Structure of archery target in 2008 Olympic Games

First of all, let me help you explain the supplementary question: the bull's-eye of archery targets (male and female) in Beijing Olympic Games is equipped with shooting heads, mainly for viewing needs, which can provide a convenient basis for technical evaluation; There is a small fork "+"or "X" on the ten ring in the ring target. A pinhole camera is installed here, which can go deep into the target. It is very small, even if the arrow hits, it will not be damaged, and it will not affect the target or cause the arrow to fall off (the probability of hitting this point is quite low). We can often see the wonderful replay of ten ring shot by pinhole camera in the game, which was shot by pinhole camera of bull's-eye.

We can roughly divide it into three parts: ring target (outer layer), arrow target (inner layer) and target frame (support).

1, circular target

The annular target is circular with a diameter of 122 cm. From the center to the outside, it is divided into five concentric circles with equal width: yellow, red, light blue, black and white.

Each color area is divided into two equal-width areas of the same color by a thin line, thus forming 10 equal-width annular areas. There is a central ring in the ring area of 10, which is used to evaluate some rankings with the same number of rings. The zoning loop is zoned in the high-ring area. The outer edge line of the outermost white area is drawn in the recording area. The line width shall not exceed 2mm. No matter what kind of ring target, the diameter error of each ring in the ring area with more than 8 rings (including 8 rings) shall not exceed+1mm. The center of the ring target is marked with "+"or "X" symbol, which is called pinhole. The line width of the "+"symbol shall not exceed 1 mm.

The ring target can be made of paper, cloth or other suitable materials, but in the same competition, the materials used are the same and the specifications are uniform. In international competitions, the target paper contains fibers and is directly hung on the arrow target for use. Ordinary target paper should be glued to a special board and then hung on the arrow target. )

2. Arrow target

There are generally two kinds of targets used in archery competitions: square and round. The arrow target is made of straw and flax or other suitable materials. The side length and diameter of the arrow target shall not be less than 124 cm, and the thickness is generally 15-25 cm. The target of the arrow is required to be durable, moderate in hardness, so that the arrow can be easily shot without damage, difficult to penetrate or rebound or fall off, and can be firmly installed on the target frame.

3. Target framework

The frame supporting the arrow target is called the target frame, which is made of wood or bamboo and requires firmness, but it cannot damage the arrow. The target frame is obliquely placed on the finish line, and the included angle with the vertical line on the ground is about 10- 15 degrees. The height of the center of each ring target from the ground is130cm, which should be in a straight line.