The hole in the middle of the parachute canopy is called the “ventilation hole”. It is designed to control the rate of descent of the parachute and ensure stability.
When the parachute opens, air rushes inside the canopy, filling it and creating a large surface area that slows the descent of the person or object attached to the parachute. However, if it were not possible to release some of the air, the parachute would remain inflated and difficult to control. The hole allows some of the air to escape, allowing the parachute to remain stable and maneuverable.
The size and shape of the vent hole may vary depending on the design of the parachute and the desired descent rate. A larger opening will allow more air to escape and speed up the descent, while a smaller opening will slow down the rate of descent. The vent hole is usually located at the top of the parachute, above the person or object being supported, to help maintain stability.
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