In aircraft that are capable of recovering from a spin, the spin has four phases. For all or some types of spin some airplanes are not recoverable. At low height recovery may also be impossible. In both cases, only the first three phases occur.
- Entry – The pilot stalls the plane while in uncoordinated flight.
- Incipient – With one wing more stalled than the other, the rotation starts.
- Developed – The aircraft's rotation rate, airspeed, and vertical speed are stabilized. At least one wing of the aircraft is stalled.
- Recovery – After appropriate control inputs, the angle of attack of both wings decreases below the critical angle of attack, rotation slows. The nose attitude of the aircraft steepens, airspeed increases, autorotation stops, the aircraft is no longer stalled. The controls respond conventionally and the airplane can be returned to normal flight.
Read more about this topic: Tailspin
Other articles related to "phases, phase":
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... CALPHAD stands for CALculation of PHAse Diagrams ... An equilibrium phase diagram is usually a diagram with axes for temperature and composition of a chemical system ... phases) are stable and regions where two or more of them coexist ...
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