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Aerodynamics CPU Objectives Activity 1 1-1. Define hydrodynamics. 1-2. Define aerodynamics and identify how long it’s been studied. 1-3. Recognize a unique difference between the properties of air and water. 1-4. Identify the affects wind can have on sand dunes. 1-5. Name the molecules that make up air. 1-6. Describe what causes wind. 1-7. Examine the career of air traffic controllers. 1-8. Compare and contrast the beneficial and detrimental effects of wind. Activity 2 2-1. Define and identify the characteristics of pressure waves. 2-2. Define and identify the characteristics of viscosity. 2-3. Indicate how the boundary layer will react when an object's path of airflow is smooth. 2-4. Recognize the impact form drag has on an object. 2-5. Using the Applied Technologies AeroDyne Wind Tunnel, record drag (in grams) of various shapes, then sketch the path the yarn takes over and under each shape. 2-6. Analyze the results of your wind tunnel experiment and explain any differences in your expectations. Activity 3 3-1. Define aerodynamic terms and identify principles as they relate to automobile design. 3-2. Construct and test various vehicle shapes in the Applied Technologies AeroDyne Wind Tunnel, record drag, then sketch the path the yarn takes over and under each shape. 3-3. Examine the career of auto body repairers. 3-4. Write about the advantages of a vehicle that is more aerodynamically designed than one that isn’t and explain why you think that. Activity 4 4-1. Recognize that air reacts at different speeds. 4-2. Explore the characteristics of mach speed and identify how frequently pilots fly that fast. 4-3. Identify what happened to Richard Kline’s paper airplane when thrown at a very steep angle. 4-4. Examine the career of aircraft technicians. 4-5. Describe how an airplane takes off. Activity 5 5-1. Explain the forces that a plane must overcome in order for it to become airborne. 5-2. Define Bernoulli’s Principle and Newton’s Third Law. 5-3. Identify the forces that act on an airplane in flight. 5-4. Recognize how an airfoil functions. 5-5. Identify a natural airfoil. 5-6. Test three airfoils in the wind tunnel, using various wind speeds and angles of attack, and record those findings on a worksheet. 5-7. Analyze a way in which the airfoil can be applied to water transportation, keeping in mind the ways in which water and air are similar. Activity 6 6-1. Identify the functional characteristics of the Kline-Fogleman airfoil. 6-2. Select reasons why the Kline-Fogleman airfoil has been so ignored by the mainstream aircraft industry. 6-3. Construct two paper airplanes and test them when instructed. 6-4. Examine the career of aerospace engineers. 6-5. Analyze the results of the paper airplanes you built and describe any modifications you made and its affect on flight. Activity 7 7-1. Design at least three original airfoil profiles, then select one to make. 7-2. Trace and cut out seven “ribs” of the selected airfoil shape that include cross member and backbone reliefs. 7-3. Cut the necessary number of cross members and the backbone from balsa wood, following specified dimensions. 7-4. Bag, label, and store the parts so they can easily be identified and accessed for the next activity. 7-5. Discuss the design of your airfoil and explain what is it about those design elements that make you think the airfoil will provide minimal drag and maximum lift. Activity 8 8-1. Complete construction of your original airfoil, including sealing the skeleton with Monokote plastic and attaching the test mount bracket. 8-2. Run tests on the airfoil in the wind tunnel and record drag and lift. Activity 9 9-1. Examine the various uses and kinds of wind turbines and why they’re used. 9-2. Construct a wind turbine blade and test the amount of power it generates at various speeds in the wind tunnel. 9-3. Discuss the importance (or not) of using alternative power sources like the wind. Activity 10 through Activity 15 require students students to complete challenges to meet numerous high level problem-solving objectives. The objectives for the challenges in this CPU include: Challenge 1 You will conduct research on a career of your choice in the aerodynamics field. Share your findings in a presentation. Challenge 2 Based on your study of aerodynamics, you will modify your airfoil to achieve a greater efficiency. Challenge 3 Based on your study of aerodynamics, you will modify your wind turbine to achieve greater efficiency. Challenge 4 You will add some type of streamlined cowling or fairing to the wind turbine to achieve greater efficiency and cause less disturbance in the wind. Challenge 5 You will add some type of streamlined spinner to the wind turbine to achieve greater efficiency and cause less disturbance in the wind. Challenge 6 You will do some research on kite design and construction, then, based on your research, design and build a flyable kite. |
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