# Thrusters

Cold-gas nitrogen nozzles, tank sizes, and the Rocket layout that is not road-approved.

## What it is

The gas is described as nitrogen, and it was called air on stage. Thrust is described as four rear nozzles and a tank of about 200 litres in the trunk. Rocket adds six thrusters — one behind each wheel, pointing down, and two at the nose — plus a tank of about 400 litres in place of the passenger seat. The total quoted is about 600 litres.

Thrust is described as about five seconds per fill. Refill times conflict: 6–7 hours for all 600 litres, 2–6 hours, and a 30-minute target. COPVs are described up to 10,000 psi, while a screen reading of 5,500 psi is also reported. A single valve on an Optimus actuator is described, with a thrust claim over 80 kN. Tesla has said every usable void is packed with COPVs. The Rocket trim is not approved for public roads.

Figures below come from Tesla posts or from engineers speaking to outlets. Where sources disagree, the spec sheet says so.

Cold-gas layout. A simple diagram of a tank, a valve, and nozzles at the rear. The Rocket layout adds nozzles by the wheels and at the nose.

Canonical: https://roadster.news/technology/thrusters/
Sources: https://roadster.news/sources/