Aircademy PoF Quiz

Compared to trailing edge flaps, leading edge devices like Slots...

• reduce the critical angle of attack at a given speed.

• allow higher speeds at take-off and landing.

• produce less drag while allowing a higher angle of attack.

• increase the camber and allow a lower angle of attack.

Stabilization around the lateral axis during cruise is achieved by the...

• horizontal stabilizer.

• ailerons.

• wing flaps.

• vertical rudder.

Flying with speeds higher than the never-exceed-speed (VNE) may result in...

• too high total pressure resulting in an unusable airspeed indicator.

• flutter and mechanically damaging the wings.

• an increased lift-to-drag ratio and a better glide angle.

• reduced drag with increased control forces.

What effects typically result from propeller icing?

• Reduced power output, decreasing RPM.

• Increased power output, decreasing RPM.

• Increased power output, increasing RPM.

• Reduced power output, increasing RPM.

During a straight and steady climb, which force acts additionally, and in the same direction as the drag force, resulting in more power required for climb than for horizontal flight?

• A component of the weight force along the rearward flight path.

• The vertical component of the weight force.

• A component of the thrust along the rearward flightpath.

• A component of the lift force along the forward flightpath.

The static pressure of gases work...

• only vertical to the flow direction.

• only in the direction of the total pressure.

• in all directions.

• only in flow direction.

Bernoulli's equation for frictionless, incompressible gases states that...

• static pressure = total pressure + dynamic pressure.

• total pressure = dynamic pressure - static pressure.

• dynamic pressure = total pressure + static pressure.

• total pressure = dynamic pressure + static pressure.

If surrounded by airflow (v>0), any arbitrarily shaped body produces...

• lift without drag.

• drag and lift.

• constant drag at any speed.

• drag.

All aerodynamic forces can be considered to act on a single point. This point is called...

• center of gravity.

• center of pressure.

• lift point.

• transition point.

The center of pressure is the theoretical point of origin of...

• only the resulting total drag.

• all aerodynamic forces of the profile.

• gravity forces of the profile.

• gravity and aerodynamic forces.