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]
南京原装滑翔伞需要多少钱
Radio
Radio communications are used in training,
to communicate with other pilots, and to report where and when they intend to
land. These radios normally operate on a range of frequencies in different
countries—some authorised,[18][19] some illegal but tolerated locally. Some
local authorities (e.g., flight clubs) offer periodic automated weather updates
on these frequencies. In rare cases, pilots use radios to talk to airport
control towers or air traffic controllers. Many pilots carry a cell phone so
they can call for pickup should they land away from their intended point of
destination.
GPS
GPS (global positioning system) is a
necessary accessory when flying competitions, where it has to be demonstrated
that way-points have been correctly passed. The recorded GPS track of a flight
can be used to analyze flying technique or can be shared with other pilots. GPS
is also used to determine drift due to the prevailing wind when flying at
altitude, providing position information to allow restricted airspace to be
avoided and identifying one's location for retrieval teams after landing out in
unfamiliar territory. 自动滑翔伞源头直供厂家
显示滑翔伞各部分的横截面:
1)上表面
2)下表面
3)肋骨
4)对角肋
5)上线级联
6)中线串级
7)下线级联
8)立管
滑翔伞的机翼或机盖通常在工程上称为“冲压空气翼型”。这样的翼包括两层织物,它们以形成一排网孔的方式连接到内部支撑材料上。通过使大多数舱室*在前缘处敞开,进入的空气使机翼保持充气状态,从而保持其形状。充气时,机翼的横截面具有典型的泪滴翼型形状。现代滑翔伞的机翼是由高性能的无孔材料制成的,例如尼龙纤维。
在某些现代滑翔伞(从1990年开始中,尤其是性能更高的机翼中,前缘的某些舱室被封闭以形成更干净的空气动力学轮廓。内部肋骨上的孔允许空气从开孔到这些闭孔的自由流动,以使它们膨胀,并向也闭合的翼尖膨胀。
飞行员通过悬吊线网络支撑在机翼下方。这些从两根短的(40厘米)长的坚固织带制成的立管开始。每组由一个登山扣固定在吊带上,飞行员的每一侧上各有一个,每个组的立管通常*从机翼一侧的一行上连接到绳索上。在该组的每个立管的末端,都有一个小三角洲的马龙,上面挂有数行(2 – 5)条线,形成一个风扇。这些线通常长4 – 5米,末端连接到大约2 m的另外2 – 4条线上,这些线又连接到一组更细的细线上。在某些情况下,对第四级联重复此操作。
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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.
青浦区口碑好滑翔伞价格合理
南京原装滑翔伞需要多少钱
Paragliders are unique among human-carrying
aircraft in being easily portable. The complete equipment packs into a rucksack
and can be carried easily on the pilot's back, in a car, or on public
transport.[14] In comparison with other air sports, this substantially
simplifies travel to a suitable takeoff spot, the selection of a landing place
and return travel.
Tandem paragliders, designed to carry the
pilot and one passenger, are larger but otherwise similar. They usually fly
faster with higher trim speeds, are more resistant to collapse, and have a
slightly higher sink rate compared to solo paragliders.
南京原装滑翔伞需要多少钱
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