*翼型 [#q60c8d08]
>[[翼]]断面の形。~
[[型紙]]を厚紙に貼って切り抜き、[[発泡スチロール]]に貼って[[熱線]]で切り抜くと[[リブ]]の出来上がり。~

>[[NACA]]の4字系翼形を説明すると、~
第1桁:最大キャンバ(翼弦長の1/100単位)~
第2桁:最大キャンバ位置(翼弦長の1/10単位)~
第3,4桁:最大翼厚(翼弦長の1/100単位)~
NACA3412で説明すると、翼弦長の40%の位置に翼弦長の3%のキャンバをもつ中心線を描き、翼弦長の12%の最大翼厚をもつ。~
[t=最大翼厚]とすると翼厚Ytは次式で表せられる。~
#ref(tex.gif,nolink,\pm Yt=\frac{t}{0.2}(0.2969x^\frac{1}{2}-0.126x-0.3516x^2+0.2843x^3-0.1015x^4))~
翼厚は中心線からの距離になる。~
また、尾翼に使われているNACA0010など最初の2桁が0のものは対称翼になる。~

>新入生が一番最初にやるのがこれを作る[[作業]]。
-読み:よくがた

**例文 [#yd555b70]
 翼型は何を使ってますか?
>2004年度は主翼にNACA4412、尾翼にNACA0009,0012を使ってます。

**編集者 [#a73f86eb]
-msz-006
-GOTO☆PO
-Ω^(-1)RI
-これちか

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