Rocket Lab's Gauss Thruster
- Rocket Lab unveiled a new electric propulsion thruster called Gauss in a recent industry roundup. - The announcement positions Gauss as Rocket Lab's move into higher‑efficiency electric propulsion for small satellites. - Electric thruster advances like Gauss matter for defence small‑sat constellations that need longer on‑orbit life and precise manoeuvring (x.com).
Satellites use electric thrusters the way a sailboat uses a steady breeze: low force for a long time instead of one hard shove. Rocket Lab said on April 14 it is now selling that kind of propulsion under a new system called Gauss. (rocketlabcorp.com) Rocket Lab said Gauss is an in-house system built around a Hall-effect thruster, plus a power processing unit and a propellant management assembly. The company said it has already set up a production line sized for more than 200 thrusters a year. (markets.businessinsider.com) A Hall-effect thruster works by turning gas into charged particles and pushing them with electric and magnetic fields. That produces much less thrust than a chemical engine, but it uses propellant far more sparingly for orbit-raising, station-keeping and end-of-life disposal. (aviationweek.com) Rocket Lab is aiming Gauss at constellation operators that need hundreds of satellites to hold position, dodge debris and stay useful longer in low Earth orbit. The company put the product into its Space Systems catalog alongside spacecraft, radios, star trackers and other satellite hardware it already sells. (rocketlabcorp.com, rocketlabcorp.com) That fits Rocket Lab’s push beyond launches and into satellite manufacturing at scale. In February 2025, it introduced Flatellite, a stackable spacecraft for high-volume constellations, and said the design targets national security as well as commercial missions. (rocketlabcorp.com) Rocket Lab has also been building deeper ties to U.S. defense space programs. In January 2025, its national security unit said it had passed preliminary design review on 18 satellites for the Space Development Agency’s Tranche 2 Transport Layer-Beta contract, a $515 million award announced earlier in 2024. (rocketlabcorp.com) The sales pitch for Gauss is not just efficiency; it is supply. Aviation Week reported Rocket Lab disclosed the thruster at the Space Symposium in Colorado Springs and said the line can produce up to 200 units annually, a number aimed at customers that buy propulsion by the batch, not one spacecraft at a time. (aviationweek.com) Rocket Lab’s website now lists “Gauss Propulsion” as a standalone product category, a sign the company wants propulsion to sit beside launch and spacecraft buses as a regular line of business. The closer Rocket Lab gets to supplying the satellite, the components and the ride to orbit, the less of its business depends on launch alone. (rocketlabcorp.com, rocketlabcorp.com)
