Level 4 Air Cadet Aviation Exam 2023

5 - 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. Wash-Out - ANSWER Decrease of the angle of incidence at the wingtip. (ex. Installing wingtip fuel tanks, using winglets, drooping the wingtips, etc.) Wash-In - ANSWER Increase of the angle of incidence at the wingtip. (ex. Installing wingtip fuel tanks, using winglets, drooping the wingtips, etc.) Slats - ANSWER Auxiliary airfoils that automatically move out in front of the leading edge of the wing at high angles of attack, to improve low speed stability/handling. Slots - ANSWER Auxiliary airfoils that DO NOT move, they are passageways built in the wing, but serve the same purpose as slats. Pitot Pressure - ANSWER The increase in air pressure caused by the forward motion of the aircraft through the air.Static Pressure - ANSWER The atmospheric pressure outside of the aircraft, not affected by motion or turbulence. Altimeter and Vertical Speed Indicator - ANSWER Relies exclusively on static pressure. Airspeed Indicator - ANSWER Relies on both pitot and static pressure. (hint: ASI) Red - ANSWER Never Exceed Speed (Altimeter colour indication). Yellow - ANSWER Caution Range (Altimeter colour indication). Green - ANSWER Normal Operating Range (Airspeed colour indication). White - ANSWER Range that fully extended flaps may be used (Airspeed colour indication).