1、MIL-I-147 23 = 9779706 02705L 7 I MIL-I-l4889(MU) 20 January 1971 MILITARY SPECIFICATION INITIATOR, CARTRIDGE ACTUATED: DELAY m92 ASSEMBLY 1. SCOPE I 5: 1.1 This specification covers Initiator, Cartridge Actuated, Delay, - 1 XM92, Assembly, loaded with Cartridge, Delay, M155, for use in conjunction
2、with other propellant actuated devices in aircrew emergency escape systems. Y i 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of in- vitation for bids or request for proposal, form a part of this specifi- cation to the extent specified herein: SPECIFICATIONS Mili
3、tary MIL -A-2550 - Ammunition and Special Weapons, General Specification For STANDARDS Military MIL-105 MIL-STD-109 MC28741 - Sampling Procedures and Tables for Inspection - Quality Assurance Terms and Definitions - Hose Assembly, Detachable End Fitting by Attributes Medium Pressure DRAWINGS Munitio
4、ns Command Fi0551995 C8798142 - Initiator, Cartridge Actuated, Delay, XM92, As s embly - Box, Packing, Ammunition for Initiator, Delay, Cart-ridge Actuated, M10, M30A1, M31, M32A1, M42 M43A1, M72, XM92 or M114 with Cartridge in Fiber Container , M398 Initiator, Delay, M31, M32A1, M42, M43A1, M72, XM
5、92 or MI14 with Cartridge Cartridge Actuated, Delay, XM92, Assembly. - Container, Ammunition, Fiber, M398 for - Inspection Equipment List for Initiator, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or n
6、etworking permitted without license from IHS-,-,-3.6.3 The initiator shall function without mechanical hilare - (see 6.2). 3.7 Workmanship.- The requirements for Workmanship are as speci?ied on the applicable drawings, referenced specifications and the following: * 3-7.1 Metal Defects.- The componen
7、t shall be free from cracks, splits, cold shuts, inclusions, porosity or other metal defects. 3.7.2 -.- The part shall not have a burr which might interfere * with the assembly or function of the Stem or which might be injurious to personnel handling the item. 3.7.3 Foreign . F10551995 CRITICAL 1. A
8、ny part missing 2, improper assembly 3, Marking missing, incorrect or illegible xTayl/& Visual XrayL/& Visual Visual - 1/ The cartridge shall be x-rayed with the long axis of the cartridge perpendicular to the rays of the machine, identified, shall be forwarded to the procuring activity. The x-ray n
9、egatives, properly 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.2.2.2 (Continued) - 101. 102. 103, 104. Torque application of initiator Length of initiator pin extension Length from face of initiator cap to end of gas port, max Torque applicat
10、ion of cartridge retainer with firing pin housing,improper * 1 201 202 Total length 203 Height of boss, max 204 Location of label incorrect 205 206 Total length from end of cap to end of gas port, max Set screw missing or loose Coating compound missinR from set screw CRITICAL - None defined MAJOR No
11、ne defined MINOR 20 1 202 203 204 205 206 207 208 Gap between body and cover, max Contents loose Metal ends loose or distorted Cut or damaged through all impregnated layers Marking missing, incorrect or illegible Tape incomplete or badly wrinkled Length of tear tab, min Colar of tape incorrect MIL-I
12、- 14889(MU) Method of Inspection Gage Gage Gage Gage Visual Gage Gage Gw3e Visual Visual Visual Manua 1 Manua 1 Ma nua 1 Visual Vi sua 1 Visual Vi sua 1 Visual 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4, Q. 2.4 Box , Packing, Dwg. C.8798143
13、Defect Method of Inspection CRITIML None defined I None defined L MAJOR P 201 Contents loose Manual 202 Hardware missing, loose, broken or improperly engaged. Manual & Visual 203 Strapping missing, loose, broken or improperly a s s emb 1 ed Manual & Visual 204 Contents of box exposed Vi sua 1 205 Bo
14、x damaged 206 Marking missing, incorrect or illegible Vi sua I 207 Number of units incorrect Visua 1 208 Car seal missing, unsealed or improperly positioned Vi sua 1 Inspection testing.- The following tests shall be performed I c 4.2.3 in accordance with the provisions of 4.3. 4.2.3.1 Firing pin rel
15、ease.- Each firing pin shall release from Failure -the cocked position in accordance with the provisions of 3.2. of any firing pin assembly to comply wkth 3.2 shall be cause for rejection of the subassembly. I for security with the safety pin in each position. tor pin to comply with the requirements
16、 of 3.3 shall be cause for rejec- Failure of any initia- I tion of the subassembly. I withstand a breakaway torque application as provided in 3.4. of any subassembly to comply with 3.4 shall be cause for rejection of the Failure I ._ I . subassembly. .- I with 3.5 shall be cause for rejection.of the
17、 assembly. 4.2.3.5 Functional.- The following test shall be performed by the I Government. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-1-14887 L3 799990b 0298057 T _ _ - - _ MIG-I-L4889(M?J) 4.2.3.5.1 Ballistics. - Twenty-one units shall be t
18、ested to determine compliance with the requirements of 3.6.1, 3.6.2 and 3.6.3. shall be temperahre conditioned as provided in Table III and 4.3.5.1.1. Failure of any un-it to comply with the requirements of 3.6.1, 3.6.2 and 3.6.3 shall be cause for rejection of the lot. The units TABU2 III * Temp er
19、atur e Smiple Size i!& c -65 to 709 65O to 75OF 200 to 2059 7 7 7 o ,6576 0.65% O .65% 4.2.4 Inspection Equipment.- The examination on tests shall be made using equipment listed on IEL 10551995. 4.3 Test methods and procedures. 4.3.1. Firing pin release.- The subassembly shall be secured in the fixt
20、ure. direction in conjunction with the fixture which registers the amovnt of pull. A pull shall be applied to the initiator pin in the longitudina 4.3.2 Initiator pin security.- The subassembly shall be secured in the fixture with the safety pin in place. initiator pin in the longiudinal direction i
21、n conjunction with the fixture which registers the amount of pull. safety pin in each position. A pull shall be applied to the The test shall be perfarmed with the 4.3.3 Breakaway torque.- A torque wrench set at the torque require- The torque shall be applied to the ment specified in 3.4 shall be us
22、ed in conjunction with the fixture to determine the adequacy of the Jlnt. cap. 4.3.4 Residual magnetism. - The initiator shall be tested for excessive residual magnetism in an area free of local magnetic effects by placing the ini&iator 6 inches from and a the same height-as the compass in a north-
23、south hoi.izonta1 position (cap end south) with the compass set in an ee,sl-urest heading. The inikia-hor shall be moved slowly past the compass in a Iongitxdinal. direction for its entire length, rotated 90 degrees in Yne horizontal position about its longitudinal axis and moved slowly back past th
24、e compass. rotation of the initiator. L This procedure shall be repeated for each 90 degree * 4.3.5 Functional. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-in the fixture. The sample shall be tested within five minutes after removal from the co
25、nditioning chamber. the sample.units shall be reconditioned in accordance with 4.3.5.1.1. I When this time limit is exceeded, 4.3.5.1.1 Temperature conditioning.- A standard XM92 initiator loaded with a dummy M155 cartridge, containing a temperature sensitive the sample, The conditioning time shall
26、be a minimum of one hour longer than the time necessary to bring the element contained in the dummy car- tridge to the required temperature. element shall be placed in the conditioning chamber at the same time as i r i- 5.1 Packing and marking.-Packing and marking shall be in accordance W 6.1 Orderi
27、ng data.- Procurement documents should specify the title, I number and date of this specification. I 6.2 A mechanical failure is defined as any deformation or breakage of a part, the occurrence of which is other than a design function. 6.3 Ignition delay is defined as the time that elapses between t
28、he firing of the pressure element and the beginning of the continuous pressure rise on the pressure time record. Custodian : Army - MU Preparing activity: Army - MU Project No. 1377-A 334 * U. 8. GOVERNMENT PRINTINQ OFFICL 1971 -43869413938 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
