1、MIL-T-5420B 66 7779706 OL2L1770 2 YJL, “AlY STECIFICAITOK W3ES , . PIYOT STATIC , EIL?X?TLICALTX EA%D, AEGXAFT %clic speclficatior, is mazt2atory for use by all Depertrriezts 23C Agezcies of the Deprtzierit of 1:. . Defezse. 1. SC?S 1.i pitot static tubes identified as foliows: . Triis specification
2、 covers two types of two-wire electricXZXT.S 2.1 for bids or request Tor proposai, for5 a pari of the specificaclon to the extent specified herein. “he following docments, of the isst;e ir, effeci or: aate of Invitation Specificatlons Federa PPP-3-60; Boxes, Wood, Cleated-Plywood PP?-E436 Ebx, Fiber
3、board . yliitorTsr XIL-P-116 Preservation, Methods of EIL-D-iCQO MIM-774.2 MIL-A-8625 Drawing, Engineering and Associate6 List Screw Threads, Standard, Optimum Selectea Series, General Specification for Anodic Coatings, for Aluminum and A1umim.m Alloys FSC 6610 Provided by IHSNot for ResaleNo reprod
4、uction or networking permitted without license from IHS-,-,-MIL-T-SY20B 66 7777906 012Y77L Y W Metal, Test Methods EZJ-Srn-I Lock.-Sprir,g, Helical, Regular (Nediun) Series U5816 Receptacle-Airspeed TubeEectricl Tube, Pitot Static, L shape, Electrically Seated . lbbe, Pitot Static, Straight, Eiectri
5、cally Heated (Copies of specifications, standars, drawings , and publications required by suppliers in corinectio? w5tn spcific procurenier,t. f-mctions should be. obtained fron; the procurir,g activity or as directed by the contracting offi- cer.) *3.1 First aTticie. This specification makes provis
6、ion for first article inspection. 3.2 Selection of specifications and standards, Specifications and standards for necessary conirnodities and services not specified herein shalx be selected in accordance with MIL-STD-143. 3.3 Materials. Katerials which are not specifically designate shall be of the
7、best commercial quality, of the Lightest practicable weight, and suitable for the purpose intended. not be used where it is practicable to avoid them. rruetlcaly sealed, they shtil be, treate with a fungicidal agent acceptable to the procuring activity. *3 J.1 Funms-Proof materials, Materials which
8、are nutrients for fungi shall Where used and not her- 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-5420B bb = 77777Ob 0324772 b . 3.3.3 Xetals. Ketak s:?hli Se of the cwrosfon-,-esistnt zype or suitabit. treate t9 :-esist cornosioz cue to
9、fiiels, saLt sp-ay, or a“a,ospheric candi- tiocs likely to be ZEC i: storage or ZOTICL service. 3.4. Decl= zi casictin. The oesign of the tube snail cor,forr: to storage, installatior, aS.service without fallure. 3.A.1 Draixaze. Tie-t.i;De shall be so aesigned that wheE rice o?i the tube. i8 melte8
10、uxier flight conaitions, the wter resultizg therefro% shall cirain fro= the cube ar.d net be.zonchcte2 into the hpact presswe and static pressure lir.es iche,-e-ic my freeze, A crair; shti1.l iso be prov5eG for Lhe removil o: wat-er fm the mour,ting strilt. or AX58 as specifies. Tie ti;Ses shall be
11、so constm.ctec thL no pzrts xxLL -, . 3.4.2 Zlect-ical chxf:. %e electrical circuit of the tubes shl be of the two-wfre qpe an skai be provised wick a sna? tme recer-lacle coz- f. Die neatkg elezezt plced ir, ilje cose of- the exceec 15 ainperes for type I mbes or 2 mperes tube shall have Fewer racL
12、yg of 1b5 watLs at rated voltage with -the atmosphere surro-czcizg t3e %De at n zT3ient temperature of 25O2 Heatding elemer,t currext shaX. for.type II tubes under any operating condition specified herein. 3.4.3 Pitot. ar?d static comectiocs. Pitot and static connections shall be as shown on AX5814
13、or AK5816. 3.5 Performasce. The tubes shall- satisfy the performance requirements. of the tests specified in section 4. 3.6 Part zixPe=.l-z of -r+ l,.,erckaczeaSie pzrts. All parts having the sane . manufacturers pert mnber snail be functionaliy and dimensionally inter- changeable. 1000 shall govern
14、 the mar,ufacturerts part numbers and changes thereto. The item iectification and part. number requirements of NIL-D- *3.7 hreiqht. The weight of the complete tube, without the AN3115 electrical assmLbly and moiinting screws, shall not exceed 1.0 pound. 3.8 Fir,ish. Protective coatings anci finishes
15、 which will crack, chip, or scale during normal service life or due to extremes of atmospheric conditions shall nat be used. “he outside of the tube shall have a durable dull finish acceptable to the procurinp, activity. Aluminum alloy parts shall be covered 3 I Provided by IHSNot for ResaleNo repro
16、duction or networking permitted without license from IHS-,-,-MIL-T-5LI20B 66 7777706 012LI773 B W 3-.9 S.crew chreads. or larger shall cmfom to KS-771;2. 3 .lG 1dextiflczY.lon of :rod-!ct. eEgraved, or sxxped oz each cube in a location that will kot interfere with proper operatior, of the tcbe. “he
17、threads o? XL machine screis 0.06G ir,ch diameter The following infomatior; shall be etched, Nme of %be (as shom n the AX star,dard) . Ratez Voltage AX ?Gt. ita Msnilfac.=;irers Part Eo Contrsct or rcie:. KO MAnufacturerrs Rne or Feerai Identification Code U S Property 3.iO. Other markirxs. letters
18、P anc S, respecclvely, stmped, ezched, or eqrzvec 03 tkie lines as shom or; AX5814 or AX5816. Tne pressiire anci static lkes sk;till be color marked in ccorcar.ce wich KILSTD-12G7. stampee, etciea, or er,graved h-ltii the wor2 ltTO?ll, in letters i/8 ixh high, forward of the moiinting shoulder. Pito
19、t and static lines shall be identifie by the Tlie top of AN5816 tubes skali be 3.11 Protective ca9s. pitot an6 static lixes shai De protectec by slip-on caps. all protective devices shail De silbject to tine approvgl of the procurizg activity. Tne total pressure 0penir.g an6 the threads of thi Tie c
20、iesigr, of - . 3.12.1 3sthilatioz ixcitims. Unless otherwise specified, the coztrac- tor shall fmrdsh (with each taSe) one printe copy of imtructions for , installation of the tube. to the procuring activity for approv. Trior to printing, two copies shall be furnishee 3.12.2 Mounting Screws. Fop MS3
21、5207-226 screws and four XS35338-41 lock- washers shall be furnished with each AN5816 tube. and four MS35338-43 lockwashers shall be furnished with each AM58i4 tube. Four MS35207-259 screws 3.12.3 g. -.i.nt.ing? .ri.vet,irg, machine-screw sseztulies , sd f:*eed,ix 3f prts frorr: bdrys and sharp edge
22、s. ;. . QUALITY ASSEXXZE PXWISI9XS L.1 EerasLblllty far 5.EmectLGr,. Unless otherwise sjecifiea in the con- of 22. kspectlx reqilire7ents as specified herein. qecified ir-, %lie. cockact-or orde?, the supplier say use his OK- or azy otker facilities siitabie for Cie. ierfomar,ce .of the inspection r
23、eqLiirc%er,Vs specified herelr. -xiless clsa2groved Oy the govepmezt. Qne $over:-izer,t reserves the rigkt to perTom. ny of the Inspctions set forth ir, tile specl- ficatlor, where such insrecYor,s re cieemed necessary to assure subjlies arid services conforr-, to prescribec requirenents. 4.2 Cisss5
24、fics:,.lcz cr“ Lxect.ior:s. Tne inspectior, requiremeEts specified herein are classifieC as foows : %* :.i5e shall be coustrilcted ad Sinishe9 iri E ., cxa:fxe riare. Particular attention shl be given LO neat- . L v,rvz or pLrckase WG, the silpdier is responsible for t3e perfo,xiticce Exzept s ocher
25、wise First article tests shall consist of all the 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-5920B 66 7997906 0324775 3 ,G=;h; :e;ts. tests as describet moer h.6: Each tube shall be siibjecte to the foiowiig (b) Lekage (c) Dielectric str
26、ei.gtk (ci) Electricci circilit h.5.2 Sei tesCs (b) Vibratioz (c) Power cozsxption (ci) Exhiraxce (e) iieat concii;ctivity (:) Nag,e;ic effect lt.j.2.1 Re,%:t-Lc-r. erz retest. rm fails to meet the c?ecification, ?io iterrs siil or; hand or later prodcced shall be accepeci ur.til the exter,t azd caw
27、e of faiLbre hve been deter. 4.5.3 Defects ir, item alreacig scceDteC The investigatior, of a test failwe could indicate that defects may exist in items already accepted. sc, the contractor shall fully advise the procuring activity of all defects likely to be found an the method of correcting them.
28、If 4.5 Test, methods. 4.6.1 Examinstior. of product. compliance with the requirements specified herein with respect to material, worlanaxship, markings, and .zPrisions. The tube shall be inspected to determine 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license fro
29、m IHS-,-,-4.6.6 ?awe? cons:rrztioz. %e tube shli be supporteC vexically, Werse. to within i/be s:rizii e tested ir, boY 3 Liter an 5 liter vomes of himr. ine reqcired voluine of tap waLer (at or nem raox texiperatGre) sk1i be placer in glass beaker. fi; hezced portio2 of th;2 tube chli be supportes
30、vertically i the wter io a e?tk o 1 1/2 izches for the 3 liter volme cd I/.!+ hch unser the rrioxtiq swiace for the 5 liter vouiie. age shall the?. be aFplie2 to the t;De for a perioa of i5 zkxtes. OOF) . temperature. A.6.9 !me?.: effxi;. n%rg.etic est-wect lixe and five inches from the center of 5.
31、 short bzr magnei.ic cornss. 0.19 oerstea. tube, then shall be repeatea Wtth the %cbe-opeFatlr.g at a ratec voltage. The eflectior of the compass shall not exceed five egrees. rr* The ternpereec-ced an2 rLec vot- “ke wter .temrature shall agaic 5e measured and sn riot Less thr: 5OC Ele wter shall be
32、 genty stirreci 6wing the test to tissilre miforz . The tcbe chal:. be held ir, varfou positions or, a T;r:e hwizoritai n;agr,etic fielci izter-slty shall be O.7 to Tr,e test shall De mce Timt with xo voltage applied to tke To1 er anc e Inches 03 Water 0.05 4.6.10 4.6.10.1 tunnel ana tested fer DotI
33、l total end cttic presssres at the lrs?eeci speci- fied ir. Table I. obtined uncer shilar cczditior;c .with a pitot sttic tcbe 05 ki-o.l.n accwacy and calibraticz. excees two hot.s-sr.d the static pressare exors chail De wltkin the toler- ances specifieci in Table I. Airsoeed -az6 stasic pressfire e
34、rror. Error kt zero axle or“ attack. The tube skall be n;oiirted Ir, a wind Errors ckall be deteminec! by cor;,prisoc witk the resclts The erxr of the ixoe ir, iridicaiec airspees s!%2 not , . 4.6.10.2 %-rays at var_,-irs 2zlc-s of a-;sa-c-k. varied. k 20 iritervls shall not dlffer frox the el-ror a
35、t zero agie of attack by Kore than .two knots, and the error In sttic pressure shall not differ fror, the static pressure error at zero angle of attack by more than 0.15,inch of water. The zrigie Gz -e:tack skai be t;. shall je expose5 to.slc S?YEY ir- zzcordmce witr, FED-Sl3-2j1 for period 02 50 ho
36、ux. KO excessive corrosloz or ci,.age to ar.y prt of the tabe shai rescit. . Te b3e c:?z.11 theri be scDjecte6 to the tests s.eciified.Ir. k.5.1. The tine require6 %G clear the ice cap si1zL1 no; exceec two ainites. 4.6.13 Cold res:s%ar?e. -65O.C (-85OF) Tor 46 I.,ours. specifie6 in k.5.1. The tube
37、chal1 be su5jected LO teri.perat,we or* m ne txbe shall. the= be subjeczea Co the tests Xo evlder,ce of d to eternice codommce witk the requiremer.ts of Section 5. *5.2.1 Levei A. Tubes packaged as specifiec Ir, 5.1.1 shall be packe ir, shipping containers confomizg to PPP-B-636, weather resistazt c
38、lass. When specified (see 6,2), tubes chail be packed in containers confoming to PPP- B-601, overseas tne. Imofar as practicable, exterior continers shll be _ L-AAuA.s. sl?ape ar.d size n of micimum cube and tare consiste% witkthe rnrc:.ior. requireci. -3 r:.9?- . ., - - -.,Z Level z. Tubes psckaged
39、 as specified in 5.1.1 shall be pcked ir, 5xzes:iz cass exterhr coztainers conforring to PPP-B-636. rnerts as specifiec in 5.2.1 shall apply. Other require- Sj.2.7 Level ?. Packing which affords adequate protection against damage 9 - - . . 2 . Provided by IHSNot for ResaleNo reproduction or networki
40、ng permitted without license from IHS-,-,-MIL-T-5q20B 66 = 9999706 0324777 7 . during direct aomescic shlpent from t$e supyly source to the first receivlng. adtivity for irmeaiate use. rilles and reGltions and may be tne sappliers conmercial practice, provided the latter meets the requirements of th
41、is level. WS level sha confom to applicable carrier Y =.3 - Nrkina of sl,isEer:ts. interior packages and exterior skiprlng contain- ex shall be xtarked ir! accordame with NIL-STD-iZ9. 6. NOES 6.1 Irtensea me. Pitot static tiibes covere6 by tFis speclficatioc are. . dnt.ended for -xe.iri aircreft in
42、cozjunction with sirspec inaic5ztors for temperatures as low as -65C (-85OF). of static pressure for altketers nd climb inGicators: Tne ti?o iieilty whatsoever. for any inaccuracies in these notations. Biers anc contractors are cautlone to evaluate the req-cirer.eEts of this docment Dase oz the er.t
43、ire coritent irrespective of the rr,arglnai nota-cions aria relationskd-p to the last previous issue. mis was Cone as Custodiam : . Navy - AS. Air Force - 71 *4Ty - AV Reviewers : Army - AV Kavy - AS - . . 10 -. . PrepariRg Activity:. Air Force - 71 . - Project Kumber : . 6610-03jO O (i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
