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In some modern paragliders (from the 1990s

onwards), especially higher-performance wings, some of the cells of the leading

edge are closed to form a cleaner aerodynamic profile. Holes in the internal

ribs allow a free flow of air from the open cells to these closed cells to

inflate them, and also to the wingtips, which are also closed.[13]

The pilot is supported underneath the wing

by a network of suspension lines. These start with two sets of risers made of

short (40 cm) lengths of strong webbing. Each set is attached to the harness by

a carabiner, one on each side of the pilot, and each riser of a set is generally

attached to lines from only one row of its side of wing. At the end of each

riser of the set, there is a small delta maillon with a number (2 – 5) of lines

attached, forming a fan. These are typically 4 – 5 metres long, with the end

attached to 2 − 4 further lines of around 2 m, which are again joined to a

group of smaller, thinner lines. In some cases this is repeated for a fourth

cascade.

奉贤区**滑翔伞价格如何计算

着陆涉及更多的计划，因为可能有多个飞行员必须同时着陆。因此，已经建立了特定的流量模式。飞行员排在飞机场上方并降落在降落区一侧，该位置取决于风向，飞行员可能会因坐飞机而失去身高（如有必要）。从该位置开始，它们以矩形模式沿着飞行路径的腿到达着陆区：顺风腿进场。这允许在多个飞行员之间进行同步，并减少发生碰撞的风险，因为飞行员可以预测他周围的其他飞行员接下来将要做什么。

技术技巧

在进近下降过程中，在接触地面大约四米之前，可以施加一些瞬时制动，然后使用向前的摆动动量来获得速度，以更有效地展开并以**小的垂直速度接近地面。

在小风中，一些小跑很常见。在中等到中等的逆风中，着陆时可能没有前进速度，甚至在强风中甚至可能相对于地面后退。用风着陆会迫使飞行员向后退，这特别危险，因为它可能会翻滚并被拖拽。当机翼垂直于飞行员上方时，有可能降低风险放气。这涉及到每只手在槌/竖板交界处抓住前缘线（As），并通过深深的膝盖弯曲动作来施加飞行员的全部重量。在几乎每种情况下，机翼的前缘都会向前飞一点，然后“折”。然后，它可能会坍塌并下降到飞行员的上风处。在地面上，它将被飞行员的腿约束。

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Paragliding is the recreational and competitive adventure sport of flying paragliders: lightweight, free-flying,

foot-launched glider aircraft with no rigid primary structure.[1] The pilot sits in a harness suspended below a fabric wing. Wing shape is maintained by the suspension lines, the pressure of air entering vents in the front of the wing, and the aerodynamic forces of the air flowing over the outside.

 Despite not using an engine, paragliderflights can last many hours and cover many hundreds of kilometres, though flights of one to two hours and covering some tens of kilometres are more the norm. By skillful exploitation of sources of lift, the pilot may gain height,

often climbing to altitudes of a few thousand metres.

安全

滑翔伞在巴西Araxá发射视频

像任何极限运动一样，滑翔伞是一种潜在的危险活动。例如，在美国，2010年，一名滑翔伞飞行员死亡。这相当于5,000名飞行员中的一名。在1994-2010年间，每10,000名活跃的滑翔伞飞行员中平均有7人受到致命伤害，尽管近年来情况已有明显改善。在法国（有超过25,000名注册机员），2011年每10,000名飞行员中有2人受伤（这一比率并非2007-2011年的非典型），尽管每1,000名飞行员中约有6人受到严重伤害（超过2名飞行员，日间住院）。

通过培训和风险管理可以**减少伤害的可能性。使用适当的设备，例如为飞行员的身材和技能水平设计的机翼[28]，以及头盔，备用降落伞[29]和缓冲式安全带[30]，也可以很大程度地降低风险。飞行员的安全受到对现场条件（如空气湍流（转子），强热，狂风和地面障碍物，如电力线）的了解的影响。胜任的教练对机翼控制和紧急演习进行足够的飞行员培训可以很大程度地减少。许多滑翔伞是飞行员错误和飞行条件差的结果。

Europe has seen the greatest growth in

paragliding, with France alone registering in 2011 over 25,000 active pilots.

Wing

Cross section of a paraglider

Transverse cross section showing parts of a

paraglider:

1) upper surface

2) lower surface

3) rib

4) diagonal rib

5) upper line cascade

6) middle line cascade

7) lower line cascade

8) risers

The paraglider wing or canopy is usually

what is known in engineering as a "ram-air airfoil". Such wings

comprise two layers of fabric that are connected to internal supporting

material in such a way as to form a row of cells. By leaving most of the cells

open only at the leading edge, incoming air keeps the wing inflated, thus

maintaining its shape. When inflated, the wing's cross-section has the typical

teardrop aerofoil shape. Modern paraglider wings are made of high-performance

non-porous materials such as ripstop polyester[12] or nylon fabric.[note 1]

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奉贤区**滑翔伞价格如何计算

The glide ratio of paragliders ranges from

9.3 for recreational wings to about 11.3 for modern competition models,[16]

reaching in some cases up to 13.[17] For comparison, a typical skydiving

parachute will achieve about 3:1 glide. A hang glider ranges from 9.5 for

recreational wings to about 16.5 for modern competition models. An idling

(gliding) Cessna 152 light aircraft will achieve 9:1. Some sailplanes can

achieve a glide ratio of up to 72:1.

The speed range of paragliders is typically

20–75 kilometres per hour (12–47 mph), from stall speed to maximum speed.

Beginner wings will be in the lower part of this range, high-performance wings

in the upper part of the range.[note 2]

For storage and carrying, the wing is

usually folded into a stuffsack (bag), which can then be stowed in a large

backpack along with the harness. For pilots who may not want the added weight

or fuss of a backpack, some modern harnesses include the ability to turn the

harness inside out such that it becomes a backpack.

奉贤区**滑翔伞价格如何计算

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