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本帖最后由 checkmoteur 于 2014-4-21 19:24 编辑
CSIA Phases Explained -
First - it is not "apex to apex", nor is it "transition to transition".
Second - it is the turn from start to finish from the perspective of the "skier"....not the "skis". This may seem pedendatic, but its a critical distinction.
Phase 1 - Begins when we "release the body" from the turn and let it flow or begin moving into the new turn. It is characterised when the skis begin to REDUCE edge angle. This will typically be at some point after the fall-line. Phase 1 ends at skis flat or "neutral".
Phase 2 - is "estabishing the platform". It begins at skis flat, and ends when the skier has something stable to stand on.This phase is also known as the "intiation phase" for those who read RL. Note the skier has not started to turn yet (to any appreciable amount)...the skier has only moved across the skis and gotten his mass forward in antcipation of the start of phase 3. This phase is where the pivot or stivot will happen if there is one. In the case of turns with some form of stivot this phase is longer...in pure arc to arc skiing particularily at the WC level, this phase is very short.
Phase 3 - is where the skis turn the skier. We can increase edge angle or manipulate fore/aft pressue here to "steer"....in more skidded turns we can also manipulate the steering anlge via pivoting. Hence this is where we have alot of control over the shape of the turn, and since the skier is now being turned by the skis we feel the loads greatest here. Hence this phase is also known as the "control phase" or "shaping phase" or "loading phase". It ends once we have turned the mass as much as we require and release it to move into the new turn...where Phase 1 begins again.
Blue line is "skier", black is "skis" |
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