NASA Technical Paper 2256 - CAFE Foundation

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4 HEIGHT ABOVE SURFACE, Z, in. .7- .6- .5-- .4 - .3-- .2 - .1- ORIGINAL pAGE IS OF pOOR QUALrrV O INSIDE SLIPSTREAM [] OUTSIDESLIPSTREAM SOLID SYMBOLS: FIXEDTRANSITION, (x/c) t = 5 percent _l t I I 0 .4 .5 .6 .7 .8 .9 1.0 BOUNDARY-LAYER-PROFI LE, u/u e Fiqure 39.- Effect of propeller slipstream on Bellanca SkMrocket II boundary-layer profiles, s/c = 28.7 percent; n = 1806 rpm;V = 178 knots. 'li _, 135 ( ®
i.- _ l! I' h . MINIGLOVE NLF GLOVE I I I. TRANSITION {measuredby sublimating chemicals) 136 ORIGINAl,.P_';k_ _ OF POOR Ou_LnY HOT-FILM SIGNALS BLADE-[.......... ] PASSING J FREQUENCY LAMINAR- X TURBULENT -% I ,,I I,,, I I I .I . I .I 0 .1 .2 .3 .4 .5 .6 .7 .8 TIME, sec Fiqure 40.- In-flight, hot-film measured, time-dependent effeots of propeller slipstream on laminar boundary layer (T-34C airplane). R = 1.5 X 10 6 ft-1; n = 150 rpm. ®
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3 I" NASA Technical Paper 225.6 Jun
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m_ Use of trademarks or names of ma
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'*l ,_5 7,,4+-. + + +_''_m'_T _+_
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This report presents the results of
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i Rc R 0 r S s T t/c U.s. V V c V i
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_i._J •J k_ Reynolds number_, Mat
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I installation of an outboard leadi
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ii, p,. _2 ,'ZI Reynolds numberof-1
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L r ...... _ 11 , Airplane level-fl
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I',/ L figures 20 to 23. The reduct
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i 7: region of the airfoil. Further
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k! k K , " _Rmlmlllll_lNiiillnp v 9
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k.L" F i' N apparent small velocity
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_T"_T _ 7] I _ - _'_' T occurred on
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shape as an indication of transitio
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level. Analysis shows that at a mor
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i< 1 11 APPENDIX SURFACE WAVINESS O
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3O Airplane VariEze in flight Long-
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Relative gauge- reading, in. 8O 80
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k' F' &. _', b ,_ .-wT 7- Relative
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i ;:7" --..i iI m :, r, •_ $ 36 A
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38 BO x 10-.3 70 BO 5O 4O 3O 2O I0
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70 x 10-3 B0 l l 50 I. 4o \;,_.=.\
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42 Relative gauge 6O 50 reading, in
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6O 50 40 30 20 iO 0 B0 50 40 Relati
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L!I L C 46 70 BO 50 4O 30 20 iO 0 R
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_I 48 REFERENCES I. Loftin, Laurenc
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_i _ 30. Braslow, Albert L.; and Kn
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[ 52 m v ._ :_ ._ v o = "_" II x °
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i" 54 e3 ! URIGINAL PAt_E Ig OF POO
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2, r"-" r. .! . 7L I g _ , _. ,,9®
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58 OI_IGINAL PAGE-Ig _F POOR QUALrT
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i 60 _IOINJU,, pAOli Ill _I p_OR OU
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62 TABLE 5.- PHYSICAL CIIARACTERIST
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64 (x/e)u 0 0000O 00000 00196 00644
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!+ • + _;+ TABLE 7.- +PHYSICAL CH
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Z :c 68 (x/c)i_ 000000 00288 00575
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TABLE 10.- PHYSICAL CHARACTERISTICS
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;_ i_ "_. 72 TABLE12.- PHYSICALCHAR
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_r i ..............................
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I 76 >- ,----7"I __ -_---qnlmwmnm_-
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; , L i L_ _, k "/B // I _JRIGINALP
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°?. ORIGINAl.. PAGE IB OF pOOR OUA
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ORIGINAL PAGE 18 OF POOR QUALITY ®
Page 89 and 90: i _NAt, I'VE IS OF POOROUAUTY
Page 91 and 92: il_ _. 86 ! ORIGINAL PAGE Ig OF =PO
Page 93 and 94: If 'i " F t: i k"!.. ORIGINAL PAaE
Page 95 and 96: 9O ORI_NAL PAGE Ig OF POOR OI,JAL.I
Page 97 and 98: 92 (x/c) t = 55 percent Z ORIGINAL
Page 99 and 100: _4 . OR/a/_,_ PAQE 18 OF POOR quALr
Page 101 and 102: 96 i ] i i!......J J ! i i ( I i I
Page 103 and 104: 98 _ z_ tt // /V (_ _, ORI_K/D,L, p
Page 105 and 106: loo 0 oi.._ L F-. 0 II ÷ 0 ORIGINA
Page 107 and 108: ii, _..:j ._t _ ....... 102 ORIGINA
Page 109 and 110: 7, I!/ , T & / .J l i CL 1.2 1.0 0.
Page 111 and 112: i ORIGINAL PAGE |_] OF POOR QUALITY
Page 113 and 114: ORIGINAL PAGE IR OF POOR OUALITY I
Page 115 and 116: ORIQINAL PAGF..i_ OF POOR QUALITY 3
Page 117 and 118: 112 0 e.o ORIGINAL PAGE IS OF POOR
Page 119 and 120: i., L-.. _A / 114 ORIGINAL PA(.._._
Page 121 and 122: 116 .p 0 × o II \ II co H ¢) °¢
Page 123 and 124: _i-_ , ORIGI/NAL PAGE _9 OF POOR QU
Page 125 and 126: _20 i_' POOR QUALI'_( o_ ¢N I O 0
Page 127 and 128: 122 OP POORQuALrry I ¢; _k _J o_ o
Page 129 and 130: i _. / ,p. _'- CO ¢t_ 4J ORIGINAL
Page 131 and 132: 126 ORI_NAL PAGF. I_ OF POOR QUALIT
Page 133 and 134: L'_::; : • 128 ORi_NAI.,PAGEIB OF
Page 135 and 136: 130 _e8 , • , ".4 Cp 0 .4 .8 z/c
Page 137 and 138: SECTION DRAG COEFFIClENT, 132 Cd .0
Page 139: I ,,, z/c 134 .O6 .05 .04 .03 .02 .
Page 143 and 144: __ F_ Experimental transition ,| OR
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NASA Technical Paper 2256 - CAFE Foundation

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