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Level 4 Air Cadet Aviation Exam 2025 Questions and Answers 25 - ....ANSWER ...-The thickest part of the conventional airfoil occurs at __% of the chord. 50 - ....ANSWER ...-The thickest part of a laminar flow airfoil occurs at __% of the chord. Boundary Layer - ....ANSWER ...-The very thin layer of air lying over the surface of the wing. Laminar Layer - ....ANSWER ...-The area at the front of the wing where air flows smoothly over the surface. Turbulent Layer - ....ANSWER ...-The area further along the wing where air slows down due to friction and becomes turbulent. Transition Point - ....ANSWER ...-The point where laminar flow changes to turbulent flow. Aspect Ratio - ....ANSWER ...-The relationship between the length of the wing and its width, calculated by dividing the wingspan by the average chord (Leading edge to trailing edge). Angle of Incidence - ....ANSWER ...-The angle at which the wing is permanently inclined to the longitudinal axis of the wing. …FOR STUDENTS ONLY…©️2025 ALL RIGHTS RESERVED… 1