What statement about aerodynamic conditions during a spin is true?

What statement about aerodynamic conditions during a spin is true?

• A. Both wings recover simultaneously, ending the spin.
• B. The aircraft automatically recovers after a brief stall.
• C. During a spin, the wing that dips remains stalled.
• D. After a full stall, the wing that dips continues in a stalled condition while the rising wing regains and continues to produce some lift, causing the rotation.

Answer: (D)

In a spin, the aircraft flies in an aggravated stall with a distinct lift imbalance between the wings. The wing that dips downward remains deeply stalled, producing little lift and high drag. Meanwhile, the rising wing is relieved somewhat by the rotation and can regain some lift, so it continues to generate lift while the spin persists. This difference in lift and drag between the wings keeps the airplane rotating rather than stopping, until an intentional recovery action reduces the angle of attack on both wings and restores coordinated flight. In short, the spinning motion is sustained by the dipped wing staying stalled while the rising wing regains lift and continues to influence the rotation.

In a spin, the aircraft flies in an aggravated stall with a distinct lift imbalance between the wings. The wing that dips downward remains deeply stalled, producing little lift and high drag. Meanwhile, the rising wing is relieved somewhat by the rotation and can regain some lift, so it continues to generate lift while the spin persists. This difference in lift and drag between the wings keeps the airplane rotating rather than stopping, until an intentional recovery action reduces the angle of attack on both wings and restores coordinated flight. In short, the spinning motion is sustained by the dipped wing staying stalled while the rising wing regains lift and continues to influence the rotation.