f03_mud_0304

f03_mud_0304 - Lecture F03 Mud: Thin-Airfoil Analysis...

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Unformatted text preview: Lecture F03 Mud: Thin-Airfoil Analysis Problem (continued) 1. Tough to visualize the coordinate? (1 student) Its similar to the physical x coordinate, except that the coordinate is more bunched up at the leading edge and trailing edge. Imagine sliding along the half-circle (3rd figure in F2 notes) at a uniform speed in . Your horizontal velocity in x will be very slow near the leading edge, normal in the middle, and then slow again near the trailing edge. 2. Whats the origin that is measured from? The quarter-chord? (1 student) No, from the leading edge. As x runs from to c along the chord, runs from to . See the 3rd figure in F2 notes. 3. What exactly is the Fourier series representing? (1 student) The function f ( ) dZ/dx . This is the angle between the freestream direction and the camberline surface. 4. What does c m,c/ 4 = lift forces dL 4 ( A 2 A 1 ) c/ 4 x physically mean? (1 student) The moment about the quarter-chord point can be written...
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f03_mud_0304 - Lecture F03 Mud: Thin-Airfoil Analysis...

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