1、M I L-E-8 189H 31 October 1975 SUPERSEDING 2 July 1973 Supersession Data (See 6.8) MILE-8189G MILITARY SPECIFICATION ELECTRONIC EQUPhENT, MlsSILES, BOOSTERS AND ALLIED VEHICLES, GENERAL SPECIFICATION FOR This specification j6 approved for me by all Depart- ments and Agencies of the Department of Def
2、ense. 1, SCOPE 1. 1 . SCOW. ms specification cower regired qpment tests. # 3.1.2 Capacitors. All capacitors shall be h accordance with MIL-STD-454, Requixement 2. Except that the use of wet slug and foil type tantalum capacitors requires approval of the procuring activity. 3.1.2.1 Mounting of ffxed
3、capacitors. Fxed capacitors shall kc securely mounted. “bey shall not be rncnmted by -STD-454, Requirement 33. *I I 3.1.17.1 External voltmeter resistors. External voltmeter resistors shall be ln accordance with MIL-R-39005. 3.1.17.2 Tapped resfstom. The use of fixed and variable resistors having fi
4、xed taps requires procuring activity approval. 3.1.17.3 Mountinp; of resistors. Resistors shall be securely mounted Ln such manner a8 to allow for expansion with temperature changes. Tbey shall not be mounted by their wire leads without providing oar mechanical support for the body cd the resistor,
5、except that resistors whose weight 8 1/2 ounce or lese may be secured by only their leads if, tbe total length of both leads measured between the pointa ca the resistor from which fhe leads egmss and the midponts of the lead attachment termtnals, does not exceed 1. O inch. In no cme shall the wh lea
6、ds be less than v4 nch, except for printed circuit applications and in nonreparable items, 9.1.18 Soldernq. Solderfng shall be in accordance with MIL-STD-454, Requirement 5. 3.1.18.1 Mechanical aasemblles. Unless specfically approved by the procurlng activity, no aeembly shall deperd solely on soft
7、eolder for mechanical strength, except for variable capacitor plates and eectiow ad other relatively lght parte tist are of accepted commercial desgn and that have, by actual use proved to be generally suitable for use ln electronic equipment. 0164 Provided by IHSNot for ResaleNo reproduction or net
8、working permitted without license from IHS-,-,-MIL-E-8lWH E 9.1.19 8prlwe. Springe shall conform to “454, -re- mnt 41. 3.1.20 Swtcbee. Swtcbes ehall be i accordance with MIL-STD-464, for such parts, riveting or hlting may be wed. 3.2.3 Thermal desip Cooling provisions ad thermal design shall be Ln a
9、ccoxdance with MIGSTD-454, Requirement 52, except that the marking requiremente shall not apply. 3.2.3.1 Cooling design performance limit and evaluation data. Cooling design data shall be submitted as soon as possible in addition, and wbere applicable for captive and nonoperating flight, the equipme
10、nt shall maintain proper operating pressure for periods up to 24 haws. Unless otberwse determined 88 sntfsfactory, the loss of pressum shall RO exceed 5 pounde in a %-hour period at tbe altitude ad temperature speci- fied in the deu epecffication. 17 77 Provided by IHSNot for ResaleNo reproduction o
11、r networking permitted without license from IHS-,-,- MIL-E-BLBSH GD M 747970b 0445377 T M MIL-E-8189H . If required, a desiccant shall be provided within the cae. j. Parta wed in pn?ssurizsd contalner must meet tbe require- ment8 af th6 Epeclfication, except tbat tbe ; 2 -. -dperating condtion shall
12、 withstand long periods of exposure to the temperature extremes and shock as listed n Table I. 3.2,18.2 Altitude. Each class of equipment shall meet the oppucable altitude conditiog Ifatad in column VTII of Table I both for cmtiwms operaion Md expmre in n nonoperating coldition. Tke altitude may rem
13、ain corntant for long pride pnd vary at a rate 98 high as O. 5 Fnch of mercury per second, 18 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MLLE-8189H . 3.2.18.3 Temperahrre-altitude comblnatm. Tbe equipment ehall operate uader tbe applicable tempe
14、rature-altitude cmbtnatione shown ln Figure 2. 3.2.18.4 Humidity. The electronic equipment ahall provide the required performance, including tb periods af duty cycles for testing, der codtions of relative humidlty up to 100 percent at temperatures up to 50“ C, tncluciing conditions wbeh condensation
15、 takes place in Md on tbe equipment. 3.2.18.5 Vibration. The vibration requirements shall be as specified in the detail equipment specification. 3.2.18.6 Shock. When normally mounted, equipment shall not suffer damage or subsequently fail to provide the performance specified in the detatl equip- men
16、t specification when Bubjected tc 18 impact shocks. of 15g, consititing of 3 shocks in opposite directions along each of 3 mutually perpendicular axes, each shock impulse having a time duration of 11 2 1 milliseconds. The l1gf1 value shall be within 10 percent when measured with a O. 2 to 250 Hz fll
17、ter, and the maximum shall occur at appraxrnately 5-1/2 mflliseconds. * 3.2. 9.6.1 Bench han-. The equipmentphall withstand tbe shock envi- mnment encountered during servicing. 3.2.18.7 Sand and dust. The equipment shall withart d the carrying vehicle. Examples: Rigid or whip antenna, bracket, cable
18、 assembly, fairlead, mounting, and plug. # 6.3.6 Removable assembly. A removable assembly Le defined as an usembly which is easily removable from the carrying vehicle. Examples: dyna- motor unlt, Micator unit, radio mceiver, and radio transmitter. * 6.3.7 Electronic etandard specification. For the p
19、urpose of this specification, electronic standard specifications are those listed in Appendix A. 6.3.8 Electronics. The term ttelectrontcstt is defined as a eystem, or equipment, the primary purpose of which ia the transmission or reception ob ntelligence, and includes or comprises, communications o
20、r signal equipment, radio, radar, radiation, radi-controlllng devices, meteological, fire control, bombing, flight and navigational instruments, powerplant controls, synchronizers, photographic and test equipment when mcb portlona employ circuits which utilize a combination of electrical or electron
21、ic devices to generate, control, frdicate, or record any form d alternating or direct curmnta, or bcth. 6.3.9 Hermetic seallng. Hermetic senkg itl the process by which an item is totally enclosed by a suitable metal struckre or caie by hion d metallic or cenunic materiale 80 that no gas or liquid ca
22、n enter or escape. This includes the fusion of metals by welding, brazing, or soldering, the fusion of ceramc materfale der heat or pressure, and tbe hion of ceramic materials into a metallic support, ! 6.3.10 Interconnecting cable. Interconnecting cable 1s an assembly of a deflnite contous length d
23、 one or more insulated, parallel or twisted electrical coaductors having both ends terminated with flttings which provide for connections to components of an electrical circuit. 24 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-WGE-8189H 6.3.11 Inte
24、rmittent and short-time operations. Intermittent and 8h01-t- the operatiom are tbe altenmtng periods of opertlcm for tbe specified time followed by 15 minutes of nonoperation. 6.3.12 Resriered production equipment. Reordered production equip ment is equipment procured on each contract after the orig
25、inal Category III contxact for the equipment, regardless of the contractor. For example, if contractor lfXc is granted the original production, then the equipment procured on a second or sub- sequent contract is considered mordered produdion equipment, whether it is procured from contractor “X“ or a
26、 new contractor. 6.3.13 Procuring actvity. The Wtary or Federal agency contracting for equipment. 6.4 Use of helium. Helium should not be used p8 a pressurizing gas h sealed units containing electron tubes. When it is necessary to use helium for leak detection purposes, exposure should be limited to
27、 the time necessary for the test, followed by thorough purging. 6.5 FLnisbes. Changes necessarpto dtary specifications be- lieved mquired by 3. l. 9 should be brought to the attention of the procuring activity. . 6.6 Publications. In the design of electronic equipment, coneidera- tion should be give
28、n to the information contained in the following publications: a. Handbook, Pmfermd Circuits, Navy NAVAIR-16-1-519, Aeronautical Electronic Equipment Vol. 2 b. Electronic Circuits MIL-STD-439 6.7 Detail equipment specifications. She ths specification covers only the general requirements for parts, ma
29、terials, processes, design and construc- tion, the detail equtpment specification, contract, or order should specify actual requirements from the multiple choices or exceptions available in the following para- graph. a. Classification requirements (1.2 and 6.2) b. Exterior finish requimments (3.1.8)
30、 c. Accessibility (3.2.9) d. Maintainability (3,2.8) e. Orientation (3.2.14) 25 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 MIL-E-BLBSH GD 7777906 Oql.15207 5 II MIL-E-8189H f. g. h, i. 1. ka 1. m. Methode of maintaining pmssure (3.2.15(g) Alti
31、tude requirement h specifying air leakage (3.2.15(h) Service coediticm (e-lectrical) (3.2.17) (detailed power requirements) Warmup tLme (3.2.17.1) Vibration (3.2.18.5) Meters (3.1.15) Thermal design (3.2.3) Electromagnetic interference characteristics (3.2.6) 6.8 Supersession data. This issue of MIL
32、-E-8189 supersedes all previous issues of MIL-E-8189 for new designs. Previous iseues of MIL-E-8189 remain Ln effect to cover the procurement of previously designed equipment. 6.9 Changes from previous issue. The margins of this specification have been marked with au asterisk to indicate where chang
33、es, from the previw issue bave been made. Thfs has been done as a convenience only and the Government 88sumes no liability whatsoever for any inaccuracies in thse notations. Bidders and contractors are cautioned to evaluate the requtrements of this document based on the enti= content, irrespective o
34、f tbe original notations and relationship to the Last p=eoUEl iesue. 28 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MZL-E-8189H I I I x I I- l I “ I “ 1 Pt“ I+ 6 z O -U I I 1 I I l ;3K ja$ Lo P O o E; Provided by IHSNot for ResaleNo reproduction
35、or networking permitted without license from IHS-,-,-MIL-E-BLB7H GD H 9979906 0445207 9 H KlL-E-8189H O c c 8 L O 0 O h 3 8 O t O n Iz O c O O I c O rn I O o I O t I sr 1 8 O h Q n O Q O * Q O o Q O c1 8 O c O F V k NOTE: Flgure 1 of pmvbus Lmee ha6 been deleted 28 Provided by IHSNot for ResaleNo re
36、production or networking permitted without license from IHS-,-,-MTL-E-8189H 8 c 8 O .D O h O -0 O n O O 0 O n O - O O - I O n O n I O I W O YI I U C W tY 2 & C E a Y I 29 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-O h O o c O a c O -. c O n L O PI c O c c 8 8 c O 0 O h O O n O W O o O n O c O 2 I O n I O o O W I O n 185 30 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
