Stalling And Spinning Flashcards
stalling occurs when an aerofoil reaches its ___
critical angle
(increasing/reducing) airspeed is a sign of a stall
reducing
(increasing/reducing) control effectiveness is a warning sign of a stall
reducing
the turbulence which impacts the aft of a fuselage/tail unit is called:
buffet or judder
a significant reduction in CL (is/is not) a warning sign of a stall
is
in a stall, separation point moves (forward/back) rapidly
forward
high speed aerofoils are susceptible to a stall at a (higher/lower) nose angle
lower
to recover from a stall
pitch the nose down to create airflow over the wings again
how does weight affect stall speed?
stall speed increases with an increase in weight
whats the equation for stall speed changed by weight?
new stall speed = basic stall speed x (square root of the new weight over the old weight)
higher load factor means (in regards to stall speed)
higher stall speed
stall speed (increases/decreases) with an increase in altitude
increases
the use of power in the approach to a stall (increases/reduces) stall speed
reduces
lowering the flap (increases/reduces) stall speed and (increases/reduces) geometric AoA
reduces, reduces
slats reduce stall speed and increase AoA, true or false?
true
contamination of the wing surface (increases/reduces) stall speed
increases
what is a wing drop stall?
a stall where one wing reaches stall before the other, resulting in one wing dropping and an inherent yaw/roll of the aircraft
the ise of aileron during a stall leads to ___
autorotation
a wing drop stall is sometimes referred to as a
fully developed stall
recovery from a wing drop stall:
- stick centrally forward
- rudder to prevent further
- full power
- ailerons to roll the wings level
- raise the nose
- centralise rudder
recovery at the onset of a stall:
- 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
which axes is the aircraft in motion around in a spin?
all three - yawing, rolling, and pitching
in a spin, in addition to the axes its in motion around, the aircraft is also:
stalled, slipping, and rapidly losing altitude
___ is the basis of a spin
autorotation
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
inconsistent, will
the more deep the wing stall is, the (flatter/deeper) the spin will be
flatter
a rearward CoG in a spin will encourage a ___ spin, making it (easier/harder) to lower the nose and recover
flatter, harder
the two instrument indications most reliable to confirm a spin are:
a low but fluctuating airspeed, and the turn indicator indicating the direction of the spin
spin recovery:
- 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
recovery from a spiral dive:
- close throttle
- roll wings level with ailerons
- ease out of dive
