1、- , MIL-I-27173B bb 797770b 0134617 3 W #- MILZ2ARY SPECIFICATIOli INDICATOR, ATTTIUDE URU-2B/A 1.1 Thi8 8p.olfcation 00vor8 one typa of remote attitude dlrmator inditmtor , dorigrcated AtJ-2B/A. 2. APPUCIBIEDOC 2.1 Thr foilowing docunt8, of the 1880 in effeot on date of Invitation far bidr., form a
2、 gart of thia rpeaification to the extont 8peaified herain: - cecified, ab1 Udesa otherwise spaoifie, all siraible p0rtion.s of th 3.8.1 numesal3 and letters on the inaisritor, other than the mmeplHte, ski1 be .in accordanse with iMa33580 3.9 EUGTWIGAL COMdti;CTOMo- A SCintilb o Rivision, Bendix Avi
3、ation 6orporatio22 pas% Ns. lO-B5o631-32P connec%or:, OF eqtmlo shall be provided on the indicator in h,b mmer snown OD fim 5. The connec.txm sblb he in accordaer,e with tabbe 1. This corneetos ablb mate with a Ssln%ilh Divisiord ptF% N0, 10-1_506Q6-=, or equal, comeetor. AB shown OR figwe 5o w seea
4、nd conneetos ahll be provided on the iadicatas to iatesconnest the indisatcz proper with the ampA.ifiere TQ cocnectos on the indicator ahall be a Scintilla- Division par% No. 10-i5630-26Po OF equal, connector which aha11 mate with a ScintiRla Division part No. lo-1?945-26S, or equal, connector to be
5、 aupplied as part of the amplifier. each electsical connector and location of the polarizing key on the connector with respect to the indicator case shall be as shown on f iguse 5 . The physical position of . Licensed by Information Handling Services-MIL-I-27173B bb m 7779706 013qbq0 7 M 3.10 COVER
6、GLISS.- The cover glass shall be flat and free from discolorations, scratches, and striae that interfere with reading of the indicator. It shall be mountsd in the flange by inserting it from within the case. Tempered glass shall be utilized . It shall be a minimum of 3/16-inch thick. 3.10.1 BNTIRSFL
7、ECTION COATINGS - A niagnesium fluoride coating in accordance with JAN-P-675 shall be applied to each surface of the cover glass and the lighting wedge. Coated surfaces shall not chip, scale, peel, flake, dissolve, discolor, or otherwise be adversely affecte by the environmental tests specified here
8、in or in normal service use. Tne coating on the outer surface of the cover glass shall withstand abrasion incident to normal service usage. 3.11 1M)ICATOR CASE.- Tne indicator case ab11 be in accordance Diniension L of r545 shall be in accordance with figure 1. shall be the length of tne envelope wh
9、en the amplifier ia physically attached to the inicritor proper and shall not exceed 8 inches, required for electrical connectors, as shown on figre 5. The pitch trim hob shall be atproximately 314 ioch in diamter and 1 inch long. Tha cmplifier unit need not be hermatically sealed but shall be seale
10、d in such a niamer that it will withstand all environmental tests specified herein. Dimension A of The case of tile indicator proper shall be hermetically sealed. 3.11.1 PILLJNG 143DIUM.- When a hermtically sealed case is used, the filling madium shall be of at least 98 percent purity, free of dust
11、particles, and contain not mme then c.006 milligram of water vapor per liter (dew point -65O C) at the filling pressure. The filling mdium sball be 100 percent helium, a mixture of 88 to 32 percent nitrogen and the remainder GellUm, or 95 percent. helium and 5 percent carbon dioxide. wclium in the c
12、ase shall be approxinnttely 1 atmosphere. Where practicable, the 100 percent helium filling medium ahall be utilized. The absolute pressure of the filling 3.11.2 RAm.- The indichtorii shall be ao sealed that the aiaximum leak rate will not permit more than 10 percent contamination of the filling nie
13、diin after 1,000 hours at a pressure differential of approxim tely 1 atmosphere . 3.12 LJGHTNG.- Internal lighting shall be designed into the indicator. lighting nrsy be either white or red lighting, depending upon the pins shown in bble I to which the power for lighting ia applied. excoptions speci
14、fiea herein, the red lighting ehali be in accordance rrith r,-259 AND DATA FOR THE PROCURXNG ACT1VTY.- When the teats are conducted at a location other than the laboratory of the procuring activity, the following shall be furnished to that activity: a. Test Report - Three copies of a test report in
15、accordance with MurT-9107a ba Test Samples - The earnplea that were tested and an untested sample . 4.4.3 QaarsPICATIN TES!fS.- The qualification tests shall consist of all teats described under TZST MWWDS. 4.5 AGCEPTILNCE TESlS.- Acceptance testa shall con8ist of 1 a. Individual tests 4.5.1 NDIvIpA
16、L =%SO- Eaeh indicator shall be eubjected to the following teeta ae described uader 4.6 TEST Wl!kODSr a. Examination of product bo Starting Ca Pitch and bank zero d. Sensitivity fo -8ollowup accuracy go Pollowup operation i. Bunting and jumping j Overshooting 29 Licensed by Information Handling Serv
17、ices=I-271938(=) 1. Pitch trim m. Zeroing adjustments n. Sealing o. Power warning indicatos p. &fly failure detection Q. nclinom ter eensitivi ty r. Inclinometer aero position 8. Inolieometer friation t. Inclinometer visibility U. Inclinome ter filling V. Response Y. Pointer balance x. Pointer flag
18、alarms 4.5.2.1 SAMPLaNG PLAU A.- Om indicatos shell be selected at random from each 100 or es produced on tm contraet OF order and eubjected to the following tests as described mules 4.6 QUT MWHODSO a. Individual teste (with the exception of early %aihue detection test) b. Power consumption d. Errgnetic property e &celeration t Licensed by Information Handling Services
