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Biodynamic model of a parachutist
Aviation, Space, and Environmental Medicine
|January 1, 1978
Summary
A new 3D computer model simulates parachutist dynamics, analyzing opening shock and wind forces. This biodynamic model accurately predicts head acceleration, aiding safety research.
Area of Science:
- Biomechanics
- Aerospace Engineering
- Computational Dynamics
Background:
- Parachuting involves complex dynamics influenced by opening shock and wind.
- Accurate modeling is crucial for understanding parachutist safety and performance.
Purpose of the Study:
- To develop and validate a three-dimensional, gross-motion, finite-segment model of a parachutist.
- To analyze the effects of opening shock and wind loading on parachutist dynamics.
Main Methods:
- Modification of the UCIN Crash Victim Simulation Code.
- A 11-rigid-body model simulating the human figure with springs and dampers for joints.
- Parachute forces modeled via riser forces; wind loading via profile drag.
Main Results:
- Numerical integration of the dynamical equations of motion.
- Comparison of model predictions with experimental data for parachutist head acceleration.
- Demonstrated good agreement between the model and experimental results.
Conclusions:
- The developed finite-segment model provides a valid tool for studying parachutist dynamics.
- The model accurately captures the effects of key forces like opening shock and wind loading.
- This simulation can enhance the understanding of parachutist biomechanics and safety.