NASA NACA-ARR-L5F06-1945 Wind-tunnel investigation of control-surface characteristics XXII - medium and large aerodynamic balances of two nose shapes and a plain overhang used withrfoi.pdf

1、( L, - ,.NATIONAL ADVISORY COMMITTEE FOR AERO”WIJTICS%g!%z-=IW1lmml Rllpoli1”ORIGINALLY ISSUEDJune 1945asAd,v+ce Restricted Report L51N)6“WIND-TUNNEL INVIHTIGATIONOF CONIROL,-STJRFACECHARACTERISTICS -XXII - MEDIUM AND URGE AERODYNAMICBAIANCES OF TWO NOSE SHAPESANDA PL41N O-G USED WITH A 0.20-AIRIR)I

2、L-CHf)RDFLAPON AN NACA OQ $)AIRIX)IL9By John M. Riebe and+izabeth G. McKirmejdv EL3vQNACA WARTIME REPORTS arereprintsofpap . ,:.;.-,. . . . . .:.,. .,., ., :“. .,.-.,. .,; ,., .WlYD-T?ti3L:”, . . ,A p. 20-A1?O1.-ORD fiP. . .: . ., ,.,. ,., ON “e ,. ., .,. .“., .;*,” . -, .1,1 . . . .:,. ., .SUWUy .

3、, . “,. .:., . . ,.,. . .:. ” 1,.”. E!lunt-rmseand ellitical-rlose overkns of 0.35and O.50 flap chord and ; plain overhang on a flaphaving a chord of 0.20 aifoil chord have been tested 1in two-dti,ensionalflew on an NACA 0009 airfoil. Theresults of the tests are presented as aerodynamic :sectionchar

4、acteristics for se-eralflap deflections.with thegap.:at”the flap nose :sealed or.Wmsealetl.“. “Tests were made also .to determine tllbeffectveriessof a tab of 0.20.flap ,chordon thq plain seaIed flap the.piain sealed flap . , : . . . . . . . .Th the aerodynamiccenter for the balanced flap with seale

5、d gap, regardlessof balance chord or nose shape,wasnear.the 0.24c point.The effect of unsealing the gap was to move the aerodynamic”center O.OIC foryard.The center-of-lift positionsdue to.flap deflectionsup to approximately 15 are giveu in the following table:,. . . .,.,.Provided by IHSNot for Resal

6、eNo reproduction or networking permitted without license from IHS-,-,-f .-.,. ., ,.,.,.10 -. ., .NACA AQ05C 46 .44. 47 43 50This table indicates that the center-of-lift ”positionwas the same for.the plain flap whether the gap wassealed or unsealed. The effect of unsealing the gap or .of increasing t

7、he balance chord was to move the center-of-lift position due to flap deflection forward on theblunt-nose and rearward on the elliptical-nose flap.The center-of-lift position caused b flap deflection is .a function of the aspect ratio (reference 5 and 6) andmoves rearward as the aspect ratio decrease

8、s.and areusually indep stationsand ordinates measured in”percent airfoil chord“0.35cf overhang 0.50cf overhangvStation Ordinate Station Ordinateo 0 0 0a71 03 .21 a71 03 .21.12 .42 ,15 .42.18 .62 .36 .62a715O .83 .65 .83.81 1004 1005 1.041.22 1.25 1.58 1.251.75 , 1.46 2.25 1.46 2.48. , 1.67 3.17 1.67

9、2.85 1.75 3.63 1.753.30 1.83 4.18 1.83 “3.90 . 1.92 4.87 1.924.92 2.00 5.86 2 a71 005.67 2.02 6.70 2.046.42 - “ 2.00 “ 7.67 .2.06 .7.00 1.97 8.64 2.04-9.48 2.0010.00 1.97 -.NATIONAL ADVISORY8COMMITTEE FOR AERONAUTICS .-.,.!.Provided by IHSNot for ResaleNo reproduction or networking permitted without

10、 license from IHS-,-,-_-. . - - -. 7fo/Y wit.au 0.20 e p/uIh #7.:, j gff, OOEC ; fob,020cf ; fob “gQ/O,a/C; H-L8+ =OO. - .NATIOW AOVISORYCoHmTEE m mmAIJrlu, .“f.- ,Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-,/. .,a71a13a13a100,*,k-,.I, .,NACA AR

11、R Noo L5F06 Fig. 2 Cone,., . , ,.-0-.(W-.08- .ImMnn-rEEmaURwMITlcs. .,./ .,-. .,., .,_- ., ., ,. . , t. , ,”, ., .W, * .=.-.; ,; ,., . - -:.-.:. , .; .y.-, I.I,-.L-4 /2., /0 -/.?.-a. . . .,-.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-., .,.II.,!

12、Ii1:.,1.iI,):.,.11I,-,.,!l ., -.,.-,.,.,.NACA”ARR No. L5F06 “ :_Fig. 3 Conco. .)0.-2o-.04-./2- :/6-.24-.28-.32.36-.40- .+.- .+8-.52 I-20 46” -/2 18 -4 0. 4 8- / /6.,.,)1I.,1:“,1,Angle-of oz%d,aO, -i,I,.,/.-.-.36fig.u,. a- “Y r I l 1 I I*eg). oA5I l-d !-L.L!.- 1 I I I I iL 1 I 1 1 I I I 1 I I I20 -6

13、-12 -8 -*o P8/ /6.”Angle of uiiach, a. , +eg “,-e 4.- Cohclffaed. “ . ,.I- !,I.,. ., ,.,._. . /., NATIONAL ADVISORY -fm)uTm FaMRmumCs .,- .,. -”Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I,. .:,., ,:.t, . . ,!., .- t. . . .“&.-.I . ,.NACA ARR No

14、. L5F06 “Fig.5,. ./4./210& “. .,. .-20 -/6 -/2 -8 -4 0. 4- 8“ 1? /5Anj./e of &qck, EO, deg,.i.IIII%a71a11a15a15.,Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. -! /. .NACA ARR No.L5FO6 Fig. 5 Cone.,-t . .-.-/c$f6Yeg) -1 I -l-i. I In(Ucdy“oA 5“a71U

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16、(Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1= ,.II1. -,- ., . ., I. .-. “,. . .-NACAARRNO. L5F06 ,. - Fig. 6-. ,(, 1.,.,1.-,!. .,- ,-Lo-/2 20 -/6 -/2 -8 -4 0 48 /Z /6.hg/e of a7%0cAjmO, deg,. -,., NiTIONN ADVISORY. ,., amM-rlm m AmoMml=.-.I.,.

17、.,. .-sII1,.$. .Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-,.,. .:.J,.,. .NACA ARR N/.:36-40,.-,.8.0. L6F06 , . , Fig. 6 COP.C.,I I, # 1 1 ! 1 I I1 1 -+. 1 I 1 I I I.ql I 1.I 1.1 I l I I I!I I I 2J I I I !-20 -/6.-/2 -8 -4 0 .4 8 “/2” ,Angle of o#mk, CUO,deg . .6 .- Conciuded.?/, I. ,-NATIOtiAL ADVISORY -/,Cmm-m Fw KmwTJCS .,/ . .-,. .Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-