Velontra announces selection for Y Combinator
Velontra announced its selection for Y Combinator while developing a runway-launched hypersonic spaceplane and air-breathing propulsion system.

Evidence notes
- Velontra announced that it had joined Y Combinator's accelerator programme.
- The company described a horizontal-takeoff spaceplane architecture using air-breathing propulsion before releasing a second-stage rocket into low Earth orbit.
- Velontra said the aircraft was designed to climb above 100,000 feet and reach Mach 5 before the orbital-stage release.
Company context
Velontra builds a hypersonic space plane concept. The Cincinnati company is a Y Combinator startup working on aerospace hardware with drone and high-speed aircraft relevance.