1、-_ . MIL-T-48qL5 13 m 777770b O320062 5 W MIL-T-b8415(MU) i5 July 1974 MILITARY SPECIFICATION TRACER, PROJECTILE, M31, ASSEMBLY, PARTS FOR, AND LOADING, ASSEMBLING AND PACKAGING This specification is approved for use by allnepartments and Agencies of the Department of Defense. 1. SCOPE 1.1 This spec
2、ification covers the parts for, and the loading, assembling and packaging for one type of tracer designated as Tracer, Projectile, M3Al, As s embly . 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 e
3、xtent specified herein. SPECIFICATIONS Federal PPP-B-601 PPP-B - 621 PPP-B-636 PPP-B-676 -Boxes , Setup -Boxes , Wood , Cleated-Plywood -Boxes, Wood, Nailed and Lock-corner -Boxes , Shipping , Fiberboard Military MIL-A-2550 -Ammunition, General Specification For n -B - 117 MIL-P- -Powder , Black MIL
4、-P-116 -Preservation-Packaging-Methods of -Bags, Sleeves and Tubing, - Interior Packaging STANDARDS Military MIL-STD-lo5 -Sampling Procedures and Tables for Inspection MIL-STD-109 IL-Sm-4i4 MIL-STD-1167 -Ammunition Data Card MIL-STD- -Lot Rumbering of Ammunition by Attributes -Quality Assurance Term
5、s and Definitions -Sampling Procedures and Tables for Inspection by Variables for Percent Defective FSC i315 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ MIL-T-YY25 23 W 777970b 03200b3 7 W 2.1 (Contd) MIL-STD -1234 -Pyrotechnics: Sampling, Insp
6、ection and MIL-STD - i235 Testing -Single and Multilevel Continuous Sampling Procedures and Tables for Inspection by Attributes. DRAWINGS Armament Command Di1751175 -Tracer, Projectile, M31, Assembly C8796522 Packing Boxes LI -11751175 Tracer, Projectile, M31, Assembly -Marking Diagram and Sealing f
7、or Wood -Index of Inspection Equipment Lists for 2.2 Other hib1ications.-The following documents form a part of this specification to the extent specified herein. issue in effect on date of invitation for bids or request for proposal shall Unless otherwise indicated, the apply ANSI-B46.1 -Surface Te
8、xture (Application for copies should be addressed to the American National Standards Institute (ANSI), 1430 Broadway, New York, N.Y. 10018). ASTM Methods -American Society for Testing and Materials (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Ra
9、ce Street, Philadelphia, Pa. 19103.) 3.1 General. 3.1.1 Tracer and igniter compositions.-The materials used in the tracer and igniter compositions shall comply with the requirements specified on the drawings and referenced specifications (See 3.7.1, 3.7.2, 4.3.3.1, 4.4.1 Weighed ani the-weight recor
10、ded, for 4 hours at a temperature of i50 degrees Fahrenheit (15OOF). sample shall be reweighed to accept or reject on the results (see 3.7.4, 4.3.3.3 Then th sample shall be placed-in an oven After this the & 6.6). 4.4.4 Failure of the heat seal test of the sealed barrier bag is a major defect. Samp
11、ling, ecceptance criteria and testing procedures for this test shall be as required in specification z-p-116 (see 3.8, 4.3.3.4 & 6.7). 4.4.5 Residual stresses - Cup, Initiator.-The purpose of this mercurous nitrate test is to detect residual stresses in brass components which could result in cracks
12、or splits during extended ammunition storage. pieces maximum. subject a sample of 25 pieces of each sub-lot to this test, be rejected if one or more initiator cups of the sample shows a split. Lot size to be 100,000 Divide the lot into Sub-lots of 10,000 pieces equally and The sub-lot shall 12 Provi
13、ded by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-T-484iS 13 = 9999906 032007Li 1 MIL-T-48415 (Mu) 4.4.5.1 Mandatory safety requirememts. 4.4.5.1.1 Food shall not be eaten or stored in the laboratory or space in which these tests are conducted. 4.4.5.1
14、.2 Acid resistant apron and gloves or the equivalent shall be worn by each test technician. 4.4.5.1.3 Face shields shall be worn at all times during the pouring or mixing of acids and water. of this test. Safety glasses shall be worn during other phases 4.4.5.1.4 Asbestos or heat insulating gloves s
15、hall be worn during the heat volatilization phase of the test to facilitate handling. 4.4.5.1.5 During the entire period of volatilization the oven door shall be closed, 4.4.5.1.6 Extreme care shall be exercised in the mixing of acid with water and shall only be accomplished by the pouring of the ac
16、id into the water, 4.4.5.1.7 This test shall be conducted under canopy or hood having a forced draft ventilation system to remove the noxious fumes. of tested components local regulations shall be observed. In the disposition 4.4.5.2 Preparation for test. The initiator cups are submerged in an aqueo
17、us solution of nitric acid (40% by volume of 1.42 specific gravity nitric acid in distilled water) for thirty seconds and are then rinsed thoroughly in cold running water. 4.4.5.3 Method of conducting test, 4.4.5.3.1 The aqueous mercurous nitrate solution used in this tes: shall consist of 10 grams
18、of mercurous nitrate and 10 milliliters of nitric acid (spec. gr. 1.42) per liter of solution. 4.4.5.3.1.1 The aqaeous -ercurous nitrate solution container shall be equipped with a suitable grid or screen in the bottom to permit full access of the solu- tion to the head of the initiator cup, The lev
19、el of the solution in the container shall be such that the initiator cup is completely submerged when standing upright on tiie grid or screen, 4.4.5.3.2 The initiator cups shall then be immersed uprigiit in the mercur- ous nitrate solution for 15 minutes. water and drained. They are then rinsedthoro
20、ughly in cold running 4.4.5.3.3 After completion of tne procedure of 4.4.5.3.2, the initiator cups are then placed in an oven or other suitable heat source tovolatilize the mercury. When the mercury has been completely mlatilized, the initiator cups 4.4.5.3.4 are examined under a magnification of 10
21、 to 15 power for cracks or splits. 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ - MIL-T-4Y15 13 7797706 0320075 3 I MIL-T-48415(MU) 4.4.5,4 Definitions 4.4.5.4.1 A split is a separation of metal entirely through the wall or head 4.4.5.4,2 A c
22、rack is a surface condition in which the separation of the metal 4.4.5.5 Recording of data. 4.4.5.5.1 The results of the test shall be recorded 4.4.5.5.2 The test record shall be reproduced and cupies distributed as of the initiator cup. does not go entirely through the wall or head of the initiator
23、 cup. (See 4.4.5.6). directed by the responsible agency for the acceptance of the item (See 6.13). 4.4.5.6 Suggested Format MERCUROUS NITRATE TEST - ACCEPTANCE REPORT End Item: - Tracer, Projectile Assembly, M3Al Part Name: - Cup, Initiator Part No.: - i75i179 Contractor: - Contract No. : - Lot: - S
24、ub-Lot NO. : - Sub-Lot Size: - Total NO. Tested SPLITS Results Results CRACKS Remarks : Foreman Test Technician Chf, Ballistics 14 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-48415(MU) 4.4.6 grotective coating.- The procedures for testing t
25、he cleaning of components and the application of protective coating shall be in accordance with the criteria for testing, as specified in the appliceble specification. shal be performed utilizing the procedures and equipment prescribed by ASTM Method BU.7. The salt spray test 4.4.7 Proving Ground. 4
26、.4.7.1 Ballistic tracer functioning (Acceptance test) .- The sample tracers shall be assembled to HE-T, SD loaded Mk 2 40MM cartridges. Unless otherwise instructed by the technical agency, immediately prior to assembling the sample tracers tQ the projectiles, the tape protecting the relay ignition c
27、harge shall be removed, from the appropriate weapon and the tracer burning times measured and recorded. A timing device capable of measuring time to %he nearest .O1 second shall be used to measure burning time. Suitable aides, such as binoculars, should be used to insure visible contact with tracer
28、(See 6.12 & 6.13). The assembled rounds shall be fired single action at ambient temperature 4.4.7.2 Ballistic tracer functioning (information only). - The sample tracers 6haU be assembled to HE-T, SD loaded Mk 2 40MM cartridges in the manner as specified in 4.4.7.1 and tested as specified in 4.4.7.1
29、. One-Half of the assembled test rounds shal be temperature conditioned at 125 degrees Fahrenheit (125%) for a minimum of 18 hours and those remaining shall be temperature conditioned at minus 40 degrees Fahrenheit (-4OOF) for a minimum of 18 hours. The assembled rounds shall then be fired and trace
30、r burning time recorded for informational purposes only (See 6.12 & 6.13). 4.4.8 Government use of contractors inspection equipment. - The contractor shall make available to the Government all inspection equipment necessary for determining conformance with contract requirements. equipment and verifi
31、cation of its accuracy, shall be supplied by the contractor for the performance of evaluation or test by the Government. Personnel for operating the 5. PREPARATION FOR DELTVERY 5.1 Preparation for delivery shall be in accordance with Picatinny Arsenal These provisional packing instructions shall be
32、utilized as part Provisional Packing Instruction No. 92-74, dated 22 October 1974 (sheets 1,2 and 3 of 3 sheets). of the basic procurement documents until advised ofa substitution by the technical agency. 6. NOTES 6.1 Visual examination qualification. - When compliance with the applicable requiremen
33、t is in doubt as a result of visual examination, this characteristic may be measured or gaged to determine acceptability. 6.2 Visual standards.- Visual standards to be established at contractors plant in accordance with 3.4.3. 6.3 Ordering data.- Procurement documents should specify the title, numbe
34、r, and date of this specification. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-LI415 13 777770b 0320077 7 W c- . 6.4 Moisture. - Igniter and tracer compositions .-The pellets formed thereof are hygroscopic and will deteriorate rapidly when
35、exposed to moisture. amounts of moisture present in or absorbed by the composition or pellets, prior to or after loading into tracers will eventually result in unsatisfactory functioning. It is highly desirable that the ingredients, compositions, pellets, and loaded tracers be careflly safeguarded f
36、rom exposure to moisture and humid atmospheres. For assurance of a satisfactory loaded tracer, it is recommended that the blending and pelleting buildings be air conditioned in a manner which will hold the humidity of the atmosphere as low as practicable. Small 6.5 Moisture, -Initiator charge and re
37、lay ignition charge (Black Powder). Small amounts of moisture present in or absorbed by the black powder prior to or after loading the initiator cup and tracer assembly will result in- unsatisfactory tracer functioning. cups and tracer assemblies be carefully safeguarded from exposure to moisture an
38、d humid atmosphere. It is highly recommended that the black powder, loaded initiator 6.6 To assure compliance of 3.7.4, 4.3.3.3 & 4.4.3 it is recommended that the packaging boxes be stored in a cool dry storage area prior to use. 6.7 Heat Seal Test of barrier bag.- Verification of the heat seal of t
39、he barrier bag shall be as required in specification z-p-116. 68 Prior to fabrication of an initial production sample, the contractor upon approval of the contracting officer may make and submit for evaluation up to 5 process control lots. less than 10 nor more than 30 tracer assemblies. The contrac
40、tor shall furnish all information pertaining to the manufacture of the lots to the contracting officer and the technical agency. All costs for testing these process control lots will be borne by the Government. These process control lots shall consist of not 6.9 Alternative testing procedures. - Alt
41、ernative testing procedures may be used by the contractor when such testing and procedures provide as a minimum the quality assurance provisions specified herein. procedures, the contractor shall describe them in a written proposal and shall demonstrate for approval of the responsible technical agen
42、cy that their effect- iveness is equal to or better than the quality provisions specified herein. 6.10 When a product is being inspected in accordance with MIL-STD-I235 and a defective characteristic is found, the product produced prior to the discovered defect will be screened back 2000 tracer asse
43、mblies and ail defects culled out. Prior to applying alternative 6.11 Shipping.-It is not intended to ship these compositions or pellets. It is intended that the compositions and pellets thereof be prepared at the plant where the loading of the tracers will be accomplished. 6.12 Combining of proving
44、 ground tests.- When the contractor for the tracer is also the corhractor for the comnlete round or one of the loaded comonents thereof, the proving ground tests may be combined agreement between the procuring activity and the contractor. in order to save-egense, upon 16 Provided by IHSNot for Resal
45、eNo reproduction or networking permitted without license from IHS-,-,-MIL-T-48415 13 9977706 0320078 9 I MIL-T-48415 (MU) 6.13 Submission of mercurous nitrate, firing and test data.- In addition to the normal distribution of records for each lot of tracers, when the item is procured by the Departmen
46、t of Defense, copies should be sent to: Gamander Frank f or d Ars enal ATTN: SARFA-QAA-Q (1 COPY) SARFA-MDP-Y (1 COPY) Philadelphia, Pa. 19137 Custodian : Amy - Mu Preparing Activity Army - Mu Project No. 1315-A262 * U. S. GOVERNMENT PRINTING OFFICE: 1974.603- 124,753 17 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
