Spins Flashcards
Can an aircraft that is not stalled be in a spin?
No. Both stall and yaw must be present to spin
Define poststall gyration
Aerodynamic forces during stall that result in movement around the pitch, roll, and yaw axes
What is the key factor affecting the intensity of poststall gyrations?
The airspeed at the time of stall
What is the definition of Angle of Attack (AOA)?
Angle between the chordline and the relative wind
In a spin, which wing will have the higher AOA, up-going or down-going wing?
Down-going (inside) wing
What is the cause of autorotation in a spin?
Unequal lift and drag forces acting on each wing
How does anti-spin rudder aid in recovery?
Slows rotation and decreases AOA
Would an aircraft spinning with the stick other than full aft be in an accelerated or unaccelerated spin?
Anytime the aircraft is spinning with the stick other than full aft, the spin is accelerated
Higher pitch attitude at stall results in ________ spin entry and __________ oscillations.
Slower; less
Will a left or right spin stabilize at a lower pitch attitude?
Right
What causes the variance in left and right spin characteristics?
Gyroscopic effect of the propeller
What two conditions must be present in order for an aircraft to spin?
Stall and yaw
How does the introduction of yaw affect the lift and drag of a stalled wing?
Causes asymmetrical lift and drag between the outside and inside wing
What conditions must be present to enter an inverted spin?
Negative G stall and yaw introduced
What is the main aerodynamic factor affecting spins?
Conservation of angular momentum
