Academic Journal of Engineering and Technology Science, 2024, 7(5); doi: 10.25236/AJETS.2024.070505.
Liyang Ni
School of Automation, Nanjing University of Science and Technology, Nanjing, 210094, China
To calculate the maximum safe jump altitude that a skydiver can achieve on a vertically launched rocket, and to calculate the critical opening speed and the landing speed in this condition, this paper deduces the theoretical formula for the critical parachute opening speed based on the inflation volume theory and analyzes the factors affecting the critical parachute opening speed. It is found that the critical opening speed of the parachute is inversely proportional to atmospheric density and fabric permeability. On this basis, the influence of air resistance, gravitational force, Earth rotation, and other factors are analyzed. The movement state and possible fall trajectory of the skydiver are studied, a physical model is established, and the safe landing speed that the human body can bear is combined to analyze and calculate the maximum height at which the skydiver can safely land on the ground. In the end, it is calculated that the maximum jump height at which a skydiver could safely land is approximately H ≈ 5250.63 km.
Skydiving, Parachute Opening Speed, Air Resistance, Parachute Inflation
Liyang Ni. Study on Critical Parachute Opening Speed Based on Air Resistance. Academic Journal of Engineering and Technology Science (2024) Vol. 7, Issue 5: 26-31. https://doi.org/10.25236/AJETS.2024.070505.
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