# Aircraft Spin:
In aviation, a spin is an aggravated stall resulting in autorotation about the spin axis wherein the aircraft follows a corkscrew downward path. Spins can be entered intentionally or unintentionally, from any flight attitude and airspeed—all that is required is sufficient yaw rate while an aircraft is stalled
In a spin, both wings are in a stalled condition, but one wing will be in a deeper stall condition than the other. This causes the aircraft to autorotate (yaw) toward the deeper-stalled wing due to its higher drag. Spins are also characterized by high angle of attack, low airspeed, and high rate of descent.
Spins differ from spiral dives which are characterized by low angle of attack and high airspeed. A spiral dive is not a type of spin because neither wing is stalled. In a spiral dive, the airplane will respond conventionally to the pilot's inputs to the flight controls. A spin, on the other hand, is a low speed maneuver that requires stall recovery techniques.
In the early years of flight, a spin was frequently referred to as a "tailspin".
Many types of airplane will only spin if the pilot simultaneously yaws and stalls the airplane (intentionally or unintentionally). Under these circumstances, one wing tends to stall more deeply than the other. The wing that stalls first will drop, increasing its angle of attack and deepening the stall. Both wings must be stalled for a spin to occur. The other wing will rise, decreasing its angle of attack, and the aircraft will yaw towards the more deeply stalled wing. The difference in lift between the two wings causes the aircraft to roll, and the difference in drag causes the aircraft to yaw.
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Table of Contents:
- What Is Aircraft Spin?
- Four Phases Of Aircraft Spin
- Entry Phase
- Incipient Phase
- Developed Phase
- Recovery Phase