Innospace to Launch Upgraded Sebit Rocket Nov. 29
The South Korean startup plans to test its improved suborbital rocket at Brazil's Alcantara Launch Center after an unsuccessful August maiden flight.
Updated on Nov. 9, 2026 in Space
South Korean space startup Innospace plans to launch an upgraded Sebit suborbital rocket from the Alcantara Launch Center in Brazil on Nov. 29. The company's August maiden test flight deviated from its planned trajectory and was terminated.
Why it matters
The upcoming flight will be Sebit's second test launch and serves as a validation of the design changes made after the first attempt. Commercial testing and validation services depend on demonstrating reliable propulsion and flight control.
The company has secured a 26-day launch window, and the hybrid engine has been raised from the 3-ton to the 4-ton thrust class. The final launch date and time remain undetermined pending weather and operational readiness.
The players
Innospace
Innospace is a South Korean space startup developing commercial suborbital launch vehicles.
ALADA
ALADA is Brazil's state-owned aerospace company that coordinated the launch window with the company.
The details
Innospace has made two main changes to the Sebit rocket: increasing engine thrust and redesigning the flight control algorithm. The launch window was coordinated with Brazil's state-owned aerospace company ALADA, the Brazilian Air Force, and the Brazilian Space Agency.
Timeline
August: Sebit's maiden test flight deviated from its planned trajectory and was terminated.
Nov. 16 to Dec. 11: Launch window at the Alcantara Launch Center.
Nov. 29: Planned launch date for the upgraded Sebit rocket.
Roadmap
The upcoming Sebit launch follows the vehicle's first attempt in August and tests a redesigned version with a larger engine and new flight control software. It positions Innospace to demonstrate the commercial testing and validation services its suborbital rocket is designed to offer.
The launch outcome will show whether the redesigned engine and flight control changes resolve the issues from the August flight. A successful test would move the Sebit program closer to offering commercial validation services.
The takeaway
Upgrades following a failed test flight are a common path in early rocket development, and the Nov. 29 launch will show whether the changes to thrust and flight control hold up. Readers following commercial space testing can watch this flight as an early indicator of the Sebit program's progress.
What happens next
The Sebit launch is scheduled for Nov. 29 at the Alcantara Launch Center, with the final date subject to weather and readiness checks.
Further reading
Explore more on the Space beat for context on suborbital launch programs.
