Is fixed-point skydiving an extreme sport in the Olympic Games?

Fixed-point skydiving belongs to the extreme sport of the Olympic Games.

Bottom jump is generally jumping on fixed objects such as tall buildings, cliffs, towers and bridges. Because of the limited distance, it only takes 5 seconds to open the umbrella bag, so it is difficult to adjust the posture and movement in the air. Only experienced parachutists can go to the base to jump, but there is no guarantee of foolproof.

As an extreme sport, skydiving does have its unique beauty. It is different from traditional parachuting (airplane) in terms of parachute folding mode, parachute opening procedure and umbrella equipment, which can be summarized as "accuracy, accuracy and stability".

The parachutist has two umbrellas, the main umbrella and the backup umbrella, while base jump has only one umbrella, so he can only succeed once when opening the umbrella. Because of the low height from the ground, athletes don't have time to adjust their direction with a correcting stick, so they should face the aiming fixture directly at the moment of opening the umbrella.

Height limit:

Skydiving has a safety height limit, which is divided into two values: the lowest and the highest. In general, the maximum safe height is defined by the limit that the human body can withstand atmospheric pressure, because the higher the height, the thinner the air, the smaller the air pressure and the lower the temperature, which is unbearable for human physiology. It is generally believed that the maximum safe height is 5000 meters.

However, this is the height of skydiving without protective gear. With oxygen equipment, winter clothes, etc. Professional paratroopers and paratroopers often challenge higher heights. Most parachutes take off around 7500 meters.

The minimum height is limited by the parachute design. Considering the size and opening speed of the parachute, if the height is too low, the parachute may not be fully opened, thus affecting safety.

In addition, the comprehensive consideration of flight speed and skydiving mode also has an impact. Generally speaking, the minimum safe altitude for ordinary plane parachuting is 500 meters, and the minimum safe altitude for military paratroopers may reach 300 meters. The ejection seat of a fighter jet can still ensure safety when it is ejected above 100 meters.