Cassini Spacecraft Trajectory
Gravity-Assist Simulation
A vPython 3D visualization of the Cassini spacecraft's gravity-assist flyby at Jupiter and subsequent trajectory to Saturn. Using NASA JPL Horizons mission-derived initial conditions, the simulation highlights Cassini's sharp velocity pivot caused by Jupiter's gravity, followed by its capture into Saturn's gravitational field.
Simulation Features:
- Accurate trajectory based on NASA JPL data
- Visualization of gravity-assist maneuver
- Velocity changes during the flyby
Trajectory Analysis
Pre vs Post Gravity-Assist Trajectory
The green line shows Cassini's original inbound path toward Jupiter, while the blue line represents its outbound trajectory after the gravity-assist maneuver. This comparison highlights how Jupiter's gravity boosted the spacecraft's energy and altered it's course.
Velocity Data Analysis
Velocity Over Time
Data Points:
- Day 50: 12,900 m/s
- Day 90: 12,216 m/s
- Day 100: 12,199 m/s
- Day 102: 12,195 m/s (minimum)
- Day 110: 12,263 m/s
- Day 120: 12,792 m/s
Detailed Velocity Analysis
Key Calculations:
- Velocity at Day 100: 12,199 m/s
- Velocity at Day 102 (minimum): 12,195 m/s