Exercise 13 - Spins

Question 1

Stall Theory - Autorotation

Answer 1

• less stalled continues to produce more lift and less drag than the more stalled wing
• inside wing never stops dropping
• aircraft continues to roll and yaw towards the inside wing

Question 2

Spin Theory - Incipient Stage

Answer 2

• Starting stage of a spin
• part from stall until net aircraft flightpath is vertical
• Roughly 2 turns

Question 3

Spin Theory - Fully Developed Stage

Answer 3

• Spin is stable
• Stalled airspeed, Steady VSI, Each turn makes about the same amount of time
• Aircraft will remain in this stage unless something changes

Question 4

Spin Theory - Recovery Stage

Answer 4

• May happen with or without pilot inputs depending on aircraft
• AOA is decreased and anti-spin rudder is used to stop yaw
• Recovery may be instant or gradual

Question 5

Spin Entry Procedure

Answer 5

• HASEL check
• Enter a stall
• Just before stall, apply full up elevator and full rudder in the direction of the spin
• Hold inputs until aircraft enters a spin
• Power idle

Question 6

Spin Recovery Procedure

Answer 6

• Neutralize ailerons
• Power to idle
• Apply and hold full opposite rudder
• Control Column briskly forward, far enough to break the stall
• Hold inputs until rotation stops
• neutralize rudder and recover from dive when rotation stops
• return to cruise

Question 7

Factors Affecting Spins - Power

Answer 7

• Power increases yaw factors
• Power raises the nose, flattening a spin

Question 8

Factors Affecting Spins - Weight and Balance

Answer 8

• Harder for heavier aircraft to get spinning, longer recovery
• Forward C of G typically required for intentional spins
• Spins not guaranteed to be recoverable outside of approved spin limitations

Question 9

Factors Affecting Spins - Altitude

Answer 9

• Higher altitude results in longer spin recovery times

Question 10

Factors Affecting Spins - Airframe

Answer 10

• Spin characteristics vary from aircraft to aircraft