Aerodynamics

Which of the following is considered a primary flight control?. Elevator. N/A. N/A.

What is the purpose of a servo tab?. Reduce control forces by deflecting in the proper direction to move a primary flight control. N/A. N/A.

What performance should a pilot of a light, twin-engine airplane be able to maintain at V(MC)?. Heading. N/A. N/A.

What are some characteristics of an airplane loaded with the CG at the aft limit?. Lowest stall speed, highest cruise speed, and least stability. N/A. N/A.

What is the purpose of an anti-servo tab?. Prevent a control surface from moving to a full-deflection position due to aerodynamic forces. N/A. N/A.

When does a typical aircraft exhibit reduced longitudinal stability?. With the center of gravity (CG) near the aft limit. N/A. N/A.

In a light, twin-engine airplane with one engine inoperative, when is it acceptable to allow the ball of a slip-skid indicator to be deflected outside the reference lines?. When operating at any airspeed of Vmc or greater with only enough deflection to zero the side slip. N/A. N/A.

At which speed will increasing the pitch attitude cause an airplane to climb?. High speed. N/A. N/A.

For which purpose may flight spoilers be used?. Reduce the wings´ lift upon landing. N/A. N/A.

How does Vs (KTAS) speed vary with altitude?. Varies directly with altitude. N/A. N/A.

What is a characteristic of longitudinal instability?. Pitch oscillations becoming progressively greater. N/A. N/A.

What is the movement of the center of pressure when the wingtips of a sweptwing airplane are shock-stalled first?. Inward and forward. N/A. N/A.

Which direction from the primary control surface does an anti-servo tab move?. Same direction. N/A. N/A.

What effect does an increase in airspeed have on a coordinated turn while maintaining a constant angle of bank and altitude?. The rate of turn will decrease resulting in no changes in load factor. N/A. N/A.

An airplane loaded with the Center of Gravity aft the rear CG limit could. make it more difficult to flare for landing. N/A. N/A.

What is the result of shock-induced separation of airflow occuring symmetrically near the wing root of a sweptwing aircraft?. A severe moment or ´Mach tuck´. N/A. N/A.

When compared to plain flaps, split flaps. produce only slightly more lift, but much more drag. N/A. N/A.

What effect does extending leading edge slats have on an airplane´s wing?. Increase the camber and CL (MAX). N/A. N/A.

What true airspeed and angle of attack should be used to generate the same amount of lift as altitude is increased?. A higher true airspeed for any given angle of attack. N/A. N/A.

During a turn with constant power. the aircraft nose will pitch down. N/A. N/A.

What is the purpose of an elevator trim tab?. Modify the downward tail load for various airspeeds in flight eliminating flight-control pressures. N/A. N/A.

What is a difference between the fowler flap system and split flap system?. Fowler flaps produce the greatest change in pitching moment. N/A. N/A.

What is an advantage of a sweptback wing?. The design delays the onset of compressibility. N/A. N/A.

What effect does the leading edge slot in the wing have on performance?. Changes the stalling angle of attack to a higher angle. N/A. N/A.

A turbojet airplane has an increase in specific range with altitude, which can be attributed to three factors. On of those factors is. an increase in proportion of velocity versus thrust required. N/A. N/A.

What is one disadvantage of a sweptwing design?. The wingtip section stalls prior to the wing root. N/A. N/A.

How can an airplane produce the same lift in ground effect as when out of ground effect?. A lower angle of attack. N/A. N/A.

What is the principal advantage of a sweepback design wing over a straightwing design?. The critical Mach number will increase significantly. N/A. N/A.

Which of the following is considered an auxiliary flight control?. Leading-edge flaps. N/A. N/A.

Upon which factor does wing loading during a level coordinated turn in smooth air depend?. Angle of bank. N/A. N/A.

Describe dynamic longitudinal stability. Motion about the lateral axis. N/A. N/A.

Identify the type stability if the aircraft attitude tends to return to its original position after the controls have been neutralized. Positive static stability. N/A. N/A.

If an aircraft with a gross weight of 2,000 pounds were subjected to a total load of 6,000 pounds in flight, the load factor would be. 3 Gs. N/A. N/A.

What is the primary function of the leading edge flaps in landing configuration during the flare before touchdown?. Prevent flow separation. N/A. N/A.

What is the relationship between induced and parasite drag when the gross weight is increased?. Induced drag increases more than parasite drag. N/A. N/A.

Which direction from the primary control surface does a servo tab move?. Opposite direction. N/A. N/A.

Identify the type stability if the aircraft attitude remains in the new position after the controls have been neutralized. Neutral longitudinal static stability. N/A. N/A.

What is load factor?. Lift divided by the total weight. N/A. N/A.

Swept wings. increase the critical Mach number. N/A. N/A.

What is the safest and most efficient takeoff and initial climb procedure in a light, twin-engine airplane? Accelerate to. an airspeed slightly above V(MC), then lift off and climb at the best rate-of-climb airspeed. N/A. N/A.

Which is a purpose of ground spoilers?. Reduce the wings´ lift upon landing. N/A. N/A.

Swept wings causes a significant. reduction in effectiveness of flaps. N/A. N/A.

Why do some airplanes equipped with inboard/outboard ailerons use the outboards for slow flight only?. Aerodynamic loads on the outboard ailerons tend to twist the wingtips at high speeds. N/A. N/A.

How can the pilot increase the rate if turn and decrease the radius at the same time?. Steepen the bank and decrease airspeed. N/A. N/A.

What procedure is recommended for an engine-out approach and landing?. The flightpath and procedures should be almost identical to a normal approach and landing. N/A. N/A.

Upon landing, spoilers. function by increasing tire to ground friction. N/A. N/A.

What will be the ratio between airspeed and lift if the angle of attack and other factors remain constant and airspeed is doubled? Lift will be. four times greater. N/A. N/A.

Which is a purpose of leading-edge flaps?. Increase the camber of the wing. N/A. N/A.

For significant benefit, wing sweep must be at least. 30° to 35°. N/A. N/A.

If the boundary layers separates. the wing is about to stall and stop producing lift. N/A. N/A.

What is the reason for variations in geometric pitch along a propeller or rotor blade?. It permits a relatively constant angle of attack along its length when in cruising flight. N/A. N/A.

When are inboard ailerons normally used?. Low-speed and high-speed flight. N/A. N/A.

Generally, the turning performance of an airplane is defined by. aerodynamic and structural limits at low altitude. N/A. N/A.

What characteristic should exist if an airplane is loaded to the rear of its CG range?. Unstable about the lateral axis. N/A. N/A.

Within what Mach range does transonic flight regimes usually occur?. .75 to 1.20 Mach. N/A. N/A.

What is the relationship of the rate of turn with the radius of turn with a constant angle of bank but increasing airspeed?. Rate will decrease and radius will increase. N/A. N/A.

Aerodynamic braking is only effective up to approximately. 60% to 70% of touchdown speed. N/A. N/A.

A bank angle of 15 degrees will increase induced drag by about. 7%. N/A. N/A.

What is the purpose of a control tab?. Move the flight controls in the event of manual reversion. N/A. N/A.

The stall speed of an airplane. is affected by weight, and bank angle. N/A. N/A.

Identify the type stability if the aircraft attitude tends to move farther from its original position after the controls have been neutralized. Negative static stability. N/A. N/A.

For a given angle of bank, the load factor imposed on both the aircraft and pilot in a coordinated constant-altitude turn. remains constant regardless of airspeed changes. N/A. N/A.

How does the stall speed (KCAS) vary as you climb from sea level to 33,000 feet?. It remains relatively unchanged throughout the climb. N/A. N/A.

Ground spoilers used afer landing are. more effective at high speed. N/A. N/A.

What adverse flight characteristics could result from operating an aircraft with the center of gravity (CG) beyond the published forward limitations?. It could be difficult or impossible to flare for landing. N/A. N/A.

What is the highest speed possible without supersonic flow over the wing?. Critical Mach number. N/A. N/A.

Which is a purpose of wing-mounted vortex generators?. Delays the onset of drag divergence at high speeds and aids in maintaining aileron effectiveness at high speeds. N/A. N/A.

What is the effect on total drag of an aircraft if the airspeed decreases in level flight below that speed for maximum L/D?. Drag increases because of increased induced drag. N/A. N/A.

On which type of wing are flaps most effective?. Thick wing. N/A. N/A.

What could cause a turbine engine hot start?. Lack of airflow due to insufficient turbine RPM. N/A. N/A.

Airflow separation over the wing can be delayed by using vortex generators. making the wing surface rough and/or directing high pressure air over the top of the wing or flap through slots. N/A. N/A.

What is the absolute ceiling of an airplane?. When the maximum rate of climb and the maximum angle of climb speeds converge. N/A. N/A.

As an airplane climbs to higher altitudes, what happens to the calibrated airspeed in relation to true airspeed?. It decreases. N/A. N/A.

What flight condition should be expected when an aircraft leaves ground effect?. An increase in induced drag requiring a higher angle of attack. N/A. N/A.

Precise roll control using a rudder on a transport category airplane. is difficult and therefore not recommended. N/A. N/A.

When are outboard ailerons normally used?. Low-speed flight only. N/A. N/A.

When piloting a turbojet transport airplane, what is a possible result when operating at speeds 5 to 10 percent above the critical Mach number?. Decreased control surface. N/A. N/A.

Under what condition should stalls never be practiced in a twin-engine airplane?. With one engine inoperative. N/A. N/A.

By changing the angle of attack of a wing, the pilot can control the airplane´s. lift, airspeed, and drag. N/A. N/A.

While operating a turbojet transport airplane at high altitude, which of the following is most likely to cause a low speed Mach buffet?. The airplane is flown too slow for its weight and altitude. N/A. N/A.

During a skidding turn to the right, what is the relationship between the component of lift and centrifugal force?. Centrifugal force is greater than the horizontal lift component. N/A. N/A.

At what Mach range does the subsonic flight range normally occur?. Below .75 Mach. N/A. N/A.

Which engine is the ´critical´ engine of a twin-engine airplane?. The one with the center of thrust closest to the centerline of the fuselage. N/A. N/A.

How does an increase in an aircraft´s weight affect its climb performance?. The aircraft will climb at a lower angle of attack, which allows for a higher TAS and higher rate of climb. N/A. N/A.

What affects indicated stall speed?. Weight, load factor, and power. N/A. N/A.

What does the blue radial line on the airspeed indicator of a light, twin-engine airplane represent?. Maximum single-engine rate of climb. N/A. N/A.

Which direction from the primary control surface does an elevator adjustable trim tab move when the control surface is moved?. Remains fixed for all positions. N/A. N/A.

The primary purpose of high-lift devices is to increase the. lift at low speeds. N/A. N/A.

What effect, if any, does altitude have on V(MC) for an airplane with unsupercharged engines?. Decreases with altitude. N/A. N/A.

Why must the angle of attack be increased during a turn to maintain altitude?. Compensate for loss of vertical component of lift. N/A. N/A.

What is the free stream Mach number which produces first evidence of local sonic flow?. Critical Mach number. N/A. N/A.

If no corrective action is taken by the pilot as angle of bank is increased, how is the vertical component of lift and sink rate affected?. Lift decreases and the sink rate increases. N/A. N/A.

What is a purpose of flight spoilers?. Reduce lift without decreasing airspeed. N/A. N/A.