Accion Systems
Satellite propulsion
An affiliate of Tracker Capital Management took a majority stake in July 2021, alongside a $42M Series C. Accion Systems operated in the propulsion sector of the space industry, was headquartered in United States, was founded in 2014, reached Series C+ stage.
Accion Systems at a glance
| Status | Acquiredchecked August 2026An affiliate of Tracker Capital Management took a majority stake in July 2021, alongside a $42M Series C. |
|---|---|
| Now operating as | Revolution Space |
| Sector | Propulsion |
| Headquarters | United States |
| Founded | 2014 |
| Stage | Series C+ |
| Team size | 11-50 |
| Website | accion-systems.com |
Record last updated August 2026 · how we verify · spotted something outdated? Tell us.
We interviewed Natalya Bailey
How I Went From Doing Research At MIT To Building A Successful Satellite Company
Read the interviewTimeline & funding
- July 2021FundingSeries C: $42M, with Tracker Capital taking a majority stake↗Led by an affiliate of Tracker Capital Management
- July 2021Company
Mission
Small ion engines for in-space propulsion, designed for the smallsat market.
Accion Systems came out of MIT in 2014, founded by Natalya Bailey and Louis Perna to commercialize the electrospray thruster from Bailey's doctoral work. TILE was the product: a flat, postage-stamp-sized ion thruster fed by a non-toxic ionic liquid, with no pressurized tank and no plumbing, scaled by adding more tiles rather than by building a bigger engine.
The hardware flew. TILE units went up on student cubesats in 2018, and in 2021 a TILE system on a NanoAvionics satellite raised its orbit, the change confirmed by GPS, under a NASA partnership. The same year the investment firm Tracker Capital took a majority stake, with plans to scale the technology to larger satellites.
That version of the company stalled. By 2023 it had gone quiet, and the same legal entity was later relaunched under new management as Revolution Space, led by Darren Garber with former NASA administrator Dan Goldin chairing the board, selling TILE-derived propulsion with a defense focus. In 2025 it won a US Air Force contract for an in-space propulsive adaptor. Flight results published under the new name are thin, and no press ever documented what happened in between; the clearest public trace of the wind-down is a LinkedIn thread asking where the company went.
Team
- Natalya Bailey · Co-founder
- Louis Perna · Co-founder
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