1202 Midterm 2007 - MAE 1202 Aerospace Practicum Name...

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MAE 1202: Aerospace Practicum Name: _______________________ February 26, 2007 Mid-Term Exam Part 1 Short Answer Questions (8 points each): Answer these questions using as few words as possible or using equations whenever you feel appropriate. For quantitative questions, show as much work as possible and define any symbols that you use (if they deviate from the usual). 1. How would you describe the conditions and applicability associated with the airfoil data in Appendix D? 2. A NACA 1412 airfoil section has a chord length of 80 cm. The wing is at an angle of attack of 6° in an airflow with a velocity of 50 m/s at standard sea-level conditions. What is the thickness of this airfoil, and what are the lift and moment about the quarter chord per unit span? 3. How and why is the stall speed of a Boeing 747 altered through the deployment of the flaps on landing? Why retract the flaps during flight? 1
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4. A new un-manned high-speed reconnaissance aircraft, shaped completely like a delta wing is to be developed. The aircraft will have a top speed of Mach 4. Provide a
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