CPD222 Mid 2/65

The region of speed instability is:

• (a) the same as the region of reversed command

• (b) the region in which manual control is not possible

• (c) at speeds below the low buffet speed

• (d) the region above the thrust available and drag curve intersection

In which of the following conditions is thrust available equal to drag?

• (a) in a descent at constant IAS

• (b) in level flight at constant IAS

• (c) in level flight accelerating

• (d) in a climb at constant IAS

Maximum horizontal speed occurs when:

• (a) thrust = minimum drag

• (b) thrust does not increase with increasing speed

• (c) maximum thrust = total drag

• (d) thrust = maximum drag

If a piston-engined aeroplane is to maintain a given angle of attack, configuration and altitude at an increased gross mass it will require:

• (a) an increased airspeed and constant power

• (b) an increased power and a decreased airspeed

• (c) an increased airspeed and increased power

• (d) a higher coefficient of drag

If the thrust available exceeds the thrust required in level flight the aeroplane:

• (a) will accelerate

• (b) will descend if the airspeed remains constant

• (c) decelerates if it is in the region of reversed command

• (d) will decelerate

The critical engine inoperative:

• (a) does not affect the aeroplane performance since it is independent of the power plant

• (b) decreases the power required because of the lower drag caused by the windmilling engine

• (c) increases the power required and decreases the total drag due to the windmilling engine

• (d) increases the power required because of the greater drag caused by the windmilling engineand the compensation for the yaw effect

Which of the following sets are examples of aerodynamic balancing of control surfaces?

• (a) balance tab, horn balance and mass balance

• (b) control surface leading-edge mass, horn balance and mass balance

• (c) spring tab, servo-tab and power-assisted control

• (d) servo-tab, a seal between the wing trailing edge and the control surface leading edge

When power-assisted controls are used for pitch control, this:

• (a) makes trimming unnecessary

• (b) makes aerodynamic balancing of the controls difficult

• (c) can only function as an elevator trim tab

• (d) ensures that partial aerodynamic forces is still felt on the control column

During entry and roll out of a turn adverse yaw is compensated by:

• (a) servo-tabs

• (b) differential aileron deflection

• (c) horn-balanced controls

• (d) antibalanced controls

For an aeroplane that is flying straight and level in trim, the position of the power-assisted elevator relative to the trimmable horizontal stabiliser is:

• (a) dependent on the speed, the position of the slats, flaps and CG

• (b) the elevator deflection is always zero compared to the stabiliser position

• (c) with a forward CG position the elevator is deflected upward and vice versa

• (d) the elevator is always deflected downward to ensure that sufficient authority remains for

  the flare on landing