Captive trials commenced in August 1941 and revealed severe problems with engine vibration and overheating.

Free-flight trials confirmed the design as basically sound, so although the engine difficulties were never fully resolved, Bratukhin was convinced that further development along the same general lines would prove fruitful.

Development of the Omega helicopter was incremental with progressively more powerful engines, stronger structure and more reliable dynamic components, such as gearboxes and transmission shafts.

[1] The ultimate iteration of the Omega was the Bratukhin B-11 which was used to compare characteristics of the products of the three competing helicopter designers.

Completed in 1948 this was probably the most successful of the breed up to that time but still exhibited some of the short-comings of the configuration; mismatch between fixed wing and rotor and reliability of the complex dynamic components.