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27 Cards in this Set
- Front
- Back
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load factor
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lift over weight
or 1 over cos* AOB |
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lift
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CL 1/2 pV*2 S
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cff =
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mv*2 / r
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power =
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work / time
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work =
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force x distnace
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kinetic energy =
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1/2 MV*2
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potnetial energy =
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mgh
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ISA pressure =
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1013 hPa or 29.92 in Hg
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ISA pressure Decrease =
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1 hPa / 30feet
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ISA temperature =
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+ 15 degrees C
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ISA temperature Decrease =
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1.98 degree / 1000feet
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ISA air density =
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1.225 kg/m*3
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ISA density decrease =
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120 feet / 1 degree
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Lift (in stall)
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1/2 PV*2
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approaching the stall
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life is constant
IAS is decreasing AOA incrasing coefficient of lift increasing |
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systoms of approaching a stall
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high nose attitudelow and decreasing airspeed
controls life / less effective aural stall warning the buffet (airflow breaks away from the aerofoil) |
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factors effecting stall speed
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weight
flaps power loading icing or damage |
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wind drop stalls
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weight imbalance
ice or damage turbulence rigging power/slipstream pilot induced |
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spin recovery
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close throttle
confirm spin direction full opposite rudder -stop yaw pause forward elevator neutralise rudeer when rotation stops ease out of dive |
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Drag formular
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D=Cd (1/2pv*2) S
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drag tree
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parasite drag, induced
cooling profile intereence form skin |
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induced drag formular
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Cid = CL*2 / pi AR
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factors affecting induced drag
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AOA
airspeed aspect ratio |
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aspect ratio
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is the wingspan to chord ratio
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longitudinal stability
lateral stability normal stability |
lateral axis (pitch)
longitudinal axis (roll) normal axis (yaw) |
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factors affecting swing on take-off
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slipstream
torque crosswind gyoscopic effect assymetrice blade effect |
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factors affecting the glid
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weight
saame AOA flaps power wind |
