HIGH LIFT DEVICES – Air – DGCA Question Bank For Politics

#1. What is the effect of deploying trailing edge flaps?

Increases CL and Vs

Decreases CL and Vs

Increases CL and decreases Vs

Decreases CL and increases Vs

#2. What is the effect of deploying leading edge slats?

Energising boundary layer and increasing Vs

De-energising boundary layer and decreasing Vs

Energising boundary layer and decreasing Vs

De-energising boundary layer and increasing Vs

#3. What is the effect on wing pitching moment, of deploying trailing edge flaps prior to landing?

Increased nose down pitching moment.

Decreased nose down pitching moment.

Nose up pitching moment replaced by a nose down pitching moments.

Increased nose up pitching moment.

#4. What effect does deployment of trailing edge flaps have on stalling angle of attack?

No change.

Increased stalling angle.

Decreased stalling angle.

Increased or decreased stalling angle depending on wing sweep angle.

#5. What is the effect of deployment of leading edge flaps in conjunction with trailing edge flaps?

Moves C of P aft increasing nose down pitching moment caused by trailing edge flaps.

Moves C of P forward reducing nose down pitching moment caused by trailing edge flaps.

Moves C of G aft increasing nose down pitching moment caused by trailing edge flaps.

Moves C of G fonvard reducing nose down pitching moment caused by trailing edge flaps.

#6. What configuration of krueger flaps and slats would produce the best post-stall handling characteristics in a swept wing aircraft?

Slats inboard and Krueger flaps outboard.

Full span slats.

Full span Krueger flaps.

Kruger flaps inboard and slats outboard.

#7. What trailing edge flap angle will give the minimum stalling speed?

Maximum deflection.

Zero degrees.

20 degrees.

30 degrees.

#8. What trailing edge flap angle will give best L : D ratio?

Zero angle.

Maximum angle.

20 degrees.

30 degrees.

#9. What will be the effect of deploying triple slotted fowler flaps to maximum deflection?

L:D ratio, wing area, camber, stalling angle, stalling speed and angle of incidence will all increase.

L:D ratio, wing area, camber, stalling angle, stalling speed and angle.of incidence will all decrease.

L:D ratio, wing area, camber and stalling angle will increase but stalling speed and angle of incidence will decrease.

Wing area, camber and angle of incidence will increase but stalling angle, stalling speed and L:D ratio all decrease.

#10. What effect does the deployment of trailing edge flaps have on airflow over the tailplane?

The design of modern aircraft is such that deployment of trailing edge flaps has no effect on airflow over the tailplane.

Downwash is increased decreasing the effectiveness of the tailplane.

Downwash is increased increasing the effectiveness of the tailplane.

Downwash is decreased decreasing the effectiveness of the tailplane.

#11. What effect does the deployment of trailing edge flaps have on the intensity of wingtip vortices?

Decrease.

Increase.

Decrease or increase depending on airspeed.

Decrease or increase depending on aircraft weight.

#12. Why is it necessary to ensure that trailing edge flaps are deployed symmetrically?

To maintain C of G within limits.

To maintain C of P within limits.

To maintain lateral and directional control.

To maintain longitudinal control.

#13. What is the purpose of the slots in slotted flaps and how do they achieve this purpose?

Reduce drag by allowing aii- to flow through the flaps.

Reduce nose down pitching moment by moving C of P forward.

Increase stalling speed by energising boundary layer over the upper surfaces of the flaps.

Reduce stalling speed and increase stalling angle by energising boundary layer over the flaps.

#14. Complete the following statement. As trailing edge flaps move from fully retracted to fully deployed, both lift and drag increase. Most of the additional drag is produced during the ..........o f deployment whilst most of the additional lift is produced during the ...... The additional drag produced by the first half of the deployment is mainly ....... Whilst that produced during the second half is mainly ..... .... 1. First half 2. Induced 3. Profile 4. Second half F

4, 2, 1, 3.

4, 1, 2, 3.

3, 1, 2, 4.

1, 4, 3, 2.

#15. Deployment of trailing edge flaps in straight and level flight will .............. induced drag?

Not affect.

Decrease.

Increase.

Increase or decrease depending on flap angle selected.

#16. Deployment of inboard trailing edge flaps will.. . . . ... wing tip vortices?.

Decrease.

Not affect.

Increase

Increase or decrease depending on flap angle.

#17. Which of the following will reduce L:D ratio most?

30° trailing edge flap.

15° trailing edge flap.

45° trailing edge flap.

15° slat.

#18. What is the purpose of drooping ailerons?

To increase lift.

To prevent adverse yaw.

To maintain stability.

To increase roll rate.

#19. A split flap is ........ compared to a plain flap?

More efficient.

Less efficient.

As efficient.

More or less efficient depending on weight.

#20. Deployment of flaps in turbulence will ....................?

Increase stalling speed 2nd risk of exceeding limiting load factor.

Decrease s&lling speed and risk of exceeding limiting load factor.

Increase stalling speed and decrease risk of exceeding limiting load factor.

Decrease stalling speed and increase risk of exceeding limiting load factor.

#21. Deployment of leading edge slats ..........?

De-energises boundary layer and moves C of P aft.

De-energises boundary layer and moves C of P forward.

Energises boundary layer and moves C of P aft.

Energises boundary layer and moves C of P forward.

#22. Deployment of fowler flaps. ...........?

Increases wing area only.

Increases angle of incidence only.

Increases angle of incidence and wing area only.

Increases camber.

#23. Deployment of flaps ....... CL?

Increases.

Decreases.

Increases then decreases.

Decreases then increases.

#24. The first few degrees of flap deployment will.. ...... ..L:D ratio?

Decrease.

Increase.

Increase or decrease depending on speed.

Not affect.

#25. Full span Krueger flaps will. .........l ateral stability?

Improve.

Degrade.

Not affect.

Improve or degrade depending on angle.

#26. Split flaps?

Lower the underside of the trailing edge.

Lower the trailing edge.

Lower the leading edge.

Increases wing area.

#27. Deployment of trailing edge flaps.. ...... stalling angle and ...... CLmax?

Increases, Increase.

Increases, Decreases.

Decreases, Decreases.

Decreases, Increases.

#28. The purpose of leading edge slats is to ............ ?.

Decreases stalling angle.

Increase stalling angle.

Increase stalling speed.

Create turbulent boundary layer.

#29. Limiting load factor for a JAR certificated passenger aircraft with flaps deployed is ....?

2.0

2.5.

3.0.

3.5.

#30. Maximum speed for extending flaps is .....?

V_FE

V_FO

V_F

V_D

#31. Maximum speed with extended flaps is.. ... ?

VFE

VFO

VF

VD

#32. Deploying trailing edge flaps.. . . .. . . . .. tailplane down force?

Decreases.

Does not affect.

Increases.

Increases or decreases depending on weight.

#33. Deployment of flaps in icing conditions might.. ...... ?

Increase stalling angle.

Cause stalling.

Prevent flutter.

Increase rate of climb.

#34. Raising slats too soon after take-off might ........?

Increase stalling angle.

Cause stalling.

Prevent flutter.

Increase rate of climb.

#35. Trailing edge flaps ............ landing attitude?

Increase.

Decrease.

Do not affect.

Increase or decrease depending on flap type.

#36. Leading edge flaps ............ landing attitude?

Increase.

Decrease.

Do not affect.

Increase or decrease depending on flap type.

#37. Trailing edge flaps.. ......... .stalling angle?

Increase.

Decrease.

Do not affect.

Increase or decrease depending on flap type.

#38. Leading edge slats ............ stalling angle?

Increase.

Decrease.

Do not affect.

Increase or decrease depending on weight.

#39. Leading edge flaps ............ stalling angle?

Increase.

Decrease.

Do not affect.

Increase or decrease depending on flap type.

#40. Krueger flaps are ...... efficient than leading edge droop?

Less.

More.

No more nor less.

More or less depending on angle of attack.

#41. Blown flaps. ....... ..boundary layer and. .......stalling speed?

Energise, Increase.

Energise, Decrease.

De-energise, Increase.

De-energise, Decrease.

#42. Slotted flaps .......... boundary layer and ........ stalling speed?

Energise, Increase.

Energise, Decrease.

De-energise, Increase.

De-energise, Decrease.

#43. Flap blowing ..........?

Energises boundary layer and increases angle of incidence.

Energises boundary layer and decreases angle of incidence.

Requires more engine power

Improves SFC.

#44. Asymmetric flap deployment.. .......?

Improves lift performance.

Is used to prevent asymmetric yaw.

Causes loss of control.

Is not possible.

#45. Flap deployment improves CL most ..........?

During the first few degrees.

During the last few decrees.

At high subsonic speeds.

During the take-off roll.

#46. Flap deployment.. ....... .downwash over the tailplane?

Decreases.

Increases.

Does not affect.

Increases or decreases depending on angle.

#47. Fowler flaps are ........... than split flaps?

Less complex.

Less effective.

Lighter.

Slower.

#48. Failure of trailing edge flaps to deploy on landing will?

Decrease landing speed.

Decrease landing roll.

Increase nose up attitude.

Increase angle of attack.

#49. Trailing edge flaps ........... the CL:a curve.

Extend.

Shorten.

Flatten.

Do not affect.

#50. Leading edge slats ........... the C L :a curve

Extend

Shorten.

Flatten

Do not affect.

#51. Fowler flaps ...........t he CL:a curve.

Straighten

Shorten

Extends.

Do not affect

#52. The diagram below includes

Double slotted plain flaps.

Leading edge flaps

Double slotted split flaps.

Double slotted fowler flaps

#53. The diagram below includes?

Blown flap and slat.

Plain flap and leading edge flap.

Slat and slotted split flap.

Slat and fowler flap.

#54. The diagram below includes?

Slats.

Leading edge flap

Kruger flap

Double slotted split flaps.

#55. The diagram below includes?

Kruger flap.

Leading edge slat.

Leading edge droop.

Drooped slat and plain flap.

#56. The diagram below includes?

Double slotted plain flaps.

Leading edge flaps.

Split flap.

Double slotted fowler flaps.

#57. The diagram below includes?

Drooped leading edge and plain flap.

Leading edge flap.

Double slotted split flaps.

Slat and plain flap.

#58. Pitch up on flap deployment is ........ ?

Due to downwash over tailplane.

Not possible.

Due to aft movement of C of P.

Due to forward movement of C of P.

#59. Retracting trailing edge flaps whilst leaving slats deployed in a climb will ....?

Reduce drag.

Reduce lift, drag and L:D ratio.

Increase lift and reduce drag.

Reduce lift and drag and increase L:D ratio.

#60. Retraction of slats prior to flaps might ........?

lncrease L:D ratio.

Increase stalling angle.

Reduce stalling speed.

Cause stall.

#61. Flap deployment causes pitch up due to ........?

Decreased upwash.

Increased upwash.

Decreased downwash.

Increased downwash.

#62. Using slats to oppose the nose down moment caused by flap deployment ........stalling speed compared to using the tailplane for the same purpose?

Increases.

Decreases.

Increases or decreases depending on C of G position.

Does not affect.

#63. Flap asymmetry causes ...... ?

Roll.

Roll and yaw.

Roll, pitch and yaw.

None of the above.

#64. Trailing edge flap deployment ..... ?

Increases stalling speed and stalling angle of attack.

Decreases stalling speed and angle of incidence.

Decreases stalling speed and stalling angle of attack,

Improves stability.

#65. Blown flaps ..... ?

Increase lift and decrease thrust.

Increase lift and increase thrust.

Decrease lift and increase thrust.

Decrease lift and decrease thrust.

#66. Spoiler deployment ...... ?

Increases L:D ratio.

Decreases L:D ratio.

Decreases separation over flaps.

Is not possible with flaps deployed.

#67. Deployment of trailing edge flaps .... ?

Never improves L:D ratio.

Always improves L:D ratio.

Sometimes improves L:D ratio.

Improves or reduces L:D ratio depending on C of G position.

#68. Trailing edge flap deployment .... ?

Move C of P aft.

Moves C of G forward.

Moves C of G aft.

Does not affect position of C of G or C of P.

#69. Leading edge flap deployment . . . ?

Move C of P aft.

Moves C of G forward.

Moves C of P forward.

Does not affect position of C of G or C of P.

#70. Leading edge flaps .... ?

Increase camber and angle of incidence.

Decrease camber and angle of incidence.

Increase camber and decrease angle of incidence.

Decrease camber and increase angle of incidence.

#71. Flap deployment . . . .. ?

Increases upwash and downwash.

Decreases upwash and downwash

lncreases upwash and decreases downwash.

Decreases upwash and decreases downwash.

#72. Flap deployment ...... Dp and ...... Dl?

Increases, Increases.

Increases, Decreases.

Decreases, Decreases.

Decreases, Increases.

#73. Wing area and camber are increased by deployment of .... Flaps?

Plain

Split

Fowler

Slotted

#74. Split flaps are ..... than plain flaps?

Heavier.

Lighter.

More efficient.

Less efficient.

#75. Deployed flaps in a JAR certificated passenger aircraft must be capable of withstanding . . . .. . without permanent deformation?

1 g.

2 g.

2.5 g.

3.8 g.

#76. With trailing edge flaps deployed the stick shaker will activate at ....... angle of attack compared with the clean configuration?

A higher.

A lower.

A higher or lower depending on airspeed.

The same.

#77. Landing configuration is usually ........ ?

Slats and flaps fully deployed.

Slats only deployed.

Flaps only deployed.

Slats fully deployed and flaps at minimum deflection angle.

#78. Flap deployment ..... the landing run?

Increases.

Decreases.

Does not affect.

Increases or decreases depending on landing speed.

#79. Flap deployment . . ... the take-off run?

Increases

Decreases.

Does not affect.

Increases or decreases depending on deployment angle.

#80. Trailing edge flap deployment ..... pitch attitude required in take-off and landing?

Increases.

Decreases.

Does not affect.

Increases or decreases depending on weight.

#81. Trailing edge flap deployment might cause nose down pitching due to . . . . . . ?

Downwash over the tailplane.

Upwash over the tailplane.

Forward movement of the C of P.

Aft movement of the C of P.

#82. Trailing edge flap deployment . . . . . . . . . power required?

Increases.

Decreases.

Does not affect.

Increases or decreases depending on C of G position.

#83. With stabiliser trim stuck in cruise position deployment of landing flap will ......... ?

Increase stick forces in the flare.

Decrease stick forces in the flare.

Decrease nose down control authority.

Reduce trim drag.

#84. Deployment of flaps ......... ?

Increases longitudinal stability.

Decreases longitudinal stability.

Decreases lateral stability.

Increases lateral stability.

#85. Use of flaperons in take-off will .. ... ?

Reduce roll authority.

Increase roll authority.

Not affect roll authority.

Reduce trim drag.

#86. Use of small angles of flap deflection .... ?

Increases Dl more than Dp.

Increases Dp more than Dl.

Reduces Dl and increases Dp.

Increases DI and reduces Dp

#87. Trailing edge flap deployment . . .. ?

Increases stalling angle.

Decreases stalling angle.

Does not affect stalling angle.

Increases or decreases stalling angle depending on C of G position.

#88. Full span Krueger flaps .... ?

Encourage root stall.

Encourage tip stall.

Decrease stalling angle.

Increase stalling attitude.

#89. Use of outboard Krueger flaps alone would . . . . . . ?

Increase tip stall tendency.

Decrease tip stall tendency.

Not affect tip stall tendency.

Decrease wing root bending.

#90. Premature slat retraction in climb out might .... ?

Cause stall.

Cause high speed buffet.

Increase rate of climb.

Decrease trim drag.

#91. Split flaps .... ?

Move upwards and downwards to act as airbrakes.

Are divided into sections to provide individual control.

Reduce flutter.

Are less prone to separation than plain flaps.

#92. Maximum flap deployment speed is .... ?

VFE

VNF

VFO

VF

#93. Full flap deployment in take-off will ..... ?

Increase climb performance.

Increase take-off distance required.

Increase acceleration rate.

Increase climb gradient.

#94. Full flap deployment in landing will ..... ?

Require a shallower approach.

Permit a steeper approach.

Increase landing speed.

Increase landing run.

#95. ......... flaps offer the greatest increase in CL MAX?

Plain.

Split.

Fowler.

Slotted fowler.

#96. Blown flaps . . .. ?

Increase power available.

Decrease power required.

Increase rate of climb.

Decrease power available.

#97. Spoiler deployment .. ... .. The CL : a slope and ... ... a stall?

Incl-eases Increases.

Decreases Decreases.

Decreases Increases.

Increases Decreases.

#98. Slat deployment ... ... ... the gradient of the CL : a curve?

Does not affect.

Increases.

Decreases.

Increase or decreases depending on airspeed.

#99. Slat deployment ....... a stall and trailing edge flap deployment ...... it?

Decreases Decreases.

Decreases Increases.

Increases Increases.

Increases Decrease.

#100. Stall angle is typically ... degrees with plain flaps and ... degrees with split flaps?

14 10.

12 10.

12 14.

12 25.

Dgca Question Bank For Pilots

Results

#1. What is the effect of deploying trailing edge flaps?

#2. What is the effect of deploying leading edge slats?

#3. What is the effect on wing pitching moment, of deploying trailing edge flaps prior to landing?

#4. What effect does deployment of trailing edge flaps have on stalling angle of attack?

#5. What is the effect of deployment of leading edge flaps in conjunction with trailing edge flaps?

#6. What configuration of krueger flaps and slats would produce the best post-stall handling characteristics in a swept wing aircraft?

#7. What trailing edge flap angle will give the minimum stalling speed?

#8. What trailing edge flap angle will give best L : D ratio?

#9. What will be the effect of deploying triple slotted fowler flaps to maximum deflection?

#10. What effect does the deployment of trailing edge flaps have on airflow over the tailplane?

#11. What effect does the deployment of trailing edge flaps have on the intensity of wingtip vortices?

#12. Why is it necessary to ensure that trailing edge flaps are deployed symmetrically?

#13. What is the purpose of the slots in slotted flaps and how do they achieve this purpose?

#15. Deployment of trailing edge flaps in straight and level flight will .............. induced drag?

#16. Deployment of inboard trailing edge flaps will.. . . . ... wing tip vortices?.

#17. Which of the following will reduce L:D ratio most?

#18. What is the purpose of drooping ailerons?

#19. A split flap is ........ compared to a plain flap?

#20. Deployment of flaps in turbulence will ....................?

#21. Deployment of leading edge slats ..........?

#22. Deployment of fowler flaps. ...........?

#23. Deployment of flaps ....... CL?

#24. The first few degrees of flap deployment will.. ...... ..L:D ratio?

#25. Full span Krueger flaps will. .........l ateral stability?

#26. Split flaps?

#27. Deployment of trailing edge flaps.. ...... stalling angle and ...... CLmax?

#28. The purpose of leading edge slats is to ............ ?.

#29. Limiting load factor for a JAR certificated passenger aircraft with flaps deployed is ....?

#30. Maximum speed for extending flaps is .....?

#31. Maximum speed with extended flaps is.. ... ?

#32. Deploying trailing edge flaps.. . . .. . . . .. tailplane down force?

#33. Deployment of flaps in icing conditions might.. ...... ?

#34. Raising slats too soon after take-off might ........?

#35. Trailing edge flaps ............ landing attitude?

#36. Leading edge flaps ............ landing attitude?

#37. Trailing edge flaps.. ......... .stalling angle?

#38. Leading edge slats ............ stalling angle?

#39. Leading edge flaps ............ stalling angle?

#40. Krueger flaps are ...... efficient than leading edge droop?

#41. Blown flaps. ....... ..boundary layer and. .......stalling speed?

#42. Slotted flaps .......... boundary layer and ........ stalling speed?

#43. Flap blowing ..........?

#44. Asymmetric flap deployment.. .......?

#45. Flap deployment improves CL most ..........?

#46. Flap deployment.. ....... .downwash over the tailplane?

#47. Fowler flaps are ........... than split flaps?

#48. Failure of trailing edge flaps to deploy on landing will?

#49. Trailing edge flaps ........... the CL:a curve.

#50. Leading edge slats ........... the C L :a curve

#51. Fowler flaps ...........t he CL:a curve.

#52. The diagram below includes

#53. The diagram below includes?

#54. The diagram below includes?

#55. The diagram below includes?

#56. The diagram below includes?

#57. The diagram below includes?

#58. Pitch up on flap deployment is ........ ?

#59. Retracting trailing edge flaps whilst leaving slats deployed in a climb will ....?

#60. Retraction of slats prior to flaps might ........?

#61. Flap deployment causes pitch up due to ........?

#62. Using slats to oppose the nose down moment caused by flap deployment ........stalling speed compared to using the tailplane for the same purpose?

#63. Flap asymmetry causes ...... ?

#64. Trailing edge flap deployment ..... ?

#65. Blown flaps ..... ?

#66. Spoiler deployment ...... ?

#67. Deployment of trailing edge flaps .... ?

#68. Trailing edge flap deployment .... ?

#69. Leading edge flap deployment . . . ?

#70. Leading edge flaps .... ?

#71. Flap deployment . . . .. ?

#72. Flap deployment ...... Dp and ...... Dl?

#73. Wing area and camber are increased by deployment of .... Flaps?

#74. Split flaps are ..... than plain flaps?

#75. Deployed flaps in a JAR certificated passenger aircraft must be capable of withstanding . . . .. . without permanent deformation?

#76. With trailing edge flaps deployed the stick shaker will activate at ....... angle of attack compared with the clean configuration?

#77. Landing configuration is usually ........ ?

#78. Flap deployment ..... the landing run?

#79. Flap deployment . . ... the take-off run?