Aerodynamics Flashcards
Angle of attack
Cord line and relative wind
Lower pressure on top of wing
Higher pressure on the bottom
Critical angle of attack
Stall when exceeding this attack
Loss of lift over wings
Angle of incidence
Angle between cord line and longitudinal axis
the wing root to stall first
Closer towards fuselage
Forward CG
Requires higher angle of attack to maintain climb
There is more back pressure needed
Stall recovery is easier
Slower due to drag higher fuel burn
Aft CG
Lower stall speed
Angle of attack is lower
Less back pressure
Difficult to recover from stall
Faster cruise speed and burns less fuel
Load factor
Weight that the windshield
(Measured and G’s)
More G’s you pull higher load factor is
Look factor increases, stall speed increases
(Easier to stall)
Get out of a stall
Lower nose below critical angle of attack
increase power to increase altitude
Left turning tendencies
Result of thrust
Ends of propeller are faster
twist in propeller is to put equal amount of thrust along entire blade
torque affect
Propeller moves to the right
plane Moves to the left
Spiraling slip stream
When moves run the airplane
pushing the left vertical stabilizer
P factor
Airplane at higher angle of attack
descending blade produces more thrust compared to ascending blade
Gyroscopic procession
Force applied to the Gyro is felt 90° in ahead of rotation
Parasyte drag
Increases as airspeed decreases
Form drag
Shape of airplane
Interference drag
Intersection of airstreams
