Automatic Transfer Vehicle ATV Reentry Safety Trajectory ... - Congrex

ECM Trajectory Risk Analysis
Parameter Distribution Dispersion
Impulse duration Gaussian Mean=1383.4 s, 3sigma = 35%
Thrust level Uniform [-5.4% ; 13.2%]
Thrust pitch angle Gaussian 3sigma = 1.72°
Atmosphere density Uniform [-50% ; 50%]
Altitude of explosion Gaussian mean=75 km, 3sigma=6km
Fragments ejection direction Uniform uniform dispersion in 3D space
21x10 6 trajectories run
First deorbitation maneuver is not
dispersed
ASTOS’s bach mode tool used to
perform the Monte Carlo simulations
24