Radical raises $4.5M seed round
Radical raised a $4.5 million seed round to develop solar-powered high-altitude autonomous aircraft.

Evidence notes
- Scout Ventures led the round.
- Radical is building autonomous aircraft intended for long-duration high-altitude operation.
- The seed round added private financing for Radical's high-altitude autonomous aircraft work.
Company context
Radical builds persistent high-altitude aircraft infrastructure. The Seattle company is a Y Combinator W23 startup developing solar-powered aerial systems for long-duration operations in the sky.