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Old 01-25-2005 | 07:05 PM
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Silent-AV8R
 
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Default RE: Spin entry? and Snaps...

ORIGINAL: brweg
If you yaw the plane to initiate autorotation, you will get dinged.
Not quite right. Let me clarify this a bit. What Barry is really trying to say here is that if you yaw the plane prior to the start of the autorotation of the spin for anything other than wind correction, that will result in a downgrade. In fact it is the yaw combined with the stall that results in the autorotation of a spin. Not all stalls result in a spin. But all spins require a stall in combination with a yaw component.

A prefect spin will be achieved when the judge's see the plane approach a stall with no deviation in altitude or track (yaw for wind correction is allowed), then the plane stalls and the wing drops in the direction of the spin. This will result in the nose simultaneously yawing in the direction of the spin as the wing falls away from level. In fact this is a sort of chicken/egg thing. It is very hard for the wing to drop without a yaw compnent and vice versa. The plane will then autorotate for the prescribed number of rotations (up to 2 maximum), stop at the correct number of dergees of rotation. A straight vertical downline (wind corrected if necessary) is then established and the plane exits with a smooth 1/4 loop to level with the wings level and no deviations in track (roll, yaw, pitch).

If the plane does not stall, it is a zero. This is usually seen by the "sneak" entry where the pilot pushes the nose over without the plane stalling.

If the plane stalls and the nose and wing do not immediately fall in the direction of the spin, that is a downgrade of 1 point per 10 degrees of deviation. While the rules call this a forced entry what most judges mean by that term is an non-stalled "sneak" entry.

If the plane snaps into the spin, usually evidenced by the outside wing (the one opposite the direction of the spin) rising up or the nose also rising up, that is a zero as well.

Hope this helps.

Bill