Ae106 Stalls Flashcards

1
Q

What force opposes and controls the adverse pressure gradient?

A

The kinetic energy of the relative wind

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2
Q

What is the definition of boundary layer separation?

A

Point in the streamline where airflow no longer adheres to the airfoil

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3
Q

What is the point of stall on a C curve?

A

CLMAX

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4
Q

What is the definition of a stall?

A

Condition in flight where increase in AOA results in decrease in CL

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5
Q

What is the key difference between an aircraft’s stall AOA and stall airspeed?

A

Stall AOA remains constant – stall airspeed is variable

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6
Q

What are the factors associated with increased thrust that impact stall characteristics?

A

Vertical thrust component and propeller acceleration factor

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7
Q

What are the two major classifications of stalls?

A

Power-on stall and power-off stall

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8
Q

Which type of stall will have the lowest stall airspeed?

A

Power-on stall

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9
Q

Which flight control would you normally expect to be least effective during a stall/stall recovery?

A

Ailerons

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10
Q

Which aircraft would stall at a higher indicated airspeed? 4300 pound gross weight or 5800?

A

5800 pound aircraft

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11
Q

Which aircraft would stall at a higher true airspeed? 6000ft or 12300ft MSL?

A

Aircraft at 12,300 MSL

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12
Q

How do you think increased G loading will affect stall airspeed?

A

Stall airspeed increases

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13
Q

If maintaining level flight, what happens to stall airspeed as you increase bank angle?

A

Stall airspeed increases because of the increase in load factor needed to maintain level flight

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14
Q

What is the effect of increased weight on stall airspeed?

A

Stall airspeed will increase

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15
Q

Higher G loading and higher bank angle = ______ stall airspeed.

A

higher

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16
Q

What is the basic function of a boundary layer control (BLC) device?

A

To suppress boundary layer separation

17
Q

What is the T-6A stall AOA?

A

18 units

18
Q

What is the primary artificial stall warning in the T-6A?

A

Stick shaker

19
Q

What does activation of the stick shaker indicate?

A

Aircraft is approximately 5 to10 knots above stall speed

20
Q

What is the definition of boundary layer separation?

A

Point in streamline where airflow no longer adheres to the airfoil

21
Q

What effect does increasing AOA have on the kinetic energy of the relative wind?

A

Decreases it

22
Q

What is the definition of a stall?

A

Condition in flight where increase in AOA results in decrease in CL

23
Q

What are the two major classifications of stalls?

A

Power-on stall and power-off stall

24
Q

What are the factors associated with increased thrust that impact stall characteristics?

A

Vertical component of thrust and propeller acceleration factor

25
Q

What are the benefits provided by Boundary Layer Control (BLC) devices?

A

Increased maneuvering capabilities, Decreased landing speed and distance

26
Q

Which type of stall will have the lower stall airspeed?

A

Power-on stall

27
Q

What is the T-6A stall AOA?

A

18 units

28
Q

What is the only reason the T-6A will stall?

A

Exceeding T-6A stall AOA (18 units)

29
Q

Describe laminar airflow.

A

Area of the boundary layer where air molecules flow smoothly within the streamline