The first free-flight stall test of the ARJ21 new regional jet aircraft was successfully completed. Following this, the model also performed multiple landings, marking a significant step forward in the development process. The primary goal of the model's free-flight stall test is to study the aircraft's stall characteristics and recovery procedures. During the test, the model was carried by a carrier to an altitude of 1,200 meters. Once released, it used its own weight to descend and accelerate to the desired speed before leveling off. The entire flight was remotely controlled from a ground monitoring station, allowing operators to execute a series of pre-programmed maneuvers. Meanwhile, both ground telemetry systems and onboard testing equipment collected detailed data throughout the flight, providing crucial information for further analysis and research. As the model descended to a certain altitude, a parachute automatically deployed, ensuring a safe landing. This test not only validated the reliability of key systems such as remote control, telemetry, and on-board instrumentation, but also laid a strong foundation for future free-flight tests. Additionally, it provided important safety assurances for the ARJ21’s first official flight, which is expected to take place early next year. The success of this test is a major milestone in the aircraft's development and highlights the progress being made toward its full operational readiness.

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