刻划半径计算器

quoiguaski

此贴说法似乎有问题， 小心注意
http://www.carving-ski.de/faq/ski-radius-rechner.php




算的不错，挺准的。

bullpower

if 0 degree edging, how can a c@rving ski turn??
It's totally against the design and physics of c@rving skis

bullpower

到底怎么回事，到底需要不需要EDGING？

http://www.arinsal-andorra.com/content/view/93/93/
The principle of the carving ski is fairly simple. The ski has curved edges so that it is narrower underfoot than at the tip and tail. This means that when it is tipped onto its edge it will bend under the weight of the skier. The further it is tipped, the more it will bend. As the ski moves forward, it will tend to follow the curve of the edge meeting the snow and turn in a smooth arc. This arc is controlled by the shape of the ski, the amount it is tipped over and the amount of pressure on it.

http://www.real-world-physics-problems.com/physics-of-skiing.html

The sidecut helps skiers make purely carved turns. It affects the physics of skiing in this regard by influencing the radius of purely carved turns, as will be discussed.A purely carved turn can be done with a ski that is flat on the snow or tilted at an angle to the snow. The figure below illustrates a ski that is tilted at an angle φ to the snow. When the ski is flat on the snow φ = 0.

(Note: In reality the ski edge is pressed into the snow, for a given angle φ. This is discussed in more detail in the physics of skiing section on how to prevent ski slippage).

When the ski is flat on the snow, a purely carved turn is executed when the radius of the turn RT equals the sidecut radius RSC. This allows the ski to go around the turn without any skidding, since the ski is always pointed in the same direction as its velocity v. The figure below illustrates a purely carved turn for a ski that is flat on the snow.

iSki

回复 1 # quoiguaski 的帖子

"Radius difference"这个指标有啥意义？是不是标志搓雪的能力？

quoiguaski

quoiguaski

quoiguaski

我们等等jluo达人， 他一定会给我们一个完美的解释的。

bullpower

quoiguaski  吃力的， 吃力的， 另外一边只是没有离开雪面而已  发表于 45 秒前

EDGING角度为０，
两个SIDE　CUT或者都不吃力，或者吃力相等，还是不明白为什么会TURN

bullpower

quoiguaski  这厮大概把雪面做为刚性表面来考虑了。  发表于 2 分钟前

你以为它算半径还把雪的变形考虑进去了？？？
都是理想状态下算的，雪面就是刚性表面
CARVING　SKI能TURN，全靠SIDE　CUT受力使雪板变形，如果没有EDGING，没变形，TURN个头啊。。。。
就是冲坡

jluo

jluo is sick, leave him alone, you guys can fight it out.

==> hint, skis are not flat