Private Pilot Chapter 3 (Four Forces of Flight)

(Refer to figure 2.) If an airplane weighs 3,300 lbs, what approxiate weight would the airplane structure be required to support during a 30 degree banked turn while maintaining altitude?

3,960 lbs

(refer to figure 2.) If an airplane weighs 2,300 lbs, what approximate weight would the airplane structure be required to support during a 60 degree banked turn while maintaining altitude?

4,600 lbs

(refer to figure 2.) If an airplane weighs 4,500 lbs, what approximate weight would the airplane structure be required to support during a 45 degree banked turn while maintaining altitude?

6,740lbs

Changes in the center of pressure of a wing affect the aircraft's:

Aerodynamic balance and controllability.

Which statement relates to Bernoulli's principle?

Air traveling faster over the curved upper surface of an airfoil causes lower pressure on the top surface.

The angle between the chord line of an airfoil and the relative wind is known as the angle of:

Attack

(Refer to figure 1. ) The acute angle A is the angle of:

Attack.

Ground effect is most likely to result in which problem?

Becoming airborne before reaching recommended takeoff speed.

During a spin to the left, which wing(s) is/are stalled?

Both wings are stalled.

The term "angle of attack" is the angle between the:

Chord line of the wing and the relative wind speed

An airplane has been loaded in such a manner that the CG is located aft of the aft CG limit. One undesirable flight characteristic a pilot might experience with this airplane would be:

Difficulty in recovering from a stalled condition.

When are the four forces that act on an airplane in equilibrium?

During unaccelerated flight

One of the main functions of flaps during approach and landing is to:

Increase the angle of descent without increasing the airspeed.

What must a pilot be aware of as a result of ground effect?

Induced drag decreases; therefore, any excess speed at the point of flare may cause considerable floating.

Loading an airplane to the most aft CG will cause the airplane to be:

Less stable at all speeds.

Floating caused by the phenomenon of ground effect will be most realized during an approach to land when at:

Less than the length of the wingspan above the surface.

What is the relationship of lift, drag, thrust, and weight when the airplane is in straight-and-level flight?

Lift equals weight and thrust equals drag

The four forces acting on an airplane in flight are:

Lift, weight, thrust, and drag

In what flight condition is torque effect the greatest in a single-engine airplane?

Low airspeed, high power, high angle of attack

The left turning tendency of an airplane caused by P-factor is the result of the:

Propeller blade descending on the right, producing more thrust than the ascending blade on the left.

The angle of attack at which an airplane wing stalls will:

Remain the same regardless of gross weight

An airplane said to be inherently stable will

Require less effort to control

The amount of excess load that can be imposed on the wing of an airplane depends upon the:

Speed of the airplane.

During an approach to a stall, an increased load factor will cause the airplane to:

Stall at a higher airspeed.

In what flight condition must an aircraft be placed in order to spin?

Stalled

Select the four flight fundamentals involved in maneuvering an aircraft.

Straight-and-level flight, turns, climbs, and descents.

What causes an airplane (except T-tail) to pitch nose-down when power is reduced and controls are not adjusted?

The down-wash on the elevators from the propeller slipstream is reduced and elevator effectiveness is reduced

What force makes an airplane turn?

The horizontal component of lift.

What determines the longitudinal stability of an airplane?

The location of CG with respect to the center of lift.

What is Ground Effect?

The result of the interference of the surface of the Earth with the airflow patterns about an airplane.

What is the purpose of wing flaps?

To enable the pilot to make steeper approaches to a landing without increasing the airspeed.

Which basic flight maneuver increases the load factor on an airplane as compared to straight-and-level flight?

Turns

When does P-factor cause the airplane to yaw to the left?

When at high angles of attack.