SIFT Army Aviation Information questions n answers graded A+ 2023 passed

SIFT Army Aviation InformationFour forces acting on a helicopter in flight. - correct answer Lift, Thrust, Weight, Drag Induced Drag - correct answer That part of the drag on an airfoil that arises from the development of lift. Parasite Drag - correct answer Drag from components that don't create lift. (Wheels, Fuselage) The Venturi Effect - correct answer The Venturi effect is the reduction in fluid pressure that results when a fluid flows through a constricted section (or choke) of a pipe. Cyclic Control - correct answer Used to control direction/ tilt of aircraft. The Collective (Control) - correct answer Left side of the pilot, moves up and down. Alters angle of attack of rotor blades Throttle - correct answer Controls power produced by the engine Anti-torque pedals - correct answer Control the yaw of the aircraft, where it is pointing Advancing blade - correct answer Airfoil - correct answer Either the rotor blades themselves or the horizontal stabilizers. Angle of Attack - correct answer The angle between the chord line of an airfoil and the airfoil's direction of motion relative to the air. (Aerodynamic Angle) Angle of Incidence - correct answer Angle between chord line of each blade and the rotor system's place of rotation. (Mechanical Angle) Autorotation - correct answer Loss of engine power, angle down so that air keeps the rotors spinning. Freewheeling unit disconnects. Blade Span - correct answer Length from top of blade to drive shaft. Chord/Chord Line - correct answer Coning/ Coning Angle - correct answer Coning angle is the difference between the line perpendicular to the mast and the blades in motion. Coriolis Effect - correct answer A rotating body spins at the same speed unless acted upon by an external force. Dissymmetry of Lift - correct answer The advancing blade experiences greater wind speed and as such produces more lift than the retreating side. The is counteracted by allowing blades to flap up and down. Driven Region - correct answer Has the effect of slowing the rotor's spin. Driving Region - correct answer Supply's thrust. Effective Translational Lift (ETL) - correct answer Aircraft is moving fast enough as to move through fresh circulated air. Increases efficiency of movement. Forward Flight - correct answer Tip-path is tilted forward, thrust brings aircraft forward. Gyroscopic Precession - correct answer When a force is applied to one side of a spinning object, the opposite happens to the other side. Hover - correct answer Lift is equal to weight plus a little more to make up for blade tip vortices.