Aviation Quiz

What is the primary function of thrust in an aircraft?

• It opposes or overcomes the force of drag.

• It increases the weight of the aircraft.

• It decreases the aircraft's speed.

• It acts perpendicular to the lift.

Drag on an aircraft is generally caused by which of the following?

• The dynamic effect of the airfoil

• The forward force produced by the powerplant

• Disruption of airflow by the wing, rotor, fuselage, and other protruding objects

• The force acting parallel to the longitudinal axis

What is the primary force that opposes thrust in an aircraft during steady flight?

• Lift

• Drag

• Weight

• Angle of Attack

According to Newton's Third Law, what happens to the forces acting on an aircraft in steady, straight flight?

• They cancel each other out

• They increase exponentially

• They decrease

• They are unbalanced

What does the angle of attack (AOA) define in the context of aircraft flight?

• The angle between the chord line of the airfoil and the direction of the relative wind

• The angle between the thrust and drag

• The angle of the wings against gravity

• The angle between lift and weight

What is the effect of weight on drag when the aircraft is in level flight?

• Weight significantly contributes to drag

• Weight does not contribute to drag

• Weight decreases drag

• Weight balances out lift

When the engine power is increased, what must also increase to maintain level flight?

• Airspeed and drag

• Airspeed and lift

• Thrust and drag

• Lift and weight

At what condition is it possible to have a slightly negative AOA?

• At low airspeeds and high thrust

• At very high speeds and level flight

• At low airspeeds and reduced thrust

• At high airspeeds and increased weight

What is required to maintain level flight when airspeed decreases?

• Increase in AOA and decrease in thrust

• Decrease in AOA and increase in thrust

• Increase in both AOA and thrust

• Decrease in both AOA and thrust

How can some aircraft change the direction of the thrust?

• By changing the AOA

• By using the control yoke

• By altering the engine power

• By varying the exhaust gases