1、BB -N-4 1 1 flIL-S-48459B 12 m 7997906 0320702 4 a* 3-3743 MIL-S-48459B(AR) 30 June 1981 SUPERSEDING M IL-S-4845 9A( AR) 1 March 1976 MILITARY SPECIFICATION SELECT UNIT, AMMUNITION: 11732600 This specification is approved for use by the US Army Armament Research and Development Command (ARRADCOM) an
2、d is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification establishes the requirements and quality assurance provisions for the Select Unit, Ammunition: unit of the M21 Ballistic Computer, 11732979. 11732600 which is a 2. APPLICABLE D
3、OCUMENTS 2.1 Issues of documents. 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. SPECIFICATIONS Nitrogen, Technical MILITARY MIL-F-13926 MIL-1-45607 MIL-STD-45662 Fire Control Ma
4、teriel; General Specification Governing the Manufacture and Inspection of Inspection Equipment, Acquisition, Maintenance and Disposition of Calibration System Requirements FSC 1220 r i THIS DOCUMENT CONTAINS 17 PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without licen
5、se from IHS-,-,-.MIL -S -48 45 9B ( AR) STANDARDS MILITARY MIL-STD-105 Sampling Procedures and Tables for Inspection MIL-CTD-810 Environmental Test Methods by Attributes DRAWINGS ARRADCOM 11 732600 Select Unit, Ammunition Inspection Equipment 11821748 11 823000 11823082 Packaging Data Sheet P1173260
6、0 Test Set - Immersion Leak, Purge and Fill Amo Select .Test Fixture Vibration - 3 Axis Ammo Selector Packaging of Select Unit, Ammunition: 11 73 2600 . (Copies of specifications, standards, drawings and publications required by contractors in connection with specific procurement functions should be
7、 obtained from the procuring activity or as directed by the contracting o f f i Cer. 1 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-S-48457B 12 m 7777906 0320704 m MIL-S-4845 9B( AR) O 3. REQUIREMENTS 3.1 Fabrication. The ammunition select
8、unit, herein referred to as the assembly, shall be manufactured in accordance with Drawing 11732600 and drawings pertaining thereto and, when assembled, shall nieet the requirements of this specification. (See 4.5.1) 3.1.1 Function. The assembly shall provide for the selection and indication of four
9、 types of ammunition as follows: Type Designation Color Type Nomenclature a. APDS red Armor Piercing Discarding Sabot b. HEAT green High Explosive Anti-Tank C. HEP/WP blue High Explosive Plastic/White d. FSDS yellow Fin Stabilized Discarding Sabot Phosphorous 3.1.2 General specifications. The follow
10、ing provis,i.ons of MIL-F-13926 apply: (See 4.5.1) a. Order of precedence b. Dimensions and tolerances c. Inorganic protective surface finishes d, Part identification and marking e. Workmanship 3.1.3 Ambient conditions. Standard ambient conditions shall be as follows : a. Temperature 73O + 18OF b. R
11、elative humidity 50 percent - + 30 percent c. Atmospheric pressure 28.5 + 2.0 - 3.0 in. Hg. 3.2 First article. When specified (see 6.2), the contractor shall furnish sample units for first article inspection and approval (see 4.4 and 6.2). 3.3 Performance. Unless otherwise specified, the assembly sh
12、all meet the performance requirements specified herein under standard ambient conditions of 3.1.3. 3.3.1 Input voltage. The input voltage shall be 24 - + 2 Volts direct current (vdc) applied between pins 3Jl-U(+) and 351-V(-), 3 Provided by IHSNot for ResaleNo reproduction or networking permitted wi
13、thout license from IHS-,-,-MIL-S-48457B 12 7777706 0320705 T Item 1 2 3 4 MIL -S -4845 9 B ( AR) input (Connections) i/ Lamp Indicators - 3J1-H 351-5 3J1-K 3J1-L APDS HEAT HEP/W Gnd Open Open Open Bright Dirn Dim Open Gnd Open Open Dim Bright ,Dirn Open Open Gnd Open D im Dirn Bright Open Open Open
14、Gnd D im Dirn Dirn 3.3.1.1 Amo selection indication. With the input voltage applied, all four selection indicators shall be dimly illuminated under normal room ambient lighting conditions, With the input pawer return line at 3J1-V connected in any order to each of the pins listed in table I, the cor
15、responding selection indicator shall increase in brightness with respect to the remaining indicators as specified in table I. (See 4.6.2.1) Connector Pins 351 Button Not Button From To Pushed APDS G C 10 megohms min, HEAT G D 10 megohms min. 10 megohms min. F 10 megohms min. FSDS G. HEP/WP G E TABLE
16、 I, Brightness of ammo selection indicators. F I I Button Pushed 0.4 ohms max. 0.4 ohms max. 0.4 ohms max. 0.4 ohms max. 1 1 I FSDS 1 i Bright 3.3.1.2 Ammo selection. With the pushbuttons operated as specified in table II, the associated resistances shall be as specified in table II. (See 4.6.2.2) 4
17、 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-48459B(AR) 3.3.1.3 Tank moving and stationary selection. With the toggle switch in the positions in table III, the corresponding resistance shall be as specified in table III. (See 4.6.2.3) I Ret
18、 urn I connector pin I Condition 3J1-M 3J1-N 1 2 TABLE III, Moving and stationary continuity test. Connector Pins 331 Toggle Switch Position STATIONARY 0.4 ohms max. 10 megohms min. 10 megohms min. 0.4 ohms max. 10 megohms min. O .4 ohms. max. Moving or stationary . indicator % MOVING:. . green STAT
19、IONARY: red 3.3.1.4 Tank moving and stationary indication. With the.input voltage applied and with the input power return line at 3J1-V connected in any order to each pin specified in table IV9 the corresponding specified indicator shall illuminate and the other indicator shall remain off. (See 4.6.
20、2.4) r 3.3.1.6 CTS INTLK. The resistance between 3J1-b and 3J1-c shall be not greater than 0.4 ohms. (See 4.6.2,6) 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-48457B 12 M 777790b 0320707 3 MIL -S -4845 9 B ( AR) 3,4 Seali,ng. With an inte
21、rnai dry nitrogen pressure of 5.0 i- 0,l pounds per square inch gauge (psig), the assembly shall exhibit a pressure drop not greater than 0.2 psig for not less than 2 hours. All manual contrals of the assembly shall be exercised during this time period. purged with dry nitrogen in accordance with BB
22、-N-411, type I, grade B, class 1 which has a dewpoint not greater than -25OF. shall be 0.0 + 0.2 - 0.0 psig. The assembly shall be The final nitrogen pressure (See 4.6.4) 3.5 Environmental. 3.5.1 Shock. The assembly, shall be capable of operating as specified herein after exposure under the conditio
23、ns of 3.1.3 tn three half sine wave shock pulses of 50 + 5 gravity unit (g) for a duration of 18 + 3 milliseconds (msec) applied in each direction along three mutually perpendTcular axes. In addition, the assembly shall be capable of withstanding three half sine wave shock pulses of 125.0 + 12.5 g f
24、or a duration of 0.6 + 0.2 msec applied in each direction along tkee mutually perpendicular axez. (See 4.6.3.1) 3.5.2 Vibration. The assembly, shall be capable of operating as specified herein after exposure under the conditions of 3.1.3 to the vibration profile on figure 1. Duration of exposure sha
25、ll be not less than 80 minutes in each of three mutually perpendicular axes. (See 4.6.3.2) 3.5.3 Operating Temperature. The assembly shall be capable of operating as specified herein over the operating temperature range of -25OF to + 125OF. (See 4.6.3.3, 4.6.3.4 and 4.6.3-5) 3.5.4 Storage Temperatur
26、e, The assembly shall be capable of operating,as specified herein, after exposure to storage temperatures ranging from -65OF to t 160OF. (See 4.6.3.3, 4.6.3.4 and 4.6.3.5) 3.5.5 Humidity. The assembly shall operate as specified herein at up to 100.percent relative humidity. (See 4.6.3.6) 3.5.6 Altit
27、ude,. The assembly shall operate as specified herein under the following conditions.: (See 4.6.3.7) a. During exposure to an atmospheric pressure equivalent to 10000 feet above sea level. b. After exposure to an atmospheric pressure equivalent to 40000 feet above sea level for not less than 1 hour.
28、3.5.7 Dust. The assembly shall operate under the conditions of 3.1.3 as specified herein after exposure to moving dust for not less than 12 hours at velocities up to 1750 feet per minute. (See 4.6.3.8) 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
29、,-MIL-S-48LI57B 12 m 777770b 0320708 5 m MI L-S48459 3 (a) 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-48457B 12 9979706 0320707 7 m 3.5.8 Sqlt fog. The assembly shall operate as specified herein after exposure to a five percent sodium ch
30、loride atomized spray for not less than 48 hours. (See 4.6.3.9) 4, QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract, the contractor is responsible far the performance af all inspection requirements as specified herein. Except as otherwise spe
31、cified in the contract, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform D any of the inspections set forth in the specification ,whe
32、re such inspections are deemed necessary ta assure eupiplies and services conform to prescribed requirements. 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: 1. First article inspection (see 4.4). 2. Quality conformance inspection (see 4.5).
33、 4.3 Inspection conditions. Unless otherwise specified, all inspections shall be performed in accordance with the quality assurance provisions of MIL-F-13926 and the conditions of 3.1.3. 4.4 First article. The requirements for first article approval and the designation of responsibility for first ar
34、ticle inspection to either the GovveFnment or the contractor- shall be specified in the contract. 4.4.1 Sample. The first article sample shall be two assemblies, selected at random by the Government representative from the first five production assemblies. 4.4.2 Inspection. The sample shall be subje
35、cted to ,all the inspections in table V. ,. 4.4.3 Failure. Failure of any assembly to meet any requirement shall be cause for refusal to grant first article approval. The Government reserves the right to terminate first article inspection upon any failure of any assembly to comply with any stated re
36、quirement. 4.4.4 Responsibility. The contractor, whether or not responsible, shall inspect the sample for conformance to all contractual requirements and shall submit a record of this inspection with the sample and certificates of conformance for materials. The Government reserves the right to witne
37、ss inspections performed by the contractor. 8 PRDBLEM HARD CDPY Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-LI457B 32 m 777770b 0320730 3 m Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 MIL -S -4 8 45 9 B ( AR) TABLE V. First article te
38、sts. Characteris tic Ammo selection indication Amo selection Tank moving and stationary Tank moving and stationary Brightness control CTS INTLK Fabrication select ion indi cat i on General Specification Sealing A and B High Temperat Ure Low Temperature Vibration A . Humi dit y A1 tit ude Shock Dust
39、. Salt fog Temperature cycling Requirement 3.3.1.1 3.3.1.2 3.3.1.3 3.3.1.4 3.3.1.5 3.3.1.6 3.1 3.1.2 3.4 3.5.3 and 3.5.4 3.5.3 and 3,5.4 3.5.2 . . 3.5.5 3.5.6 3.5.1 3.5.7 3.5.8 3.5.3 and 3.5.4 Test Procedure 4.6 2.1 4.6.2.2 4.6.2.3 4.6.2.4 4.6.2.5 4.6.2.6 App 1 i cab1 e dr awings - Visual MIL-F-1392
40、6 - Visual 4.6.4 4.6.3.3 4.6.3.4 4.6.3.2 4.6.3 6 4.6.3.7 4.6.3.1 4,6.3.8 4.6.3.9 4.6.3.5 4.5 Quality conformance inspection. 4.5.1 Procurement conditions. The following inspection plans shall apply where the assembly is procured for use as a: Use - a. Logistics spare assembly apart from the next hig
41、her assembly b, Component assembly of the next higher assembly 4.5.2 Inspection plan A. Plan A and C B and C 4.5.2.1 General sample and tests. One assembly, as a control sample shall be selected at random by the Government representative from each 100 assemblies produced and shall be subjected to al
42、l the tests in table VIIS 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-48457B 12 9777906 03207LL 5 4.5.2.2 Environmental sample and ,tests. Three assemblies, as a control sample, shall be selected at random by the Government representative
43、 from each 50 assemblies produced or from each months production, whichever occurs first. assembly in the sample, All the tests in table VI11 shall be applied separately to each 4.5.2.3 Acceptance. Where any one assembly of either sample fails to meet any specified requirement, the lot shall be reje
44、cted. Rejected lots shall be subject to the provisions of MIL-STD-105. 4.5.3 Inspection plan B, 4.5.3.1 Sample and tests. The sample shall be selected by the Government representative in accordance with the provisions of MIL-STD-105. tests in table VI1 and only the test f item 307 in table VI11 shal
45、l be applied . All the 4.5.3.2 AccepCance. Acceptance and rejection shall be in accordance with MIL-STD-105. , 4,5,4 Inspection plan C. 4.5.4.1 Sample and tests, Each assembly in every lot shall be subjected to all the tests intable VI and shall be examined visually for completeness, improper assemb
46、ly and evidence of poor workmanship. 4.5.4.2 Acceptance. Where any one assembly fails to meet any specified requirement, the defective assembly shall be removed from the lot and resubmitted only after all defects have been corrected. 4.5.5 Inspection equipment. Unless otherwise specified in the cont
47、ract, the contractor shall supply, maintain and calibrate inspection equipment in accordance with the provisions of MIL-1-45607 and MIL-STD-45662. 4.5.6 Packaging inspection, The sampling and inspection of the preservation - packaging, packing and container marking shall be in accordance with the pr
48、ovisions of packaging data sheet P11732600. 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. MIL-S-48457B 12 7777706 0320732 7 Ammo selection indication Amo selection Tank moving and Tank moving and Brightness control CTS INTLK stationary selecti
49、ons stationary indication Sealing A Item - 101 10 2 103 104 105 106 107 3.3.1.1 3.3.1.2 3.3.1.3 3.3.1.4 3.3.1.5 3.3,1.6 3.4 TABLE VI, Performance tests. Item Characteristic Requirement 301 Fabricat ion 3.1 0 302 General Specification 3.1.2 .- Test Procedure Applicable drawings - Visual MIL-F-13926 - Visual Test Procedure 4.6.2.1 4.6.2.2 4.6.2.3 4.6.2.4 4.6.2.6 4.6.4 4.6.
