ASTB-E Exam Prep 2023 with 100% correct answers

Airfoil - correct answer A wing or helicopter blade that generates more lift than drag as air flows over its upper and lower surfaces. They are carefully designed and can be made of non-metallic materials such as composites. Angle of attack - correct answer The angle between the chord line of an airfoil and its direction of motion relative to the air (i.e., the relative wind). It is an aerodynamic angle. Angle of incidence - correct answer In the context of fixed-wing airplanes, the angle of incidence is the inclination of the wing or tail surface attached to the fuselage relative to an imaginary line that is parallel to the aircraft's longitudinal axis. Anhedral angle - correct answer The downward angle of an airplane's wings and tail plane from the horizontalis (negative dihedral angle) Attitude - correct answer An aircraft's position relative to its three axes and a reference such as the earth's horizon Center of gravity (CG) - correct answer An aircraft's center of mass, the theoretical point through which the entire weight of the machine is assumed to be concentrated Chord - correct answer The distance between the leading and trailing edges along the chord line is an airfoil's chord. In case of a tapered airfoil, as viewed from above, the chord at its tip will be different than at its root. Average chord describes the average distance. Chord line - correct answer An imaginary straight line from the airfoil's leading (front) edge to its trailing (aft)edge Constant speed propeller - correct answer a controllable-pitch propeller whose angle is automatically changed in flight by a governor in order to maintain a constant number of revolutions per minute (rpm) despite changing aerodynamic loads Controllability - correct answer A measure of an aircraft's response relative to flight control inputs from the pilot Controllable pitch propeller - correct answer A propeller that can be varied in terms of its blade angle by the pilot via a control in the cockpit Coordinated flight - correct answer when the pilot applied flight and power control inputs to prevent slipping or skidding during any aircraft maneuver Critical angle of attack - correct answer The angle of attack at which an airfoil stalls (loses lift) regardless of the aircraft's airspeed, attitude, or weight