The Soviet naval helicopter that mastered the art of hovering without a tail rotor

Countries & Cities · Published 12 October 2026 Swipe more like this →

In short: Engineered to replace the decade-old Ka-25, the Kamov Ka-27 utilizes a unique coaxial rotor design. By eliminating the tail rotor, this robust machine gained exceptional maneuverability near obstacles, making it a formidable tool for anti-submarine warfare and specialized heavy lifting in the world's most demanding environments.

Development of the Ka-27, known by the NATO reporting name 'Helix', began in 1969. The first prototype took flight in 1973, designed specifically to match or even reduce the external dimensions of its predecessor, the Ka-25. A defining mechanical feature of the Ka-27 and its descendants, such as the Ka-32, is the coaxial rotor system. This configuration removes the need for a tail rotor and associated tail boom, which significantly enhances the aircraft's ability to maneuver precisely near obstacles and maintain stability when hovering in heavy dust or smoke.

The aircraft family serves diverse roles, from the Ka-27PL anti-submarine version—which can deploy torpedoes, depth charges, or up to 36 sonobuoys—to the Ka-32 civilian variant. The Ka-32 is utilized globally for heavy-duty tasks, including constructing transmission towers for power lines and selective logging in Canada. Some versions are even equipped with the Bambi Bucket system, capable of carrying up to five tons for firefighting.

However, the complexity of these machines brings significant technical challenges. In August 2013, a Ka-32 operating in British Columbia, Canada, suffered an engine failure due to poor quality control in the assembly of a compressor turbine. Despite such risks, the service life of these helicopters has been extended to reach up to 32,000 flight hours.

Modernization efforts continue to evolve the platform. The Ka-27M variant features an active electronically scanned array radar (FH-A) that integrates acoustic, magnetometric, and signals intelligence into a single tactical system. While the Ka-27 family has seen widespread export to nations like China, South Korea, and India, it remains a central component of various naval fleets, including the Russian Navy.

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