China’s CAS Space Completes Propulsion Tests for Kinastra-1 Upper Stage

Designed to function as a space bus, the vehicle handles orbital transfer trajectories after initial rocket launch deployment, conserving satellite fuel and enabling multi-satellite deployment into distinct orbits during a single mission.

Engineering the Kinastra-1 Propulsion Architecture

The recent test campaign evaluated critical subsystems to verify hardware reliability under harsh operating conditions. According to reporting from the Science and Technology Daily, the test series verified the engine pressurization system, propellant feed mechanisms, propellant management systems, and the servo control network. These evaluations targeted three core engineering pillars of the vehicle: high power performance with multi-restart capabilities, parallel and balanced propellant feed architectures across multiple tanks, and an integrated electrical design.

The upper stage integrates an engine that has already accumulated over 5,000 seconds of cumulative ignition time. This hardware longevity supports more than 20 individual ignitions. Furthermore, the onboard flight computer can autonomously plan orbital transfer trajectories while withstanding extreme space environments, including hard vacuum and severe thermal fluctuations.

Modular Design for Deep Space and Constellation Missions

CAS Space engineered the Kinastra-1 with a universal modular framework capable of adapting to multiple launch vehicle classes. This flexibility allows the upper stage to tackle complex mission profiles that go beyond standard low-Earth orbit deliveries.

By shifting orbital transfer duties away from the primary payload and onto the upper stage, commercial satellite operators can maximize their spacecraft’s operational lifespan. The Kinastra-1 mitigates this constraint through its multi-restart architecture.

Commercial Launch Timeline and Market Impact

With component testing concluded this month, the engineering teams are shifting focus toward final vehicle integration and flight-readiness reviews ahead of the Q1 launch window.