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f04_mud_0304

f04_mud_0304 - Lecture F04 Mud 1 Why does x/c =(1 cos/2(1...

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Lecture F04 Mud: 1. Why does x/c = (1 cos ξ ) / 2 ? (1 student) By definition. That how ξ was defined. 2. Can you just substitute ξ o for ξ ? (1 student) It’s important to make the distinction between what a variable is, and what you call it. We have been working with two different types of variables, shown in the 3rd figure in the F02 notes: 1) physical distance along the chord, called x or 2) angle coordinate on the half-circle above the chord, called ξ or ξ o In the F04 stuff it really didn’t matter which name we use. Earlier on, we had to use two different names for each variable type, since we were simultaneously dealing with two different points ( x and , or ξ o and ξ ). 3. How can you use TAT for a cambered airfoil? (1 student) TAT applies to cambered airfoils, as in the example in class. 4. Where is the vortex sheet on the airfoil?? (1 student) All the vorticity on a real airfoil resides in the thin top and bottom boundary layers.

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f04_mud_0304 - Lecture F04 Mud 1 Why does x/c =(1 cos/2(1...

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