Solstorm

Solstorm Technology

Solstorm develops satellite disposal systems that use atmospheric drag to accelerate the removal of spacecraft from low Earth orbit. Its technology is based on increasing a satellite’s exposed surface area so that the small amount of atmospheric gas present at orbital altitudes produces greater resistance to its motion.

The company’s principal approach uses a deployable drag sail. Once activated, the device expands beyond the satellite’s original dimensions, increasing the area exposed to the surrounding atmosphere. This additional drag gradually reduces the spacecraft’s orbital energy, lowering its altitude over time.

As the spacecraft descends into denser atmospheric regions, aerodynamic resistance increases. The process continues until the satellite reenters Earth’s atmosphere, where the spacecraft and its attached disposal equipment are expected to largely burn up. The exact descent time depends on orbital altitude, spacecraft mass, sail area, atmospheric density, and solar activity.

Solstorm’s Nimbus demonstration concept uses deployable structural booms to extend a lightweight sail. Publicly reported plans described six aluminum booms supporting a drag surface approximately 1.5 meters in diameter. The deployed structure was designed to increase the satellite’s effective drag area substantially compared with its compact configuration.

The company’s technology is intended to operate without consuming onboard propulsion fuel during the deorbiting phase. This approach can be useful for small spacecraft that have limited space and mass available for propulsion equipment.

Solstorm also works on orbital decay and disposal mission analysis. These calculations evaluate how drag devices affect spacecraft trajectories and estimate the time required to reach atmospheric reentry under different orbital conditions.

The effectiveness of drag-based disposal is greatest in orbital regions where enough residual atmosphere remains to influence spacecraft motion. The technology is not a direct substitute for propulsion-based disposal systems at higher altitudes, where atmospheric drag becomes extremely weak.

Why Solstorm Matters

Inactive satellites can remain in orbit long after their missions end, creating additional objects that other spacecraft must monitor and avoid. Reducing the time these satellites spend in orbit can help limit the accumulation of future space debris.

Solstorm’s propellantless deorbiting technology offers a potential disposal method for spacecraft that cannot dedicate significant fuel reserves to end-of-life maneuvers. A deployable drag device can increase orbital decay without requiring a conventional propulsion burn.

The approach is particularly relevant to small satellites operating in low Earth orbit, where spacecraft mass, volume, and available power are often constrained.

By focusing on disposal planning before launch, Solstorm contributes to efforts to prevent operational satellites from becoming long-lived debris. The technology’s commercial significance will depend on reliable deployment, demonstrated orbital performance, and integration with customer spacecraft.