How the Tesla Roadster's Cold-Gas Rocket Thrusters Actually Work

Scott Manley examines the newly revealed Tesla Roadster and explains the engineering behind its rocket-assisted performance features. The discussion covers the different variants, the ground-effect aerodynamics, and the physics of the cold-gas thrusters, with calculations on thrust, energy use, and refill time.

■ The New Tesla Roadster
- Variants introduced: standard, performance, and the rocket version with ten thrusters
- Ground-effect suction system and how it affects cornering loads
- How the original Roadster led to later Tesla models

■ Cold-Gas Thruster Technology
- Compressed gas stored at high pressure, released through fast-acting valves and a converging-diverging nozzle
- Estimated thrust per thruster, vehicle weight, and acceleration figures
- Why cold gas is used, and the electricity needed to compress and store it
- Burn duration, thrust decay as the tank empties, and hover time limits

■ Flight Capability and Practicality
- Thruster placement for lift, pitch, roll, and yaw control
- Whether the demonstrated jump qualifies as flight
- Intended use cases, and how a purpose-built aircraft compares

Viewers interested in aerospace engineering, propulsion, or electric vehicles can follow the reasoning behind each claim and see how the presenter's own estimates are derived. The numbers presented are the presenter's calculations rather than verified figures, so they work as a reference point for further checking.