Spiral (aviation)

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Spiral - a basic pilot figure consisting of a helically-moving helicopter with a gradual decrease in altitude. The spiral is performed at a reduced thrust or power of the power train with fixed tilting, fixed speed and constant turndown angle.

Spiral is a figure of acrobatics, which is performed on subcritical angle of attack - in contrast to the corkscrew, where the planes break at supercritical attack angles.

We distinguish spirals:

Steep spiral overload is greater than flat spiral. Bibliography

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