Term
| What is one purpose of wing flaps? |
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Definition
| to enable the pilot to make steeper approaches to a landing without increasing the airspeed |
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Term
| One of the main functions of flaps during approach and landing is to |
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Definition
| increase the angle of descent without increasing the airspeed |
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Term
| What is the purpose of the rudder on an airplane? |
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Definition
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Term
| The four forces acting on an airplane in flight are |
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Definition
| lift, weight, thrust, and drag |
|
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Term
| when are the four forces that act on an airplane in equilibrium? |
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Definition
| during unaccelerated flight |
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Term
| What is the relationship of lift, drag, thrust, and weight when the airplane is in straight-and-level flight? |
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Definition
| lift equals weight and thrust equals drag. |
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Term
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Definition
| air traveling faster over the curved upper surface of an airfoil causes lower pressure on the top surface |
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Term
| The term "angle of attack' is defined as the angle |
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Definition
| between the wing chord line and the relative wind |
|
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Term
| angle of attack is defined as teh angle between the chord line of an airfoil and the |
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Definition
| direction of the relative wind |
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Term
| the angle between the chord line of an airfoil and the relative wind is known as the angle of |
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Definition
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Term
| the angle of attack at which an airplane wing stalls will |
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Definition
| remain the same regardless of gross weight |
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Term
| as altitude increases, the indicated airspeed at which a given airplane stalls in a particular configuration will |
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Definition
| remain the same regardless of altitude |
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Term
| in what flight condition must an aircraft be placed in order to spin? |
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Definition
|
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Term
| during a spain to the left, which wings are stalled? |
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Definition
|
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Term
| how will frost on the wings of an airplane affect takeoff performance? |
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Definition
| frost will disrupt the smooth flow of air over the wing, adversely affecting its lifting capability |
|
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Term
| why is frost considered hazardous to flight? |
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Definition
| frost spoils the smooth flow of air over the wings, thereby decreasing lifting capability |
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Term
| How does frost affect the lifting surfaces of an airplane on takeoff? |
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Definition
| frost may prevent the airplane from becoming airborne at normal takeoff speed |
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Term
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Definition
| the result of the interference of the surfaces of the Earth with the airflow patterns about an airplane |
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Term
| Floating caused by the phenomenon of ground effect will be most realized during an approach to land when at |
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Definition
| less than the length of the wingspan above the surface |
|
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Term
| what must be a pilot be aware of as a result of ground effect? |
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Definition
| induced drag decreases; therefore, any excess speed at the point of flare may cause considerable floating. |
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Term
| Ground effect is most likely to result in which problem? |
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Definition
| becoming airborne before reaching recommended takeoff speed |
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Term
| what force makes an airplane turn? |
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Definition
| the horizontal component of lift |
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Term
| an airplane said to be inherently stable will |
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Definition
| require less effort to control |
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Term
| what determines the longitudinal stability of an airplane? |
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Definition
| the location of the CG with respect to the center lift |
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Term
| Changes in the center of pressure of a wing affect the aircraft's.... |
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Definition
| aerodynamic balance and controllability |
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Term
| an airplane has been loaded in such a manner that the CG is located aft of the aft CG limit. One undesirable flight characterisitc a pilot might experience with this airplane would be |
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Definition
| difficulty in recovering from a stalled condition |
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Term
| what causes an airplane to pitch nosedown when power is reduced and controls are not adjusted? |
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Definition
| the downwash on the elevators from the propeller slipstream is reduced and elevator effectiveness is reduced |
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Term
| Loading an airplane to the most aft CG will cause the airplane to be |
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Definition
| less stable at all speeds |
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Term
| In what flight condition is torque efect the greatest in a single-engine airplane? |
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Definition
| low airspeed, high power, high angle of attack. |
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Term
| The left turning tendency of an airplane caused by P-factor is the result of the |
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Definition
| propeller blade descending on the right, producing more thrust than the ascending blade on the left. |
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Term
| When does P-factor cause the airplane to yaw to the left? |
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Definition
| When at high angles of attack |
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Term
| The amount of excess load that can be imposed on the wing of an airplane depends upon the |
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Definition
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Term
| Which basic flight maneuver increases the load factor on an airplane as compared to straight-and-level flight? |
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Definition
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Term
| During an approach to a stall, an increased load factor will cause the aircraft to |
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Definition
| stall at a higher airspeed |
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