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The amount of excess load that can be imposed on the wing of an airplane depends on the
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What is the definition of Va?
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A103
Aerodynamic Principles; IFS
| Question | Answer |
|---|---|
| The amount of excess load that can be imposed on the wing of an airplane depends on the | speed of the airplane. |
| What is the definition of Va? | The design maneuvering speed. |
| What causes an airplane to stall? | Exceeding the critical angle of attack. |
| What determines the longitudinal stability of an airplane? | The location of the CG with respect to the center of lift. |
| The wind condition that requires maximum caution when avoiding wake turbulence on landing is a | light, quartering tailwind |
| How will frost on the wings of an airplane affect takeoff performance? | Frost will disrupt the smooth flow of air over the wing, adversely affecting its lifting capability. |
| Ground effect is most likely to result in which problem? | Becoming airborne before reaching recommended takeoff speed. |
| Which V-speed represents maneuvering speed? | Va |
| A propeller rotating clockwise (as seen from the rear) creates a spiralling slipstream that tends to rotate the airplane to the | left around the vertical axis. |
| Why is frost considered hazardous to flight? | Frost spoils the smooth flow of air over the wings, thereby decreasing lifting capability. |
| If an airplane weighs 4,500 pounds, what approximate weight would the airplane structure be required to support during a 45 degree banked turn while maintaining altitude? *chart included* | 6,300 pounds. |
| What is the definition of Vne? | Never exceed speed |
| Which of the following best describes "roll"? | Control of the airplane about the longitudinal axis by use of the ailerons to attain a desired bank angle in relation to the natural horizon. |
| What is the purpose of the rudder on an airplane? | To control yaw. |
| When does P-factor cause the airplane to yaw to the left? | When at high angles of attack. |
| Which V-speed represents maneuvering speed? | Va |
| 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 tendency of an aircraft to develop forces which restore it to its original condition, when disturbed from a condition of steady flight, is known as | stability. |
| If severe turbulence is encountered, the aircraft's airspeed should be reduced below | maneuvering speed. |
| How does frost affect the lifting surfaces of an airplane on takeoff? | Frost may prevent the airplane from becoming airborne at normal takeoff speed. |
| The angle of attack at which an airplane wing stalls will | remain the same regardless of weight. |
| L/D Max, the speed which results in the maximum lift-to-drag ration, is also: | the best glide airspeed. |
| The airplane will stall at a higher indicated airspeed when excessive maneuvering loads are imposed by steep turns, pull-ups, or other abrupt changes in its flightpath; this is called | Accelerated stall. |
| During the entry to a right turn, the nose of the aircraft swings slightly to the left before it swings along the horizon the the right. This is a | slipping entry, caused by adverse yaw; more right rudder under pressure should have been applied for the amount of aileron pressure being used. |
| Lift produced by an airfoil is the net force developed perpendicular to the | relative wind. |
| During a spin to the left, which wing(s) is/are stalled? | Both wings are stalled |
| As altitude increases, the indicated airspeed at which an airplane stalls in the same configuration will | remain the same |
| How does the wake turbulence vortex circulate around each wingtip? | Outward, upward, and around each tip. |
| Wingtip vortices created by aircraft tend to | sink below the aircraft generating turbulence. |
| Which of the following best describes "pitch"? | Control of the airplane about the lateral axis by using the elevator to raise and lower the nose in relation to the natural horizon. |
| The amount of excess load that can be imposed on the wing of an airplane depends upon the | speed of the airplane. |
| What force makes an airplane turn? | The horizontal component of lift. |
| The airplane is trimmed for straight-and-level unaccelerated flight. The control stick is momentarily pushed forward and then released. The airplane enters a series of self-damping pitch oscillations and eventually returns to straight-and-level... | Positive static and dynamic stability |
| What important airspeed limitation is not color coded on the airspeed indicator? | Maneuvering speed |
| The angle between the chord line of an airfoil and the relative wind is known as the angle of | attack |
| What is the relationship of lift, drag, thrust, and weight when the airplane is in straight and level, unaccelerated flight? | Lift equals weight and thrust equals drag. |
| 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. |
| When are the four forces that act on a aircraft in equilibrium? | During unaccelerated flight. |
| The four forces acting on an airplane in flight are | Lift, weight, thrust and drag. |
| What causes an airplane to pitch nosedown when power is reduced and controls are not adjusted? | The downwash on the elevators from the propeller slipstream is reduced and elevator effectiveness is reduced. |
| With the flaps in the CRUISE position, what is the positive load factor limit for the DA20-C1? | +4.4 |
| An aircraft wing is designed to produce lift resulting from | higher air pressure below the wing's surface and lower air pressure above the wing's surface. |
| An airplane has been loaded in such a manner that the CG is located aft of the CG limit. One undesirable flight characteristic a pilot might experience with this airplane would be | difficulty in recovering from a stalled condition. |
| The greatest vortex strength occurs when the generating aircraft is | heavy, clean, and slow |
| 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. |
| Loading an airplane to the most aft CG will cause the airplane to be | less stable at all speeds. |
| In what flight condition must an airplane be placed in order to spin? | Stalled |
| A pitch attitude exceeding ____ degrees from level flight is prohibited by Doss procedures. | 30 |
| Which of the following best describes "yaw"? | Control of the airplane about the vertical axis by using the rudder to move the nose right and left relative to the airplane's flight path. |
| Which basic flight maneuver increases the load factor on an airplane as compared to the straight-and-level flight? | Turns |
| What will cause the nose of an aircraft to move in the direction of the turn before the bank starts in a turn entry? | Rudder being applied too soon. |
| The term "angle of attack" is defined as the angle | between the wing chord line and the relative wind. |
| What is ground effect? | The result of the interference of the surface of the Earth with the airflow patterns about an airplane. |
| The airplane is trimmed for straight-and-level unacc. flight. The control stick is pushed forward then released. If the plane shows an initial tendency to return to the trimmed angle of attack, what type of stability has been demonstrated? | positive static longitudinal stability. |
| With the flaps in the CRUISE position, what is the negative load factor limit for the DA20-C1? | -2.2 |
| During an approach to a stall, an increased load factor will cause the airplane to | stall at a higher airspeed |
| What is one purpose of wing flaps? | To enable the pilot to make steeper approaches to a landing without increasing the airspeed. |
| Which action will result in an airplane exceeding its critical angle of attack? | Demanding more Gs than the wing can provide at a given airspeed. |
| Which would likely result in a slipping turn? | Increasing the rate of turn without using the rudder. |
| An airplane said to be inherently stable will | require less effort to contol. |
| In what flight condition is torque effect the greatest in a single-engine airplane? | Low airspeed, high power, high angle of attack. |
| Which statement about adverse yaw is most correct? | Adverse yaw can be seen during aileron defection, when more lift on the rising wing results in more induced drag on that wing which pulls the nose toward the rising wing. |
| Bank angles exceeding ___ degrees are prohibited by Doss procedures. | 60 |
| The left turning tendency of an airplane caused by the P-factor is the result of the | propeller blade descending on the right, producing more thrust than the ascending blade on the left. |
Created by:
mscourt