MOD 11.1 Revision

As a subsonic aircraft speeds-up, its Centre of Pressure.

• moves forward

• moves aft

• is unaffected

Wing spoilers, when used asymmetrically, are associated with

• ailerons

• rudder

• elevators

When a leading edge flap is fully extended, what is the slot in the wing for

• To allow the flap to retract into it when it retracts

• To re-energise the boundary layer

• To increase the lift

Large flap deployment….

• has no effect on spanwise flow

• causes increased spanwise flow towards tips on wing upper surface

• causes increased spanwise flow towards tips on wing lower surface

Answer explanation

Flaps increase the pressure differential between top and bottom surfaces, increase tip vortices and spanwise flow.

Which part of the wing of a swept-wing aircraft stalls first?

• Tip stalls first

• Root stalls first

• Both stall together

With a drop in ambient temperature, an aircraft service ceiling will

• not be affected

• lower

• rise

Answer explanation

As ambient temperature drops, density increases and aircraft performance increases.

Dutch role is movement in

• yaw and roll

• yaw and pitch

• pitch and roll

Answer explanation

Ailerons control the aircraft in the…

• longitudinal plane

• directional plane

• lateral plane

Answer explanation

Ailerons control the aircraft 'IN' the lateral axis, which is 'ABOUT' the longitudinal axis

A Krueger flap is

• a leading edge slat which extends forward

• a flap which extends rearwards but does not lower

• a leading edge flap which hinges forward

Answer explanation

Pitot tubes are heated

• by compressed bleed air

• electrically

• by kinetic heating

Answer explanation