The Kamov Ka-29 was and still is a Soviet-made multipurpose all-metal naval helicopter with a fixed undercarriage and a rare coaxial twin rotor design. The drive is provided by two Izotow TV-3-117W turbine engines with a power of 2225 KM each. The flight of the first prototype took place in 1976, and serial production was carried out in 1984-1991 at Kumiertauskie Zak³ady Lotnicze.
The Kamow Ka-29 was created as a far-reaching development of the Ka-27 helicopter. First of all, the Ka-29 was intended to support landings and assaults of the Soviet marines. Therefore, the shape of the hull was changed and redesigned, with particular emphasis on its front part. As a result, the new machine could take up to 15 landing troops. Side beams have also been added for overhead weapons (e.g. 7.62mm machine guns, 82mm unguided missile launchers or 23mm cannons). The Ka-29 helicopter was also equipped with light armor (unlike the Ka-27). The Ka-29 helicopter was only exported to Vietnam.
The Kamov Ka-31 (in NATO code: Helix) was and still is an on-board Soviet / Russian early warning helicopter of all metal construction, with a retractable landing gear, in a rare coaxial twin rotor configuration. The drive is provided by two Izotow TV-3-117WMAR turbine engines with a nominal power of 1900 KM each. The flight of the first prototype took place in 1986, and serial production started in 2001 and is still in progress at Kumiertauskie Zak³ady Lotnicze. The Kamow Ka-31 was created as a very far-reaching development of the Ka-27 helicopter. First of all, the Ka-31 was to detect and locate enemy surface ships, which required the installation of a powerful E801M sea and air surveillance radar. This entailed numerous design changes. First of all, the machine's hull was changed and significantly redesigned. New engines and a retractable undercarriage were also used. At the moment (2017), the main user of this helicopter is the Indian Navy and China, while in the Russian fleet, the machine is intensively tested. It is estimated that the unit cost of the Ka-31 is approximately 23 million. dollars by 1999 prices.