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General Principles of Alpine Ski Turning Technology
First, the meaning of Alpine skiing turn technology
Using a suitable action method to make the snowboard from time to time change the direction of the slide is a ski turn. The traces that the snow board runs on the snow when turning are a continuous "S" curve. Turning is the key, key and essence of alpine skiing technology. It contains endless charm.
Second, the classification of Alpine skiing turns
The turn of alpine skiing is called turning in the field of athletics.
1. Classification of Turning Technology
(1) According to the turning technique, the magnitude of the movement and the size of the gliding curve can be roughly classified into large bends, medium bends, and small bends.
(2) There are single turns and continuous turns according to the number of turns (multiple turns are consecutive).
(3) The different classifications of the shape and movement structure of the snowboard during cornering are:
- Plow-style turning and plow-type continuous turning;
- semi-plough-type turn;
- Semi-plough type continuous turning;
- Stepping turn;
- Sharp round the mountain;
- Ice-type turn;
- Double board parallel turning;
- Double parallel turns;
——Double-plate swinging turn;
- boarding a turn;
- Jumping turns;
- Carbene turning technology.
Third, why the skis can turn
The elements that make the skis turn:
1. The angle of attack formed by the snowboard (angle formed by the snowboard and the original glide direction line). The angle of attack formed by the active board is effective, and the angle of attack guides the skis to slide in the new direction. See Figure 46.
2. The vertical edge of the snowboard forms a vertical edge. Like riding a bicycle, the body inclines toward the inside of the turn during cornering, and the body's center of gravity moves toward the inside.
3. Give a certain amount of force (imagine a combination of forces such as sliding force and resistance, force and reaction force, centripetal force, and centrifugal force). Just as riding a bicycle handlebar needs the power of the arm, the tilt of the body must be gravity. The force of skiing mainly causes the edge of the board to stand up and heavier weight is applied to the snowboard to cause deflection and stress. Skiers are multidimensional when they turn, and it is difficult to have a quantified measurement. Changing each action will cause changes in the direction and size of the force. See Figure 47.
4. Snowboard's own geometry, performance (proportion of the front, middle, and rear widths of the snowboard side, elasticity, angle condition of the edge edge) and the degree of deformability after the pressure is applied (the magnitude of the stress). If you change the snowboard into a long hardwood board, you can't turn it. Even if an angle of attack or an angled edge is formed and the force of a large cow is given, the board will only form a severe slipping sloping sideways rather than turning, see Figure 48.
5. Skiers' body posture and center of gravity determine the accuracy and continuity of the turn. As with cycling, the cyclist's posture is not correct. Even with other elements, there is no safe, smooth bend.