Nebesa Aerospace

History

The NEBESA unmanned suborbital spaceplane is the first development by Czech company Nebesa Aerospace. It was presented at the Future Forces Forum in Prague in October 2026, with company representative Vojtěch Kubuš describing the platform. NEBESA is intended for testing, research, and defensive tasks. At the time of its public presentation, Nebesa Aerospace was seeking international partners and first customers to launch serial production and flight testing. In parallel, the company is developing a separate jet-powered unmanned aerial vehicle with a range of up to 1,000 km, a speed of 800 km/h, and a payload capacity of up to 80 kg.

Design

NEBESA uses a tailless aerodynamic configuration with an elongated delta wing. Two vertical fins are mounted on the wing panels, and a rocket engine exhaust nozzle is located at the rear. The modular payload bay allows rapid swapping of equipment, including various sensors, onboard antennas, communication systems, and flight control systems. The platform can take off and land at conventional airfields or on sections of road, so it does not require dedicated spaceport infrastructure. In the military domain, the platform can be employed for air reconnaissance, surveillance, as an air target for air defense system testing, and for testing detection and tracking systems.

Specifications

The platform is designed to reach an altitude of up to 110 km and a speed of up to Mach 3.5 (3,700–4,300 km/h). Maximum modular payload is 25 kg. Propulsion is provided by a liquid-propellant rocket engine with a maximum thrust of 9 kN, developed using metal 3D printing, computer modeling, and AI algorithms. The suborbital platform is optimized for microgravity research, materials testing, aerodynamics verification at supersonic speeds, and avionics testing.