StallSpin Quiz

1
Stall/Spin Quiz

• GLIDING FEDERATION OF AUSTRALIA

2
Stall/spin accidents are most common in which of
the following situations?

• Takeoff and landing
• During high-speed cruise
• Thermalling

• Answer-
• Takeoff and landing

3
Following launch failure in a climb, the pilot's
first action should be to

• Hold climb attitude.
• Locate an emergency landing field.
• Lower the nose to best glide attitude.

• Answer-
• Lower the nose to best glide attitude

4
A glider wing never stalls when

• The angle of attack is less than the stall angle
  of attack.
• The indicated airspeed is above the stall speed.
• The pitch attitude is nose-down.

• Answer-
• The angle of attack is less than the stall angle
  of attack.

5
The indicated airspeed at which a glider will
stall

• Increases with increased altitude.
• Decreases with increased altitude.
• Depends on temperature and humidity as well as
  altitude.
• Does not change with altitude.

• Answer-
• Does not change with altitude.

6
Which of the following statements is false?

• A glider can stall at airspeeds above the
  unaccelerated stall speed.
• A glider can stall at any angle of attack.
• A glider can be in an unstalled condition at
  airspeeds below the stall speed.
• Stall speed increases with increasing load factor.

• Answer-
• A glider can stall at any angle of attack.

7
Incipient spin recovery is made by

• Applying forward stick followed by aileron
  against the spin.
• Applying forward stick.
• Applying full forward stick followed by
  co-ordinated rollout.
• Applying rudder against the rotation followed by
  forward stick.

• Answer-
• Applying forward stick

8
Which of the following characteristics of a spin
is not characteristic of a spiral dive?

• Rapid loss of altitude
• High rate of rotation
• Stalled wing
• Steep nose-down pitch attitude

• Answer-
• Stalled wing

9
Intentional spin entry is made with

• Full nose-up elevator deflection and full rudder
  in the direction of the spin.
• A steep diving spiral.
• Rudder and aileron cross-controlled.

• Answer-
• Rudder and aileron cross-controlled.

10
Spin recovery is made by

• Applying forward stick.
• Applying full forward stick followed by
  co-ordinated rollout.
• Applying forward stick followed by aileron
  against the spin.
• Applying rudder against the rotation followed by
  forward stick.

• Answer-
• Applying rudder against the rotation followed by
  forward stick.

11
An aft centre of gravity location usually

• Makes it easier to enter and more difficult to
  recover from stalls and spins.
• Makes it more difficult to enter and easier to
  recover from stalls and spins.
• Can be moved forward during a spin to assure
  recovery.
• Has little effect on stalls and spins.

• Answer-
• Makes it easier to enter and more difficult to
  recover from stalls and spins.

12
A glider is in a glide at best gliding speed. If
the pilot increases pitch attitude resulting in a
nose-up glide at a reduced indicated airspeed
(say to minimum sink speed), the gliding distance

• Increases.
• Decreases.
• Remains the same.
• May increase or decrease depending on the glider.

• Answer-
• Decreases.

13
Ailerons tend to have reduced effectiveness in
reducing the risk of a spin at high angle of
attack and low airspeed

• Due to high dynamic pressure.
• Because deflecting an aileron may cause it to
  stall.
• Because they are balanced.
• Because they cause yaw in the direction of a turn.

• Answer-
• Because they cause yaw in the direction of a
  turn.

14
Ailerons

• Are effective for spin recovery.
• Act in the normal sense at the high angles of
  attack in a spin.
• Should not be neutralised in a spin.
• Have an effect that is dependent on glider centre
  of gravity position.

• Answer-
• Act in the normal sense at the high angles of
  attack in a spin.

15
From which of these attitudes is the glider pilot
LEAST likely to enter a spin inadvertantly?
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The answer is B. 90 of pilots get this wrong!
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A presentation by
Christopher Thorpe Chief Flying
Instructor Beaufort Gliding Club