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3241.CQ10 Solution

# 3241.CQ10 Solution - MAE 3241 Aerodynamics and Flight...

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Unformatted text preview: MAE 3241: Aerodynamics and Flight Mechanics Name: 5'04 U 77024! February 16, 2905 Concept Quiz #10 I. The textbook states for a cylinder in cross~ﬂow (which is composed of the summation of uniform ﬂow with a doublet) that: “ .. all the ﬂow inside ywO (inside the circle) comes from the doublet, and all theﬂow outside ymﬂ (outside the circle) comes ﬂour umfenn ﬂow. Therefore, we can replace the ﬂow inside the circle by a solid body, and the external ﬂow will not know the difference.”(p 225 3rd Edition) Using a few sentences, expiain why it is that we can assert this? ~— 7///e’22f[ A” A Jam/my gfe'ewmenuf ﬂea/(ex AF .a? wear er” —~ wig/745 w fr W9 xfmw ”0444,2396; 77;: '7'2/(5‘ fﬁfé’hﬁzwemue‘; Wei/64’ Md’WN‘f/ “13:???“ 47-9 f”, W {10.411 Ar Lf/foffn-L/ 1;" (Whey J/ﬂeQ/cfaelﬂ .ﬂxefw'eﬂwueﬁ' {7736/61/3wﬂ3 A W.” ”F 72’ 734” 1’2“?” 53‘7"” ”’34 ”my Wade/”ﬂe/KQM gear“ fizz/ﬂag. 42?“? get J's}: we £6525?” 2%,! .zﬂ‘V/ (56753.1 (if ”/5243 Z Consider the non—liﬁing ﬂow over a circular cylinder of a given radius, where Vno is, say 10 m/s. If Vno is doubied to 20 m/s, keeping the circuiation the same, does the shape of the streamline pattern change? Brieﬂy, explain why or why not. / £51m £227.. 3’: \$9.? if"??? am e.” '20. J . 1? ﬁe ‘. " m ”3 E Va / .w... .7”? 6110‘); 'ﬁg'” “W!“lﬁ: w “W 3/)!" X," ﬁg; . Mfg/Lg: f/ ‘52}an "QSM V. ( , M: V (20 ( f” f m f , ‘ if r, W I' I“) V (153/1: :2? ﬁve? (*9/36: 2190f?! “ ' I “W ’ 1’ ' " 7‘ " ”625 J" Gm/ )K/{m' f //e..7—0 9/9/33 7 3AM] ”my 95"!" . ///rge{/5C/mﬂ/7cﬁrf Z29???- t/é’fdd: / «’5 n (if Efﬁe I a r e / L (f ' w; , r“ ”ﬁxer? a!” .449 ,rm g»? eﬁ‘g’re’f‘. 513.1,) Maj: ,e’ 0/ 772’!" ﬂelrddfﬂm‘fh/ V AS” ‘ / V / _ {"061 -- (Afﬁrm? IJI'egﬁtzjiw-n 4:7,“??- pﬁ. w- .4! ,n 1mg. 'f é”- ”I“? ﬁ’gf‘ ”I (r, y”; “I“ v /' «47:21:! Vﬁ6r/é 0,4” 1 m I’M/“fey (5)926: ////&//1KK [”0” f ' d 71.7%” {m‘egeme/zvee‘ ewe-WW , \ 4" 6K? fit? 6:; ...
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