Ka-40 is reported to be the designation of a new anti-submarine helicopter under development since 1990 to replace - and loosely based on - the smaller Ka-27. Similar in configuration, it features a coaxial main rotors and twin endplate tailfins, though with a more pointed streamlined nose and full-length panniers along cabin sides. No details have been released officially; even thedesignation itself remained unconfirmed by Kamov bureau officials [the Ka-40 designation had also been applied to the Ka-50 export variant]. It is said to be powered by two Klimov TVA-3000 turboshafts (each 1,838 kW; 2,465 shp), driving coaxial contrarotating rotors. These engines have a 30 second OEI rating of 2,800 kW (3,755 shp) and permit a normal T-O weight of 12,500 kg (27,557 lb) and a maximum of 14,500 kg (31,967 lb). Armament was expected to include the APR-3 water-jet-propelled torpedo capable of attacking submarines at a submerged depth of 500 m (1,640 ft) and KAB-250PL guided depth charges. A civil variant would carry a 7,000 kg (15,432 lb) underslung load.
The navy was believed to have commissioned the helicopter to compensate for the cancellation ofseveral aircraft carriers and the decommissioning of most helicopter carriers. Despite a shortage of funds in Russia, it had been under development since 1990, and remained an active program in the mid-1990s. The Ka-40 looked set to rival the new Mil Mi-38 medium helicopter inthe maritime role. Although the Ka-40 was proposed for several civil and military roles, development was suspended in 1998. Intended to form basis of `family' to fulfil wide variety of roles, but work is believed to remain suspended.
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