Pulsar Fusion is a UK-based start-up that has demonstrated two designs of prototype rocket engine.
[2] Pulsar has tested its first Hall effect satellite thruster, achieving an exhaust velocity of 20 km/s.
[3] Pulsar tested its hybrid polyethylene/nitrous oxide launch rocket engines in November 2021.
[3] On its website, as of late-2022, the company says it is developing a Direct Fusion Drive.
As of January 2024, Pulsar is working on building a nuclear fusion powered rocket that would be capable of going 500,000 mph, and could reach Mars in half the time.