Assembly & Rigging Section Exam

What is used in some wings to improve its lateral stability?



- Wing twist

- Wing dihedral

- Angle of incidence - ANS_Wing Dihedral



During powered flight of a helicopter, the direction of airflow through the rotor is...



- At right angles to the rotor

- From top to bottom

- From bottom to top - ANS_From top to bottom



A condition which causes a single main rotor helicopter to drift in the direction of the tail rotor thrust is
referred to as...



- Ground effect

- Translational lift

- Translating tendency - ANS_Translating tendency



Which trailing edge flap system increases wing area?

, - Fowler flaps

- Krueger flaps

- Slotted flaps - ANS_Fowler flaps



Pilot pulls aft on the control column, while rotating the control wheel clockwise:



- Nose will pitch up, and the aircraft will roll to the right

- Nose will pitch down, and the aircraft will roll to the right

- Nose will pitch down, left aileron will move up, the right aileron will move down, causing the aircraft to
roll left - ANS_Nose will pitch up, and the aircraft will roll to the right



By turning the control wheel counter-clockwise:



- The left aileron will deflect down the right will deflect up causing the aircraft to roll to the right

- The left aileron will deflect down the right will deflect up causing the aircraft to rol to the left

- The left aileron will deflect up the right will deflect down causing the aircraft to roll to the left -
ANS_The left aileron will deflect up and the right will deflect down causing the aircraft to roll to the left



What aircraft structure gives the aircraft directional stability?



- Horizontal stabilizer

- Elevator

- Vertical Stabilizer - ANS_Vertical Stabilizer



The additional lift produced by the helicopter main rotor system as it enters horizontal flight is referred
to as...