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.
黄浦区正规滑翔伞省钱
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The next step in the launch is to bring the
wing into the lift zone. There are two techniques for accomplishing this
depending on wind conditions. In light wind this is usually done after turning
to the front, steering with the feet towards the low wing tip, and applying
light brakes in a natural sense to keep the wing horizontal. In stronger wind
conditions it is often found to be easier to remain facing downwind while
moving slowly and steadily backwards into the wind.
Knees bent to load the wing, foot
adjustments to remain central and minimum use of Cs or Brakes to keep the wing
horizontal. Pirouette when the feet are close to lifting. This option has two
distinct advantages. a) The pilot can see the wing centre marker (an aid to
centring the feet) and, if necessary, b) the pilot can move briskly towards the
wing to assist with an emergency deflation.
With either method it is essential to check
"traffic" across the launch face before committing to flight.
These developments were combined in June
1978 by three friends, Jean-Claude B茅temps, Andr茅 Bohn and G茅rard Bosson, from
Mieussy, Haute-Savoie, France. After inspiration from an article on slope
soaring in the Parachute Manual magazine by parachutist and publisher Dan
Poynter,[7] they calculated that on a suitable slope, a "square"
ram-air parachute could be inflated by running down the slope; B茅temps launched
from Pointe du Pertuiset, Mieussy, and flew 100 m. Bohn followed him and glided
down to the football pitch in the valley 1000 metres below.[8]
"Parapente" (pente being French for "slope") was born.
From the 1980s, equipment has continued to
improve, and the number of paragliding pilots and established sites has
continued to increase. The first (unofficial) Paragliding World Championship
was held in Verbier, Switzerland, in 1987,[9] though the first officially
sanctioned FAI World Paragliding Championship was held in K枚ssen, Austria, in
1989.[10]
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。
松江区质量滑翔伞按需定制
黄浦区正规滑翔伞省钱
In 1952 Canadian Domina Jalbert patented a
governable gliding parachute with multi-cells and controls for lateral
glide.[2]
In 1954, Walter Neumark predicted (in an
article in Flight magazine) a time when a glider pilot would be "able to
launch himself by running over the edge of a cliff or down a slope ... whether
on a rock-climbing holiday in Skye or ski-ing in the Alps."[3]
In 1961, the French engineer Pierre
Lemongine produced improved parachute designs that led to the Para-Commander.
The PC had cutouts at the rear and sides that enabled it to be towed into the
air and steered, leading to parasailing/parascending.
Domina Jalbert invented the Parafoil, which
had sectioned cells in an aerofoil shape; an open leading edge and a closed
trailing edge, inflated by passage through the air – the ram-air design. He
filed US Patent 3131894 on January 10, 1963.[4]
黄浦区正规滑翔伞省钱
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