1、 MIL-D-70484 13 777990b 035479b 8 = c -/5-75 MIL-D-70484(AR) 30 NovE$IBER 1984 MILITARY SPECIFICATION DISPLAY UNIT, FOR ROCmT MANAGEMENT SUBSYSTEM M138 This specification is approved for use by the U.S. Army Armament, Munitions and Chemical Command and is available for use by all Departments and Age
2、ncies of the Department of Defense. 1. SCOPE . 1.1 Scope. This specification covers requirements, quality assurance provisions, and preparation for delivery for Display Unit, gor Rocket Management Subsystem, M138. 2. APPLICABLE DOCUMENTS 2.1 Government documents. * =r 2.1.1 Specifications, standards
3、 and handbooks. Unless otherwise specified (see 6.2), the following specifications and standards of the issue listed in that issue of the Department of Defense Index of Specifications and Standards (DODISS) specified in the solicitation, form a part of this Specification to the extent specified here
4、in. SPECIFICATIONS MILITARY MIL-E-5400 - Electronic Equipment, Airborne, General Specification for MIL-C-6781 - Control Panel: Aircraft Equipment Rack or Console Mounted MIL-P- 7 788 - Panels, Information; Integrally Illuminated Plate, Tags and Bands for Identification of Equipment MIL-W-63150 - Wea
5、pons and Support Material, Standard Quality Assurance Provisions for MS25212. - Control Panel, Console Type, Aircraft Equipment, Basics Dimensions FSC 1310 Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addr
6、essed to: Commander, US Arm Armament Research and Development Center, Attn. DRSMC-QA, Dover, New Arsey 07801 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. I I f THIS DOCUMENT CONTAINS - Control Panel Inter
7、face Assembly; Central Processor Assembly; Memory Assembly; Built-In-Test Assembly; Input/Output Assembly; Power Supply Assembly and Motherboard Assembly. technical provisions for first article inspection. for the submission of first article samples by the contractor shall be as specified in the con
8、tract and 4.4. 3,2 First article inspection. This specification contains Requirements 3.3 Materials. Materials shall be in accordance with applicable drawings , specifications and standards comply with all requirements specified on Drawing (Dwg) 9324107, all associated drawings, and with all require
9、ments specified in applicable specifications and standards. The DU shall be constructed to meet the requirements of MIL-E-5400, for Class 1A equipment. Because of compact design of the DU Power Supply, a maximum of five wires may be terminated at a terminal. 3.4 Design and construction. The M138 Dis
10、play Unit shall 3.4.1 Interchangeability. All Display Units .manufactured to this specification shall be functionally interchangeable as defined in MIL-STD-280, Interchangeability shall exist between units and all replaceable assemblies, subassemblies and parts having the same part number. 3.4.2 Pre
11、conditioning (burn-in) . The “burn-in“ shall be conducted in accordance with, Burn-in Test Procedure, 12011785. 3.4.3 Characteristics. 3.4.3.1 Performance. The performance characteristics of the DU shall be as defined in the following paragraphs. 3 Provided by IHSNot for ResaleNo reproduction or net
12、working permitted without license from IHS-,-,-MIL-D-70484 (AR) 3.4.3.1.1 Front panel. All DU controls shall be mounted on the front panel. selector switches, range and penetration selector switches, selector switches for ontrolling rate of fire, firing mode and quantity, five zone arm pushbutton sw
13、itches, and a push to test switch. number of rockets remaining to be fired for each zone. rocket tubes in four different launchers into five firing zones, The zones shall be grouped as shown in Figure 1. Each zone must be loaded with rockets having the same warhead/fuze combination with the warhead/
14、fuze selector switch being set accordingly, Each warhead/fuze selector shall have 12 positions with the following legends and associated information, Auto Pos i ti on Legend Warhead Type Type Rat e Controls shall include warhead/fuze type A rounds remaining display shall be used to indicate the 3.4.
15、3.1.1.1 Warhead/fuze selectors. The DU shall divide Switch RC Fuze 1 2 3 4 5. 6 7 8 9 ?Q 11 12 CHF MPS SMK ILM FLC H17 w HDP HRC HPX HPD -c Chaff Multipurpose RC Smoke RC Illuminating RC Flechette RC H17 lb High Explosive White Phosphorous Point High Explosive Dual High Explosive RC High Explosive P
16、roximity High Explosive Point Detonating Special Purpose Det onat i ng Pur pos e 4 xM43 9 xM43 9 xM439 xM43 9 xM43 9 None None None 433 None None None Fast Fast Fast Fast Fast Slow Fast Fast Fast Slow Fast Fast Provided by IHSNot for ResaleNo reproduction or networking permitted without license from
17、 IHS-,-,-3.4.3.1.1.2 Range selectors. The DU shall provide two thumbwheel switches for the selection of range for use with XM439 fuzes. Switch settings below 0.5 km shall be interpreted as O. 5 krn .and settings between 6.1 and 6.9 km shall be interpreted as 6.9 km. An eighth position of the most si
18、gnificant switch shall be included for the automatic range selection. time of function for each setting. most significant switch, the RMS will accept range data from the Fire ControI Computer (FCC). In the absence of or failure of an FCC, the RMS will revert to a default range setting of 3.0 km. Sel
19、ectable ranges shall include 0.5 to 6.0 kilometers. Table 1 shows the In the “A“ position of the , TABLE I. Firne of flight for range settings (contd). Range (KM) Time (Sec) 0.0 .950 0.1 .950 0.2 .950 0.3, .950 O. 4 .950 I 9 0.5 O. 6 0.7 O. 8 o. 9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2
20、2.3 2.4 .950 1.175 1.375 1 + 600 1.775 1.975 2.175 2.375 2.600 2.825 3.050 3.300 3.550 3.800 4.075 4.325 4.750 4.900 5.200 5.500 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-8 MIL-D-7048q 13 777770b 0355003 b M MIL-D-70484 (AR) TABLE I. Time of
21、flight for range settings (contd). Range (KM) 2.5 2.6 2.7 2.8 2.9 3.0 3 1 3.2 3 3 3.4 3.5 3.6 3.7 3.8 3.9 4. O 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5. O 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 Time (Sec) 5.775 6.100 6.425 6.725 7.075 7.375 7,725 8.075 8.425 8.800 9.150 9.525 9.900 10.275 10.650 11.050 11
22、.425 11.850 12.275 12.700 13.125 13.550 13.975 14.400 14.825 15.275 15.725 16.225 16.700 17.200 17.700 18.200 18.700 1922!5 19.725 6, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-70Ll 13 m 7777706 0355002 8 . a MIL-D-70484 (AR) TABLE I. Time
23、 of flight for range settings (contd), Range (KM) 6. O A Time (Sec) 20,275 7.375 (3.81CEvI Default Condi tion) shai with FCC. 3.4.3.1.1.3 Penetration selector, A single thumbwheel switch 1 be provided for selecting penetration after impact for use , XM433 RC fuzes. In the absence of an FCC, the time
24、 of function shall be as Time of function shall be taken from the shown in Table II. TABLE II. Penetration/tirne conversion. Penetration (M) SQ BNK 10 - 15 20 25 30 35 40 . 45 Time (M Sec) O 20 30 110 200 325 450 525 575 600 3.4.3.1.1.4 Rate selector. The rates of fire, selectable by means of the se
25、lector switch, shall be: slow (180 + 18 milliseconds), fast (60 + 6 milliseconds for non-RC-fuzed rounds and XM433 RC fuze, 70 + 7 milliseconds for XM439 RC fuzed rounds), and automatic rate, depending on type of warhead, as listed in paragraph 3.4.3.1.1.1. 3.4.3.1.1.5 Mode selector, By means 05 the
26、 Front Panel mounted mode selector switch, the DU shall be capable of providing the following modes of fire: 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ -I_ MIL-D-70484 13 W 777770b 0355003 T W MIL-D-70484(AR) SNG Single fire - One round from
27、 one launcher, successive firings shall alternate between launchers from side to side to maintain weight balance. PRS Pair Fire - Two rounds, one from each side of the aircraft. QAD Quad Fire - Four rounds, one from each launcher with the inboard rockets leading the outboard rockets by 30 - + 5 mill
28、iseconds. The DU shall revert to the next lower mode of fire if rockets are not available for the mode selected, 3.4.3.1.1.6 Quantity selector. By means of the Front Panel mounted Quantity selector switch, the DU shall be capable of selecting the Quantity of Rockets to be fired. The DU shall cause t
29、he preselected number of rockets to be fired with each depression of the wing stores firing switch as long as the switch is held. If the wing stores firing switch is released before the required quantity is released, the DU shall cease firing within one firing cycle. A successive depression of the w
30、ing stores firing switch shall begin a new firing sequence. I 3.4.3.1.i.7 Zone arming switches. The five zone arm pushbutton switches provide the means of arming the zone for a particular type of warhead. Zones shall be armable if the master arm switch is in the “ARM“ position and a zone arming swit
31、ch is depressed. A successive depression of a zone arm switch will cause the previously armed zone(s) to be disarmed and zone selected if previously unarmed to become armed. This action may he performed while firing or not firing rockets. The depression of a zone arm switch shall arm or disarm all z
32、ones having the same warhead type selection. 3,4.3.1.1,8 Test switch. The DU provides a single press-to- test switch for the purpose of executing a complete built-in test function of the RMS. The test shall only be executable with the master arm switch in the standby position, The test may be inTtZa
33、ted while on the ground or in flight. During the test the following visible action shall take place. 1. AIldisplay indicators shdi be lit for approximately 3 seconas, 2, The display shall indicate the status of each LRU within the RMS for approximately 3 seconds in order from left to right, eft outb
34、oard OU, left inboard OU, DU, right inboard OU, right crutbaar OU. A good LRU shall be signified by the presence of a “7“ In the zone display, a failed unit shall be indicated by a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - MIL-D-70484(AR) bl
35、ank display. A blank in the DU position shall indicate a failure in the PCC communications link, as no other “soft* failure shall exist. ,A “hard“ failure of the DU shall cause an ail “8“ indication on the display and al1 controls to be non-functional. Power may be recycled to the DU and the test re
36、peated. 3.4.3.1.1.9 Display. The DU provides a rounds remaining display on which the number of rockets remaining in each zone is displayed. controlled by the helicopter panel lighting circuitry and shall be compatible with both daylight and night vision modes of operation. Characters shall be discer
37、nable in a 100,QOO foot-candle environment with the control set to full brightness or if the control voltage is less than 0-6 VDC (panel lighting control “off“). Display color shall be aviation red per automatically turnoff when the count is less than 10. In the night vision mode the display shall b
38、e compatible with the infrared night vision goggxes AN/PVS-5. The lighting intensity of the display shall. be 1 s MIL-C-6781. The tens digit of each zone display shall 3.4.3.1.1.10 Panel lighting. Descriptors and switch legends shall be lighted aviation red when power is applied and the lighting con
39、trol voltage is applied. When not lit, such legends shall appear as white lettering on a black background. Edge lit panels shall conform to MIL-P-7788, Type IV or Type V. Dimming shall be controlled by the helicopter light dimming control. The edge lit panel shall be compatible with AN/PVS-5 night v
40、ision goggles. 3.4.3.1.1.11 Zone arm indicators. The DU shall provide zone arm indicators to display the arming status of each zone. This indicator shall not be visible when the zone is disarmed except during self-test and shall be a lighted bracket on the zone arm switch when the zone is armed. The
41、 indicators shall be an integral part of the zone-arm pushbuttons and shall be relampable without disassembly of the unit. 3.4.3.1.2 Electrical interface. All electrical interface with the DU.shal1 be through one 100-contact connector mounted on the back of the DU. The DU connector shall provide all
42、 interface between the helicopter and the RMS. Helicopter interface shall include standby power, master arm power, lighting control, firing signal, and fire control system. The DU shall provide power and serve as the master control unit for up to four OUS within the RMS. Connector pin assignments sh
43、all 9 - be as shown in Table III. . . , .: . -. - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Pin # 1 2 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 3. Al A2 A3 A4 A5 A6 A7 MIL-D-704q 13 m 777770b 0
44、355005 3 m MIL-D-70484(AR) TABLE III. Display unit connector J1 (contd). Signai Logic “O“ Function - V Max ADDRESS 0.4V LINES ( OUTPUT ) DATA .95 ( IN) IN/OUT e 4CV( OUT D71 NSHTDN SHUTDOWN(0UT) 0.4V NCS1 NCSO CIRCUIT SEL 0.4V NCS3 ACTIVE LO OUT NCS 2 NKDOG WATCHDOG TRIG O. 8V NCNTRO CTROL STROB 0.4
45、V NSTRD STATUS STROBE “LD HOLD ACTIVE 0.8V BUSEN BUS ENABLF: NC OU CLK 2.048 MHz o. 45 CLK OUT 1 ( OUT 1 ( OUT 1 (OUT) Lo (IN) 10 Current 10 ma -0.25 ma 25 ma 2.6 ma 3.2 ma 3.6 ma -1 ma -1.4 ma 1.0 ma - Logic “1“ I Max Volts (Min) 2.4V 2.0V( IN) 2.4V(OUT) 3.5 2.5 2.5 3.3V min 2.4V min 3.7v -1lma 200
46、 a -ici ma . -380ha -360pa -3804 a O O 130,Ua Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-D-70q84 13 W 7999906 0355006 5 = 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 NMRD NMWR NIORD NIOWR NIN
47、IT TMR ACK HLDA NC NCPU NC Twc: VCON DIMRO ROC DIMV NINTR NRST INTE ES I STBYO NC STBY STBY “TREN NXARM NC MIL-D-70484(AR) TABLE III. Display unit connector J1 (contd). NOT MEM READ NOT MEM WRIT -0.45 - NOT /O READ NOT I/ WRITE NOT INITIALIZE 0.6V 200 Hz CLK ACKNOWLEDGE O. 8V HOLD ACK 0.45V O. 4 i.
48、(OUT) (OUT) (OUT) (OUT (OUT) (OUT) (IN) (OUT) CPU I.D. (OUT THUMBWHEEL LAMP CONTR 1OV PWR SUP CONTR READOUT VOLTAGE 8 ma 2.4 1 ma 5.ov 3.6 ma 2.4V -1 ma . 3.3v 1.0 ma 3.3v ov OPEN READOUT CONTR o to 1v LAMP SUPPLY OUT/IN ma NOT RESET 0.4V 50 ma INTERRUPT O. 8V ENABLE (IN) OU ES1 TIE POINTS (NOT USED
49、) OPEN +28V STANDBY +28V STANDBY +28 STANDBY MAP RLY 1.ov . i00 ma ZONE ARM EXT O.4V 0.6 ma ENABLE (IN) 2.4V OPEN 2.3V +28VDC +28VDC +28V +28V 2.4v -900p,a Zo=lK -380p,a O ma 0.5A .100A 3A O Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-68 69 70 71 72 73 74 75 76 77 78 ?9 80 81 82 83 a4 85 86 87 88 89 90 91 92
