1、MIL-E-45762 10 m 7797706 0307623 4 m MIL -E - 45 9 62 ( FJC ) 29 June 1976 MILITARY SPECIFICATION ELECTRONIC COMPONENTS LGSEMBLY (11691622) Tkiis specification is approved for use by the Rock Island Arsenal, Department of the Army, and is available for use by all Departments and Agencies of the Depa
2、rtment of Defense. 1. SCOPE 1.1 Scope. This specification covers one type or electronic com- ponents assembly (ECA) for use in the 1428x31 Helicopter Armament Sub- system. 2. APFLICABLE DOCMENTS 2.1 issues of documents. The following documents, of the issue in effect on date of invitation for bids o
3、r request for proposal, form a part of this specification to the extent specified herein: SPECIFICATIONS Military MIL -W -1385 5 MIL-P-14232 MIL-1-45607 - Weapons: Small Arms and Aircraft Armament Subsystems, General Specification for - Parts, Equipment and Tools for Army Materiel, Packaging an? Pac
4、king of - Inspection Equipment, Acquisition, Maintenance and Disposition of c Fed eral Fed. Std. No. 356 - Commercial Packaging o Supplies and Equipment Military MIL -sTD -105 MIL-STD-1.09 MIL -s-721 MIL -sm-781 - Sampling Procedures and Tables for - - Definitions of Effectiveness Terms for Inspecti
5、on by Attributes Quality Assurance Terms and Definitions Reliability, Maintainability, Human Factors and Safety t ion - Reliability Test Exponential Distribu- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-LI59b2 10 M 777770b 0307622 b M t I m
6、LICATIONS Rock Island ArsenaJ FXL691622 - Packaging Data Sheet - for Electronic Components Assembly n drive signal input.l * The equalizer, (1,000 ohms + 100 ohms from each side to ground Pin P and B of AlP3.) :?ith an input on the swmning and power anplifier AlJl-L, the Pin AP34 . out of phase with
7、 AlJ1-E. The Its purpose is With a drive signal towardg eithes With anything Reverse input drive signals when either limit switch is actuated Variable resistors are .placed in series with the limit switches to compensate for slight differences 4 Provided by IHSNot for ResaleNo reproduction or networ
8、king permitted without license from IHS-,-,-MIL-E-45762 LO W 7777906 0307625 L E EEL -3 -45962 ( wc ) 3.3.4.4 Elevation equalizer amplifier circuit card assembly (AlA5A4.2. This CCA is the elevation channel counterpt of A1A5A3 above, with the exception tbat the limit etrcuit is not provided. the ele
9、vation servo valve. The same gain and phase relationships shall hold for the eievation equalizer qlifier card as for the azimuth equalizer ammifier, except the output to the servo valves shall be on Pins F and G of AlP3, With a 1.0 volt P-P on the equalizer input AiJl-M, the output on AlP3-F will in
10、crease 0.4 volt and the output on UP3-5 will decrease O .4 volt (nominal. values) . and power amplifier AlJl-I( the voltage gain to the output shau be 0.418 total swing. The output shall drive tlith an input on the summing 3.3.4.5 Limit-coincidence circuit card assembly (AU5Al). This CCA contains th
11、e azimuth and elevation channel coincidence trigger circuits driven by the rectified output from the azimuth and elevation coincidence aqplifiers of AIA5A2 and AlA5A5 above and shall, in the event of non- coincidence, result in.operation of the azimuth and elevation coincidence relays, Noncoincidenc
12、e is defined as 50 .i. 3 - 0 difference between the sight angle and turret angle or error. This angle error is represented by 0.87 to 1.39 volts m voltage error fed into the demodulation detector circuit cards above, signal fed into the AA5A3 and AlA5A4 CCA. This signal shall be of - sufficient valu
13、e to open either of the coincidence relays, This CCA con- tains the Reticle Flasher circuit which consists essentially of a mi- junction transistor oscillator operating nominally at 2 Hz. The output of this flasher shall be capable of actuating the reticle lamp relay whenever a noncoincidence condit
14、ion occurs. This circuit will complete the ground circuit of the reticle relay for 0.23 -I- 0,06 second and then off for approximately 0.13 second making a tohi cyccie of 0.36 + .io second. tains an elevation limit circuit that prevents mechanical damage to the turret when the sighting system comman
15、ds the turret to drive above the turret elevation profile. na1 on the two halves of the servo valve between UP3-F and G, the larger signal being on mP3-F. of the ba=lancing resistor A7R7, is energized when the turret operates the upper limit switch, AlP3-y arid connection between AlP3-y and w is bro
16、ken and a balance gignal is then amlied to the two halves of the servo valve, pins aP3-F and 5. This signai is held in balance by adjusting A7R7 at an average of 2.5 -1- .5 ma on both MP3-F and E. I -+ 1.0 ma. elevation. the azimuth position while the turret is in the simulated (elevation) stow posi
17、tion. This shall be represented by a 7.0 to 11.2 Vac This CCA, in connection with the A7 relay bracket assembly, con- This circuit develops a 1.O-to 3.0 ma down slg- This range of 1.0 to 3.0 ma includes the extremes The circuit tkt generates this signal are connected. When %he turret comes out of th
18、e limit the Pins The differential balance range shall be at-least This may be considered a simulated turret stow position in The sighting system will continue to have full control of The turret will stay in the simulated stow position until a 5 Provided by IHSNot for ResaleNo reproduction or network
19、ing permitted without license from IHS-,-,-MIL-E-L!5762 LO W 7777706 0307626 3 = mL-E-45962( FE) signal cods the turret, through pins AlP3-5 andF, to drive below the simulated stow position. This down drive signal from the sighting I station on Ain-E should be 7.0 -I- 1 millivolts P.P. in phase with
20、 the reference 400 I32; supply. This will result in an unbalance down drive sig- nal between 1433 and 15s of the A4 CCA, The voltage on 4R will need to be 20 millivolts larger than l5S in order for the sighting syszem signal from pin Alm to take control of the signal to the turret AiP3-G and F. Re-
21、moval of the action voltage de-energizes the elevation limit circuit and . the turret will return it to normal stow position, zero azimuth and zero elevation. This CCA and A7 relay bracket assembly also contains a second circuit that develops an ugdri-ve signal for the turret seco valves (an unbaian
22、ce between AlP3-F and G with the larger signal on G). signa allows the turret to follow the upper firing profile as the Furet retumis towauyis zero azimuth while in the simulated elevation stow po- sition. This updrive signal ais0 exists when the turret is in the simulated elevation stow position an
23、d is mving toward the azimuth limits, but it has no beneficial or detrimental effect for this mode of operation. I The unbaance signal. is generated when the azimuth error signal is increased and shall be present before the error signal at pin AiJl-G exceeds 0.35 volts but SU not be present with 0.2
24、0 volts or less error signal on AiJ1-G. eventually will saturate at 1.0 ma max, reference 400 iiz signal source for the system resolver chain. be adjusted to 10.0 - + .1 volt rms (Pin H of AlP3). CCA contains the elevation and azimuth tachometer amplifier circuits which receive the tachometer output
25、s from the azimth and elevation tach- ometers in the tumet instrument drive assemblies and shall amplify and introduce these outputs to the particlw summing and power amplifier. These amplifiers provide the damping functions for the azimuth and ele- vation axes. With a sine and a frequency of 0.1 Hz
26、, the voltage gain Will be approx- imately 0.174, wlJ1 be 3.5. outputs on Pins E and K of A1Jl. vation stow adjustment potentiometers. these potentiometers shall be imposed on the respective amplifiers and shall result in a discrete change in position of the turret in azimuth and elevation, for O vo
27、lts rms. tors employed in the elevation resolver output circuit. following functions: This updrive tlith lager error signals the unbalance signal will increase and This CCA contains an adjustable It shall 3.3.4.6 Tachometer amplifier circuit card assembly (AUSAG) . This The gain of these amplifiers
28、sW1 be frequency sensitive. With a sine wave and a frequency of 2 Hz, the voltage gain The inputs for this test shaJ-3. be Pins X and i: of Alp3 with This CCA contains the azimuth and ele- An adjustment in the output from The stow adjustment potentiometers shall both be adjusted This CCA shall conta
29、in the fixed range adjustment resis- 3.3.5 Relay functions. The individual relays shall perform the Testing shall be as specified in 4.5.3.2. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. J- MIL-E-95762 LO m 777770b 0307b27 5 m 3*3.5.1 Gunner a
30、ction relay A3IcL. Actuation of tilis relay snall release the turret from the stow position and permit operation of the turret from the gunners sighting system in eitner tire SAFE or “ARMED“ position. The ALK1 relay shall be actuated by the application of 26 =t 4 vdc to KLPl-Y, Actuation of Ala comp
31、letes a circuit from AlPl-E t an elevation channel preamplifier circuit, and interrupts the circuit to APl-N and UP3-D to the preamplifier circuit. 3.3.5.2 Compensation relay ME. This relay permits t;e output signals from range potentiometers and air data transducer to be intro- duced into te servo
32、system for velocity compensation. T:,e A1K2 relay shall be actuated by t;e application of 26 =t 4 vdc to AlPl-Z. connects AlPl-G to AlP2-F wit-. a resistor of i0 kilohm between ti:ese pins. Actuation 3.3.5.3 Arming relay UK3. T-.e actuation of tsis relay Siid1 close the circuit from the 26 i- 4 vdc
33、unswitcked line to the armed bus in the electronic components assembly, placing the system in tile armed state and in readiness for trigger actuation, and tae “ARMED“ lights shall be on. 1 The AlK3 relay dial1 be actuated, following actuation of fil.6, by 26 - =t 4 vdc applied to any of tne followin
34、g: UP5-L or V Upon actuation of AlK5 by 26 - =t 4 vdc applied to AlP5-c and 26 - i- 4 vdc applied to UP5-S. Actuation of AlK3 supplies 26 =t 4 vdc from GG and EX of ALP4 to: AlP5-w AlP3-u AlPl-R AlPk-DD,r, Upon actuation of from GG and EE of nP4. relay, 26 - =t 4 vdc is supplied to AlP1-B 3.3.5.4 Tu
35、rret power relay AlK4. The contac% on this relay shall introduce 26 i- 4 vdc to the turret power bus and to the dc-to-c con- verters, therby permitting control of the turret with the system in the “SAFE“ mode. The AlK4 reiy shall be actuated following actuation of u6 and one of tie following conditi
36、ons: 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-45762 LO 7999906 0309628 7 U Mz-E-45962( WC) Upon actuation of - A1K8 mKJ-5 - - u5 I AlKLl and AIm.2 With 26 2 4 vdc applied AlP4-z AlPl-A UP4-T AlPl-A AlP5-5 AP5, Pin X, C and Y AlP4-G AlP
37、3-s Interrupted by actuation of NK5 ALK5 or Ala5 Either Alm or AlKl.2 de-energized The ALK4 relay shall remain actuated while 26 - + 4 vdc is applied to either of the following: Terminal Interrupted by actuation of AlP3-R UP5 -5 AlP4-AA 3.3.5.5 Pilot override relay MK5. This relay shall close the ci
38、rcuit fromthe 26 + 4 vdc unswitched line to the gunner control bus and the armed bus and sh: 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ MIL-E-5762 LO 7799706 0307630 5 MIL -E -45 962 (.IC ) Upon actuation of With 26 f 4 vdc applied . Inkerru
39、pted by actuation of - A$Pk- UKO (relay may cycle) Ala4, AlKl.2, AlKl.1 AlP3-K De-energize AlKl-4, ILlKl.2, or AlKlL 3.3.5.10 Azimuth coincidence AlICL1, This relay shall be de-energized The relay action shall switch the reticle relay (AJ-K) coil into wnen the signal resulting from azimuth noncoinci
40、dence attains the required level. the flasher circuit, and shall interrupt the firing circuitry. lay is normally energized. AlKi1 re- 3.3.5.U Elevation coincidence AlKl-2, This relay sl:all de-energize AlKi2 shall also be during elevation noncoincidence and shall produce tiie same result as noted fo
41、r AlKu above. energized from a 28 volt signal applied to Pin D of AlPl which simulates , a condition where the gunners sight trigger switch is pulled before the action switch to prevent firing before the out of coincidence error can be acted upon. 3.3.5.12 7.6h, bnrm firing Aue3 and 4Omm firing AlKl
42、.4. These relays are operated in wa-Uel-toovide sufflcient contacts to per- form the required functions. firing a hmm weapon or when two bmm weapons are installed. shall assist the trigger logic circuitry. repiace the 7.62mm range compensation resistors with the bmm compensa- tion resistors in the r
43、ange adjustment circuits when a bmm weapon is being fired. AlKL2 is normally energized, These relays shall be energized when AlKI-4 Relay AlKl.3 shall simultaneously The AK3.3 and AlIU.4 relays shall be actuated by any of the following conditions : Upon actuation of Wien 26 5 4 vdc applied Interrupt
44、ed by actuation of - UP3 -T - A6K3 AlPl-s A6KL or 613 de-energized The action of NU3 supplies 26 vac, bo Hz to Al=-E. 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-E-q5962 20 773990b 0307631 7 = m-E-45962( WC) 3.3.5.3.3 Pilot control AK.5. A
45、ctuation of this relay shaJ.1 permt operation of the arrnament by the pilot (see 3.3.5.6). The Ala5 relay shall be actuated by any of the following: Upon actuation of With 26 1: 4 vdc applied Interrufle by actuation of Al AlPl-A UK8 de-energized The actuation of Alu relay or the AKi5 relay shall app
46、ly 400 EIz to the Wwer transformer AiTl. 3.3.5.14 Fail safe UKI. This relay shall be de-energized upon loss of the il5 vac, 400 Hz at UP of 7.6m and 265 rounds of bmm ammunition during a two-nour flight. A failure will be defined as a nonoccurrence of the appropriate event when power is applied and
47、the required control switches are actuated. Testhg shaU be as specified in 4.4 and 4.6.4. Testing shall be as spec- I 3.5.1 Reliability criteria. The above reliability requirements are based on a minimum acceptable Mean-Time-Between-Failure (mF) of i50 hours 12 Provided by IHSNot for ResaleNo reprod
48、uction or networking permitted without license from IHS-,-,-MIL-E-45962 10 m 9999906 0307633 O 3.6 Electromagnetic interference (ENI) . The electroma etic inter- ference (ENI) shall be as specified in the contract (see 6.27. Testing shall- be as specified in 4,4 and 4.6.5. 3.7 Interchangeability. Th
49、e six CCAs shall be interchangeable Testing shall be as specified in with CCAs of the same part number. 4.5.3.3. 3.8 Marking. Each ECA, CGA an parts for which makings are spec- ified shaL1. be clearly marked in accordance with the applicable drawings and Ma-ir-3.3855. ber assigned by the procuring activity (see 6.2). Each ECA and CCA shall be identified by a serial num-
