1、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIGC-46942 (MU) (Copies of specifications, standards, drawings and publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity OP
2、as directed by the contracting officer.) 2.2 Other publications. The following doc- ument forms a part of this specification to the extent specified herein. Unless other- wise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. INTERSTATE COMMERCE COM-
3、MISSION - 49 CFR 71-78 - The Interstate Commerce Commission Rules and Regdations for the T,rans- portation of Explosives and Other Dangerous Articles. (The Interstate Commerce Commission Regulations are now a part of the Code of Federal Regulations available from the Super- intendent of Documents, G
4、overnment Printing Office, Washington 25, D. C. Orders for the above publication should cite “49 CFR 71-78.“). 3, REQUIREMENTS 3.1 General. Materials, parts and assem- blies shall comply with all the requirements specified on the applicable drawings and specifications. 3.2 Torque requirements. Torqu
5、e require- ments shall be as specified in Table I. No movement or deformation shall OCCUF upon application of the breakaway torque. TABLE I Breakaway Componmnts (inch pmmds) (minimum) Seating er bottolriing (inch goaluls) Block and Inside Tube after insertion of Cartridge iiii.ii.iiii,., 400 -k 50 3
6、00 Stop Ring and Trunnion 500 + 50 400 3.3 Assembly. 3.3.1 The flange face surface of the plug shall be in complete contact with the car- tridge. 3.3.2 The block sh,all be free to rotate 360 degrees in the counterclockwise direction. 3.4 Residual magnetism. The catapult shall not deflect the indicat
7、or of the compass more than 3 degrees in either direction when passed in front of the compass at a distance of 6 inches. 3.5 Functional. 3.5.1 Ballhtics. Catapult loaded with accepted M28A1 cartridges shall propel a 300 pound mass vertically and shall comply with the requirements listed in Table II
8、(see 6.3). TABLE II Velocitu Rats of change (min.) Acoelerattoii, Max. load of acceleration Ignition deay (wax.) 100g/sec 160 milliseconds 65“ to 76F 60 fps 2og 18g l7Og/sec 150 milliseconds 160“ to 165F 64 fps 2k 24g 2Og/sec 150 milliseconds . Tenweratwe (see 6.3) presslire time cell (max.) (see 6.
9、2) -65“ to -70F 48 fps 16g 14g 3.5.2 The catapult shall not fail to fire. 3.5“ The catapult shall function without 3.6 Workmanship. The requirements for workmanship are as specified on the appli- cable clrawings, specifications and - the follow- /- 7 mechanical failure (see 6.1). ing : Provided by I
10、HSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.6.1 Metal defeat. All components shall be free from cracks, splits, cold shuts, in- clusions, porosity or any similar defect. 3.6.2 Bwr. No part shall have a burr which might; interfere with the assembly or funcio
11、n of the item or which might be in- jurious to personnel handling the item. 3.6.3 Foreign. matter. No part or assembly shall contain chips, dirt, grease, rust, cor- rosion or any other foreign matter, 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibiiity for inspection. Unless otherwise specified in th
12、e contract or pur- chase order, the supplier is responsible for the performance of all inspection require- ments as specified herein. Except as other- wise specified, the supplier may utilize his own facilities or any commercial laboratory acceptable to the Government. The Govern- ment reserves the
13、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. 4.1.1 Quulity assurance terms and de#C8593691, D8593693, i. 08593699 and 08593700. ,. . Method of Defect inspection C
14、rtical: ., Major: 1. Seal on trunnion missing Manahl/VisuaJ. 101. Burr . Visual 102. Foreign matter Visual Icfhw: None. defined. 4.2.2.6 Assembly, Dzog. F8593686 CivitTt Stop Rhg not engaged With Trzcnn;Eon). Defect . Method of inspection Critical: Major: 1. Tubes not free to slide Manual None defin
15、ed. Minor: . , None defined. 1 4.2.2.7 Assembly, Dzug. F8593686. Critical : Defect Method of * inbpection I. Mxed catapults . : . Visual 2. Marking missing, incorrect or illegible Visual itla jor : 101. Total length, max Gage 102. Diameter for mounting hole Gage 103. Length from cap to mounting hole
16、 i Ga- 104. Length between mounting points Gage 106. Block not free to rotate 360 degrees Mqnual 106. Burr Visual 107. Foreign matter Visual Minor: 201. Location of labels, incorrect Visual 202. Shipping plug missing Visual 203. Ordnance seal missing or insecure Visu91 204. Protective finish inadequ
17、ate or defective Visual 4.2.2.0 Amwmntioin, Oontainw, Fiber, Dwg. F859737Y. Method of Defect inspection Cytical: None defined. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILC-46942 (MU) Defeot Method of inspection Major : Minor: None defined.
18、201. Gap between body and coveit, max . Manual 202. Contnts loose . Manual 203. Metal ends loose or distorted Mahual 204. Cut or damaged through all impregnated layers . Visual 206. Marking missing, incorrect or illegible Visual 206. Tape incomplete or badly wrinkled Visual 207. Length of tear tab,
19、min. Visual 208. Color of tape incorrect Visual 4.2.2.9 Bog:, Packing, Ammunition, Dzvg. F8797378. Defect Crt ical : None defined. None defined. . Major: aletlbod of inspection Mino?,: 201, Contents loose Manual 202. Hardware missing, loose, broken OP impropei*ly engaged Visual/Manual 203. Strapping
20、 missing, loose, broken or improperly assembled Visual/Manual 204. Contents of box exposed Visual 205. Box damaged Visual 206. Marking misleading or unidentifiable . Visual 207. Nuinber of units incorrect . Visual 208. Cai* seal missing, unsealed 01% improperly positioned Visual 4.2.3 Inspection tes
21、ting. The following tests shall be performed in accordance with 43, except as provided in Specification MIL 1-45208. 4.2.3.1 B?eakaway torque. A breakaway torque shall be applied toeach catapult threaded joint listed in 3.2. Failure of any unit to comply with the requirements of Table I shall be cau
22、se for rejection of the catapult. 4.2.3.2 Residual magnern. Each catapult shall be tested for excessive residual mag- netism, Failure of any catapult to comply with the requirements of 3.4 shall be cause for rejection of the catapult. 4.2.3.3 Functional. The following test shall be performed by the
23、Government : 4.2.3.3.1 Ballistics. Fourteen units shall be tested to determine compliance with the re- quirements of 3.5.1, 3.5.2 and 3.5.3. The units shall be temperature conditioned as provided in Table IV and 4.3.3.1.1. The variables sampling plan of MIL-STD-414, Example C-2, for AQL listed in Ta
24、ble IV shall be used for each sample of 10 units. Failure of any unit to comply with the re- quirements of 3.6.1, 3.5.2 ana 3.5.3 or failure of a sample to meet the criteria of the variables sampling plan shall be cause for rejection of the lot. TABLE IV Temperatwe Sample size AQL -65“ to -70“ F 2 0
25、.66% 65“ to 70“ F io 0.65% 160“ to 166F 2 0.65% Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-46942 33 9979906 4.2.4 Inspection equpment. The exami- nation and tests shall be made using equip- ment listed on IEL-8593686, except as pro- vided
26、in Specification MIL-1-45208, 4.3 Test methods and procedures. 4.3.1 Brenka.way tolqzce. A torque wrench set at the torque requirement specified in 3.2 shall be used to determine the adequacy of the joints. The assembly shall be secured in the fixture prior- to applicatron of the torque. 4.3.2 Resid
27、ual magnetism. The catapult shall be tested for excessive residual mag- netism in an area free of local magnetic effects by placing the catapult 6 inches from, and at the same height as, the com- pass in a north-south horizontal position (trunnion end at south) with the compass set in an east-west h
28、eading as shown in Figure I. The catapult shall be moved slowly past the compass in a longitudinal direcfjon for its entire length, rotated 180 degrees in the horizontal position about its longi- tudinal axis and moved slowly back past the compass. 4.3.3 Ftmctional. 4.3.3.1 BaZZkt.ics. The catapult
29、shall be rigidly supported in the fixture by the mounting points and fired with an M3A1 Initiator connected to the catapult with 10 feet of aircraft hose, size 4, as specified in Standard MS-28741. The catapult shall comply with the requirements of 3.5. The catapult shall be tested within 10 minutes
30、 after removal from the conditioning cham- ber. When this time limit is exceeded, the catapult shall be reconditioned at the orig- inal temperature. 4.3.3.1.1 Tempwatrzcre conditzo?ki,g. A standard M5Al Catapult, loacled with a dummy M28A1 Cartridge containing a tem- perature sensitive element, shal
31、l be placed ii the conditioning chamber at the same 0334852 4 m LvI+-C46942 (MU) time as the samples. The conditioning time shall be a minimum of one hour longer th,an the time necessary to bring the element con- tained in the dummy cartridge to the re- quired temperature. 5. PREPARATION FOR DELIVER
32、Y 5.1 Packing and marking. (Level A.) Packing and marking shall be in accordance with Drawings F8797377 and F8797378. 5.2 Delivery. Delivery shall be in accord- ance with Interstate Commerce Commission Regulations cited in 2.2. 5.3 Data cards. Data card information shall be as specifiea in Specifica
33、tion MIL- A-2650. 6. NOTES 6.1 A “mechanical failure” is defined as any deformation or beakage of a part, the occurrence of which is other than a design function. 6.2 “Ignition delay” is defined as the time that elapses between the firing of the cas- tridge primer and the beginning of the con- tinuo
34、us pressure rise on the thrust time record. 6.3 Velocity applies at tube separation. Notice. When Government drawings, specifications, or other data are used for any purpose other than in connection with a definitely related Government pro- curement operation, the United States Government thereby in
35、curs no responsibility nor any obligation whatsoever; and the fact that the Government may have formulated, furnished, or in any way supplied the said drawings, specifications, or other data is not to be regarded by implication or otherwise as in any manner licensing the holder or any other person o
36、r corporation, or conveying any rights or permission JO manufacture, use, or sell any patented invention that may in any way be related thereto. Custodian: Preparing activity : Army-MU Army-MU Project No. 375-A555 7 _ - -F .= - 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-,-,-
