iGRVT orbital transfer vehicles
InterGravity's two tugs: the iGRVT-50 carries up to 20 kg in low Earth orbit, and the larger iGRVT-500 is designed to carry up to 300 kg to orbits from LEO out to GEO and beyond.
Why it matters
Tugs like these carry a satellite from where its rocket drops it to its final orbit, or host instruments and experiments in space. InterGravity's first flight is meant to be both a demonstration and a paying commercial mission.
How the technology works
Both vehicles burn nitrous oxide and ethane, a storable non-toxic propellant pair, in InterGravity's own thrusters (20 N on iGRVT-50, 160 N on iGRVT-500), giving up to about 400 to 500 m/s of delta-v. The first iGRVT-50 mission, CART-1, is listed for February 2027 and fully booked.
Sources
Updated Oct 22, 2026 · How we source facts · Suggest a correction