1、MIL-I-44LO 13 M 777770b 0320035 2 9 NILITARY SPECIFICATION INITIATOR, POPELLAXT ACTUATED, DELAY, JAU-4fA25 AS SE?IBLY This specification is approved or use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 This specification covers Initiator, Propellant Actuated, Delay JAU-4
2、IA25, Assembly loaded with IIA pellets, an X42 primer and a delay elenient for use in conjunction with other propellant actuated devices in aircrew emergency e scape systems. 2. APPLICAISLE DDCWlENT 2.1 The following documents of the issue in effect on date of invitation or bids or request for propo
3、sal, form a part of this Specification to the extent specified herein. SPCCIFICATION Military XIL-A-2550 - Ar;inunition and Special Meapons y General IL-1-2557 9 - Hose Assenbly Tetraf luoroethyleiic, Lieh Specification For Temperature Power Plant y Aiscraf t STAXDARDS Zfilitary MIL-STD-105 - Sampli
4、ng Procedures and Tables for Inspection NIL-STD-109 - Quality Assurance Terns and Defiiiitionc MIL-STD-4 13 by Attributes - Visual Inspection Guide Lor Rubber O-Rings Armament Comnand F11731740 - Initiator, Propellant hctuate ilelay , JAU-4/A25 D9280891 - Gox, Fiberboard (Inner) , Packin?, Amaunitio
5、n Il9280892 - Box, Packing, Aimiunition for Initiator, Delay D9280893 - SOS, Fiberboard (Outer), Alternative Packing, LI 11731740 - Inspection Equipment List for Initiator, Assenbly for Initiator, Delay (Gas-Subriinisture) (Gas-Subminiature) Ammunition for Initiator, Delay (Gas-Subniniature) Propell
6、ant Actuated, Dela7, JAE-4/1225 Assembly FSC 1377 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-,-,-MIL-1-48410 13 7779906 0320037 b m 3.5 Mechanical Prop
7、erties.-Mechanical properties required by the dratring shall be uniform throughout the part within specified tolerances. 3.6 Shear Pin Strength.-The shear pin after application of protective finish shall shear when a load of 41 +_ 5 pounds is applied at the steady rate of 0.125 inch per minute. . 3.
8、7 Protective finish.-Protective finish shall be in accordance with the applicable specifications and drawings and shall apply to all surfaces of the component regardless of contour. 3.8 riemetic seal.-The assembled initiator y less the firins mechanism shall withstand 14 PSI , internal external pres
9、sure differential with a maximum permissible leak rate of 1 X lo- cubic centimeters per second. - 3.9 !JoJkri.anship. -The requirements for workmanship are as specified on the applicable drawings y referenced Specifications and the following: 3.9.1 Metal defects.-The part shall be frez from cracks,
10、splits, cold shuts, inclusions, porosity or other retal defects. 3.9.2 =.-The part shall not have a burr which nizttt be injurious to personnel handling the item. 3.9.3 -reign matte?.-The part or assembly shall not contain cliips, dirt, grease, oil, rust, corrosion or other foreign matter. 4. QUALIT
11、Y ASSUAXCK PTOVISIOXC 4.1 ResponsibiliQ for inspection.- Unless otherwise specif icd in the con- tract or purchase order, the supplier is responsible for tlie perforxime of all inspection requirements as specified herein. Except as otherwise specified in the contract or order, the supplier may use h
12、is own or any other facilities suitable for the performance of the inspection requireiccnts specified herein, unless disapproved by the Government. The Govern:iient reserves the right to per- form any of the inspections set forth in the specification where such inspections are deemed necessary to as
13、sure supplies and services conform to prescribed re- quirements. 4.1.1 Quality assurance terms and definitions.-Reference shall be siade to MIL-STD-109 to define quality assurance terms used. 4.1.2 Inspection.-Inspection shall be in accordance .with 1U.L-A-2550. : 4.2 First article sampls. 4.2.1 Ini
14、tial production sample-.-& the beginning of regular production, a sample shall be submitted in accordance with contract requirements and shall consist of 21 assembled initiators for ballistic tests, 50 shear pins, and LO sets of un- assembled parts for visual and dimensional examination and tests. 3
15、 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-,-,-$1 IL - I -4 8 4 1 O (XU) TABLE III II_- Total AllowabLeDefects per Saaple Size SamLle Size for 110 150
16、 225 300 Najor Defects - - - - - - - II No. of Characteristics in Class 2- 3 4- 7 8 - 19 20 - 43 Over 43 1 2 3 2 3 4 3 4 5 4 5 6 G 8 11 4 5 7 10 14 Sample Size for,Xinor 110 15 O 235 300 Defects - - - - - - - ._II No. of CharacteristicGn Class 2- 3 4- 7 8 - 1U 17 - 48 Over 48 2 3 4 5 3 4 5 7 4 5 8 1
17、0 6 3 11 14 8 11 17 20 4.3.2.1 Pin, Firing, DC117364l-covering a detail of Dq+.-l1731492 Defect Xethod of Inspection -I- CRITICAL 1. Dianeter of striker Gage . 2. Length of striker Gage 3. ?letal defective K4JOR Visual 101. 102. 103. 104 105. 106 107. 108. 109. 110 * 111. . 112. 113. 114. True posit
18、ion of “O Concentricity of striker with body True positon of shear pin hole with body Diameter of “O“ ring groove, n:in. Diameter of body, min. Diameter of shear pin hole, max. Depth of shear pin hole, max. Width of “O“ ring. groove Location of shear pin hole Permissible variation of 0 ring groove S
19、pherical radius of tip Protective finish inadequate or defective Burr or sharp corner, except where permitted Foreign matter ring groove with body Gage Gage Gage Gage Gage Gage Gage - Gage Gage Gage Gage Visual Visual Visual 5 Provided by IHSNot for ResaleNo reproduction or networking permitted with
20、out license from IHS-,-,-202. Diameter of body, max. 203. Diaineter of shear nin hole, min. . 204. Depth of shear pin hole, min. 205. Vlidth of slot 206. Depth of slot 207. Total length 208. 209. Surface finish improper, except as otlierrise Length of body to “O“ ring groove classified I 4 .3.2 .2 H
21、ou s ifig,-Efinor diameter of internal thread, niax. 103. True position of mounting holes with internal thread 104. L-ength of effective thread, min. 105. Unith of thread, max. 106. Hetal defective -107. Ptotective fi.nish inadequate or defective 108. Burr 109. Foreign matter XINOR Gage Gage Gage Ga
22、ge Gage Gage Visual Visual Visual 201“ 202. 203. 204. 205. 206. 207. 208. 209. 210. Diameter of iiiounting holes Length across front end of bracket Total length Location of mounting holes Location of .large hole lleight of shoulder Total height including boss Straight dianieter at thread end Radii i
23、ncorrect Surface finish iniproper . “ Gage Gase Gage Gage Gage Gag e Cage Gage Visual Visual 8 . L -. . 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-,-,-
24、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-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.3.4
25、Inspection ment.-The exanination and tests sliall be made using equipment listed on IEL 11731740. 4.4 =st methods and procecf_u_res_L 4.4.1 Shear pin strength.-after application of protective finish, the pin shall be subjected to the shear strength test to detemine cosipliance with 3.6. testing mach
26、ine. The test shall be performed in the fixture in conjunction with a tensile 4.4.2 Protective finish.-Test procedures for protective finish shall be in accordance with the specification referenced on tlie component drawing. 4.4.3 Breakaway torque-. -A torque wrench cet at the torque requireineiit s
27、pecified in 3.2 shall be used in conjunction with the fixture to determine the adequacy of the joint. The torques shall be applied (1) between the female body and male body and (2) betveen the iwle or feniale body and the body and (3) between the body aiid the housitic. 4.4.4 Residual ma$netisri_.-T
28、he initiator shall be tested for excessive residual magnetism using an approved coinpass in an area free of local magnetic effects, by placing the initiator 6 inches from and at the same height as the compass in a north-south horizontal position (housing end at south) with the coinpass set in an eas
29、t-west heading. moved slowly past tlie compass in a longitudinal direction for its entire length. rotated 90 degrees in the horizontal position about its lonitudiiial axis and .moved slowly back past the conpass. 90 degree rotation of the initiator. The initiator shall be Tliis procedure shall be re
30、peated for each 4.4.5 Henlietic seal.-The nethod and procedure for pcrorininc the hermetic seal test shall be as approved by the Government. 4.4.6 Functional 4.4.6.1 Gal1istics.-The test sample shall be rigidly supported in the fixture and shall be tested within five (5) niinutes after its removal f
31、rom the conditioning chamber. !:%en this time limit is exceeded the sa:nple shall be reconditioned in accordance with 4.4.4.1.1. 4.4.6.1.1 Temperature conditim.n.ng.-A standard JAU-4/A Initiator loaded with dummy IIA pellets and a dummy X42 primer and delay elerient containing a temperature sensitiv
32、e element shall be placed in the conditioning chamber at the same time as the samples. The conditioning tine shall be a minimum of 1 hour longer than the time necessary to bring the element contained in the dummy cartridge to the required temperature. 13 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-,-,-
