Exam_1_2004

# Exam_1_2004 - EAS 4101 Aerodynamics Spring 2004 Exam#1 Name...

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EAS 4101 - Aerodynamics – Spring 2004 3/3/04, Exam #1 Name: _____________ __________ 1/13 Questions:(45 points total, 3 points each, unless otherwise marked) 1. What is the definition of the center of pressure for an airfoil? 2. What is the definition of the aerodynamic center for an airfoil? 3. What is the velocity boundary condition for a solid surface for an inviscid-flow problem? 4. State the 3 methods (and their respective assumptions) discussed in class of deriving Bernoulli’s equation (6 points) .

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EAS 4101 - Aerodynamics – Spring 2004 3/3/04, Exam #1 Name: _____________ __________ 2/13 Questions continued: (45 points total, 3 points each, unless otherwise marked) 5. For inviscid flow around a bend, does the pressure increase, decrease, or remain the same in the outward direction from the bend (or radius of curvature is increasing)? 6. What are the conditions under which both the streamfunction and the velocity potential identically satisfy Laplace’s equation for a spherical coordinate system ? 7. In ideal flow, it is common to employ superposition solutions of various individual solutions to Laplace’s equation in terms of the streamfunction and/or velocity potential. Is it also valid to superimpose pressure fields of each individual solution? Please justify your answer mathematically and/or physically. 8. List and explain the origins of the two types of drag acting on a 2-D bluff body
EAS 4101 - Aerodynamics – Spring 2004 3/3/04, Exam #1 Name: _____________ __________ 3/13 Questions continued: (45 points total, 3 points each, unless otherwise marked) 9.

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Exam_1_2004 - EAS 4101 Aerodynamics Spring 2004 Exam#1 Name...

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