Ayrton Oneill
A shuttlecock, also called a birdie or shuttle, is a high-drag projectile used in the sport of badminton. It has an open conical shape formed by 16 or so overlapping feathers, usually from a goose or duck, embedded into a rounded cork (or rubber) base. The shuttlecock's shape makes it extremely aerodynamically stable. The feathers are plucked from the wings of a live goose or duck, a method deemed cruel by animal rights activists. To improve the durability and longevity of shuttlecocks, synthetic shuttlecocks have been developed, which are more environmentally friendly and perform similarly to natural feather shuttlecocks.
| Characteristics | Values |
|---|---|
| Shape | Conical |
| Weight | 4.75 to 5.50 g |
| Materials | Feathers, cork, leather, plastic, nylon, rubber, polyurethane |
| Feather Type | Goose, duck |
| Number of Feathers | 14, 16 |
| Feather Placement | Overlapping, circular |
| Durability | Feathers are brittle and break easily, synthetics are more durable |
| Speed | 25-50 m/s, varies by temperature, humidity, and height above sea level |
| Playing Level | Recreational, training, club, match, tournament, senior tournament |
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What You'll Learn
The base: cork, composite cork, rubber or plastic
The base of a shuttlecock is essential to its stability and weight distribution. It is made from cork, composite cork, rubber, or plastic. The most common material for the base is cork, which can be natural or composite. Natural cork is considered the premium option, offering the best playing experience, but it comes at a higher price. Composite cork, on the other hand, is made by sandwiching polyurethane between two pieces of cork. While this method produces a more durable base, it tends to cause the cork to become misshapen over time.
Cork bases are covered in thin leather, and 16 or so feathers are embedded into them. Feathers are typically sourced from goose or duck wings, with goose feathers being the premium option. The use of feathers from only one wing, either right or left, in each shuttlecock is considered preferable to ensure consistent flight properties.
Rubber bases are another option, though they are less commonly used than cork. Synthetic shuttlecocks, also known as "birdies," are made from plastic or nylon. They are popular among beginners and for recreational play in the US and Canada due to their lower cost and higher durability compared to feathered shuttlecocks. The skirt of a synthetic shuttlecock is made of plastic or nylon, and its porosity distribution is designed to replicate the aerodynamic effect of overlapping feathers. While synthetic shuttlecocks are more durable, they have poorer in-flight stability and cannot reach the high-speed range of feathered shuttlecocks.
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Feathers: usually goose or duck
The feathers used in a shuttlecock are usually sourced from goose or duck. The feathers are plucked from the wings of a live goose or duck, a method that has been criticised by animal rights activists. It is considered preferable to use feathers from either the right or left wing only in each shuttlecock, rather than mixing feathers from different wings, as the feathers from different wings are shaped differently. Only feathers from the left wing of the birds will work because the angle of the feather must be consistent for the shuttlecock to fly and rotate correctly.
The feathers are trimmed and arranged in an overlapping circular manner around a weight at one end, with around 16 feathers used in total. The weight can be made from natural cork, composite cork or plastic base material. The cork is covered with thin leather. The feathers contribute to the drag on a shuttlecock, which significantly affects its trajectory. The gaps in the lower section of the skirt play a major role in causing a difference between the pressure inside and outside the skirt, which leads to drag.
Feather shuttlecocks are brittle and expensive. They are not long-lasting as they are made from natural feathers, and wear and tear can affect flight stability. Feathers can become damaged or lost, and the shuttlecock will need to be replaced if this happens. They are also easily damaged and should be replaced every three or four games or sooner if they are damaged and do not fly straight.
Despite this, feather shuttlecocks are the preferred choice for professional badminton players, as they are greatly preferred by more experienced and skillful players. Serious tournaments or leagues are always played using feather shuttlecocks of the highest quality.
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Weight: around 4.75 to 5.50 grams
A regulation standard shuttlecock weighs around 4.75 to 5.50 grams (0.168 to 0.194 oz). The weight of a shuttlecock is an important factor in its performance, and different weights are used to compensate for local atmospheric conditions. Humidity and height above sea level can affect the shuttle's flight. Badminton is a racquet sport that uses a shuttlecock instead of a ball. The shuttlecock's weight, in combination with its distinctive structure, gives it a high drag, allowing it to achieve high speeds and decelerate quickly.
Shuttlecocks are made from feathers or synthetic materials, with the feathered variety being the preferred choice for professionals. The feathers used are usually goose or duck, and the synthetic shuttlecocks are typically made from plastic or nylon. The base of the shuttlecock is usually made from cork, but synthetic cork bases are also used to reduce cost and increase durability.
The feathers are arranged in an overlapping circular manner, with around 16 feathers used to create the open conical shape. The feathers are embedded into the base, with the cork often covered in thin leather. The feathers must be of a consistent angle for the shuttlecock to fly and rotate correctly, so only feathers from the left or right wing are used.
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Speed: affected by weight, temperature and humidity
The speed of a badminton shuttlecock is affected by its weight, the temperature of its environment, and the level of humidity in the air.
Weight is an important factor in determining the speed of a shuttlecock. The heavier the shuttlecock, the faster it will travel. This is because a heavier object has more momentum and will therefore be able to move through the air faster than a lighter object. The weight of a shuttlecock can vary depending on the type of cork used, with faster shuttlecocks having heavier corks.
The speed of a shuttlecock is also influenced by the temperature of its surroundings. A higher temperature causes the air to become less dense, as warmer air is less dense than cooler air. This means that a shuttlecock will encounter fewer air particles as it moves through the air, resulting in reduced drag and increased speed. Therefore, shuttlecocks will generally travel faster in warmer environments.
In addition to temperature, humidity also plays a role in determining the speed of a shuttlecock. Higher humidity leads to an increase in the water vapour content of the air, which in turn makes the air less dense. This is because water in its gaseous form is lighter than air. Consequently, a shuttlecock will experience less air resistance and travel faster in humid conditions. The interaction between humidity and the feathers of a shuttlecock can also impact its trajectory, with moisture-laden feathers dampening and affecting the flight path.
The interaction between temperature and humidity can result in notable differences in shuttlecock speed across different seasons. For example, dry and cold winter conditions tend to produce slower speeds compared to hot and humid summers. The specific combination of temperature and humidity can cause variations in the performance of a shuttlecock, with some players noting that a good quality shuttlecock can travel up to one metre shorter in the winter than in summer.
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Durability: feathers are brittle and expensive
The feathers used in shuttlecocks are typically plucked from the wings of live geese or ducks, a method considered cruel by animal rights activists. Feathers are brittle and expensive, and they can easily be damaged or lost during play. This impacts the shuttlecock's flight stability, which is why they need to be replaced every three to four games, or sooner if they are damaged.
Feather shuttlecocks are not long-lasting due to their natural composition. They are also more expensive than synthetic shuttlecocks, as the higher-grade feathers are less plentiful, so the demand is higher than the supply. The base of the shuttlecock can also impact the price, with full natural cork playing and feeling the best, but also commanding a premium price.
The feathers are arranged in an overlapping circular manner and attached to a weight at one end, which can be made from natural cork, composite cork, or plastic. The cork base is then covered in thin leather. The feathers contribute to the drag on the shuttlecock, which significantly affects its trajectory. Feathers from different wings are shaped differently, so to ensure a satisfactory flight, it is considered preferable to use feathers from either the right or left wing only in each shuttlecock.
To help prolong the life of a shuttlecock, it is recommended that they are stored in a humid environment, so the feathers do not become brittle and dry, which can lead to quicker breakage.
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Frequently asked questions
A shuttlecock is made from 16 or so overlapping feathers, usually goose or duck, embedded into a rounded cork base. The cork is covered with thin leather.
There are feather shuttlecocks and synthetic shuttlecocks. The latter is made from plastic or synthetic alternatives.
Synthetic shuttlecocks are twice as durable as natural feather shuttlecocks and have a longer lifespan. They also require less water to produce as they do not need to be washed, sterilized, and bleached.
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