SIFT- Army Aviation question well answered 2023

SIFT- Army Aviation question well answered 2023What gives a helicopter its lifting force? - correct answer Airfoil What is a "airfoil"? - correct answer A blade; it cuts through the air so it passes above and below it. The top of the airfoil is ____ . - correct answer curved What results in high pressure from the airfoil? - correct answer The air that goes below the airfoil has a shorter distacne to travel and is slower. The amount of lift depends on what things? - correct answer the material, the shape of the airfoil, and the density of the air What factors can a pilot influence in generating the amount of lift? - correct answer The pitch angle and the AOA What is a AOA? - correct answer the angle between the chord line and the direction of incoming air. ( an imaginary line at the tip of the aircraft, outwards) * the greater the AOA is the greater the portion of the force that is directed rearwards. AOA is greatest at lower airspeeds & reduced at higher airspeeds. What is a pitch angle? - correct answer The angle between the chord line and the direction of the rotor's spin. What is a chord line? - correct answer a line between the leading edge and the trailing edge of the airfoil. ( imaginary line created at the top of an aircraft) How do you TYPICALLY generate lift? - correct answer A positive AOA ( the front of the blade needs to be raised above the back). Can you generate lift if the angle is at 0? - correct answer No. When the two are actually at the same height, relative to the wind, no lift will be generated. What is the definition of weight? - correct answer Weight is the force acting on a body due to gravity. What is the definition of gravity? - correct answer Gravity is the acceleration acting on a body due to the Earth's mass. The average acceleration upwards must be... - correct answer larger than the average gravity acting on the body. The total generated lifts needs to be... - correct answer a larger force than the loaded weight. What accounts for the weight of an aircraft? - correct answer The weight of the helicopter itself. All of its passengers, cargo, fuel, and anything else that would fall to the ground. The _____1____ the aircraft, the ____2____ the force needed to move it, requiring more ___3___ to get off the ground. - correct answer 1. heavier 2. greater 3. lift What factor in weight must you consider midflight? - correct answer fuel What is banking? - correct answer This maneuver is used to change the aircraft heading. The turn is initiated by using the ailerons or spoilers to roll, or bank, the aircraft to one side What happens when "banking" a helicopter? - correct answer the lift is no longer generated directly downwards; some of the vertical lift is redirected into horizontal movement.