Chapter 4: Problem 14
The question is often asked: Can an airfoil fly upside-down? To answer this, make the following calculation. Consider a positively cambered airfoil with a zero-lift angle of ?3?. The lift slope is 0.1 per degree. (a) Calculate the lift coefficient at an angle of attack of 5?. (b) Now imagine the same airfoil turned upside-down, but at the same 5? angle of attack as part (a). Calculate its lift coefficient. (c) At what angle of attack must the upside-down airfoil be set to generate the same lift as that when it is right-side-up at a 5? angle of attack?
Short Answer
Step by step solution
Key Concepts
These are the key concepts you need to understand to accurately answer the question.