Bifröst - high-Performance Cryogenic Orbit Transfer Stage (OTS)
Bifröst is an orbital transfer spacecraft powered by NFA’s 3D printed, full-flow staged combustion, LOX/LNG Mjölnir engine - and optimized for small satellites and NASA “Venture Class” launch vehicles.
From low Earth orbit, a 3,000 lb. gross weight Bifröst enables rapid Hohmann transfers of:
400 lb. payloads to geostationary orbit;
200 lbs. to any location in cislunar space; or
110 lbs. to Venus transfer, Mars transfer or Earth escape velocity.
The high-performance engine enables the design of a small and lightweight OTS due to its performance and the high bulk density of LOX/LNG fuel, which is over twice that of LOX/LH2 fuels. This level of performance and dense propellants allow for the delivery of a reliable, long-life, light-weight, and low-cost OTS with key performance parameters:
Powered by a high performance full-flow staged combustion engine
Higher thrust and Delta v than the competition
Throttleable thrust from 30% to 100%
Autogenous pressurization with unlimited zero-g restarts
Access to all Earth, Lunar and cislunar orbits
Faster transfers to the libration points
Proprietary zero-boiloff technology
Bifröst has the potential to evolve from a transfer stage into a lunar lander - and ultimately a refuelable and fully re-usable OTS. From LEO a 3,000 lb gross OTS can deploy a 400 lb payload to GEO and over 200 lbs to any location in cislunar space, including Earth escape velocity.
For more information go to the NASA Tech Portal.
A 3,000 lb OTS enables responsive military access throughout cislunar space for space domain awareness and other missions.
Bifröst has a small form factor optimized for launch inside the fairing of venture class vehicles.
The Mjölnir engine will be available for Bifröst, lunar lander, or related capabilities in 2024.
Download the factsheet.