1、MIL -C -4 627iA (MU) 8 February 1968 SUPERSEDING MfL -C -4 6271 ( Ord ) 29 August i960 MLITARY SPECIFICATION CARTRIDGE, AIRCMFT EJECTION SEAT, CATAPULT, 281 ASSEMBLY 1. SCOPE 1.1 This specification covers Cartridge, Aircraft Ejection Seat, Catapult, 11281, Assembly for use with propellant actuated d
2、evices in aircrew emergency escape systems. 2. APPLICABLE DoCUmNTS 2.1 The following documents of the issue in effect on.date of invitation for bids or request for proposal form a part of this specification, to the extent specified herein: S PECIFICATZONS Irli1 it ary MIL -A -2550 - Ammunition and S
3、pecial Ueapons, General ML 43-5 27 2 - Environmental Testing, Aeronautical and MIL-c-o - Coatings, Anodic, Conventional, for Speciflcation for Associated Equipment, General Specifi- cation for Aluminum and Aluminum Alloys STANDARDS Military mI; -STD -1 05 IIIIL -STD-10 9 9lL-STD-413 MIL -STD- 63 9 N
4、IL -STD-1167 BIS -28741 - Sampling Procedures and Tables for nspectlon by Attributes - Quality Assurance Terms and Definitions - Visual Inspection Guide for Rubber O-Rngs - Surface Roughness Values Preferred for Army Ordnance Materiel - Amwition Data Card - Hose Assembly, Detachable End Fitting, Med
5、ium Pressure FSC 1377 I /-=- y THIS DOCUMENT CONTAINS /s PAGES. . .I - - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-46271A( MU) DRAWINGS 85 93353 87 97308 F8797303 - Cartridge, Aircraft Ejection Seat, Catapult, 281, - Carton, Packin5 Ammun
6、ition for Cartridge, Aircraft - Box, Packing, Ammunition for Cartridge, Aircraft .Assembly Ejection Seat, Catapult, 281 Ejection Seat, Catapult, 281 . TEL 8593353 - Inspection Equipment List for Cartridge, Aircraft Ejection Seat, Catapult, 281 . (Copies of specifications, standards, drawings and pub
7、lications required by suppliers Ln connection with specific procurement functions should be obtaine from the procuring activity or as directed by the contracting officer.) 3. REQUIREMENTS 3.2 Vibration. - The assembled cartridge shall withstand vibration as pre- scribed in MIL-E-5272, Procedure XII,
8、 without evidence of any disintegration of the primer, igniter or propellant or derangement of any component. 3.3 c - 6053 9. Protective finish.- Protective finish shall be in accordance with MIL- 3.4 Physical properties. - Physical properties required by the drawing shall be uniform throughout the
9、part within specified tolerances. all alloy steel parts shall be achieved by quenching and tempering. Requirements for 3.5 Functional. 3.5.1 The cartridge shall not fail to fire, 3.5.2 Ballistics.- The cartridge when assembled in an M5Al Catapult shall propell a 300 pound weight vertically and shall
10、 comply with the requirements of Table I. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILC-46271 ( MU) 3.5.2 (Contd) TABLE I Acceleration, Max Max Rate of Minimum gs Change of Ignition Velocity Pressure load Acceleration Milliseconds i50 max De
11、gree() Fahrenheit(F) 3.5.2.1 Initiation.- The catapult shall be fired by a source delivering an output equal to that og an M3A1 Initiator a;f; the-end of 10 feet of aircraft hose, size 4, MS-28741 at 70 f SoF. 3.6 WorJsmanshiE.- The requirements for workmanship are as specified on the 3.6.1 Metal de
12、fects.- The part shall be free from cracks, splits, cold shuts, applicable dzaTjmgs, referenced specifications and the following: inclusions, porosity or other metal defects. 3.6.3 grease, rus%, corrosion or other foreign matter. 4. QUAUTY ASSURANCE PROVISIONS Foreign matter.- The part or assembly s
13、hall not contain chips, dirt, 4.1 Responsibility for inspection.- Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspec- tion requirements specified herein. may utilize his OPM facilities or any commercial laboratory acceptable to
14、 the Government. set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. Except as otherwise specified, the supplier The Government reserves the right to perform any of the inspections 4.1.1 Quality assurance term
15、s and definitions.- Reference shall be made to MIIrSTD-lo9 to define the quality assurance terms used. - 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIEC-4627lA (I.- The product shall be submitted in accordance with las-STD-105. 4.3,l.z Size of
16、 lot.- Unless otherwise specified by the procuring agency, a lot shall consist of 1200 cartridges, maximum, exclusive of test samples, and shall consist of: a. b. c. d, Components produced by a homogeneous process. Propellant from not more than one lot. Primers from not more- than one lot. Igniter f
17、rom not more than one lot. 4.3.2 Examinabion.- One hundred percent examination shall be performed for all critical defects. performed on a defect basis 5n accordance with the classification of defects contained herein, using the sampling plan and associated criteria in Tables IV and V. For an indivi
18、dual defect (single characteristic) the criteria in Table IV shall be used. the criteria in Table V shall be used. rejected. 413. used as a basis of comparison for surface roughness determination. power fion sample shall be subjected to vibration. The twelve cartridges shall then be X-rayed. Failure
19、 of any cartridge to comply with the requirements of 3.2 shall be cause for rejection of the lot. Any change in the process of a lot of primers h- subsequent production shall be reason to select an additional sample of twelve cartridges for vibration fest s accordance with the provisions of 4.4, Pro
20、vided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-14 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.4.5 Sealant application. - The cartridge shall be disassembled in such a manner that determination can
21、 be made that the sealant has been applied for the full length of the joining surfaces at the junction of the sealing disc and case sidewall and that the propellant cavity is free of sealant. 4.4.6 punct ional 4.4.6.1 Ballistics.- The cartridges shall be loaded into an acceptable M5Al Catapult, divi
22、ded into three equal groups and temper- ature conditioned in accordance with Table III. be tested within ten minutes after removal from the conditioning chamber. When this time is exceeded the catapult shall be reconditioned in accord- ance with 4.4.6.1.1. . The cartridge shall 4.4.6.1.1 Temperature
23、 onditioning. - A standard M5Al catapult loaded with a dummy 281 Cartridge, containing a temperature sensitive element shall be placed in the conditioning chamber at the same time as the samples, The condition-ing time shall be a minimum of one hour longer than the time necessary to bring the elemen
24、t contained in the dummy cartridge tothe required temperature. 5. PREPARATIONS FOR DELIVERY 5.1 Packing and marking.-Packing and marking shall be in accordance with Drawings F8797308 and F8797303. 5.2 Data Sard.-Data card information shall be in accordance with MIL-STD-1167. 6. NOTES 6.1 Velocity ap
25、plies at tube separation. 6.2 Ignition delay is defined as the time that elapses between the firing of the primer and the beginning of a continuous pressure rise on a pressure time record. Custodian Preparing Activity Arw - MU Army - Mu Project No. 1377-AO92 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
