转个关于提线的文章（英文）

cdwolf4829839

文章是英文的，有时间会翻译过来，但因水平有限，希望英语好的风友一起来翻译。让大家对提线有更多的了解。。。
Static BridleTop Close Open
Consider first a standard "Static Bridle" as shown in Diagram 1. Three bridle lines conjugate at a static point that is fixed relative to the position of the kite. This point is known as the "tow point" and usually has a final short section to which the flying lines attach (green marker).

Diagram 1 Static Bridle

Most dual line kites allow some degree of tuning in the bridle, by lengthening or shortening the relative lengths of these sections, to change the flight characteristics of the kite. In general, moving the tow point relative to the kite in the following directions has the corresponding effect:

• Tow point moved up towards nose
  kite becomes more responsive in light wind but may over-fly and become over-powered in higher wind. Precision is often improved but kite can become overly sensitive requiring more precise execution of tricks. Stalls are difficult to maintain due to the kite's increased forward drive.
• Tow point moved down away from nose
  kite has better high wind handling but may lack drive in lighter wind, refusing to move forwards. This characteristic can make stalls easier to hold, but the kite's tighter and faster turn rate can create a tendency to roll from side to side in stalls as well as a greater possibility of over-steer in turns. The "looser" feel contributes to a smoother and more forgiving responsiveness to tricks.
• Tow point moved out towards leading edge
  kite has faster, more responsive turning ability but may wobble when tracking or over-steer in turns.
• Tow point moved in towards centre T-Piece
  kite tracks better and performs crisper sharp corners, but lacks smoothness in turns.

Different positions have their own benefits and drawbacks and any position is essentially a trade-off between different characteristics.

[ 本帖最后由 捕风 于 2009-12-25 11:24 编辑 ]

503705882

转换静态提线到动态提线
如果您的风筝有3线制的静态提线，其中静态提线的上提线和下提线组成整条的外提线和 ...
驭风 发表于 2009-7-25 00:36 [/quote]

驭风老师你看我转换的对吗？画了个图 我原来的风筝是上提线和内提线为一根线 下提线是单独的
让我硬改成上下提线为一根了 这样可以吗 我提线的接法 是正确的吗 请指教 感谢！！

驭风

活跃提线
任何一种动态提线的基本原则就是结点可以相对风筝自动移动位置。活跃提线通过添加的两条额外的提线来做到这点，并可让提线在正确方向上在恰当范围内移动，以此来为不同的条件，位置，调动和技巧将不同结点位置的优势优化到一起。
就像所有典型的动态提线配置，活跃提线允许结点移动。并同时保持各条提线绳张紧，这对保持对风筝最高级别的控制力和优化风筝对应输入动作的反应能力是必要的。在静态提线系统里，结点如果移动那么一条或多条提线必然是松的。活跃提线的设计目标是尽可能多地提供为了改善风筝飞行特性所必须的结点移动量，同时又尽量保持风筝提线的形状和张紧。

图二
第一条添加的提线叫做“安定线”，如图二红线所示。连接在上提线和下提线之间。


图三
第二条添加的提线叫做“激活线”，如图三红线所示。连接在上提线和内提线之间。并轻轻的拉住它们。


图四
图4显示的效果是安定线允许结点向外移动靠近边杆和向内移动靠近中杆。其效果是这样的：

• 当风筝正在直线飞行，两条放飞线上的拉力大约是相等的（即放飞者的手处于同一距离） 。在此状态下，活跃提线趋向移动结点进一步移向中杆。这增加了直线飞行轨迹的精确度。
• 当放飞者拉（或松）一线来执行转弯，线上的结点朝向边杆被推向外。这提高风筝的转向能力。
• 风筝的旋转速率可以更精密地控制。放飞线上细微的拉力差别就将导致一个缓慢的弧曲线，而在另一个极端，重拉一条线将导致一个非常快速，紧急的自旋

图五
图5显示的效果是激活线在纵向控制风筝，其效果是相对地上下移动结点。

• 当风筝风帆压力减轻，结点就上移了，有效地朝向放飞者拉动机头。这提高了风筝在微风的反应能力，当然在风窗的外侧和顶部情况也一样。
• 当风筝风帆压力增加，结点开始下移，微微将机头推离放飞者。它会减慢风筝在强风中的速度，并有助于风窗中部的速度控制。它还有助于缓冲阵风，为您带来一个飞行更顺畅的风筝。
• 如上所述的风筝纵向控制的效果是，让风筝获得更大的飞行窗口，并为风窗的不同部分和在不同的风力条件下提供了一个更一致的飞行速度。

活跃提线有这两种自动调节效果，让风筝有更好的精确度，锐利的轨迹，更顺畅的旋转，增加了风力适应范围和飞行窗口大小还有更一致的速度。这组合了各种提线调整的好处同时没有任何的缺点。并且这些调整灵活地、自动地、即时地随着风力和放飞线的拉力发挥作用。一切都能但无需手动调整提线。

[ 本帖最后由 捕风 于 2010-1-29 00:29 编辑 ]

cdwolf4829839

Static Bridle  即静态提线，是一种很标准的提线，现在占主流的turbo就是由静态提线发展过来的
  下面是Active Bridle  直面翻译是 活跃提线，文章是它与静态提线的比较和优势所在
The Active BridleTop Close Open
The fundamental principle of any dynamic bridle is to have a tow point that can automatically move its position relative to the kite. The Active Bridle does this with the addition of two extra legs that give the bridle the required latitude of movement in the correct orientation to optimise the benefits of variable bridle positions for different conditions, positions, maneuvers and tricks.
As is typical of all dynamic bridle configurations, the Active Bridle allows movement of the tow point while keeping all sections of the bridle taut. This is necessary to maintain the best level of control of the kite and to optimise the responsiveness of the kite to user input. For the tow point to move in a static bridle, one or more lines of the bridle must go slack. The design goal for the Active Bridle is to allow as much movement as is necessary to improve the flying characteristics of the kite while maintaining the shape and tautness of the bridle as much as possible.

Diagram 2 Stabiliser Leg

The first additional leg, known as the "Stabliser", shown in red on Diagram 2, makes a connection between the upper leg and the lower legs.

Diagram 3 Activator Leg

The second additional leg, known as the "Activator", shown in red on Diagram 3, connects the inner and upper legs together, pulling them in slightly.

Diagram 4 Stabiliser Movement

Diagram 4 shows the effect of the Stabiliser leg in allowing the tow point to move out towards the leading edge and in towards the spine. The effect of this is such:

• When the kite is being flown in a straight line, pressure is roughly equal on each flying line (i.e. the flyer's hands are at the same distance). In this state, the Active Bridle shifts to move the tow points further in towards the spine. This increases the precision in straight line tracking.
• When the flier pulls (or pushes) on one line to execute a turn, the tow point on the line being pulled moves out towards the leading edge. This improves the kite's turning ability.
• The turning rate of the kite can be more closely controlled. A slight difference of pressure on the lines will create a slow, arcing curve, while at the other extreme, a hard pull on one line will create a very fast and tight spin.

Diagram 5 shows the effect of the Activator in controlling the pitch of the kite, effectively moving the tow point relatively up or down.

• When the pressure on the sail is light, the tow point shifts up, effectively pulling the nose of the kite in towards the flier. This improves the kite's responsiveness in light wind and also at the outer and upper edges of the wind window.
• When the pressure on the sail increases, the tow point shifts down and the nose of the kite is pushed away from the flier slightly. This slows the kite down in high wind and helps to control speed in the centre of the wind window. It also serves to buffer gusts, making for a smoother flying kite.
• The effects of pitch control as described above give the kite a larger wind window and provide a more consistent speed across different parts of the window and in different wind conditions.

Diagram 5 Activator Movement

These two effects when applied in conjunction by the Active Bridle, give a kite that has better precision, sharper tracking, smoother turning, increased wind range and window size and a more consistent speed. It is the combination of the benefits of different bridle adjustments without any of the drawbacks. Furthermore, the adjustments that permit this flexibility happen automatically in immediate response to the wind and the pressure on the flying lines. This can all but eliminate the need for manual bridle adjustments.

cdwolf4829839

有静态提线当然就有动态提线，下面文章是动态提线和静态提线的比较及对动态提线的介绍
A static bridle is one which is designed to remain fixed in a particular position while under tension. The diagram below depicts a static bridle in the left frame, shown here as a front-on view of the right wing of a kite. The 3 legs of the bridle are known as the inhaul (the line on the left going from the T-Piece to the tow point), the upper outhaul (going from the upper leading edge connector to the tow point) and the lower outhaul (going from the lower leading edge connector to the tow point). On most kites, the two outhauls, or one of the outhauls and the inhaul, are actually a single piece of line to which the third leg is attached. The tow-point, shown here as a green flash, is the point to which the flying lines are attached. On a static bridle, the tow point is designed to remain in a fixed position while the bridle is under tension.

Diagram 1 Static vs Dynamic Bridle

The dynamic bridle, shown in the middle frame has an extra section, the yoke, that connects the tow point to the outhauls. The lengths of the inhaul and outhauls may not necessarily be the same as on the static bridle, but it is possible to construct a dynamic bridle that has the tow-point in the same relative position as the static bridle equivalent.
The key feature of the dynamic bridle is shown in the right frame. Depending on the pressure applied to one or both flying lines, the tow point automatically shifts up or down whilst still maintaining tension on all lines in the bridle. On an equivalent static bridle, one leg or more will go slack if the tow point moves from its "home" position.

Diagram 2 Side View of Dynamic Bridle

The diagram above shows this in action from a side-on view. The blue lines represent the "normal" bridle position. When the kite is tilted forward, the upper outhaul on the static bridle becomes slack (left) whereas the dynamic yoke automatically shifts to a higher position, keeping all bridle lines tight (right).

cdwolf4829839

下面是动态提线的优点Benefits of a Dynamic Bridle
The beneficial effects of the Dynamic Bridle are in improving the tracking, turning and trickability of the kite.
In general, a higher tow-point (i.e. set closer the nose) will increase the forward speed of a kite and reduce the turning speed. Conversely, a lower tow point will slow down the forward speed but radically increase the turning ability of the kite. Too much of either is a bad thing, introducing sluggishness, unresponsivness or perhaps excessive oversteer. Designing a static bridle is about finding the right balance of these characteristics and making trade-offs between them.
The dynamic bridle can provide the best of both worlds. When flying in a straight line there is equal (or near equal) pressure on both flying lines. The effect on the bridle is that the tow points are pulled in and up, increasing the drive and improving the tracking. When one line (say the right) is pulled to instigate a turn, the opposite wing (the left) falls back away from the pilot. The dynamic bridle on the tensioned side (right) shifts the tow point down and out towards the tips, producing a tight spin. As soon as the lines are pulled back to equal pressure, the bridle reverts back to its upper position and prevents the oversteer that would normally be found on a low set bridle.
Many cutting edge freestyle tricks rely on getting in and out of positions where the kite is no longer facing the flier. Axels and Flat Spins, for example, have the face of the kite pointing more or less down towards the ground. In these positions, a static bridle would normally have one or more legs loose. When the flier tries to bring the kite out of the move or directly into another, the first few valuable moments when a line is pulled or popped are spent on taking up the slack in the bridle.
A dynamic bridle has a wide range of positions where all the bridle lines are tight, allowing the flier's actions to be transfered directly to the frame of the kite. A static bridle will often have one or two legs slack, forcing all the line pressure to be transmitted through a single bridle point resulting in instability and unpredictable control.
The most striking example of this benefit of the dynamic bridle is when trying to do Multiple Axels and Flat Spins. With a static bridle, the timing and force of each consequetive "pop" is critical to get the kite to remain flat but continuing to rotate. A dynamic bridle gives a much larger margin of error, to the extent that it is possible to keep Multiple Axels and Flat Spins going almost continuously, or at least until your flying lines start binding (which happens at about 25 revolutions, I can reliably inform you).

cdwolf4829839

如果你现在风筝用的还是静态提线又想尝试将他改成动态提线，那么就要看看这个了：

Converting a Static to a Dynamic Bridle
If your kite has a 3 leg static bridle in which the upper and lower outhauls are comprised of a single length of bridle line to which the separate inhaul line is attached, then you might want to try converting the original static bridle to a dynamic bridle. The beauty of this approach is that you use the original bridle and convert it using just one simple knot on each side. The process takes less than a minute, and if you don't like it, you can simply untie the knot to revert to the original bridle.
This guide was originally written with respect to the range of trick kites released by Benson Kites in 1995, the Box of Tricks, Reflex and Fusion. However, many kite manufacturers use a similar approach so the technique will be applicable to various other kites as well. Also know that many kite manufacturers, including Benson Kites, now use dynamic and Active Bridles on their kites as standard, so you might not need to do anything at all.
The diagram below shows a static bridle show on the left, which consists of a single piece of line connecting the upper and lower leading edge points. This is then attached to the inhaul at the tow point (shown as a green flash) with a lark's head knot. Slip this outer line off the tow point and, keeping the line folded at the original bridle mark (red dot), pull the line down towards the tail.

Diagram 3 Static Bridle

Fold the line in half at the original bridle mark and tie an overhand knot with the loop, tying the upper and lower sections together to make the yoke. The outer line, now containing the loop section, can now be re-attached to the tow point using a lark's head. The line is attached at the original bridle point. This is shown in the diagram below.

Diagram 4 Dynamic Bridle

The exact position of the knot can be changed to get different effects. The optimum position for the Box of Tricks and Fusion has the knot directly in line with the lower spread (as shown below, left) when the bridle is pulled taut down against the frame. The Reflex requires a slightly higher knot as show on the right.

Diagram 5 Typical Position for Box of Tricks (left) and Reflex (right)

Moving the knot up increases the length of the yoke and causes a more dramatic dynamic effect. An excessively dynamic bridle is characterised by the nose of the kite "rocking" forwards, particularly when coming out of tight turns. The knot can be moved further down towards the tow point to shorten the yoke and limit the dynamic effect

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太晕。。。。(wanpihou52) (wanpihou52)

cdwolf4829839

(wanpihou87) 查查你不用看啦吧

Aeolus

这个帖子好！  楼主为大家提供的好像是英国本森公司关于提线的讲解和说明。从三点固定线、半灵活线到全方位灵活线解释的非常好，使筝友通过提线的调整给风筝带来的变化会有一个全新的认识，开拓视野，从而提高放飞水平。

shian

翻译成中文就更好

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哪位高手翻译下吧(wanpihou53)