Stalling And Spinning

Question 1

stalling occurs when an aerofoil reaches its ___

Answer 1

critical angle

Question 2

(increasing/reducing) airspeed is a sign of a stall

Answer 2

reducing

Question 3

(increasing/reducing) control effectiveness is a warning sign of a stall

Answer 3

reducing

Question 4

the turbulence which impacts the aft of a fuselage/tail unit is called:

Answer 4

buffet or judder

Question 5

a significant reduction in CL (is/is not) a warning sign of a stall

Answer 5

is

Question 6

in a stall, separation point moves (forward/back) rapidly

Answer 6

forward

Question 7

high speed aerofoils are susceptible to a stall at a (higher/lower) nose angle

Answer 7

lower

Question 8

to recover from a stall

Answer 8

pitch the nose down to create airflow over the wings again

Question 9

how does weight affect stall speed?

Answer 9

stall speed increases with an increase in weight

Question 10

whats the equation for stall speed changed by weight?

Answer 10

new stall speed = basic stall speed x (square root of the new weight over the old weight)

Question 11

higher load factor means (in regards to stall speed)

Answer 11

higher stall speed

Question 12

stall speed (increases/decreases) with an increase in altitude

Answer 12

increases

Question 13

the use of power in the approach to a stall (increases/reduces) stall speed

Answer 13

reduces

Question 14

lowering the flap (increases/reduces) stall speed and (increases/reduces) geometric AoA

Answer 14

reduces, reduces

Question 15

slats reduce stall speed and increase AoA, true or false?

Answer 15

true

Question 16

contamination of the wing surface (increases/reduces) stall speed

Answer 16

increases

Question 17

what is a wing drop stall?

Answer 17

a stall where one wing reaches stall before the other, resulting in one wing dropping and an inherent yaw/roll of the aircraft

Question 18

the ise of aileron during a stall leads to ___

Answer 18

autorotation

Question 19

a wing drop stall is sometimes referred to as a

Answer 19

fully developed stall

Question 20

recovery from a wing drop stall:

Answer 20

• stick centrally forward
• rudder to prevent further
• full power
• ailerons to roll the wings level
• raise the nose
• centralise rudder

Question 21

recovery at the onset of a stall:

Answer 21

• full power
• stopping roll and yaw
• lower the nose attitude to slightly above the horizon
• when airspeed shows an incr, raise flaps (if lowered) and return aircraft to level flight

Question 22

which axes is the aircraft in motion around in a spin?

Answer 22

all three - yawing, rolling, and pitching

Question 23

in a spin, in addition to the axes its in motion around, the aircraft is also:

Answer 23

stalled, slipping, and rapidly losing altitude

Question 24

___ is the basis of a spin

Answer 24

autorotation

Question 25

the first one or two turns of a spin, rolling and yawing will be (consistent/inconsistent), and the airframe (will/will not) be subject to buffeting

Answer 25

inconsistent, will

Question 26

the more deep the wing stall is, the (flatter/deeper) the spin will be

Answer 26

flatter

Question 27

a rearward CoG in a spin will encourage a ___ spin, making it (easier/harder) to lower the nose and recover

Answer 27

flatter, harder

Question 28

the two instrument indications most reliable to confirm a spin are:

Answer 28

a low but fluctuating airspeed, and the turn indicator indicating the direction of the spin

Question 29

spin recovery:

Answer 29

• throttle closed and flaps up
• full opposite rudder
• pause
• ease the control column to the centre
• centralise rudder, level wings, ease out of the dive

Question 30

recovery from a spiral dive:

Answer 30

• close throttle
• roll wings level with ailerons
• ease out of dive