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Flashcards in Modifying Lift And Drag Deck (19)
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1
Q

List 3 devices used to modify lift and drag

A

Trailing edge

Leading edge

Spoiler/airbreaks

2
Q

Name a trailing edge device?

A

A flap

3
Q

What is a flap?

A

A retractable mechanical device fitted to the edge trailing/leading of the wing

4
Q

What happens when you lower a flap?

A

The wings curvature increases, increasing the camber. Increases lift.

5
Q

Do flaps increase drag?

A

Yes

6
Q

What are the benefits of flaps?

A

Increases drag at lower speeds.

Decreases landing roll as flying at a slower speed.

7
Q

List a few different types of flaps

A
  • Plain flap
  • Blown flap
  • Split flap
  • Fowler flap
  • Double slotted flap
  • Hawker Sidney trident lift augmentation System
  • Boeing 727 loft augmentation System
8
Q

Leading edge devices (such as flaps) decrease the angle of attack (AoA) by how many degrees?

A

12 degrees or less (average 15 degrees)

9
Q

What are leading edge slots?

A

Fixed aerodynamic devices on the main planes.

10
Q

Slats/Slots increase the angle of attack by how many degrees? In turn increasing?

A

Increase the angle of attack to about 20 degrees. Can generate more lift.

11
Q

What effects do the slats/slots have on the nose of the aircraft?

A

Pitches the nose of the aircraft upwards

12
Q

List the 3 types of slots/slats

A

Fixed slot
Moveable slat
Leading edge flap

13
Q

What are spoilers?

A

Small hinged plates in the top portion of wings

14
Q

What do spoilers do?

A

Disrupt the airflow to increase drag and decrease lift

15
Q

Can spoilers be used to generate rolling motion if deployed on one wing?

A

Yes

16
Q

With the use of slats and flaps the aircraft can approach at a steeper angle. True or False?

A

True

17
Q

If an aircraft doesn’t use slats or spoilers what will the aircraft do?

A

Approach at a shallower angle

Land at a higher speed

18
Q

What are the problems associated with landing fast? (List all 5)

A

Overheating of breaks/less breaking action

Possible break fire

Possible tire bursts

Possible runway over-run

All of the above

19
Q

What are the problems encountered with taking off without flaps

A

Shallow take-off angle

Slow rate of climb

Premature Retraction

Full stall close to the ground