1、 Comments, suggestions, or questions on this document should be addressed to U.S. Army RDECOM, Tank Automotive Research, Development and Engineering Center, ATTN: RDTA-EN/STND/TRANS MS #268, 6501 E. 11 Mile Road, Warren, MI 48397-5000 or emailed to DAMI_STANDARDIZATIONconus.army.mil. Since contact i
2、nformation can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil. AMSC N/A FSC 2590 METRIC MIL-DTL-46789D(AT) 23 July 2010 SUPERSEDING MIL-DTL-46789C(AT) 4 September 1998 DETAIL SPECIFICATION BLASTING MACHINE, AUXIL
3、IARY FIRING, EMERGENCY This specification is approved for use by the U.S. Army Tank Automotive Research, Development and Engineering Center (TARDEC), Research, Development and Engineering Command (RDECOM), Department of the Army, and is available for use by all Departments and Agencies of the Depart
4、ment of Defense. 1. SCOPE 1.1 Scope. This specification covers an auxiliary firing blasting machine, hereinafter to be referred to as “assembly”, which produces an electric output through generator action for emergency firing of fire power on full tracked combat vehicles. 1.2 Classification. Blastin
5、g machines furnished are of the following classes (see 6.2). Class 1 - 8675771 Class 2 - 11599606 Class 3 - 11637536 Class 4 - 11679045 Class 5 - 12282970 Class 6 - 12918973 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-46789D(AT) 2 1.3 Par
6、t or Identifying Number (PIN). The PINs to be used for the blasting machines acquired to this specification are created as follows: M 46789 - X Model numbers 1 = part number 8675771 (Class 1) 2 = part number 11599607 (Class 2) 3 = part number 11637536 (Class 3) 4 = part number 11679045 (Class 4) 5 =
7、 part number 12282970 (Class 5) 6 = part number 12918973 (Class 6) Specification number Prefix for military specification 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents cite
8、d in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this
9、specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are t
10、hose cited in the solicitation or contract (see 6.2). DEPARTMENT OF DEFENSE STANDARDS MIL-STD-202 - Tests Methods for Electronic and Electrical Component Parts MIL-STD-810 - Environmental Test Methods (Copies of these documents are available from https:/assist.daps.dla.mil/quicksearch/ or from the S
11、tandardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless ot
12、herwise specified, the issues of these documents are those cited in the solicitation or contract (6.2). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-46789D(AT) 3 U.S. ARMY TACOM DRAWINGS 8675771 - Blasting Machine, Basic Unit 11599606 - Bl
13、asting Machine, Basic Unit 11637536 - Blasting Machine 11679045 - Blasting Machine Assembly 12282970 - Blasting Machine Assembly 12918973 - Blasting Machine Assembly (Copies of these drawings are available from DAMI_STANDARDIZATIONconus.army.mil or U.S. Army RDECOM, Tank Automotive Research, Develop
14、ment and Engineering Center, ATTN: RDTA-EN/STND/TRANS MS #268, 6501 E. 11 Mile Road, Warren, MI 48397-5000.) NUCLEAR REGULATORY COMMISSION 10CFR30 - Rules of general applicability to domestic licensing of byproduct material 10CFR40 - Domestic licensing of source material (Copies of these documents a
15、re available from www.gpoaccess.gov/cfr/index.html or U.S. Government Printing Office, 732 North Capitol St. NW, Washington, DC 20401.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of thes
16、e documents are those cited in the solicitation or contract (see 6.2). ASTM INTERANATIONAL ASTM G21 - Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi (DoD Adopted) (Copies of these documents are available from www.astm.org or ASTM International, P.O. Box C700,
17、West Conshohocken, PA 19428-2959.) MASTER PAINTERS INSTITUTE (MPI) MPI #9 - Alkyd, Exterior, Gloss (MPI Gloss Level 6) (Copies of these documents are available from or Master Painters Institute, 2800 Ingleton Avenue, Burnaby, BC V5C 6G7 Canada.) 2.4 Order of precedence. Unless otherwise noted herei
18、n or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-46789D(AT) 4 document takes precedence. Nothing in this docum
19、ent, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection in accordance with 4.1.1. 3.2 Materials. Materials shall be as specified herein
20、 and as in the referenced drawings, specifications, and standards and shall be free from all defects and imperfections that might affect the serviceability and function of the finished product (see 4.5). 3.2.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or envi
21、ronmentally preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs (see 4.5). 3.2.2 Corrosion resistance. Function parts exposed to the envir
22、onment shall be fabricated from suitable corrosion resistant material or treated to prevent corrosion (see 4.5). 3.2.3 Threads. All internal and external threads shall conform to commercial American Standards (see 4.5 and 6.5). 3.2.4 Finish. Non-functional metal parts exposed to the environment shal
23、l be painted white with enamel conforming to MPI #9 or equivalent (see 4.5.1). 3.3 Design and construction. The design, construction and assembly of the blasting machine shall conform to Drawings 8675771, 11599606, 11637536, 11679045, 12282970 or 12918973, as applicable (see 4.5 and 6.2). 3.4 Operat
24、ing requirements. Each assembly shall provide the following functional, operational, and performance capabilities. 3.4.1 Electrical output. The assembly shall generate an electrical output not less than that listed in table I at each of the conditions specified (see 4.6.1, 4.6.1.1 and 6.2). (Not app
25、licable to blasting machines covered by Drawings 12282970 or 12918973; for which the electrical output requirements shall be as specified on their respective drawing (see 4.6.1.2 and 6.2). 3.4.2 Operating position. The assembly shall meet the electrical performance requirements of table I (Assemblie
26、s 12282970 and 12918973, as appropriate per their respective drawing requirements) when operated in any of the following positions (see 3.4.1 and 4.6.2): a. Shaft in a vertical position with handle down. b. Shaft in a vertical position with handle up. Provided by IHSNot for ResaleNo reproduction or
27、networking permitted without license from IHS-,-,-MIL-DTL-46789D(AT) 5 c. Shaft in a horizontal position. TABLE I. Electrical output. Condition Rotor shaft input 1/ torque (Nm) 10% Resistive loads (ohms) 2/ Peak output voltage (minimum) A 7.9 1.47 1% 3.1 3/ B 7.9 20.50 1% 27.0 C 7.9 Open circuit 44.
28、0 D 11.3 1.47 1% 3.8 E 11.3 20.50 1% 38.7 F 11.3 Open circuit 60.0 G 14.7 1.47 1% 4.4 H 14.7 20.50 1% 49.4 I 14.7 Open circuit 74.0 1/ Specified torque is the applied torque at the start of the stroke measured after 5 of shaft rotation when the backlash of the gear drive mechanism is eliminated. Tor
29、que should be sufficiently constant throughout the stroke so that neither maximum nor minimum values of torque deviate from average torque by more than 15%. Torque at no point in the power stroke may exceed the maximum specific value of torque. 2/ Pure resistive load with no more than 1% inductive i
30、mpedance component at 1000 Hertz (Hz). 3/ Shall be 0.9 volts minimum 50 milliseconds after peak voltage. NOTE: Nm = Newton meters, % = percent 3.4.3 Dielectric strength. The assembly shall operate safely at its rated voltage and withstand momentary overpotentials due to switching, surges, and simila
31、r phenomena (see 4.6.3). 3.4.4 Insulation resistance. The assembly shall have an insulation resistance of not less than 100 megohms between the internal wiring and the case (see 4.6.4). 3.4.5 Rotation. The direction of rotation of the handle to produce the electrical output shall be clockwise when v
32、iewed from the handle end. One cycle of rotation shall be 150 5 and return to original position (see 4.6.5). 3.4.6 Torque. The assembly shall show no evidence of failure, electrically or mechanically, after repeated operation at 14.7 N-m of torque throughout the complete rotation of the rotor shaft
33、(see 4.6.5.1). 3.4.7 Operational stability. The assembly shall withstand 10,000 cycles of operation without failure (see 4.6.5.1). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-46789D(AT) 6 3.5 Interface requirements. The assembly shall con
34、form to the interface envelope dimensions, mounting and electrical interfaces in the applicable drawing (see 4.7). 3.6 Support and ownership requirements. The assembly shall possess the following life cycle ownership characteristics (see 4.8). 3.6.1 Safety. The assembly shall pose no hazards, physic
35、ally or electrically to personnel operating the blasting machine (see 4.8.1). 3.6.2 Identification marking. The assembly shall prominently display at least, the items name, manufacturers name or trademark, manufacturers part number, cage code serial number and PIN (military part identification numbe
36、r) on the outer surface, in permanent, easily visible, straight simple letters and numbers (see 4.8.2). 3.7 Operating environment requirements. Each assembly shall operate under the following environmental conditions, without degradation in performance. 3.7.1 Waterproofness. The assembly shall be ca
37、pable of withstanding 41 kilopascals (kPa) differential while submerged in water (see 4.9.1). 3.7.2 Sand and dust resistance. The assembly shall be capable of withstanding blowing sand and dust at a velocity of 762 152 meters per minute (m/min) (see 4.9.2). 3.7.3 Fungus. The assembly shall be capabl
38、e of withstanding a fungus environment at 93 to 100% relative humidity (see 4.9.3). 3.7.4 Shock. The assembly shall be capable withstanding a sawtooth wave shock pulse of 75 gravity units (g) (see 4.9.4). 3.7.5 Corrosion resistance. The assembly shall be capable of withstanding a 5% salt solution sp
39、ray (see 4.9.5). 3.7.6 Vibration. The assembly shall be capable of withstanding the severe vibration profile as specified in figure 2 with sweep times of 16 min/cycle and the total cycling time per axis shall be two hours in each of the three mutually perpendicular axes (see 4.9.6). Provided by IHSN
40、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-46789D(AT) 7 FIGURE 2. Vibration profile. 3.7.7 Temperature stability. The assembly shall meet the requirements specified herein at ambient temperatures ranging from -32 C to 52 C and shall show no evidence of
41、failure, electrical or mechanical, after storage at an ambient temperature ranging from -54 C to -8 C (see 4.9.7 and 4.9.8). 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.1.1) 1. Preproduc
42、tion inspection (see 4.1.2) 2. Initial production (see 4.1.3) b. Conformance inspection (CI) (see 4.2) 1. Examinations (see 4.2.2) 2. Tests (see 4.2.3) Input accelerationlevel (gs)F re q u en c y ( H z)1 2 3 4 5 6 7 8 9 1 0 2 3 4 5 6 7 8 9 1 0 2 3 4 5 6 7 8 9 1 010987654321654321 0 0 5 0 03g2g1 . 5
43、g1g0 . 5 g9 . 9 H z1 8 0 H z0 . 5 in . D . A .Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-46789D(AT) 8 4.1.1 First article inspection. First article inspection shall be performed on preproduction and initial production units as specified
44、herein. Approval of the first production units by the Government shall not relieve the contractor of the obligation to supply assemblies that are fully representative of those inspected as a first article (see 6.3). 4.1.2 Preproduction inspection. When specified (see 6.2), the preproduction sample s
45、hall consist of 2 units. Preproduction inspection shall consist of inspection as specified in table II. 4.1.3 Initial production inspection. Unless otherwise specified (see 6.2), the Government shall select two units from the first ten produced under the production contract for the initial productio
46、n inspection. The initial production samples shall be inspected as specified in table II. 4.1.4 First article test sequence. First article tests shall be conducted on the sample in accordance with the test sequence specified in table III. 4.2 Conformance inspection. Conformance inspection shall incl
47、ude the examination of 4.2.2 and the tests of 4.2.3. Noncompliance with any of the specified requirements shall be cause for rejection of the sample and the inspection lot. Following this test the assembly shall be subjected to and pass the electrical output test of 4.6.1 (see 6.4). 4.2.1 Sampling p
48、lan. The sampling plan shall be as specified in the contract or work order (see 6.2). 4.2.2 Examination. The sample selected in accordance with 4.2.1 shall be examined as specified in table II. The major defects are safety, identification markings and interface while the minor defect is the finish. The acceptance number in all cases is zero. 4.2.3 Test (100% inspection). Each item shall be subjected to the CI tests specified in table II. 4.3 Verification methods. The types of verification methods included in this section are visual, inspection, measurement, sample tests, full scale demonstrat
