 13 9999706 03Li3072 2 E MIL-C-6 30 5 5A (AR) AMENDMENT 7 d. (U) Tubes used for all phases shall be inspected for adequacy prior to initiating eech firing
21、prpgram: 1. For the precision and cold tejpetaturelphase , the gun tube shall be inspected for adequacy by performing, at a minimum, pullover gaging and visual inspection. At nominal midlife, the gun tube used for this phase shall be borescoped and shall undergo complete stargage and magnetic par ti
22、 cle i ns pec t ions. 2; For the hot temperature and worn tbbe (First Article only) phases, the gun tubes utilized shall be inspection, pullover gaging and complete sFargage-and- borescope inspections. At nominal midlife -the tubes utilized for hot temperature testing shall be inspected for adequacy
23、 by performing rtiagnetic particle testing. e. (U) All gun tubes shall be inspected when unexpected occurrences, such as projectile breakup, cartridge case rupture, etc., are experienced during any of the test phases. Required -inspections after these instances shall include visual inspection, pullo
24、ver gaging and complete stmargage, borescope and magnetic particle i ns pec t i on . sample cartridges specified herein at a 20 foot by 20 foot (6.1 by 6.1 meters) target located 2000 meters from the gun muzzle. The target shall be made of a material approved by the technical agency. Targets used fo
25、r hot firing phases shall allow determination of fin hardcoat degradation and fin burning. instrumentation checkout muzzle velocity stabilization and spotting purposes will be fired prior to the start of the test a forming, at a minimumr visual -_ .wwY-Per f. (U) TID tests shall be conducted by firi
26、ng 9. (U) A sufficient number of rounds for h. (U) When firing from a fixed mount, muzzle boresighting and aiming procedures shall be used to aim the weapon so the expected point of impact will be the center of the target. The center of impact of at least three consecutivly fired spotter rounds must
27、 be.within a 1 meter squie ?oGated at the center of the target before firing the control or test rounds. 5 i . f Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-63055A (7) 13 W 7777706 03q3073 Li E MIL-C-63055A (AR) AMENDMENT 7 i. (U) When firi
28、ng from a fixed mount, odce ,the gun has been spotted on the target for a test or control group,. the elevation and deflection of the weapon shall remain the same for that test group. Changes in the muzzle aiming point from roud to round, shall be recorded -by adjusting settings on the boresight to
29、get back onto the original aiming mark. following firing procedures shall be utilized: J. (U) When firing from a service tank, the I 1, Boresight the weapan on the center of target and apply super elevation with quadrant. Fire spotter rounds to assure the weapon is zeroed on the target center. The q
30、roup center of impact for a minimum of three consecutive target hits within a one meter square of the target center. is required. Finalize reticle setting on aiming stake. After the target has been spotted for a shot group, every effort should be made to keep the elevation and deflection of the weap
31、on the same for the shot group. 2. After loading and locking a round in the chamber, the gun tube shall be traversed left of target center, dropped down below target center, traversed to the opposite side of target center, elevated to target center elevation, and traversed onto target center. The di
32、stance traversed and dropped should be sufficient to remove the backlash from the system. If the sight is above or beyond target center, do not reverse di.rection of gun tube movement but repeat the sequence. minute shall elapse from final sightinq until the round is fired. If the one minute is exce
33、eded, the weapon shall be re-siqhted prior to firing . 3. During dispersion testing a maximum of one k. (U) Target impact dispersion testing shall be fired in the following manner: five control rounds followed by ten test rounds followed by five control rounds. For data analysis purposes, test and c
34、ontrol groups shall be broken down into five round groups where possible (group sizes will vary if test is truncated). The standard , deviations for the test and control groups shall be poled by the equation of 6.4. Provided by IHSNot for ResaleNo reproduction or networking permitted without license
35、 from IHS-,-,-MIL-C-63055A (7) 13 7777906 034307Lt b MIL-C-63055A (AR) AMENDMENT 7 1, (U) The fime interval between rounds (test, control and spotter) shall be, the .miriimum time possible, with a maximum ofl0 minutes between rounds permitted. this maximum time is exceeded, then the testand cdntrol
36、groups shall be truncated. The leftover rounds shall be fired as part of the next: group or as a new group as applicable, During dispersion testing from a service tank a maftimum of one minute shall elapse.from final sighti- until the round is fired, If more than a thirty minute lapse occurs between
37、 group firings, or if there was an indication of trend in the previous groups target impacts to move away from the center of the target, then the weapon shall be re-zeroed on target center using the procedures required to establish the original test conditions. be measured and recorded for each cart
38、ridge, Pressure shall be obtained using two copper crusher gages placed in the base of the cartridge case. Gage numbers shall be recorded for each cartridge. If m. (U) Muzzle velocity and chamber pressure shall n. (U) For each test round, spotter, and control round a clearly defined image (35mm smea
39、r) of the initial flight of the projectile (reference rounds, control rounds, test rounds, etc.) shall be recorded at 12,O 5 0.5 feet (3.66 + 0.15 meters) and 35.0 5 0.5 feet (10168 f 0.15 meters)- forward of the gun muzFle. placed at the target to observe impacts during testing. This data shall be
40、recorded for information only. o1 (U) A 111 camera or forward observer shall be p. (U) Tracer flight shall be observed to the target. Any abnormality of flight is to be described (cork screwing, tumbling, yaw, etc.), as well as target impact information (hit the target, short by 100 meters, left of
41、target, etc.) If a round misses the target with no abnormality of flight, a statement to that effect shoyld also be made. q. (U) Observations shall be made for conformance to all requirements. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-b
42、3055A (7) 13 9 7797706 03!l3075 = MIL-C-63055A (AR) AMENDMENT 7 r. (U) All recorded information shall be provided in the firing report and submitted to the procuring activity (see 6.2.3). This shall include, as a minimum, wind velocities and wind directions at the gun tube, gun tube number, chamber
43、pressure, muzzle velocity, impact co-ordinates, misfire (see 3.4.6.1) and hangfire (see 3.46.2), standard deviation (vertical and horizontal dispersion in mils), maximum spread (vertical and horizontal dispersion in centimeters), center of impact for test and control groups and metal parts security.
44、 weather that may make observations inaccurate or otherwise gusts .5 knots greater than the surface crosswind speed exist. t. (U) In the event of adverse test conditions or failure of the control rounds to meet the requirements for the control round configuration when test rounds fail to meet the re
45、quirements of 3.4.3, disposition of the lot being tested shall be referred to the technical agency (see 6.8). Retesting might be required in such instances.“ , 4 s. (U) Testing shall not be performed during affect the results of the test. Firings shall not be .- . .- ptzPformedwhxa-surface crosswind
46、 speed of 10 knots or when *3 PAGE 27 4.5.9.2.1 (U) First article. Delete in its edtirety and substitute the following: “Five spotter cartridges, twenty test cartridges and twenty control cartridges shall be conditione8 at +700F - + 2.50F (+21.1 2 1.4OC). The firing sequence shall be a minimum of th
47、ree spotter rounds followed by alternating control and test rounds. Any lot whose test group fails the applicable requirements shall be rejected.“ substitute the following: “Five spotter cartridges, ten test cartridges and ten control cartridges shall be conditioned at +700F 2.SF (t21.1 1,4OC). The
48、firing sequence shall be a mintmum of three spotter rounds followed by alternating control and test rounds, Any lot whose test group fails the applicable requirements shall be rejected.“ 4.5.9.2.2 (U) Production Lots.: Delete in its entirety and 8 Provided by IHSNot for ResaleNo reproduction or netw
49、orking permitted without license from IHS-,-,-MIL-C-b3055A (7) 13 m 7977706 03q3076 T m MIL-C-63055A (AR) AMENDMENT 7 PAGE 28 4.5.9.4 (U) Armor penetration phase.: Delete 4.5.9.4 in its Add new paragraphs 4.5.10, 4.5.10.1 and 4.5.10.2 as follows: entirety. “4.5.10 (U) Radiographic examination.“ “4.5.10.1 (U) First Article. All cartrid
