PoF Chapter 11 Controls

An aircraft equipped with an all moving (slab) tailplane, to pitch the aircraft nose up:

• The elevator has to be deflected up

• The elevator has to be deflected down

• The incidence of the tailplane reduces to below 0°

• The incidence of the tailplane increases to above 0°

The Balance Tab:

• provides a force acting on the control surface trailing edge on the same side to the force on the main control surface

• provides a force acting on the control surface trailing edge opposite to the force on the main control surface

• is directly controlled by the pilot

• increases stick force

The servo tab:

• is controlled by the control surface

• allows control forces to be reduced to zero

• is most effective at low IAS

• is controlled directly by the pilot's control

Which of the following is an example of irreversible controls?

• anti-balance tabs

• servo tabs

• power assisted controls

• fully-powered controls

Which of the following statements is correct regarding artificial feel?

• Stick force increases as TAS increases

• Stick force decreases as IAS decreases

• The system is sensitive to static pressure

• The system is sensitive to dynamic pressure

Which of the following statements is correct regarding flutter?

• flutter can be prevented by adding weight to the control surface behind the hinge line

• flutter occurs due to negative longitudinal stability

• flutter can be prevented by adding weight to the control surface in front of the hinge line

• flutter increases hinge moments

Which of the following statements is correct regarding aerodynamic damping in a roll?

• aerodynamic damping is reduced with high rate of roll

• aerodynamic damping is higher with high aspect ratio

• aerodynamic damping is constant with rate of roll

• aerodynamic damping is higher for aircraft with low aspect ratio

Which of the following correctly describes an adverse yaw?

• the right aileron is deflected down but the aircraft yaws to the right

• the right aileron is deflected up but the aircraft yaws to the right

• the elevator is deflected upwards but the aircraft yaws to the right

• the rudder is deflected to the right and the aircraft yaws to the right

Which of the following statements is correct regarding speed brakes?

• extension of speed brakes increases V_MD

• speed brakes reduces take-off distance

• ground spoilers can be activated in flight

• Speed brakes and roll spoilers can be used together at the same time

When the rudder is deflected to the right:

• the aircraft will sideslip to the right

• the aircraft will yaw to the left

• the aircraft will sideslip to the left

• the aircraft will roll to the left