army aviation questions with correct answers 2023 passed

army aviationthe lift and thrust must exceed the weight and drag. increasing main rotor blades' AOA while maintaining their rotational speed creates extra lift and the aircraft ascends. Decreasing the pitch results in a descent. - correct answer vertical flight the increased efficiency of the rotor disk caused by interference of the airfloe when near the ground - correct answer in ground effect also known as dual rotor; has 2 large horizontal rotor assemblies instead of one main assembly and a tail rotor; uses counter-rotating rotors to cancel out torque - correct answer tamden rotor a pair or rotors turning in opposite directions, but one mounted on a mast with the same axis of rotation, one above the other - correct answer coaxial rotor a set of two rotors turning in opposite directions, with each rotor mast mounted on the helicopter with a slight angle to the other so that the blades intermesh without colliding. - correct answer intermeshing rotors rotor turning in a plane perpendicular to that of the main rotor and parallel to the longitudinal axis of the fuselage. It is used to control the torque of the main rotor and to provide movement about the yaw axis of the helicopter - correct answer tail rotor similar to a joystick; varies the pitch of the rotor blades throughout each revolution of the main rotor system; the result is to tilt the rotor disk in a particular direction, resulting in the helicopter moving in that direction - correct answer cyclic