항공사 기출문제 정리 15

1. What is a characteristic of longitudinal instability?

 

a. Pitch oscillations becoming progressively greater

b. Bank oscillations becoming progressively greater

c. Aircraft constantly tries to pitch down

 

2. Identify the type of stability if the aircraft attitude tends to move farther from its original position after the controls have been neutralized

 

a. Negative static stability

b. Negative dynamic stability

c. Positive static stability

 

3. The engine thrustline

 

a. has very limited influence on flight stability

b. has no effect on stability in turbojets or fanjets

c. can be stabilizing or destabilizing

 

4. Some airplanes can experience compressibility effects at flight speed well below the speed of sound due to

 

a. improperly compensated and adjusted trim surfaces

b. extreme turbulence encounters

c. surfaces that produce different local flow velocities

 

5. The engine's thrust line above the center of gravity

 

a. produces a destabilizing effect

b. produces a stabilizing effect

c. has little effect on the stability of the aircraft

 

6. What characteristic should exist if an airplane is loaded to the rear of its CG range?

 

a. Sluggish in aileron control

b. Sluggish in rudder control

c. Unstable about the lateral axis

 

7. An airplane loaded with the CG at the aft limit will

 

a. fly more efficiently

b. be very unbalanced in lateral control forces

c. feel heavy in the longitudinal axis

 

8. Which performance factor decreases as airplane gross weight increases, for a given runway?

 

a. Critical engine failure speed

b. Rotation speed

c. Accelerate-stop distance

 

9. Arriving over the runway threshold 100 ft. high (150 HAT) would add approximately how many feet to the landing distance?

 

a. 1,000 ft

b. 1,500 ft

c. 2,000 ft

 

10. Approaching the runway 1° below glidepath can add how many feet to the landing distance?

 

a. 250 feet

b. 500 feet

c. 1,000 feet

 

11. Arriving over the runway 10 knots over Vref would add approximately how many feet to the dry landing distance?

 

a. 800 feet

b. 1,700 feet

c. 2,800 feet

 

12. One typical takeoff error is

 

a. delayed rotation which may extend the climb distance

b. premature rotation which may increase takeoff distance

c. extended rotation which may degrade acceleration

 

13. A landing weight increase of 10% will result in a landing distance increase of approximately

 

a. 7%

b. 10%

c. 15%

 

14. Excessive takeoff speeds may result in approximately a

 

a. 4% takeoff distance increase for each 1% of additional takeoff speed

b. 1% takeoff distance increase for each 2% of additional takeoff speed

c. 2% takeoff distance increase for each 1% of additional takeoff speed

 

15. A landing weight increase of 10% will result in

 

a. 7% increase in kinetic energy

b. 21% increase in kinetic energy

c. 33% increase in kinetic energy

 

16. Aerodynamic braking becomes ineffective

 

a. at speeds less than 60% to 70% of touchdown speed

b. at speeds greater than 60% to 70% of touchdown speed

c. any time after touchdown

 

17. For airplanes with relatively low thrust-to-weight ratios, a 10% increase in takeoff gross weight would result in a takeoff distance increase of approximately

 

a. 14%

b. 23%

c. 25 to 30% or more

 

18. A headwind that is 10% of the landing speed will decrease the landing distance

 

a. 11%

b. 19%

c. 24%

 

19. What should a pilot do to maintain “best range” airplane performance when a tailwind is encountered?

 

a. Increase speed

b. Maintain speed

c. Decrease speed

 

20. Which procedure produces the minimum fuel consumption for a given leg of the cruise flight?

 

a. Increase speed for a headwind

b. Increase speed for a tailwind

c. Increase altitude for a headwind, decrease altitude for a tailwind

 

21. At what speed, with reference to L/DMAX, does maximum range for a jet airplane occur?

 

a. A speed less than that for L/DMAX

b. A speed equal to that for L/DMAX

c. A speed greater than that for L/DMAX

 

22. Maximum range performance of a turbojet aircraft is obtained by which procedure as aircraft weight reduces?

 

a. Increasing speed or altitude

b. Increasing altitude or decreasing speed

c. Increasing speed or decreasing altitude

 

23. The increase in specific range with altitude of the turbojet airplane can be attributed to three factors. One of those factors is

 

a. an increase in altitude in the troposphere results in higher energy air flow

b. an increase in proportion of velocity verses thrust required

c. decreased engine turbine speeds

 

24. The most important factor affecting the specific range of a turbojet airplane is

 

a. altitude

b. the decrease in engine RPM

c. the decrease of the proportion of V/Tr (where V = velocity and Tr = thrust required)

 

25. The specific fuel consumption of a turbojet climbing above the tropopause

 

a. will continue to decrease as altitude increases

b. will remain constant as altitude increases

c. will increase as altitude increases

 

26. The most efficient cruise control in a turbojet is

 

a. Climbing cruise

b. Flight idle cruise

c. Constant altitude cruise

 

27. The specific range for a turbojet at 40,000 feet is approximately

 

a. 150% greater than obtained at sea level

b. 150% greater than obtained at ground level

c. 125% greater than obtained at sea level

 

28. At 3,000 feet with a temperature of 95°F and a calibrated airspeed of 100 knots, your true airspeed is

 

a. 15 knots higher

b. 10 knots higher

c. 5 knots higher

 

29. Under normal operating conditions, which combination of MAP and RPM produce the most severe wear, fatigue, and damage to high performance reciprocating engines?

 

a. High RPM and low MAP

b. Low RPM and high MAP

c. High RPM and high MAP

 

30. Where is the critical altitude of a supercharged reciprocating engine?

 

a. The highest altitude at which a desired manifold pressure can be obtained

b. Highest altitude where the mixture can be leaned to best power ratio

c. The altitude at which maximum allowable BMEP can be obtained