PRC Engineering Practice Test & Exam Prep | Philippines

Cl is zero at zero angle of attack and increases linearly with a slope of approximately 2*pi per radian. Cl is positive at zero angle of attack and increases quadratically with alpha. Cl is negative at zero angle of attack and decreases linearly with a slope of -2*pi per radian. Cl is zero at zero angle of attack and remains constant regardless of the angle of attack.