1、HILITARY SPECIFICATION 1.1 TUS upcification covers one type of ramota incating, electric, ircraft, turbo supercharger tachometer, range 0 to 35,000 rpi, with built-in djustable contaots designed for u80 with an extarnal waning lamp, dedgnatod gpe E-15. APPLICABLE SPECIFICATIONS, STANDARDS, ANDLICATI
2、GNS 2.1 The foliowing specifiaatlme, stsndarcb, and publication, of th 804 In effect on date of invltatioli for bids, form 8 part of thir qmdfiuati#r B the extent specified hereint SPECIFICATIONS MILITAM . MIL-sm129 mricing of Shlprusnts -T01i30 Idmtification Harking of U. S. PKiitarg Propsrty * AIR
3、 FORCLNAVP AERONAUTICAL m553 Gemerator - Electric Tachomotsr ANmoo66 ANRldrOO AM1OLO1 Case - Stand Mnisqsians for 2-3/4 Dia1 Instntasnt L * Receptacle - Electrical Connector, Inhgral Haunting hnaral8 and Lettara - Iliraraft instrument md, Standnrd Forra Of (Without Sump) 3 ,. L. o Provided by IHSNot
4、 for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-9357 66 W 9999906 0327076 -2- IIIL-T=9157 (USAF) PUBLICATION AIR FORCE-NAW AERONAUTICAL 405 Storage Life - Aeronautical ArtAcles . (Copies of specifications, standards, and publications required by contzactors in c
5、onnection with specific procurement functions should be obtained fra the procuring agency or as directed by the contracting officer.) 3. REQUIREMEEITS 3.1 The rquirementa specified in Specifications MIL-F-su3 and MIL-1-709 3.1.1 Where the requirements of the general specification and this 3.2 Design
6、 and constructiont 3.2.1 Tachometer.- The tachmeter shall consist of an indicator and are appl$.cable as general requirements of this specificrtion. specification conflict, the requirements of this specification shall govern. one tachometer generator. 3.2.2 Indicator.- The indicator shall be in acco
7、rdance with Specification 3.2.2.1 Case.- The case shall be in accordance with Standard AND10401, Mn-1-7098. except as shown on Figure 1. accordance with Specification MIEa-skl3. The mounting arrangement for the generator shall be in accordance with Specification NiL4=sierals.- !lunerals shall distin
8、ctly indicate the graduation to Any confusion resultinr? in doubt as to which graduation wldch each applies. the numeral apply will be cause for rejection. IrWn several rnunerals are used in one mp, the space between shall not be less than y64 inch. be finished in fluorescent-luminescent material in
9、 accodnce with Specification 3-1-1, Color ?io. 650 The dimensions of the markings shall be as follows 3.2.8.2 Fluorescent-luninescent material.- The following markines shall iiumerals 15, 20, 25, and 30 Graduations at 10, 15, 20, 25, Lettering, turbo RpEI 190 RPE maduations from 15 to 30 Letterinp,
10、thousands. ?werals O, 5, 10, and 35 Graduations at O, 5, and 35 100 RYTI Waduations from O to 15 and from 30 to 35 and 30 Height or Length, Inch 1/4 7/32 min. 5/32 min. 7/32 min. 5/32 1/16 . v4 5/32 min. Ilidth of Lhe or Graduation Inch kO.005 1/32 1/32 1/32 .O20 1/64 1/32 1/32 . .o20 , o Provided b
11、y IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.2.C.3 Durabledull black.- The f oilowin? rsarldngs shall be permanently and legibly marked on the dial in durabl
12、e dull black. The heicht of the maricings sh.11 be cis follows: Height, Inch USAF l/i6 3.2.9 Finish.- The background of the dial and the unsbded part of the 3.3 Identification of product.- Equipment, assemblies, and parts shaU Type d-15 1m pointer shall be finished in durable dull black, be marked f
13、or identification in accordance with Standard IlIL.TW3.30. b SATPLIUG , INSPlXTIOIJ, AX.) TEST PROCEEJRES 14.1 The.tachometer indicator shall be subjected to inspection and test8 in accordance Hi th SFecification 1.11L-I-7091.1.1 The speed at which the lamp lights shall be within S5 rpm of the cut-i
14、n speed specified herein. shall not be greater than 150 rpm below the cut-in speed, as determined in the preceding test, The sped at which the lemp goes out 4.4.2 Sampling tests.- Five indicators which have been manufactured under eseentcially the same conditions shall-be selected at rand tests are
15、Specified on a number of indicators that am selected as representative of a certain lot, and one or more of this number fails to meet the specified tests, acceptance of all indicators shall be withheld until the extent and cause reasons, individual tests may be continued pending investigation of a a
16、aj.ng test failure, but the final acceptance of the indicator is contingent.upon the inspectors decision recarding the over-all conformance of the indicator to specification requirements. exist on indicators previously accepted, full particulars concerning the defects found, including recommendation
17、s for correction, will be furnished to the Procurlng Aeency, failure is detemined. For operation If investigation indicates that the defects may J.j.,2.2 Lou temperature test =3SoC.- The indicator shall be subjected to a tanperature of -35.C for a period of one hour and then subjected to the operati
18、on test, at this temperature. vary more than 1s rpm fran those specified in the operation test at room temperature, unless within rom temperature tolerances. The cut-in and cutrout points shall not 4.L.2.3 Hirh temperature test.- The indicator shall be subjected to a temperature of k7l.C for a perio
19、d of one hour and then subjected to tho operation test, at this temperature. The cut-in and cubout points shall not vary more than 25 rpm from those specified in the operation test at room temperahre, unless within rom temperature tolerances. The average change in pointer readings obtained from this
20、 test and frm the rom temperature tests specified in Specification XL-1-7098, shall not exceed 50 rpm. 4.4.2.h Position test.- The speed of the indicator shall be increased gradually until the cut-in point is reached. With contact made nd the warning lamp on, the indicator shall be subjected to the
21、indicator position error test specified in Specification lIL-7)8. The lamp shall not be extinguished or flicker as a result of this test. l+.h.2.S Vibration test.- The indicator shall be subjected to the india ato vibration test specifiid in Specification i-nZ;.I-7098, except that the amplitudr of v
22、ibration shall be from 0.OOg to O.OU inch, and to the operation test specified herein. The cubin speed, when the indicator is subjected to vibration, shall not vary more than 20 rpm frau that 8pecified.when tested . . w4 t,hm vi hra t.i nn - - .I Provided by IHSNot for ResaleNo reproduction or netwo
23、rking permitted without license from IHS-,-,-MIL-T-9157 bb 99999Ob 0127083 I i! - - -9= 4.4.3 Special tests.- Three of the inspection somples representing the manufacturers contract or order and samples selected as often thereafter as the inspector deems necessary, shall be subjected to any or al1 o
24、f the special tests. 1.4.3. choim on Emre 3 and the cut-in and cut-out points of the warning lamp determined. the indicator vibrztion endurance test in Specification HIL-1-7098 at a vibration frequency of approximately 2000 cpm for a period of 3 hours. While beinc: subjected to vibration; the indica
25、tor shall be aperated at an indication of 100 to 200 rpm above the cut-in speed. the indicator shall be allowed to cool to room temperature and the cut-in and cut-aut points shall acain be determined as specified at the beginning of this test. shall not exceed 15 rpm. to a temperature of -5hoC for a
26、 period of 2 hours and then subjected to the operation test specified herein, shall not vary more than 20 rpm from those at room temperature, unless within the roan temperature tolerances. Vibration endurance test The indicator shall be connected as The indicator shall be subjected to vibratiion as
27、specified for . After the 3-hour period, The change in cut-in and cut-out points before and after vibration 4.14.3.2 Low tempera-b-ire test -54.C.- The indicator shall be subjected The change in cubin and cut-out points 4,4,3.3 Overspeed and reverse operation test,- The cut-in and cut-aut points sha
28、ll be determined and the indicator shall be subjected to the indicator overspeed .and reverse operation test specified in Specification En-1-7098. The indicator shall then be allowed to return to rom temperature and the cut-in and cutout points again determined. The change in cut-in and cut-out poin
29、ts shall not exceed 15 rpm unless within the roan temperature. . 4.4.3.h Endurance test,- The indicator shal be connected as shown on Mpre 3 and subjected to SO00 cycles of operation. A cycle shall be fra ! zero to approximately 2600 indicated rpm and returned to zero, acceleration shall be optional
30、. The change in cubin and cubout points before and after this test shall not exceed 1s qnn. No damage to the indicator shall result from this test and th contact element ahdl remOin-fn good The rate of worklng order throughout the test. *. b.4.3.5 Cumulative test,. After all the tests specified here
31、in have been accomplished, the cut-in and cubout speeds shai be determined. speeds shall not vary more than 25 rpm from the cut-in and cutout speeds recorded for the aperation test unless witNn the map temperature tolerances. These 5. PREPARATION FOR DELIVERY 6.1 The trchomshr shall be packaged and
32、packed for shipnent in accordance with Speciflcatia MIL434l.3 and M1GI-7098. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. MIL-T-9157 bb R 7999906 0127084 3 R rnbT-9157 ( USJIF) .* -101 -h. 5.2 MaMng of shipments.- Interior packages and exterior
33、shipping containers shall be marked in acc6rdsnce with Standard MIECTD-129. The nauencrture shall be as follows: Mppllcable data to be entered by the cantractor. 5;.2.1 Reinspection date.- Interior packages and shipping containers containing identical items shall bear the legend IVIEINSPZCTION QUIT)
34、 IF IN STORAGEAFTER data) The date entered shall be detenined by adding, to the date o +-+O manu acture, the nuinber of months specified in Bulletin No. Ir05 or.in the contract or order for the respective items. Items not contained in a shipping container (unpacked itema) shall have firmly fixed the
35、reto an approved tag or label with essentially the same legend, 5.2.2 A tac shall be attached to each tachometer, containing the followin, infomtion: Indicator, Turbo Tachometer Type E-15 Contacts set for RPN 60 NOTES 6.1 Use.- The Type E45 tachometer covered by this specification is designed to ind
36、icate the speed of the turbosupercharger and at the same time to light a warning lamp when the rated speed of the turbosupercharger is reached. the turbosupercharger and the tachometer generator. This may be achieved by the use of a proper adapter which further reduces the oil pump shaft (tachometer
37、 drive) speed to 1/20 of the turbosupenaharger speed. Adapters designed for use with turbosuperchargers are covered by Specificsticn MIL-A-6516. To connect the generator to the tachaneter drive a shortT:.pe A-2 flexible shaft in accordance with Specification MIL-F-7184 is required. 6.2 Ordering data
38、.- Invitation for bids, contracts, and purchase orders should state the conditions for the following: To operate properly there must be a 20 to one reduction between a. The cutin speed of the contacts shall be as Specified by t the United States Govern- ment thereby incurc no responsibility nor any
39、obiigation Twhatsoever; and the fzct that the Government may have formulated, furrdshed, or in any wzy supplied the said drawin-s, specifications, or other data, is not to be reFqrdcd by implication or otherdse as in any manner licensinrt the holder or any otherperson or corporation, or conveying any fights or permission to manufachre, use, or sell any patented invention that may in any way be related thereto. laen Govermient drai-s, specificationa, or other data . .- (i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
